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.