SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
#1ChatPDF records 1,044,477 monthly visits with -3.7% month-over-month growth and Freemium pricing. GoPDF records 32,069 monthly visits with +0.3% growth and Freemium pricing.

An all-in-one online PDF editor with AI chat, quizzes and invoicing
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chatpdf.com | gopdf.io |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 1.04M (1,044,477) | 32.07K (32,069) |
| MoM Traffic Delta | -40.47K (-3.7%) |
| +81 (+0.3%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🇺🇸 United States (18%) |
|---|
| Direct Visits / mo | 457.79K | 11.34K |
|---|
| User Rating | 4.2 | 4.1 |
|---|
| 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 all-in-one online PDF editor with AI chat, quizzes and invoicing
Ask questions about a document and get answers drawn from its content, so long reports and contracts do not need to be read line by line.
Modify text and images directly, add pages, headers and footers, use search and replace, and fill or sign forms with manual or image signatures.
Convert between PDF, Word, JPG and HTML, shrink oversized files, merge or split documents and remove excess pages.
Generate tailored quizzes from source content and create, manage and send invoices from the same platform.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
#1A free, AI-powered PDF editor for every device
AI-powered PDF editor for Windows, Mac and iOS

Free AI-powered PDF editor, converter and reader for every device

All-in-one online PDF editor with AI helpers for reading, summarizing, and generating documents

Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents
Chat with any PDF and get cited answers instantly

Free browser-based PDF toolkit with AI OCR and chat
Chat with any PDF and add an AI chatbot trained on your own content
SpecialistPrivate AI that answers from your own documents, on Mac and Windows

Great for comparing multiple documents and spreadsheets side by side, but smaller overall user community.
Clean interface for complex technical document summarization, but offers fewer advanced export formatting options.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Free AI-powered PDF editor, converter and reader for every device
All-in-one online PDF editor with AI helpers for reading, summarizing, and generating documents
Chat with any PDF and add an AI chatbot trained on your own content
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
Great for comparing multiple documents and spreadsheets side by side, but smaller overall user community.