Can Claude read pdfs?
Yes. Claude reads PDFs on both free and paid plans at claude.ai and through the API. You upload the file and ask questions, and current models read both the text and the images, charts, and tables inside the PDF. Very long documents fit because current models support up to a 1M-token context window.
Why — the first-principles explanation
A PDF is really two things bundled together: a text layer (selectable words) and a visual layer (how the page looks, including scanned images, charts, and diagrams). To 'read' a PDF well, an AI has to handle both. Older text-only systems could only grab the words and would miss anything drawn as a picture.
Current Claude models are multimodal, meaning they accept both text and images as input. When you upload a PDF, Claude pulls out the text and also looks at each page as an image. That is why it can answer questions about a bar chart, a signature, or a scanned receipt that has no selectable text at all.
The second limit is size. Everything Claude reads at once has to fit inside its context window, measured in tokens (a token is roughly three-quarters of a word). Current top models (Fable 5, Opus 4.8, Sonnet 5) hold up to 1 million tokens, which is hundreds of pages, so long contracts or reports usually fit in a single pass. If a document is bigger than the window, it has to be split into chunks. In the API, PDF uploads also have per-file caps (commonly around 100 pages and 32 MB per file), while the chat app handles the splitting for you.
An example that makes it click
Imagine handing a research assistant a 200-page printed report. A slow assistant only reads the words and ignores every graph. A better assistant reads the words and studies the pictures, so when you ask 'what does the chart on page 40 show?' they can actually tell you. Claude is the second kind. And because its 'desk' is huge, roughly a million tokens, it can spread the whole report out at once instead of reading ten pages, forgetting them, and reading ten more.
How to do it
- Open a chat at claude.ai and click the paperclip or upload button.
- Select your PDF (or drag it into the message box).
- Type what you want, such as 'Summarize this in five bullet points' or 'What are the payment terms on page 12?'
- Ask follow-up questions; Claude keeps the document in context for the conversation.
- For very large or many files at once, consider a paid plan or the API, which handle bigger workloads.
Key facts
- All current Claude models accept both text and image input, so they read charts and scanned pages inside PDFs, not just selectable text.
- Current top models (Fable 5, Opus 4.8, Sonnet 5) support up to a 1M-token context window, enough for hundreds of pages at once.
- File uploads are available on the Free plan per Claude's pricing page.
- In the API, PDF processing has per-file limits (commonly about 100 pages and 32 MB).
- Claude Haiku 4.5 has a smaller 200K-token context window, so very large PDFs are better suited to the larger models.
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Affiliate link — we may earn a commission at no cost to you.▶ The 60-second explainer (script)
Yes, Claude can read PDFs. Just upload the file at claude.ai and ask your question. Here's what makes it good at this. Current Claude models are multimodal, so they don't only grab the words in a PDF, they also look at each page as an image. That means Claude can read charts, tables, signatures, even scanned documents that have no selectable text. The other big deal is size. Claude's top models can hold up to a million tokens at once, which is hundreds of pages, so you can drop in a whole contract or report and ask about page one and page two hundred in the same conversation. Upload, ask, and follow up. That's it.
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People also ask
Can Claude read scanned PDFs with no selectable text?
Yes. Because current models read each page as an image, they can interpret scanned documents and pictures, not just typed text.
How large a PDF can Claude handle?
Top models hold up to 1M tokens, roughly hundreds of pages. In the API, single PDFs are typically capped around 100 pages and 32 MB.
Do I need Claude Pro to upload a PDF?
No. File uploads are available on the Free plan, though paid plans give you more usage for large or frequent document work.
Can Claude pull data from tables in a PDF?
Yes. You can ask Claude to extract table values, summarize sections, or convert content into a list or spreadsheet-style output.