Page rendering, pinch-to-zoom, search, bookmarks, and outline navigation. Handles large documents without re-rendering every scroll.
Folio PDF.
A free, ad-free document opener for Android. PDFs, Word docs, spreadsheets, slide decks, and Markdown - one app, no account.
Free public utility. No subscription, no in-app purchase, no ads.
Word documents
.doc, .docx, and .odt - text, headings, tables, and images rendered in line so you can read what was written, not a stripped-down version of it.
Spreadsheets
.xls, .xlsx, .ods, and .csv - multi-sheet workbooks with formula-result display and frozen headers.
Slides
.ppt, .pptx, and .odp - full-bleed slide rendering with speaker notes and an outline view for quick navigation.
Markdown
Built-in editor with live preview. Code blocks, tables, and links rendered as you type. Save back to the same file.
Plain text
UTF-8 safe, large-file friendly. Open log files and config files without thinking about encoding.
Reading a document should not require a subscription.
Most Android document apps either charge a monthly fee, fill the screen with ads, or both. Folio PDF is the opposite of that - a small, ad-free reader for the formats you already have. It costs nothing because reading documents should not cost anything.
The app is part of the ClassEve product family but it does not require a ClassEve account. Open it, point it at a file, and read.
Android 10 or later
Works on Samsung, Pixel, OnePlus, Xiaomi, and every major manufacturer.
Storage access
Files open through the system picker - the app reads only what you point at, not the rest of your storage.
Offline by default
Rendering happens entirely on-device. No file leaves the phone unless you share it yourself.