PDF file format

Portable Document Format

PDF keeps the layout of a document fixed on every screen and printer. It is the standard for sending and archiving documents.

Where PDF files open

Browsers

Every current browser opens PDF files.

Yes

iPhone

Opens in the Files and Books apps.

Yes

Word

Word can open a PDF for editing, but the layout may shift.

Partly

5 formats

Image

Document

110 formats

Image

Document

Spreadsheet

Presentation

Drawing

Ebook

Markdown and HTML