.PDF File Extension
Full form: Portable Document Format
What is a .pdf file?
A fixed-layout document format created by Adobe that looks the same on every device and operating system. Files that end with .pdf belong to the document family of file types, so your computer links them with a suitable program automatically.
Where is .pdf used?
E-books, forms, invoices, admit cards, certificates and study notes. Because the format is so common, almost every modern device and software understands it.
Examples of .pdf file names
admitcard.pdf, notes.pdf
How to open a .pdf file
You can open it with: Adobe Reader, Chrome, Edge, Foxit. If it does not open, check that the file is not damaged and that you have downloaded it fully; also confirm that the extension was not renamed by mistake.
Quick tips
Never rename a file just to change its extension, because that does not convert the data inside. Use a proper converter or the Save As / Export option. Keep a backup copy of important document files before editing them.