A .PDF file is a Portable Document Format associated with Documents. Universal document exchange format preserving fonts, formatting, and vector layouts.

How do I open a .PDF file on Windows or Mac?

You can open .PDF files using Adobe Acrobat Reader, Google Chrome / MS Edge / Safari, PDFgear (Free Editor), Apple Preview. If you do not have native software installed, you can use OpenAnyFile's free File Identifier or convert .PDF to a standard format in your browser.

Is a .PDF file safe to open?

This format carries a safety rating of Medium Risk. PDF documents can contain embedded JavaScript, external links, and launch actions. Use safe PDF viewers like Chrome or Edge.

Can I convert a .PDF file to other formats?

Yes! .PDF can be converted to formats such as .DOCX, .JPG directly in your web browser.

What should I do if a .PDF file is corrupted or won't open?

If your .PDF file displays an invalid header or signature error, check its magic bytes hex header (25 50 44 46 2D (%PDF-)) using OpenAnyFile's Magic Byte Detector or follow our step-by-step file repair guide.

Documents • MIME: application/pdf

.PDF – Portable Document Format

Universal document exchange format preserving fonts, formatting, and vector layouts.

Primary Category Documents

MIME Type application/pdf

Magic Bytes Signature 25 50 44 46 2D (%PDF-)

Security Risk Rating Medium Risk

Recommended Software to Open .PDF

Adobe Acrobat Reader

windows, mac, android, ios • Free

Google Chrome / MS Edge / Safari

windows, mac, linux, android, ios • Free

PDFgear (Free Editor)

windows, mac, ios • Free

Apple Preview

mac • Free