ChatPDF

What it is

Web app for chatting with a PDF (or Word, PowerPoint or text file). Free plan covers 2 documents a day; a paid Plus plan raises limits.

Beginner-friendlyResearch & LearningFree

Visit ChatPDF ↗

Our take

Beginner-friendly · Free: 2 PDFs/day; Plus about $19.99/mo (price from independent review; maker lists Plus without a public dollar figure on the homepage)

Handy for a single PDF Q&A with citations. Skip Plus if NotebookLM already covers your stack of files for free.

Also look at Gemini Notebook (NotebookLM) and Claude.

The quick breakdown

Good for: Dropping one PDF in the browser and asking a few questions with page citations, without a Google account.
Not great for: Working across many sources at once. NotebookLM is free for that.
Watch out: Free allows 2 documents a day. Plus is about $19.99 a month in independent checks, which is steep next to free NotebookLM for multi-file work.
What people say: Researchers on r/research still ask whether Chat-PDF apps are worth paying for when general chatbots already read files. Side-by-side threads on r/AIToolTracker say ChatPDF is fast for a single paper but thin when you need cross-section context.

Based on ChatPDF homepage (free limits and Plus), r/AIToolTracker: ChatPDF vs SciSpace vs ChatDOC, r/research: Are Chat PDF AI really worth it?, WeTestedAI: ChatPDF review (Plus price). Checked Oct 16, 2026. Prices change, so confirm before you pay.

Good for

Quick facts

Price: Free (Free: 2 PDFs/day; Plus about $19.99/mo (price from independent review; maker lists Plus without a public dollar figure on the homepage)).
Works on: Web. You get: text.
Last checked: Oct 16, 2026.
What it is: ChatPDF is a research & learning tool. Web app for chatting with a PDF (or Word, PowerPoint or text file). Free plan covers 2 documents a day; a paid Plus plan raises limits.
Where it was found: Added by ShipRadar editors as a well-known tool in Research & Learning.
Tags: Free tier, Research.
Traction: Editor's pick.
Official link: www.chatpdf.com

Common questions

What is ChatPDF good for?

Dropping one PDF in the browser and asking a few questions with page citations, without a Google account. Working across many sources at once. NotebookLM is free for that.

Is ChatPDF free?

Free: 2 PDFs/day; Plus about $19.99/mo (price from independent review; maker lists Plus without a public dollar figure on the homepage). Prices change, so check the official site before you pay.