Universal File Opener & Editor

Open, read, and edit PDF, Word, Excel, PowerPoint, and dozens of other file types, all fully offline. Universal File Opener has no INTERNET permission, so the app itself cannot upload files or send analytics. No ads. No account. No sign-in.

Every feature is free for your first 15 distinct files. One purchase removes the file limit forever, with no subscription.

It is a document reader, file viewer, and editor in one, and it opens PDF, Word (DOC, DOCX), Excel (XLS, XLSX), PowerPoint (PPT, PPTX), OpenDocument (ODT, ODS, ODP), RTF, XPS, ZIP, RAR, 7Z, TAR, CSV, Markdown, EPUB, calendar (ICS), contacts (VCF), saved email (EML), JSON, XML, source code, SQLite databases, images, audio, video, certificates, fonts, and unknown files as text or hex.

PRIVATE BY DESIGN, NOT BY PROMISE

• No INTERNET permission: no uploads or telemetry. Share, Open with, Print and Read aloud use your chosen app or service. Android's file picker opens files from, and saves files to, your chosen storage provider; a cloud provider may sync files stored there under its privacy practices.

• No ads, no account, no analytics, no tracking SDKs, no watermarks, and no video before your file opens.

• Optional diagnostics and request emails are created only when you choose. They omit file contents, names, paths, hashes, clipboard text and payment details unless you attach a file.

• The app interface is currently available only in English.

A REAL EDITOR, NOT JUST A READER

• PDF editor: fill forms, sign, stamp, draw and mark up; add text, images, notes, page numbers, Bates IDs, labels, headers, footers and watermarks; reorder, insert, rotate, split, extract and combine pages; export pages and embedded images; compress, crop, redact, flatten, edit properties, unlock protected PDFs and password-protect a copy.

• Word and PowerPoint: edit text, formatting, lists, styles, links, comments, notes, images, tables, headers and footers, page setup, slide order, shapes and backgrounds; find and replace, review tracked changes, undo and redo.

• Excel: edit cells, formulas and formatting; sort, filter, fill, insert or delete rows and columns, merge cells, freeze panes, manage sheets, comments, links, dropdowns, conditional formatting and charts.

• Text, code, CSV, TSV, hex, SQLite and images: edit text and grids, patch bytes, edit database rows, crop, rotate, resize, compress, draw and adjust color.

• Save images, text, code, Markdown, CSV, spreadsheets and Office or web documents as PDF; combine images into one PDF.

All editing runs on your device. For writable files, changes save back through Android's file access system; for read-only shares, use Save As to make an editable copy.

WHAT YOU CAN OPEN

• PDF reader with navigation, labels, zoom, search, highlights, text copy, links, layers, signature/form/action inspection, comments, review summaries, attachment saving, extracted-text reading, metadata and outlines.

• Word, PowerPoint, Excel, and OpenDocument viewer showing document structure, tables, images, links, notes, comments, sheets, formulas, charts, and slide canvases.

• Markdown, HTML, EPUB, source code, JSON, XML, YAML, SQL, logs, and other text and data formats with search and syntax highlighting.

• Images with pan and zoom, audio and video playback, font previews, X.509 certificate details, and SQLite table browsing.

• ZIP, RAR (classic RAR4 with passwords), 7Z, TAR, APK, JAR, GZ, BZ2, and XZ archive browsing and safe extraction.

A note on Office files: this is a progressively richer engine for reading, searching, and editing, not a clone of desktop Office. Modern Office support focuses on useful mobile preview and editing while preserving untouched package parts. Legacy DOC, XLS, and PPT files use basic readable-text extraction with clear conversion guidance.

HONEST FORMAT SUPPORT

RAR5 and unsupported formats such as CAB, ISO, DMG, LHA, and LZH say so clearly instead of pretending partial support. Unknown files still open as text or hex when possible.