Renders on-device. Navigate, pinch to zoom, search the full document, print, and share. Long-press copies the text off any page.
Folio PDF.
A free, ad-free Android opener for PDF, DOCX, RTF, XLSX, CSV, PPTX slide outlines, Markdown, and plain text - one app, no account.
Free public utility. No subscription, no in-app purchase, no ads.
Version 1.1.5 · 10.2 MB · released Aug 17, 2026
SHA-256abecdaf862675883fe59911a3927ac362eb9db010f1f5be4d584e80dbac67649
- Open from anywhere. Tap a document in your file manager, email, or chat and choose Folio — or open Folio and pick the file yourself. It registers for every format it reads.
- Read. Move through PDF pages, pinch to zoom, or open the app’s focused reading views for documents, sheets, and slides.
- Edit the editable. Markdown and plain text open in a live editor and save back to the same file. Other supported formats are read-only; PPTX is presented as a text outline rather than a pixel-faithful slide renderer.
- Share only when you choose. Nothing leaves the phone unless you tap share yourself.
Word documents
.docx and .rtf in a clean reading view — text, headings, and tables, laid out to be read rather than reflowed into soup.
Spreadsheets
.xlsx and .csv as a real table, with the values your workbook actually holds.
Slides
.pptx as a clean outline of every slide title and its body text — the content, without waiting on a rendering engine.
Markdown
Built-in source editor with a native preview. Edit and save back to the same file without a WebView.
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 fast, 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 9 or later
Requires Android 9 or later. File-picker, share, print, and rendering behavior can vary by device and installed apps.
Formats
Modern formats: .pdf, .docx, .rtf, .xlsx, .csv, .pptx, .md and plain text. The pre-2007 Microsoft formats (.xls, .ppt) and OpenDocument (.ods, .odp) are not supported.
Storage access
Files open through the system picker - the app reads only what you point at, not the rest of your storage.
Offline by construction
Folio ships without Android’s Internet permission. Not disabled — absent. It cannot send your documents anywhere, because it cannot open a connection at all.
Common questions
What is Folio PDF?
Folio PDF is a free, ad-free document reader for Android. It opens PDF, DOCX, RTF, XLSX, CSV, PPTX slide outlines, Markdown, and plain text in one app, with no account or subscription.
What file formats does Folio PDF open?
PDF; Word (.docx and .rtf); spreadsheets (.xlsx and .csv); slide outlines (.pptx); Markdown; plain text; JSON; and XML. Legacy .doc, .xls and .ppt, and OpenDocument formats, are not supported.
Is Folio PDF really free, with no ads?
Yes. No subscription, no in-app purchase, and no ads. It is a free public utility from ClassEve.
Does Folio PDF require an account?
No. There is no sign-up. Open the app, pick a file, and read.
Is it private and offline?
Yes. Rendering happens entirely on-device. No file leaves your phone unless you share it yourself.
What Android version is required?
Android 9 or later. The current public-beta channel is a direct APK from the Folio PDF page; there is no public Google Play listing yet.
Can Folio PDF search or copy PDF text?
Yes. Folio PDF includes PDF search and long-press copy of the extracted text for the current page. Drag-handle text selection and bookmarks are not included in the current release.