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Side-by-side features, use cases and pricing — because the right pick depends on your job and budget, not just the ranking.
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ChatDOC
✓ verifiedFree
AI assistant extracting and summarizing document info; real adoption.
90K visits/mo15K saves
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Zeli
✓ verifiedFree
Lightweight digest reader that curates and summarizes trending Hacker News posts and Hugging Face papers to speed up daily reading.
36K visits/mo
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LightPDF AI
✓ verifiedFreemium
AI-powered online and desktop PDF suite to edit, convert, OCR, sign, organize and chat with documents across devices.
1.8M visits/mo12K saves
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AI PDF Summarizer
✓ verifiedFree trial
Online PDF suite for summarizing, editing, converting, and signing.
12M visits/mo8.7K saves
Pricing
No public pricing
No public pricing
No public pricing
Free: $0
Vial: $20
Inkwell: $40
No public pricing
Core features
- ✦Chat with documents
- ✦Instant answers with cited sources
- ✦AI analysis of selected texts/tables
- ✦Query across multiple documents
- ✦Supports various file formats
- ✦AI summaries of top Hacker News posts
- ✦Hugging Face daily paper digests
- ✦Trending/hottest post filtering including Ask HN and Show HN
- ✦Quick-scan article preview format
- ✦Edit, convert and annotate PDFs
- ✦OCR and scanned-PDF enhancement
- ✦AI summarize and chat with documents
- ✦E-signature and document organization
- ✦Batch processing
- ✦Cross-platform: Web, Windows, Mac, iOS, Android
- ✦Automatic transcription and summarization of TTRPG sessions
- ✦Customizable narrator and background music
- ✦Audio/video recap generation
- ✦Support for various audio formats
- ✦Option to proofread and edit the summary
- ✦AI-powered PDF summarization
- ✦PDF editing and signing
- ✦PDF conversion to various formats
- ✦Form filling and annotation
Use cases
- →Summarizing long documents
- →Explaining complex concepts
- →Finding key information in seconds
- →Turbocharging research
- →Developers keeping up with Hacker News without reading everything
- →AI researchers scanning new papers quickly
- →Tech enthusiasts wanting a daily curated digest
- →Convert and edit PDFs online or on desktop
- →Summarize or ask questions about documents
- →OCR scanned PDFs into editable text
- →Sign and organize documents across devices
- →Creating recaps of Dungeons & Dragons, Pathfinder, or other TTRPG sessions
- →Sharing recaps with your party at the beginning of the next session
- →Immortalizing game sessions with captivating audio/video recaps
- →Summarizing research papers and books
- →Editing and signing contracts
- →Converting PDFs to Word or JPG
- →Filling out tax and official forms
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