| What it does | Free online PDF tools that run in your browser with no uploads or sign-up required
| Read papers. Keep what you learn.
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| Stage | Not given
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| Founded | Not given
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| Based in | GB
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| 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 | - Merge PDFs
- Split and extract PDF pages
- Compress PDF with custom file size
- Convert between PDF and Word, Excel, PowerPoint
- Convert images to and from PDF
- Edit PDF text and add content
- Sign PDF with signature
- OCR scanned PDFs
- Protect PDF with password
- Rotate, reorder and delete pages
| - 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 | - Files processed entirely on your device, never uploaded to servers
- No account, sign-up or tracking required
- 31 tools in one place for all PDF jobs
- Works on any device with a modern browser
- No watermarks or daily limits
| - 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) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 13 | 9 |
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| Referring domains (Majestic) | 1 | 1 |
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PDF ProMaster
Gamma PDF