| What it does | Free online PDF and image tools that run privately in your browser with no upload 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 | Not given
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| Pricing model | Not given
| Freemium
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| Pricing | Online tools: free with ads. Desktop apps (LimePDF, LimeWord, LimeSheet, LimeIDE): ads-supported free tier planned; paid options to be announced at launch.
| 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, split and reorder PDF pages
- Compress and convert PDFs to JPG or vice versa
- Password protect, redact and crop PDFs
- Remove image backgrounds
- Hex, RGB and HSL colour picker and converter
- Convert Unix timestamps to dates and vice versa
- AI-powered PDF summarization coming 15 Nov
- Ask questions about PDF documents with AI coming 15 Nov
- Offline AI features running locally on your computer
| - 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 | - All processing happens locally in your browser; files never upload to servers
- No sign-up, no account and no watermarks required
- Works offline once the page loads
- AI features run offline on your own computer, not in the cloud
- Content never used for training AI models
| - 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) | 0 | 9 |
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| Referring domains (Majestic) | 0 | 1 |
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Gamma PDF