ChatPDF is a dedicated SaaS launched in 2023 that lets you upload PDFs and have a chatbot answer questions about them. Files are stored in your account, you get a chat history per document, page-level citations, summary generation, and integrations like a Chrome extension and an API. The free tier caps you on PDF size, page count, questions per day, and documents stored; paid tiers unlock more.
TinyTools Chat with PDF is one of ~30 small browser-based utilities on TinyTools. It does one thing: you drop a PDF in, it indexes the text, you ask questions, you get answers with snippet citations. No login, no quota dashboard, no document library. When you close the tab, the document is gone. The page is <100 KB and works on a laptop, phone, or a locked-down work browser.
| Feature | TinyTools Chat with PDF | ChatPDF |
|---|---|---|
| Price (core feature) | Free, unlimited use | Free tier with daily caps; Plus ~$5/mo, Pro ~$15/mo |
| Account required | No signup, no email | Required to save chats / use most features |
| Page-level citations | Yes (snippet quoted back) | Yes (clickable, jumps to page) |
| Document history saved | No — cleared on tab close | Yes — persistent library |
| Max file size / pages | ~50 MB / ~500 pages typical | Free: 10 MB / 120 pp. Paid: 32 MB / 2000 pp. |
| Multiple PDFs per chat | One at a time | Yes (paid plans) |
| OCR for scanned PDFs | Basic, text-layer only | Built-in OCR |
| Mobile apps | Web only (mobile browser fine) | iOS and Android apps |
| API access | No | Yes (paid) |
| Chrome extension | No | Yes |
| Data retention | In-session only | Stored on their servers until you delete |
| Works offline / locally | No (LLM call required) | No |
ChatPDF's published pricing (as of mid-2026) is roughly: Free — 3 PDFs/day, 120 pages, 50 questions/day; Plus at ~$5/month — 50 PDFs/day, larger files, longer history; Pro at ~$15/month — 1000 PDFs/day, API access, priority. Annual billing knocks a meaningful chunk off. Check chatpdf.com/pricing before quoting these numbers in 2027 — pricing pages drift.
TinyTools is free at every level. There is no Plus, no Pro, no metered API. The trade-off is real: you don't get a saved document library, you don't get OCR for image-only scans, and you don't get an iOS app. If those matter, pay ChatPDF.
Be honest with yourself: if any of these describe you, ChatPDF is worth the subscription.
These are the cases where the free, no-signup tool genuinely wins — not by being "cheaper-with-asterisks," but by being structurally better suited:
30-page PDF, needs answers in five minutes, would never want this on a third-party server long-term. TinyTools — faster, more private, gone when the tab closes.
120 papers, queried over months, needs to come back to each. ChatPDF — the library and persistent chat history are exactly what this workflow needs.
Once, before signing. TinyTools — no reason to keep an account for one document.
Hundreds of image-based PDFs, monthly cadence. ChatPDF Pro — the OCR plus API access carries the whole workflow.
Could go either way. If you'll cite it later, ChatPDF. If you just need to understand it tonight, TinyTools.
This is one of the most-asked questions, and both sides deserve fair treatment. ChatPDF stores uploaded documents on their infrastructure (with deletion controls) and routes chats through an LLM provider; their privacy policy is the source of truth. TinyTools indexes your PDF in-session and discards it when you close the tab, but the actual chat call still goes to an LLM provider — meaning a copy of the relevant snippet briefly leaves your browser to be answered. Neither tool is appropriate for classified material or strict HIPAA workflows. If you need true zero-egress, run a local model with a local PDF reader; nothing web-based qualifies.
If you came here from a document-AI search, two adjacent free tools tend to be useful:
ChatPDF and TinyTools Chat with PDF aren't really competing for the same job — they're competing for the same Google search. ChatPDF is a product you commit to. TinyTools is a utility you use and forget about. If you tend to upload the same PDFs repeatedly, want OCR, or need mobile apps and an API, pay ChatPDF; it's good at what it does. If you mostly have this one PDF, right now, and the thought of yet another account makes you tired, try TinyTools Chat with PDF — it loads in under a second, costs nothing, and asks for nothing.
Try TinyTools Chat with PDF → Visit ChatPDF