Universal Reader

Universal Reader is the ultimate document viewing and file companion designed for students, developers, and professionals. Organize, open, and read almost any file format inside a beautiful, unified workspace.

From Office documents and interactive Jupyter Notebooks to PDFs, e-books, email messages, code syntax, and zip archives, Universal Reader handles your entire library in one place—100% offline, secure, and fast.

Comprehensive File Format Support:
1. Microsoft Office & Text Documents
• Word Documents: Open and read DOC and DOCX files.
• Excel Spreadsheets: View spreadsheet sheets (XLS, XLSX) rendered cleanly.
• PowerPoint Presentations: Open PPT and PPTX slides.
• Document Formats: Read Rich Text Format (RTF) and Plain Text (TXT) files.
• Export to PDF for Office docs

2. Advanced PDF Viewer
• Fast PDF rendering with interactive zooming, panning, and page navigation.
• Local text extraction for easy copy-pasting.

3. Jupyter Notebook (.ipynb) Companion
• Open and view Jupyter Notebooks (.ipynb) with cell-level rendering.
• Visibility Controls: Hide or show code inputs, markdown descriptions, and execution outputs.
• Slideshow Mode: Project your notebooks as Reveal.js slideshows with custom transitions.
• Cell Editor: Edit text or markdown cell content on the fly.
• Export to PDF available

4. Code & Script Viewer (Syntax Highlighting)
• Clean code viewing experience supporting over 30 languages (Java, Kotlin, Python, C++, C#, JavaScript, HTML, CSS, XML, YAML, Rust, Swift, Markdown, and more).
• Safe Read-Only Mode: Perfect for syntax-highlighted code reviews without accidental changes.
• Export to PDF available

5. E-Book & Comic Book Library
• E-Books: Open EPUB, MOBI, KF8 and FB2 formats with custom text scaling and styling.
• Comic Books: Browse CBZ comic documents.

6. Archive Browser & Extractor
• Open and browse compressed archives including ZIP, RAR, 7Z, and TAR.
• View and read files directly from inside the archive.

7. Email Messages & Calendars
• E-Mail: Read Outlook message files (.msg) and standard emails (.eml) with attachments.
• Calendar: Open and inspect calendar schedules (.ics).
• Export to PDF available

8. Data Tables & CSV Viewer
• Render CSV and TSV files in a clean, scrollable grid-table layout.
• Display the data in a beautiful charts

Core Productivity Features:
• Custom Workspaces (Collections): Organize files into projects with custom emoji icons, titles, and color palettes.
• Deep Offline Search: Instantly search keywords across all your PDFs, notebooks, code, and text files. Search results display highlighted text snippets.
• GitHub File Import: Download and view individual files directly by pasting their GitHub URL.
• Secure & Offline: Indexing and document rendering are performed entirely on your device. Your data never leaves your phone.
• Material Design 3 UI: Premium design system supporting custom accent colors and dark mode.
• Ad-Free Experience (Pro): Upgrade to remove ads and unlock unlimited indexing capacities and more.