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.
ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. DeepSeek AI – Floating AI Chat records 0 monthly visits with — growth and Freemium, Free pricing.

Highlight text on any page and get instant DeepSeek-powered answers in a draggable floating window.
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chatpdf.com | chromewebstore.google.com |
| Pricing Model | Freemium | Freemium, Free |
| Monthly Visits | 1.04M (1,044,477) | 0 (0) |
| MoM Traffic Delta | -40.47K (-3.7%) | 0 (—) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🌐 Global (—) |
| Direct Visits / mo | 457.79K | 0 |
| User Rating | 4.2 | 3.8 |
| Supported Platforms | Website | Browser Extension |
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.

Highlight text on any page and get instant DeepSeek-powered answers in a draggable floating window.
Select text on any website to trigger a context-aware prompt, so answers stay anchored to the passage you are reading.
Connect a DeepSeek key or any OpenAI-compatible endpoint; no mandatory account and no bundled credit markup.
Move and resize the panel anywhere on screen so it never blocks the content you are trying to read.
Answers appear token by token and support Markdown lists, code blocks, and LaTeX math notation.
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.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.

All-in-one AI assistant across web, browser, desktop and mobile
All-in-one AI assistant across web, browser, desktop and mobile
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
One-click AI assistant for browsing, writing and research
One-click AI assistant for browsing, writing and research

Combines full desktop PDF editing software with AI chat, but requires software installation for full features.

Catholic answer engine grounded in 30,000+ cited sources
One privacy-first AI client for GPT, Claude, Gemini and more
One privacy-first AI client for GPT, Claude, Gemini and more
One browser agent that combines every major AI model with web automation

Custom AI agents trained on your documentation and knowledge base
Custom AI agents trained on your documentation and knowledge base
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.