What Is a PDF File? (And How to Open One) - Lifewire
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WebSep 13, 2022 · 265. What Is a PDF File? How to open, edit, and convert PDF files. By. Tim Fisher. Updated on September 13, 2022. Reviewed by. Ryan Perian. What to Know. A PDF file is a Portable Document Format file. Open one with Adobe Reader, SumatraPDF, a browser, or another PDF reader.
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