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. LangPDF records 0 monthly visits with 0% growth and Freemium pricing.

Generate polished PDFs from a simple prompt
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chatpdf.com | langpdf.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 1.04M (1,044,477) | 0 (0) |
| MoM Traffic Delta | -40.47K (-3.7%) |
| 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (9.6%) | 🌐 Global (—) |
|---|
| Direct Visits / mo | 457.79K | 0 |
|---|
| User Rating | 4.2 | 3.8 |
|---|
| 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.

Generate polished PDFs from a simple prompt
Describe the document you need in plain language and get a finished, structured PDF back.
Start from ready-made layouts for invoices, resumes, contracts, reports, proposals, receipts and more.
Preview the generated document online and download it only once it looks right.
Covers invoices, resumes, contracts, reports, quotes, letters, SOPs and product requirement documents.
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

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

Cross-platform PDF editing with GPT-powered AI for reading, translating, and signing documents
Includes robust developer APIs for custom document workflows, but free tier limits document page counts.

Free AI document translation that keeps your original layout intact
AI document translation that keeps your original layout intact

SpecialistTranslate documents of any format while keeping the original layout
Strong multi-format document chat and form filling capabilities, but interface can feel slightly more cluttered.
Free AI-powered PDF translation with layout preserved
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
AI PDF translation that keeps the original layout intact
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
Free AI document translation that keeps your original layout intact
AI document translation that keeps your original layout intact
SpecialistTranslate documents of any format while keeping the original layout
Strong multi-format document chat and form filling capabilities, but interface can feel slightly more cluttered.
Free AI-powered PDF translation with layout preserved
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
AI PDF translation that keeps the original layout intact