AskYourPDF is a capable upload-and-chat tool with a big following, but it isn't the only way to question your documents — and depending on how you work, it may not be the best. If you'd rather not upload every file, want answers you can click to verify, or work with documents that live in a wiki or the browser, it's worth seeing the options. This is an honest roundup of the best AskYourPDF alternatives, what each does well, and where it falls short.
We'll credit AskYourPDF first, then compare four alternatives — Sidenote, ChatPDF, NotebookLM, and Humata — with a side-by-side table.
What AskYourPDF does well (and where it leaves gaps)
AskYourPDF lets you upload a PDF (or a library of them) and chat with it, with references back to the source, plus integrations like a ChatGPT plugin and an API for developers. It's a solid pick if you want upload-first Q&A and don't mind bringing your files to it.
The gaps are the familiar ones for upload-first tools. You bring documents to AskYourPDF rather than reading them where they live, so it won't help with a Confluence page, a Notion doc, or a live web article. And while it references sources, it doesn't scroll you to and highlight the exact sentence behind a claim the way a citation-first reader does.
The best AskYourPDF alternatives at a glance
| Tool | Best for | Reads in-browser (no upload) | Citation style | Pricing model |
|---|---|---|---|---|
| Sidenote | Reading any doc or page in-browser with verifiable citations | Yes — PDFs, Confluence, Notion, SharePoint, Google Docs, web | Click-to-scroll to the exact passage | Free tier; Pro from £10/mo, 7-day trial |
| ChatPDF | Quick Q&A on a single PDF | No — upload a PDF | Page references | Free tier; paid plans |
| NotebookLM | Synthesising uploaded sources, audio overviews | No — upload to a notebook | Source-level | Free (Google) |
| Humata | Q&A across a library of uploaded files | No — upload files | Source references | Free tier; paid plans |
Features and pricing change often — check each tool's current plans before committing.
Sidenote — best for cited, in-browser reading
Sidenote reads the document where it already lives and ties every answer to the exact source passage. It summarises, explains, and chats with whatever you have open — a PDF (including scanned ones, via OCR), a Confluence or Notion page, a SharePoint or OneDrive file (read-only via Microsoft Graph), a Google Doc, an arXiv paper, or any web page — with no upload step.
Pros: reads in place with no upload; click-to-verify citations that scroll to and highlight the exact sentence; drops unsupported claims server-side; Collections for questioning several documents at once; free tier plus a 7-day Pro trial, no card.
Cons: it's a reading and citation layer, so there's no audio-overview feature like NotebookLM's and no developer API-style plugin like AskYourPDF's; the richest experience is the browser extension rather than a mobile app.
ChatPDF — best for a quick single-PDF Q&A
ChatPDF keeps it simple: upload a PDF and ask about it. Pros: fast and low-friction; page references help you locate answers. Cons: upload-first and PDF-only, so it won't help with a wiki page, a Notion doc, or a live article. See our ChatPDF alternatives roundup.
NotebookLM — best for audio overviews and free synthesis
Google's NotebookLM turns a set of uploaded sources into summaries and listenable audio overviews. Pros: free, strong cross-source synthesis, excellent audio overviews. Cons: upload-first, doesn't read pages in the browser, source and size limits per notebook, and citations don't jump to the exact passage.
Humata — best for querying a file library
Humata focuses on Q&A across a library of uploaded documents. Pros: handles multiple files, useful for repeated questions over the same set. Cons: upload-first, and it doesn't read documents where they already live or scroll you to the precise sentence. See our Humata alternatives roundup.
How to choose
Work back from your habit. If you keep a library of files and query it repeatedly, AskYourPDF or Humata fit. If you gather sources and like listening, NotebookLM is hard to beat for the price. If you mostly read one document at a time — especially documents in Confluence, Notion, SharePoint, or the open web — an in-browser reader removes the upload step. And if your priority is trust, choose on citation quality: can you click a claim and land on the sentence behind it?
Frequently asked questions
Is there a free AskYourPDF alternative?
Yes — several. Sidenote has a free tier plus a 7-day Pro trial with no card, ChatPDF and Humata offer free tiers with paid upgrades, and NotebookLM is free from Google. The right one depends on whether you want in-browser reading with click-to-verify citations, or upload-first Q&A on a file.
What's the main difference between Sidenote and AskYourPDF?
Workflow and verification. AskYourPDF is upload-first — you bring files to it. Sidenote reads the document where it already lives — a web page, Confluence, Notion, a PDF — without uploading, and every answer cites the exact passage so you can click to scroll to and highlight the source. It also drops claims it can't ground in the text.
Which AskYourPDF alternative is best for verifying sources?
Choose a tool that ties each claim to the specific sentence behind it and lets you jump straight to it. Sidenote is built around click-to-scroll citations and server-side checks that remove unsupported claims, which makes verifying an answer a one-click job.