ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. Deta Surf records 5,322 monthly visits with -49% growth and Free pricing.
Chat with any PDF, video, or website and get cited answers in seconds
An intelligent notebook that turns browsing, files and video into notes
| Dimension / Metric | | |
|---|---|---|
| Official Domain | chatpdf.com | deta.surf |
| Pricing Model | Freemium | Free |
| Monthly Visits | 1.04M (1,044,477) | 5.32K (5,322) |
| MoM Traffic Delta | -40.47K (-3.7%) | -5.12K (-49%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🇺🇸 United States (33.9%) |
| Direct Visits / mo | 457.79K | 2.04K |
| User Rating | 4.2 | 4.4 |
| Supported Platforms | Website | Website |
Chat with any PDF, video, or website and get cited answers in seconds
Every response is anchored to your source document with clickable citations that scroll to the exact passage, so verification takes seconds instead of page-by-page searching.
Organize documents into folders and query many files in a single conversation to compare arguments, cross-reference findings, or study a whole syllabus at once.
Condense long papers, reports, and contracts into key takeaways, and translate or query documents in any language — including mixing a source language with a different question language.
Generate flashcards and slide decks from your material, and use the built-in AI writer and AI detector for drafting and checking academic text.
An intelligent notebook that turns browsing, files and video into notes
Collect web pages, PDFs, images, notes and sketches into a single space instead of juggling separate apps.
Your content is stored on your device with import and export options, and the core source is public on GitHub.
Connect cloud LLMs with your own API key or run local models, choosing the intelligence layer yourself.
Generated notes link directly back to the source page, video or document they came from.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Free AI flashcard and study tools for students
Free AI flashcard and study tools for students
Free / Open-sourceCompletely free PDF reading and editing tool with AI assistant, though basic compared to dedicated platforms.
Free AI-powered PDF editor, converter and reader for every device
Free AI-powered PDF editor, converter and reader for every device
The AI workspace where researchers read, write, and cite with every claim traceable to its source
The AI workspace where researchers read, write, and cite with every claim traceable to its source
SpecialistThe AI browser that reads between your tabs
Combines full desktop PDF editing software with AI chat, but requires software installation for full features.
SpecialistTurn any lecture, file, or video into notes, flashcards, and quizzes
SpecialistTurn any lecture, file, or video into notes, flashcards, and quizzes
Translate, summarize, and understand documents in 154 languages without losing the layout
Translate, summarize, and understand documents in 154 languages without losing the layout
SpecialistFree AI Summarizer for text, articles, URLs and images
SpecialistFree AI Summarizer for text, articles, URLs and images
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.
