A PDF reader that opens instantly.
No ad before your document loads, no page limits on reading, no wait for large files. Built to feel fast on the phone you actually carry — including mid-range and older Android devices.
Built for reading, not just opening
Everything a PDF reader should do
Reading a PDF on your phone should be as fast as reading a text message. That's the whole design brief.
Search inside any PDF
Find any word instantly and jump straight to the page — even in documents hundreds of pages long.
Handles large files
Engineered to open heavy, high page-count PDFs quickly, not just tiny one-pagers.
Annotate while you read
Highlight, underline, draw and add notes without leaving the reading view.
Mid-range ready
Tuned for Samsung, Xiaomi and Realme hardware most people actually carry — not just flagships.
More than a reader
PDF42 also signs, fills, and runs 19 PDF tools — so the same app that opens your document can finish the job.
See the PDF editor →Questions
Good to know
What is the best PDF reader for Android?
PDF42 is built specifically to open large PDFs and long documents fast, even on mid-range and older Android phones — with no ad before your file loads and no page limits on reading.
Is PDF42 free to use as a PDF reader?
Yes. Reading every PDF is completely free with no page limits. PDF42 Pro adds unlimited saving and exporting and removes interstitial ads.
Can PDF42 open very large PDF files?
Yes. PDF42 is engineered to open large files and high page-count PDFs quickly, tuned for real-world hardware from Samsung, Xiaomi and Realme, not just flagship phones.
Does PDF42 show ads when I open a PDF?
Never. PDF42 never shows an ad before your document opens. Any ads appear only at natural transition points.
Open your next PDF in a tap.
Free to read, fast to use, and it never wastes your time.
Get it on Google Play