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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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Readable
✓ verifiedPaid
Instant English-to-Japanese PDF translation preserving layout; useful focused tool.
87K visits/mo177 saves
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PDF.ai
✓ verifiedFreemium
Well-known chat-with-PDF tool for summarizing and extracting; strong traffic.
484K visits/mo2.7K saves
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Chapterize
✓ verifiedFreemium
AI summarizer that distills books, videos, papers and articles into key insights, with chat, audio and Kindle export.
3.5K visits/mo
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Summify
✓ verifiedFreemium
Cross-AI knowledge layer turning videos, PDFs and voice notes into searchable pods usable inside Claude, ChatGPT and more.
23K visits/mo30K saves
Pricing
Pro Standard (Yearly): 800 /month
Pro Premium (Yearly): 4,000 /month
for Business: Contact for Pricing
Hobby: $0
Pro: $10/mo
Ultimate: $20/user/mo
Enterprise: $30/user/mo
Free: $0 (2 summaries/mo)
Growth: $15/mo (50 summaries/mo)
Starter: $8/mo ($100/yr, 800 transcription minutes/mo)
Pro: $16/mo ($200/yr, 1,800 minutes/mo)
Max: $33/mo ($400/yr, 8,000 minutes/mo)
Free trial available
Core features
- ✦Instant PDF translation
- ✦Layout preservation
- ✦Side-by-side English and Japanese viewing
- ✦Chrome extension for one-click translation
- ✦Translation without DeepL subscription (optional)
- ✦Chat with PDF documents
- ✦Summarize PDF content
- ✦Extract information from PDFs
- ✦Source citation for answers
- ✦OCR support
- ✦AI Agents for document analysis
- ✦Capture & Ask feature
- ✦Chatbot widget (add-on)
- ✦AI summaries of books, videos, papers and articles
- ✦Key-message extraction
- ✦AI chat with your documents
- ✦Audio summaries
- ✦Adjustable LLM settings
- ✦Export options including Kindle
- ✦YouTube summarization, transcription, and translation across 130+ languages
- ✦PDF and document summarization for research or contracts
- ✦Voice note recording, transcription, and structuring
- ✦AI chat grounded in a user's captured sources with citations
- ✦Eleven summary styles (General, Deep Dive, Q&A, Academic, etc.)
- ✦MCP integration to plug knowledge pods into any compatible AI
Use cases
- →Translating English research papers into Japanese
- →Translating technical specifications from English to Japanese
- →Quickly understanding English documents in Japanese
- →Analyzing legal documents
- →Summarizing financial reports
- →Extracting key information from books
- →Reviewing scientific papers
- →Understanding user manuals
- →Creating employee training materials
- →Getting the gist of long content quickly
- →Reviewing videos or podcasts as summaries
- →Building a personal library of summaries
- →Building a client knowledge base an AI assistant can reference accurately
- →Reviewing pitch decks and due-diligence documents across devices
- →Researching academic papers and podcasts with grounded Q&A
- →Keeping AI tools consistent on brand voice or internal methodology across projects
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