| What it does | Free PDF tools that run entirely in your browser with no file uploads or tracking
| Read papers. Keep what you learn.
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| Stage | Startup
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| Founded | 2026
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| Based in | IN
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| Pricing model | Free
| Freemium
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| Pricing | All PDF tools are completely free with no signup required.
| Free: desktop app and self-hosted server. Lite: $2/month or $20/year. Plus: $5/month or $50/year. Pro: $20/month or $200/year.
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| Key features | - Image to PDF conversion supporting JPEG, PNG, WEBP, HEIC, GIF, BMP, TIFF and SVG
- Merge multiple PDFs into a single document
- Word document to PDF conversion preserving tables and formatting
- PDF to image export as JPG or PNG
- PDF protection and unlocking
- Add page numbers to PDFs
- Digital PDF signing
- Works offline after initial page load
- File size handling up to 100 MB on desktop and 20-50 MB on mobile
| - Highlight, draw, and annotate on PDFs with every mark becoming a note
- Outliner with live Markdown and LaTeX for mathematical notation
- AI chat to ask questions about papers with cited answers
- Full-library search across notes, highlights, and all PDFs
- Shared workspaces with live cursors and comments for collaboration
- Works offline on iPad, Android, and desktop with automatic sync
- Integrations with Zotero, Obsidian, Logseq, and Notion
- Browser extension for one-click saving papers with metadata
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| What makes it different | - No account or signup required for any tool
- Uses auditable open-source libraries anyone can inspect
- No AI training on your documents
- Verifiable privacy through browser Developer Tools
| - Self-hosted option with one Docker image for full control over data
- Live math support with Markdown and LaTeX directly in outliner notes
- Works on any device: Windows, macOS, Linux, iPad, Android, and browsers
- No vendor lock-in with SQLite files and export at any time
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 3 | 0 |
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| Citation Flow (Majestic) | 29 | 9 |
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| Referring domains (Majestic) | 49 | 1 |
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ZeroCloudPDF
Gamma PDF