How to Open Any File Extension
Stuck with an unrecognized or unreadable file? Find verified step-by-step instructions for Windows 11/10, macOS, Linux, iPhone, and Android, backed by real software compatibility data and free in-browser tools.
High-Search Priority Opening Guides
The most commonly encountered difficult file types across modern operating systems.
Not Sure Why Your File Won't Open?
Use the AnyFileX Magic Byte Detector to verify if a file has been misnamed or corrupted, or run it through the File Forensics Inspector to check cryptographic hashes and embedded streams.
Browse Guides by Category
Showing 290 format guidesHigh Efficiency Image Container
Apple iOS default high-efficiency camera image format using HEVC compression.
Adobe Photoshop Document
Layered raster graphics project file created in Adobe Photoshop with smart objects and masks.
Google WebP Image Format
Modern web image format developed by Google offering superior lossy and lossless compression.
Scalable Vector Graphics
XML-based vector image format supporting infinite scalability without resolution loss.
Tagged Image File Format
High quality raster graphics format widely used in professional printing and photography.
Canon RAW Version 3 Image
Raw unprocessed camera sensor data format created by Canon EOS digital cameras.
AutoCAD Drawing Database
Industry standard binary CAD file format storing 2D and 3D architectural and engineering designs.
ISO 10303 STEP CAD Model
Universal 3D CAD exchange format for solid model geometry and assembly structure.
Stereolithography 3D Mesh
Raw 3D surface mesh format composed of triangular facets used universally in 3D printing.
Blender 3D Scene File
Complete 3D animation scene file containing meshes, rigs, shaders, and keyframes from Blender.
Portable Document Format
Universal document exchange format preserving fonts, formatting, and vector layouts.
Microsoft Word Open XML Document
Zip-compressed XML document format created by Microsoft Word.
Microsoft Excel Open XML Spreadsheet
Zip-compressed XML spreadsheet format created by Microsoft Excel.
Electronic Publication E-Book
Standard open e-book format with reflowable typography and XHTML layout structure.
ZIP Compressed Archive
Universal lossless data compression and file container archive format.
Roshal Archive Compressed File
Proprietary compressed archive format created by Eugene Roshal with recovery records.
7-Zip Compressed Archive
Open-source compressed archive format with ultra-high LZMA/LZMA2 compression ratio.
Automated Weight and Balance System Data File
AWBS is a specialized data-storage extension associated with Lockheed Martin’s Automated Weight and Balance System, used to maintain aircraft weight, balance, loading, and related aviation records.
Camtasia Studio Screen Recording
CAMREC is a legacy TechSmith Camtasia screen-recording container used by older Windows releases. It can hold captured screen video, microphone or system audio, cursor assets, keyboard and event data, and recording metadata.
Apple QuickTime Movie
Apple QuickTime digital video container storing video, audio, text, and metadata streams.
MPEG-4 Part 14 Video File
Universal digital video container standard for streaming, broadcasting, and web playback.
Free Lossless Audio Codec
Open-source audio format providing bit-for-bit lossless audio compression.
JavaScript Object Notation
Lightweight text-based data interchange format based on key-value data structures.
Comma-Separated Values
Plain text file format organizing structured data into rows and comma-delimited columns.
RFC 822 Email Message Archive
Standard RFC 822 email file format containing email headers, text body, and file attachments.
ELG Event and Diagnostic Log File
ELG is a shared file extension used for event, diagnostic, telemetry, and data-logger files. IBM Integrated Management Module (IMM) logs are a common association, but the actual structure depends on the application that created the file.
Generic Data File
Generic data file container holding raw text, binary configuration data, or Winmail attachments.
JPG File Format
Complete reference for .JPG (JPEG) image files. Discover how to open JPGs on Windows, macOS, Android, and iOS, convert JPG to PDF/PNG/WEBP, and repair corrupted headers.
PNG File Format
Learn about .PNG image files featuring alpha transparency. Discover compatible PNG viewers, online PNG to JPG/WEBP converters, and file header validation.
JPEG File Format
Full reference guide for .JPEG files. Learn about DCT compression, EXIF metadata tags, browser compatibility, and online converters.
GIF File Format
Guide to .GIF files. Learn about LZW indexed color palettes, animated GIF sequences, loop settings, and converting GIF to MP4 video.
APNG File Format
Guide to .APNG files. Learn how Animated PNG delivers 24-bit color and 8-bit alpha channel transparency superior to traditional 8-bit GIFs.
AVIF File Format
Deep dive into .AVIF, the ultra-compressed image standard based on AV1 video codec. Learn how AVIF outperforms JPEG and WEBP in HDR photo quality.
HEIF File Format
Guide to .HEIF containers storing individual images or image sequences. Learn how HEIF uses HEVC compression for high dynamic range digital photos.
JXL File Format
Explore JPEG XL (.JXL), the next-generation royalty-free image codec designed for lossless JPEG transcoding and wide color gamut photography.
BMP File Format
Complete guide to uncompressed .BMP device-independent bitmaps. Learn how BMP stores raw pixel grids, bitmap headers, and color tables.
ICO File Format
Learn how .ICO files store multiple icon resolutions and color depths for desktop shortcuts and web browser favicons.
CUR File Format
Guide to .CUR files used for static Windows mouse cursors, hotspot coordinates, and pixel transparency masks.
WBMP File Format
Reference for 1-bit monochrome .WBMP graphics created for early mobile phones and WAP wireless protocols.
RAW File Format
Universal reference for .RAW digital camera files. Learn how camera sensors record uncompressed sensor data, dynamic range, and raw photo development.
CR2 File Format
Complete guide to Canon's .CR2 raw photographic format. Discover how to open CR2 photos on PC/Mac, develop RAW images in Lightroom, and convert CR2 to JPG.
CRW File Format
Legacy Canon Camera Image File Format (.CRW) reference for classic EOS digital SLR cameras.
NEF File Format
Complete reference for Nikon .NEF camera raw files. Learn how Nikon DSLR and Z-series mirrorless cameras store 12-bit and 14-bit uncompressed sensor data.
NRW File Format
Guide to Nikon Coolpix compact camera .NRW raw photo files and WIC codec integration.
ARW File Format
Guide to Sony .ARW uncompressed and compressed RAW photos. Learn how Sony Alpha mirrorless cameras store sensor data and develop photos in Lightroom.
SR2 File Format
Legacy Sony .SR2 raw photo format used in Cyber-shot and early Alpha digital cameras.
SRF File Format
Early Sony digital camera raw photo format specification.
DNG File Format
Complete specification for Adobe's open .DNG raw standard. Learn how DNG preserves camera raw metadata across future photo editing software generations.
ORF File Format
Reference for Olympus and OM System .ORF raw photography files. Learn about Micro Four Thirds raw image processing and software support.
RW2 File Format
Complete guide to Panasonic LUMIX .RW2 camera raw photos. Learn how to open and develop LUMIX raw files.
PEF File Format
Reference for Pentax DSLR .PEF raw photo files and DNG in-camera conversion.
PTX File Format
Pentax .PTX raw image format documentation and editor compatibility.
RAF File Format
Guide to Fujifilm .RAF raw files capturing X-Trans and Bayer sensor color science. Discover film simulation profiles in Lightroom and Capture One.
KDC File Format
Kodak .KDC photo file specification for Easyshare digital cameras.
DCR File Format
Kodak Professional SLR camera raw file format (.DCR).
MOS File Format
Leaf digital camera back raw photo format (.MOS) used in medium format studio photography.
MPO File Format
Guide to .MPO files containing multiple JPEG images captured for stereoscopic 3D cameras and Nintendo 3DS.
MRW File Format
Konica Minolta .MRW raw camera photo file format.
ERF File Format
Epson R-D1 digital rangefinder camera raw image file (.ERF).
3FR File Format
Hasselblad medium format camera raw photo file format (.3FR).
MEF File Format
Mamiya medium format digital camera back raw photo format (.MEF).
RWL File Format
Leica digital camera .RWL raw photo specification.
IIQ File Format
Phase One medium format back .IIQ raw format storing up to 150-megapixel uncompressed photos.
X3F File Format
Sigma camera .X3F raw format recording full RGB color layers at every pixel location via Foveon sensors.
SVGZ File Format
GZIP-compressed .SVGZ vector graphic specification and web browser rendering.
AI File Format
Master Adobe Illustrator .AI vector graphics. Learn how AI files store resolution-independent vector paths, layers, and PDF compatibility streams.
EPS File Format
Complete guide to .EPS PostScript vector files. Learn how EPS is used in desktop publishing, professional printing presses, and graphic design.
CDR File Format
Reference for CorelDRAW .CDR vector illustration files. Learn how to open CDR drawings without purchasing CorelDRAW.
WMF File Format
Guide to Microsoft .WMF 16-bit vector and raster metafile graphics used in Office clip art.
EMF File Format
32-bit Microsoft .EMF vector graphic specification used for high-resolution printing.
SKETCH File Format
Bohemian Coding Sketch .SKETCH UI/UX design file format details and view options.
FIG File Format
Reference for Figma .FIG cloud export design files and vector graphics.
PSB File Format
Reference for .PSB files supporting Photoshop documents larger than 2GB or 30,000x30,000 pixels.
XCF File Format
Complete guide to GIMP native .XCF layered image project format.
CPT File Format
Corel PHOTO-PAINT native bitmap graphic document format (.CPT).
PDN File Format
Paint.NET .PDN native image project file format storing compressed layers.
KRA File Format
Krita digital painting app .KRA project document file format.
CLIP File Format
CELSYS Clip Studio Paint .CLIP manga and illustration project format.
SAI File Format
SYSTEMAX Paint Tool SAI digital illustration document format.
PSP File Format
Jasc / Corel PaintShop Pro .PSP / .PSPIMAGE graphic document.
TIF File Format
Alternate 3-letter extension for .TIFF graphics. Learn how TIF files store uncompressed raster scans and multi-page document archives.
TGA File Format
Guide to Truevision .TGA graphics widely used in 3D video game texture pipelines and animation compositing.
EXR File Format
Industrial Light & Magic .EXR open high dynamic range format supporting 16-bit and 32-bit floating point color channels in VFX.
HDR File Format
Radiance .HDR format storing floating point luminance values for 3D environment lighting maps.
DDS File Format
Microsoft .DDS surface file format storing DXT1/DXT5 block compressed GPU textures for Real-Time 3D engines.
VTF File Format
Valve Source Engine .VTF texture file specification for Counter-Strike, Half-Life 2, and Portal.
SGI File Format
Silicon Graphics workstations native .SGI / .RGB raster graphic format.
PBM File Format
Netpbm .PBM 1-bit monochrome image format specification.
PGM File Format
Netpbm .PGM grayscale raster image format specification.
PPM File Format
Netpbm .PPM 24-bit RGB color graphic format specification.
PNM File Format
Netpbm .PNM umbrella format for PBM, PGM, and PPM raster images.
PAM File Format
Netpbm .PAM 2D raster image format supporting arbitrary channels and alpha transparency.
XBM File Format
X Window System .XBM monochrome graphic format formatted as plain C source code arrays.
XPM File Format
X Window System .XPM color raster graphic formatted as C array string constants.
DCM File Format
Complete guide to .DCM (DICOM) medical imaging files used in CT scans, MRI, ultrasound, and X-rays. Learn how to view DICOM files safely with HIPAA compliance.
DICOM File Format
Full name extension for .DCM DICOM medical scan archives.
FIT File Format
Guide to .FIT Flexible Image Transport System astronomical observation data and Garmin GPS activity logs.
FITS File Format
NASA astronomical camera raw data format storing telescope scientific observations.
GEOTIFF File Format
Geographic .GEOTIFF extension storing spatial reference tags, projection data, and satellite imagery.
PCX File Format
Complete guide to historic .PCX graphics widely used on MS-DOS PC games and ZSoft Paintbrush.
PICT File Format
Classic Apple Macintosh .PICT / .PCT metafile graphic format created for Mac OS 1 through QuickDraw.
IFF File Format
Electronic Arts / Commodore Amiga .IFF ILBM graphic and sound file format specification.
LBM File Format
Deluxe Paint .LBM bitmap image specification created for Commodore Amiga and MS-DOS.
MAC File Format
Original Apple MacPaint .MAC 1-bit monochrome graphic format created by Susan Kare and Bill Atkinson.
DOC File Format
DOC is the binary document file format used by Microsoft Word 97 to 2003. It contains styled text, tables, embedded graphics, and legacy macro scripts.
DOCM File Format
DOCM is an XML-based Microsoft Word document containing embedded Visual Basic for Applications (VBA) macro automation scripts.
DOT File Format
DOT is a legacy template document format created by Microsoft Word to store pre-formatted page layouts, styles, and boilerplate text for creating new documents.
DOTX File Format
DOTX is the modern OpenXML template format used by Microsoft Word 2007+ for distributing standardized document structures without macros.
DOTM File Format
DOTM is a Microsoft Word OpenXML template containing customizable macros and toolbars used to instantiate new macro-enabled Word documents.
ODT File Format
ODT is an open-standard XML word processing document format defined by OASIS and used natively by LibreOffice, OpenOffice, and AbiWord.
OTT File Format
OTT is an OpenDocument template file used by LibreOffice and OpenOffice to generate pre-styled ODT word processing files.
RTF File Format
RTF is a cross-platform formatted text format created by Microsoft in 1987 to facilitate inter-application document exchange across Mac and Windows.
TXT File Format
TXT is a plain text file format containing raw unformatted characters encoded in UTF-8, ASCII, or Unicode without styling or embedded media.
WPS File Format
WPS is a legacy document format created by Microsoft Works suite before being replaced by Microsoft Word.
WPD File Format
WPD is a feature-rich word processing document format used by Corel WordPerfect, popular in legal and government sector documentation.
PAGES File Format
PAGES is the word processing document format created by Apple Pages, containing formatted text, page layouts, vectors, and media elements.
PAGES-TEF File Format
PAGES-TEF (Target Executable File) is a compressed single-file variation of Apple Pages documents optimized for network transfers.
XLS File Format
XLS is the legacy binary spreadsheet file format created by Microsoft Excel 97 to 2003, holding cell grids, formulas, charts, and macros.
XLSM File Format
XLSM is an XML-based Microsoft Excel workbook that includes Visual Basic for Applications (VBA) code and macro procedures.
XLSB File Format
XLSB is a binary compressed XML workbook format in Microsoft Excel, optimized for ultra-fast loading of massive multi-million row datasets.
XLT File Format
XLT is a legacy template document created by Microsoft Excel 97-2003 for generating pre-built spreadsheet layouts.
XLTX File Format
XLTX is an XML template file created by Microsoft Excel 2007+ for distributing reusable, macro-free financial and data entry forms.
ODS File Format
ODS is the open-standard XML spreadsheet file format defined by OASIS and utilized by LibreOffice Calc, OpenOffice, and Google Sheets.
TSV File Format
TSV is a plain text data file that organizes records in columns separated by tab characters. Learn how to open a TSV file in Excel, Google Sheets, or a text editor while preserving delimiters and encoding.
NUMBERS File Format
NUMBERS is the spreadsheet document format developed by Apple Inc. as part of the iWork suite, featuring multi-table freeform canvases.
PPT File Format
PPT is the binary presentation file format created by Microsoft PowerPoint 97 to 2003, storing slides, shapes, text animations, and audio effects.
PPTX File Format
PPTX is the open XML presentation file format introduced in PowerPoint 2007+, housing high-definition slide decks, vector graphics, and embedded media.
PPTM File Format
PPTM is an XML-based PowerPoint presentation containing embedded Visual Basic for Applications (VBA) macro commands and custom slide behaviors.
PPS File Format
PPS is a legacy Microsoft PowerPoint slide show file that launches immediately into full-screen presentation mode when double-clicked.
PPSX File Format
PPSX is a Microsoft PowerPoint OpenXML slide show format designed to immediately launch presentation playback without displaying the editor window.
ODP File Format
ODP is the open-standard XML presentation slide deck file created by OASIS and supported by LibreOffice Impress, OpenOffice, and Google Slides.
KEY File Format
KEY is the presentation slideshow file created by Apple Keynote, featuring cinema-quality transitions, typographic effects, and multi-layered slide objects.
MOBI File Format
MOBI is a digital book format created by Mobipocket and used extensively on Amazon Kindle hardware devices prior to AZW3 adoption.
AZW File Format
AZW is a proprietary electronic book format created by Amazon for Kindle devices, based on Mobipocket with custom DRM encryption wrappers.
AZW3 File Format
AZW3 (KF8) is Amazon's modern Kindle ebook format supporting HTML5 tags, CSS3 layout rules, embedded fonts, and vector graphics.
FB2 File Format
FB2 is an XML-based eBook format originating in Russia, encoding book structure, footnotes, cover art, and inline images in a single file.
DJVU File Format
DJVU is an advanced image compression format specifically developed by AT&T Labs for storing high-resolution scanned books and manuscripts efficiently.
CBR File Format
CBR is a comic book archive containing sequentially named image files (JPEG/PNG) compressed inside a RAR archive wrapper.
CBZ File Format
CBZ is an open comic book format storing sequential comic page scans inside a standard ZIP archive.
PUB File Format
PUB is the desktop publishing file format created by Microsoft Publisher for designing flyers, newsletters, brochures, and print layouts.
INDD File Format
INDD is the professional page layout project format created by Adobe InDesign, housing vector graphics, typography grids, master pages, and links to high-res media.
IDML File Format
IDML is an open XML representation of Adobe InDesign document structures, enabling cross-version project exchange and third-party automated publication generators.
XPS File Format
XPS is a fixed-layout document format developed by Microsoft as an open alternative to Adobe PDF, preserving vector print visual layouts.
OXPS File Format
OXPS is the standardized ECMA-388 version of Microsoft XPS paper specification format used natively by Windows 8 and 10 default print drivers.
XML File Format
XML is a software- and hardware-independent markup language format designed by the W3C to store and transport structured hierarchical data.
MD File Format
MD is a lightweight text markup language format created by John Gruber for formatting readable plain text using simple syntax like asterisks and hash marks.
TEX File Format
TEX is a typesetting language source document created by Donald Knuth, widely used in mathematical, scientific, and academic publishing.
LOG File Format
LOG is a plain text document created automatically by operating systems, servers, and applications to record timestamps, status updates, and diagnostic events.
MSG File Format
MSG is a file format used by Microsoft Outlook and Exchange to store an individual email message, appointment, contact, or task item, including full MAPI headers, body text, and attachments.
AD1 File Format
AD1 is AccessData/Exterro's logical evidence image format, created by FTK Imager to preserve selected files and folders for digital forensics. Learn how to identify, open, and handle AD1 files safely.
TAR File Format
TAR (Tape Archive) is a UNIX standard archive format that consolidates multiple files, file metadata, and directory trees into a single uncompressed stream.
GZ File Format
GZ is a single-file compression format created by Jean-loup Gailly and Mark Adler for the GNU project using the DEFLATE algorithm as a free replacement for compress.
TGZ File Format
TGZ (short for .tar.gz) is a TAR directory archive compressed with GNU Gzip software, serving as the standard Linux software distribution format.
ISO File Format
ISO is an uncompressed sector-by-sector disk image archive of an optical media disc (CD, DVD, or Blu-ray) following the ISO 9660 or UDF filesystem standard.
DMG File Format
DMG is a mountable Apple Disk Image file format used on macOS to package installer applications, software updates, and encrypted volume disk structures.
BZ2 File Format
BZ2 is a data compression format developed by Julian Seward using the Burrows-Wheeler block-sorting algorithm to achieve high compression rates.
XZ File Format
XZ is a single-file compression container using the LZMA2 algorithm, offering high compression efficiency for open source software source tarballs.
CAB File Format
CAB (Cabinet) is an archiving and compression file format developed by Microsoft for packaging system setup files, device drivers, and Windows updates.
WIM File Format
WIM is a file-based disk image format introduced by Microsoft in Windows Vista for deploying operating system installation images.
MP3 File Format
MP3 (MPEG-1 Audio Layer III) is the landmark digital audio coding format designed by Fraunhofer Society, utilizing lossy psychoacoustic compression to reduce audio size by 90%.
WAV File Format
WAV (Waveform Audio) is an uncompressed PCM raw audio file format created by Microsoft and IBM for storing studio-grade audio recordings.
AAC File Format
AAC (Advanced Audio Coding) is a lossy digital audio compression standard designed by Fraunhofer, Dolby, and Sony as the successor to the MP3 format with superior fidelity.
OGG File Format
OGG is a free open-container format created by Xiph.Org Foundation, typically housing lossy Vorbis audio streams used extensively in video game sound engines.
M4A File Format
M4A is an audio-only container format using the MPEG-4 standard, encoded with lossy AAC or Apple Lossless (ALAC) codec.
AIFF File Format
AIFF (Audio Interchange File Format) is an uncompressed PCM audio standard developed by Apple in 1988 for Macintosh computer platforms.
ALAC File Format
ALAC is an open-source audio coding format developed by Apple for bit-for-bit lossless audio compression packaged inside M4A containers.
WMA File Format
WMA is a proprietary audio data format developed by Microsoft as a direct competitor to MP3 and AAC formats for Windows Media Player.
OPUS File Format
OPUS is an ultra-low-latency lossy audio coding format developed by Xiph.Org and Skype for real-time VoIP speech and high-quality music streaming.
MID File Format
MID (MIDI) is a musical sequence instruction file format storing note pitches, velocities, instrument channels, and tempo events without raw digital audio waves.
AVI File Format
AVI (Audio Video Interleave) is a legacy multimedia container format introduced by Microsoft in 1992, synchronously interleaving audio and video streams.
MKV File Format
MKV (Matroska) is a free open-standard multimedia container format capable of holding an unlimited number of video, audio, picture, and subtitle tracks in a single file.
WMV File Format
WMV is a series of video codec formats and container specifications developed by Microsoft for internet streaming and Windows media desktop software.
FLV File Format
FLV (Flash Video) is a container format developed by Macromedia/Adobe to deliver video streams over the web via Adobe Flash Player.
WEBM File Format
WebM is a royalty-free HTML5 video format sponsored by Google, housing VP8/VP9/AV1 video streams and Opus/Vorbis audio for web browser streaming.
MPEG File Format
MPEG (MPG) is an early digital video coding standard established by ISO/IEC, implementing lossy compression for optical video discs (VCD/DVD).
M4V File Format
M4V is an Apple video container file format closely resembling MP4, frequently protected by FairPlay DRM encryption for iTunes Store movies.
3GP File Format
3GP is a simplified MPEG-4 multimedia container format defined by the 3rd Generation Partnership Project for 3G mobile video recording and messaging.
VOB File Format
VOB (Video Object) is the core DVD-Video container format holding multiplexed MPEG-2 video, AC-3 surround sound audio, digital menus, and subtitles.
TS File Format
TS (Transport Stream) is a communications protocol container designed for streaming broadcast television, IPTV, and satellite digital video signals.
DXF File Format
DXF (Drawing Exchange Format) is an open vector data standard created by Autodesk to enable CAD data interoperability between AutoCAD and third-party engineering programs.
STP File Format
STP is the shorthand file extension for ISO 10303 STEP files, preserving high-precision parametric B-Rep solid geometry and assembly hierarchies for 3D engineering.
3MF File Format
3MF (3D Manufacturing Format) is an open XML-based compressed archive standard designed specifically for additive manufacturing, storing complete 3D models with materials, colors, build plate items, and slicer metadata.
DST File Format
DST is an industry-standard commercial embroidery machine file format developed by Tajima, containing stitch coordinates, needle jumps, and color change stop codes for automated embroidery sewing machines.
OBJ File Format
OBJ is an open 3D geometry file format originally developed by Wavefront Technologies, containing 3D mesh vertex coordinates, UV texture maps, normals, and face surfaces.
FBX File Format
FBX (Filmbox) is a 3D asset interchange format owned by Autodesk, storing 3D meshes, skeleton armatures, skeletal animations, cameras, lighting, and materials for video games.
IGES File Format
IGES (Initial Graphics Exchange Specification) is an ANSI neutral exchange standard for sharing wireframe models, freeform NURBS surfaces, and CAD engineering drawings.
IGS File Format
IGS is the three-letter file extension shorthand for IGES, storing vector wireframes and NURBS surface definitions for CAD model exchange.
IFC File Format
IFC (Industry Foundation Classes) is an open neutral ISO 16739 standard specification for Building Information Modeling (BIM) data exchange across architectural software.
DGN File Format
DGN (Design) is the CAD file format used by Bentley Systems MicroStation for infrastructure engineering, highway design, utilities, and plant modeling.
SKP File Format
SKP is the native 3D design file format created by Trimble SketchUp for architectural concept modeling, interior design, and urban planning.
SLDPRT File Format
SLDPRT is the native 3D part design file created by Dassault Systèmes SolidWorks, containing parametric features, sketch dimensions, material physics, and solid bodies.
SLDASM File Format
SLDASM is the 3D assembly file format created by SolidWorks, referencing individual .SLDPRT component files, mechanical mates, explosion views, and motion constraints.
IPT File Format
IPT is the native 3D part file format created by Autodesk Inventor for mechanical design, sheet metal fabrication, and parametric surface modeling.
IAM File Format
IAM is the 3D assembly file format created by Autodesk Inventor, linking multiple .IPT component parts with dynamic positional joints and assembly constraints.
CATPART File Format
CATPART is the native 3D part design format created by Dassault Systèmes CATIA V5/V6, utilized globally in aerospace, automotive, and naval manufacturing.
CATPRODUCT File Format
CATPRODUCT is the 3D assembly structure document used in Dassault Systèmes CATIA V5 to manage product assemblies, kinematics, and digital mockups.
3DS File Format
3DS is a legacy 3D graphics mesh format created for Autodesk 3D Studio DOS, storing geometric meshes, material textures, and keyframe camera data.
GLTF File Format
glTF (Graphics Language Transmission Format) is the open-standard "JPEG of 3D" defined by the Khronos Group for efficient runtime loading of 3D scenes in WebGL and AR/VR.
GLB File Format
GLB is the self-contained binary version of the glTF format, bundling JSON scene descriptions, binary geometry buffers, and textures into a single compact file.
PLY File Format
PLY (Stanford Triangle Format) is a 3D file format designed to store 3D data from optical laser scanners and photogrammetry point clouds.
DAE File Format
DAE (COLLADA) is an XML-based schema standard developed by Sony and managed by Khronos Group for exchanging 3D graphics assets across interactive applications.
URS File Format
URS is primarily a GE Multilin URPC/Settings Editor settings file used to store relay configuration and control parameters. The extension is also used by ControlDraw for User Requirements Specifications and by some unrelated software, so the internal signature should be verified before opening or importing it.
BPS File Format
BPS most commonly refers to the Binary Patching System format, a compact delta-patch file that transforms an original binary into a modified target. It is widely used for retro-game ROM hacks, translations, firmware updates, and other binary distributions; older software also used .BPS for backup or security-related data, so the internal signature should be verified.
FRX File Format
FRX is an overloaded developer file extension used for Visual Basic binary form resources, Visual FoxPro reports, and some XML-based report definitions. Learn how to identify the variant you have and open it with the correct software.
JSONC File Format
JSONC is a variant of JSON that permits single-line (//) and multi-line (/* */) comments, commonly used in developer tooling configurations like VS Code settings.
JSON5 File Format
JSON5 is an extension to JSON that incorporates ECMAScript 5 syntax rules including trailing commas, unquoted keys, single-quoted strings, and inline comments.
YAML File Format
YAML is a human-friendly data serialization language optimized for configuration files, cloud deployment manifests (Kubernetes, Docker Compose, CI/CD pipelines), and object storage.
YML File Format
YML is the standard three-letter file extension shorthand for YAML configuration manifests used across Ansible, GitHub Actions, and Docker Compose.
TOML File Format
TOML is a minimal configuration file format designed by Tom Preston-Werner (co-founder of GitHub) to be easy to read due to unambiguous semantics.
INI File Format
INI (Initialization) is an informal standard plain text configuration format consisting of key-value property pairs organized within bracketed sections.
ENV File Format
ENV files store application environment variables and key-value secrets (API keys, database URIs, tokens) used by dotenv libraries in Node.js, Python, and Docker.
CONF File Format
CONF is a generic plain text configuration format utilized by Linux system services, NGINX web servers, Apache HTTPD, and database engines.
SQL File Format
SQL files contain Structured Query Language commands (CREATE TABLE, INSERT, SELECT, UPDATE) used to build, seed, query, or dump relational database instances.
DB File Format
DB is a generic database file extension used by SQLite, Paradox, Access, or local mobile app storage to hold structured tables, indices, and binary records.
SQLITE File Format
SQLITE is an embedded self-contained, serverless, zero-configuration transactional SQL database engine format widely deployed in mobile operating systems and desktop apps.
SQLITE3 File Format
SQLITE3 is the explicit version 3 database container used by Android, iOS, Chrome, and Python applications to maintain persistent local storage.
ACCDB File Format
ACCDB is the default database format introduced in Microsoft Access 2007, supporting multi-value fields, attachment fields, and integration with SharePoint.
MDB File Format
MDB is the legacy relational database format created by Microsoft Access 97 to 2003 using the Microsoft Jet Database Engine.
BAT File Format
BAT (Batch) is an executable script format created for MS-DOS and Windows command prompt (cmd.exe) containing line-by-line CLI automation commands.
CMD File Format
CMD is an executable batch script format designed specifically for Windows NT/2000/XP/11 command processors, extending classic MS-DOS batch features.
SH File Format
SH is an executable shell script format for Unix, Linux, and macOS terminal shells (Bash, Zsh, Sh) designed for system administration and build automation.
PS1 File Format
PS1 is an advanced task automation script format used by Windows PowerShell and PowerShell Core, supporting .NET object pipelines and cmdlet parameters.
VBS File Format
VBS is a lightweight scripting language file based on Visual Basic, executed in Windows via Windows Script Host (WSH) for desktop automation.
JS File Format
JS is a high-level interpreted programming language format standardized under ECMAScript, serving as the core client-side dynamic scripting language for the web and Node.js environments.
JSX File Format
JSX is an syntax extension for JavaScript created by Meta (Facebook) for building React UI component trees directly within JS logic.
TSX File Format
TSX is the TypeScript version of JSX, combining static type checking with React element component markup.
HTML File Format
HTML (HyperText Markup Language) is the standard markup language format designed by W3C for structuring and presenting documents on the World Wide Web.
CSS File Format
CSS (Cascading Style Sheets) is a cornerstone web formatting language specified by W3C for describing the visual presentation, visual layout, typography, and responsive design of HTML pages.
SCSS File Format
SCSS (Sassy CSS) is an advanced CSS preprocessor language syntax adding nested rules, variables, mixins, functions, and selector inheritance.
PHP File Format
PHP is a widely-used open source general-purpose server-side scripting language format embedded in HTML pages for web application development and CMS engines like WordPress.
PY File Format
PY is the source code file format for the Python programming language, known for clean indentation syntax, high readability, extensive data science libraries, and backend frameworks.
JAVA File Format
JAVA is the source code file extension for the object-oriented Java programming language, compiled by javac into JVM bytecode (.class files).
CLASS File Format
CLASS files contain compiled Java Virtual Machine (JVM) bytecode instructions created from .java source files, executable across any OS with Java Runtime (JRE).
JAR File Format
JAR (Java Archive) is a ZIP-compressed package container holding compiled Java classes, manifest metadata, and asset resources for standalone application deployment.
CPP File Format
CPP is the C++ programming language source file extension, containing object-oriented procedural code compiled to native CPU machine code via GCC, Clang, or MSVC.
C File Format
C is the foundational procedural computer programming language source code format created by Dennis Ritchie at Bell Labs, powering operating system kernels and embedded software.
H File Format
H files are header files used in C and C++ programs to declare function prototypes, global macro constants, structures, and class declarations.
CS File Format
CS is the source code file extension for C# (C-Sharp), an object-oriented programming language created by Microsoft for the .NET framework and Unity game development.
GO File Format
GO is the source code format for Go (Golang), a statically typed compiled language designed at Google by Robert Griesemer, Rob Pike, and Ken Thompson for cloud concurrency.
RS File Format
RS is the source file format for Rust, a memory-safe systems programming language developed by Mozilla and the Rust Foundation offering performance without garbage collection.
RB File Format
RB is the source code file extension for Ruby, a dynamic object-oriented scripting language designed by Yukihiro "Matz" Matsumoto, underlying the Ruby on Rails web framework.
SWIFT File Format
SWIFT is the modern multi-paradigm compiled programming language created by Apple for iOS, iPadOS, macOS, watchOS, and visionOS software development.
KT File Format
KT is the source code file extension for Kotlin, a modern cross-platform concise statically typed language developed by JetBrains and the official primary language for Android app development.
UU File Format
UU is the filename extension commonly used for uuencoded data. A UU file stores binary content as printable ASCII text for transfer through older mail, Usenet, or 7-bit systems; decoding it restores the original file, which may be a ZIP, RAR, PDF, image, audio file, or executable.
FEF File Format
FEF is an overloaded encoded-data extension. Depending on its source, it may contain Fujifilm camera data, a FocusOnCrypt video fragment, CardioLab electrophysiology measurements, a Steuer2001 form file, a Flow Charting export, or an engineering Patran neutral data file.
FFD File Format
FFD is an overloaded proprietary data extension. Depending on its source, it may store game-save data for titles such as Final Fantasy or Diablo, FlashFiler database data, a flat-file descriptor, Fortora Fresh Finance records, FormTool form data, or an ffDiaporama project.
GRN File Format
GRN is primarily the compiled Granny 3D model format from RAD Game Tools. A GRN file can package meshes, surfaces, texture references, skeletal animation, blend graphs, and events for a game. Older or unrelated applications may use .GRN for Masterpoint bridge data or other text-based records.
IFU File Format
IFU is primarily the uncompressed image format created by All Image from Towodo Software. It can represent a USB flash drive, floppy disk, hard drive, or other storage image; the extension may also appear in device-specific or firmware workflows, so confirm the source before opening it.
JRP File Format
JRP is primarily a JMP report file used by SAS JMP to preserve statistical analysis results, charts, tables, scripts, and report settings. Other applications also use .JRP for Electric Quilt documents, Pg4uw programmer job reports, and TracStar industrial reports.
SRL File Format
SRL is an overloaded data extension used by several unrelated applications. Known uses include Cricket Scorer Pro match data, Nintendo DS ROMs used by Wii U and emulator workflows, OpenSSL certificate serial-number files, Steam reward lists, Strelok rifle data, and application-specific databases or saves.
VEP File Format
VEP is primarily an AVS Video Editor project file that stores a video timeline, source-media references, effects, transitions, titles, and project settings. VEP is a project container rather than a finished video, and other software may use the extension for visualization presets or unrelated data.
FRF File Format
FRF is a multi-use file extension most commonly associated with legacy FastReport or FreeReport report templates. Depending on its source, an FRF may also contain vehicle firmware, ABBYY FineReader OCR data, FLIR report data, FontMonger font data, or engineering frequency-response measurements.
GFD File Format
GFD is a multi-use data-file extension most commonly associated with GeForms documents from Gadwin Systems. Other software may use .GFD for GeoFrac data, GNUe Forms menus, or VISUAL EPR energy-field files, so the creating application and internal file signature matter when opening one.
CIFF File Format
CIFF is Canon's Camera Image File Format, a legacy raw-camera image and metadata format associated with early Canon digital cameras and CRW workflows. Learn how to identify and open CIFF-based files safely.
IVS File Format
IVS is an ambiguous file extension used for Aircrack-ng initialization-vector captures and, in some systems, Internet streaming video metadata. Identify the variant before opening it or interpreting its contents.
HOT File Format
HOT is primarily a game-data extension used for The Sims sound resources and 4x4 Evolution hot-lap records. These files are normally referenced by the game rather than opened as standalone documents.
TIB File Format
TIB is the Acronis True Image backup format used for disk images, system recovery, and file-level backup versions. Open it with compatible Acronis recovery software rather than a general archive utility.
TIBX File Format
TIBX is Acronis' newer backup format used for backup chains and cloud or local protection workflows. It is not interchangeable with every legacy TIB archive, so restore it with the Acronis product and version that created it.
M4S File Format
M4S files are usually fragmented MPEG-DASH audio or video segments based on ISO Base Media File Format. They are pieces of a stream, not normally complete standalone videos, and are described by an accompanying MPD manifest.
IPK File Format
IPK is the package format used by opkg on embedded Linux systems such as OpenWrt. It is an ar archive containing package metadata and compressed control and data payloads for installation on a target device.
M3U File Format
M3U is a plain-text multimedia playlist format containing paths or URLs to audio and video resources. Extended playlists begin with #EXTM3U and may include duration and stream metadata.
XCI File Format
XCI is a Nintendo Switch gamecard image format containing a gamecard filesystem and application data. It is used for lawful archival and system workflows, not as a general-purpose document.
GHO File Format
GHO is the native Norton Ghost image extension for sector-level copies of disks or partitions. A GHO image can contain an entire file system and may be accompanied by split segments such as .GHS files.
NSP File Format
NSP is a Nintendo Switch submission-package container used for packaged eShop software, updates, downloadable content, and system components. It is not a general-purpose archive and should only be handled with authorized software and lawfully obtained content.
MHT File Format
MHT is an alternate filename extension for MHTML, a MIME multipart format that stores an HTML page and its referenced resources such as images and stylesheets in one web archive.
MHTML File Format
MHTML, also written as MIME HTML, packages an HTML document and related resources into a single multipart web archive. The format is defined by IETF RFC 2557 and commonly uses the .mhtml or .mht extension.
FUNSCRIPT File Format
FUNSCRIPT is a JSON-based community format for time-synchronized haptic motion data. Its action points pair millisecond timestamps with position values, allowing compatible players and devices to follow a media timeline.
NII File Format
NII (Neuroimaging Informatics Technology Initiative) is a file format widely used in neuroscience and brain imaging research to store 3D and 4D functional Magnetic Resonance Imaging (fMRI) data.
FASTA File Format
FASTA (often .fa or .fasta) is a text-based format for representing nucleotide or amino acid sequences, where nucleic acids or proteins are represented using single-letter codes.
FA File Format
FA is the common shorthand extension for FASTA sequence files used in bioinformatics pipelines, sequence alignment tools, and gene annotation databases.
BAM File Format
BAM is the compressed binary representation of Sequence Alignment Map (SAM) files, storing aligned high-throughput next-generation sequencing (NGS) reads against a reference genome.
SAM File Format
SAM (Sequence Alignment Map) is a tab-delimited text format for storing biological sequences aligned to a reference sequence, created for high-throughput DNA sequencers.
PDB File Format
PDB (Protein Data Bank) format holds 3D atomic coordinates of biological macromolecules (proteins, nucleic acids, complex enzymes) solved via X-ray crystallography or Cryo-EM.
MAT File Format
MAT is the proprietary binary or HDF5-based data container used by MathWorks MATLAB to store variables, numeric arrays, multidimensional matrices, structs, and cell arrays.
HDF5 File Format
HDF5 (Hierarchical Data Format 5) is a high-performance data model and file format designed by the HDF Group to store and manage massive, complex multidimensional scientific datasets.
H5 File Format
H5 is the standard shorthand extension for HDF5 containers, widely adopted in Machine Learning frameworks (TensorFlow, Keras) to store deep neural network model weights.
NETCDF File Format
NetCDF (Network Common Data Form) is a set of software libraries and self-describing array-oriented data formats for climate science, meteorology, and oceanography.
NC File Format
NC is the ubiquitous file extension shorthand for NetCDF containers, storing spatial temporal multidimensional climate grids.
LAS File Format
LAS is an open binary specification created by the American Society for Photogrammetry and Remote Sensing (ASPRS) for interchange of 3D LiDAR point cloud data.
LAZ File Format
LAZ is the lossless compressed format for LAS LiDAR data files developed by Martin Isenburg (LASzip), reducing file sizes by up to 85% without precision loss.
PCD File Format
PCD is the native 3D point cloud file format used by the Point Cloud Library (PCL) open-source framework for 3D spatial perception and robotics autonomous driving sensors.
SAV File Format
SAV is the binary database file format created by IBM SPSS Statistics, containing structured research survey responses, numeric variables, value labels, and dictionary metadata.
POR File Format
POR is an ASCII portable dataset format generated by IBM SPSS to enable survey data interchange across heterogeneous mainframes and operating systems.
RDATA File Format
RDATA (or .RData) is the binary data persistence format used by R statistical language, capable of saving entire multi-object R environment workspaces.
RDS File Format
RDS is a binary format created by the R programming language to serialize and compress a single R data structure (data frame, matrix, linear model) to disk.
SAS7BDAT File Format
SAS7BDAT is the primary binary dataset container generated by SAS (Statistical Analysis System) enterprise software for pharmaceutical, clinical trial, and financial analytics.
DTA File Format
DTA is the native binary data format used by Stata statistical software for microeconometric research, public health epidemiology, and social policy modeling.
CONT File Format
Learn what .CONT files are, why they appear beside camcorder video recordings, and which Panasonic or Canon software may be needed to open them. Because CONT is used by more than one camera ecosystem, identify the file source before attempting conversion or repair.
APK File Format
Learn everything about .APK (System & Executables) file extension. Discover software tools to open .APK files on Windows, macOS, Android, and iOS, convert online, and check file header security.
EXE File Format
Learn everything about .EXE (Documents) file extension. Discover software tools to open .EXE files on Windows, macOS, Android, and iOS, convert online, and check file header security.