# Claude OCR vs FastOCR: reading scans and PDFs

## Short answer
Claude reads images and PDFs, and Anthropic's help page sets different limits for PDF text and PDF visuals. The page does not mention scanned documents or OCR. Choose Claude to analyse or question a document. Choose FastOCR to turn a scan into text, a searchable PDF, Word or Markdown, then hand the text to Claude if you want answers.

By the FastOCR team · Updated 4 November 2026 · Documentation checked 4 November 2026 · We make FastOCR. Accuracy figures come from our own test of each tool we scored, ours included, on the same scans; other facts link to each tool's own pages. [How we tested](https://fastocr.org/vs/claude#method)

Try it here: upload an image or scanned page at https://fastocr.org/image-to-text

## Verdict
**Pick FastOCR if:**
- You have a long scanned PDF and need a text layer on every page, not an answer about it.
- You want the scan back as a searchable PDF, or the words as Word or Markdown, to keep or send on.
- Your pages are in a script such as Urdu, Persian, Hindi or Arabic, and you want automatic language detection with output that copies in reading order.
- An agent or script has to call OCR itself, through a REST API, a Python SDK or an MCP server.

**Pick Claude if:**
- You want to question a document, compare two of them or have a chart explained.
- The document is a PDF of 100 pages or fewer, where Anthropic says Claude analyses text and visuals.
- You need to upload many large files in one chat.

## FastOCR and Claude side by side
| Factor | FastOCR | Claude |
| --- | --- | --- |
| What comes back | Raw text, Word (.docx) and Markdown. Every image upload also gets a one-page searchable PDF. | Not stated ([source](https://support.claude.com/en/articles/8241126-what-kinds-of-documents-can-i-upload-to-claude)) |
| Upload size | Page allowances by plan are on the pricing page. | 500 MB per file and up to 20 files per chat. ([source](https://support.claude.com/en/articles/8241126-what-kinds-of-documents-can-i-upload-to-claude)) |
| PDF length and what is analysed | Scanned PDF in, searchable PDF out; text copies in the right order, including right-to-left. | PDFs up to 1000 pages. Text and visuals are analysed for 100 pages or fewer; from 101 to 1000 pages, text only. ([source](https://support.claude.com/en/articles/8241126-what-kinds-of-documents-can-i-upload-to-claude)) |
| Scanned documents and OCR | Every image upload gets raw text and a single-page searchable PDF, plus Word and Markdown. | Not stated ([source](https://support.claude.com/en/articles/8241126-what-kinds-of-documents-can-i-upload-to-claude)) |
| Image uploads | Images: free, no sign-up, no watermark. PDFs: free account. | JPEG, PNG, GIF and WebP, up to 8000 by 8000 pixels. ([source](https://support.claude.com/en/articles/8241126-what-kinds-of-documents-can-i-upload-to-claude)) |
| Recognition languages | 100+ languages, detected automatically, including mixed pages. | Not stated ([source](https://support.claude.com/en/articles/8241126-what-kinds-of-documents-can-i-upload-to-claude)) |
| Free plan limits | Images: free, no sign-up, no watermark. PDFs: free account. | Not stated ([source](https://support.claude.com/en/articles/8241126-what-kinds-of-documents-can-i-upload-to-claude)) |
| Matched accuracy | No scored Claude head-to-head. | Not tested |

## Why FastOCR
- **Photos and screenshots.** Every image upload gets raw text and a single-page searchable PDF, plus Word and Markdown.
- **Scanned PDFs.** Scanned PDF in, searchable PDF out; text copies in the right order, including right-to-left.
- **Exports.** Raw text, Word (.docx) and Markdown.
- **Languages.** 100+ languages, detected automatically, including mixed pages. Share of characters wrong on our evidence scans (lower is better): Arabic 2.6%, Urdu 9.1%, Bengali 7.4%, Tamil 2.2%, Chinese 1.0%.
- **For developers.** REST API, Python SDK, MCP server for AI agents, LangChain and LlamaIndex loaders.

## Proof
Claude was not run on our evidence scans, so nothing here is a measured comparison. Claude's side comes from Anthropic's help page; the figure shows what FastOCR returns for an upload.

## How FastOCR works
Figure: what FastOCR gives back besides plain text, a searchable PDF whose copied Urdu text keeps reading order and bank statement rows in a spreadsheet. The statement rows are illustrations.

## Can Claude do OCR on a scan?
Claude accepts images and PDFs, and Anthropic's help page describes it analysing both text and visuals in PDFs. The page never says "OCR" or "scanned", so what happens with a page that is only a picture of text is not stated there. Treat a Claude reply as a reading of the page, and check it against the page for anything exact.

That matters most for records: an invoice number, a dosage, a clause. A transcript you will rely on needs a line-by-line comparison against the page whichever tool produced it, so choose the tool whose output you can keep, search and re-check.

## What changes for a long scanned PDF?
Anthropic sets two bands. A PDF of 100 pages or fewer gets text and visual analysis. From 101 to 1000 pages Claude processes text only and does not analyse visual elements, and PDFs over 1000 pages cannot be uploaded. A scanned page is a visual element, so a long scan sits right where the page leaves a gap. The help page does not say how scanned pages count in that second band.

FastOCR treats every page of a scanned PDF the same way. Sign in with a free account, upload it at [make a PDF searchable](https://fastocr.org/make-pdf-searchable) and download your scan with a text layer under each page. Scanned PDF in, searchable PDF out; text copies in the right order, including right-to-left.

## Give Claude text instead of pictures
Anthropic says Claude extracts text only from non-PDF documents. So a plain text or Markdown file is a format it handles directly. Run the scan through [image to text](https://fastocr.org/image-to-text), download Markdown or text, check it once, then upload that file to Claude for summaries, comparisons or questions.

You can keep the searchable PDF as the archive copy of the scan and upload only the checked text file wherever you need questions answered.

If the file must not leave your computer, the free [Mac](https://fastocr.org/mac) and [Windows](https://fastocr.org/windows) apps run offline and save text, Word, Markdown and a searchable PDF. They are public betas and use Apple Vision and Windows OCR, so none of the figures in this comparison describe them.

## OCR for agents and scripts
If an assistant or coding agent supports MCP, the FastOCR MCP server gives it an OCR tool for a local image or PDF, using a FastOCR API key. The [OCR API](https://fastocr.org/ocr-api) is the same service over HTTPS, with a Python SDK and LangChain and LlamaIndex loaders for retrieval work.

Anthropic's upload page is about chat uploads and says nothing about OCR, so there is no Claude-side feature here to compare it with.

## Choose Claude if
- You want analysis rather than a copy: explanations of charts, comparisons across documents, summaries.
- Your PDF is within 100 pages and its text is already selectable, so there is nothing to recognise.
- You upload many big files at once; Anthropic lists 500 MB per file and 20 files per chat.

## FAQ
### Can Claude read a scanned PDF?

Claude accepts PDFs, and Anthropic says it analyses text and visuals for PDFs of 100 pages or fewer. The page does not mention scanned documents or OCR, so how a scan is treated is not stated there. Check any result against the page.

### Does Claude make a searchable PDF?

Anthropic's upload page does not list a searchable PDF as an output. FastOCR returns your scan with an invisible text layer, so you can search and copy it, and right-to-left text copies in reading order.

### What is the PDF limit in Claude?

Anthropic lists 1000 pages as the maximum, 500 MB per file and 20 files per chat. Text and visuals are analysed for 100 pages or fewer; from 101 to 1000 pages Claude processes text only.

### Is FastOCR free to try on a scan?

Images are free with no sign-up or watermark. A scanned PDF needs a free account, and the current allowance is on the pricing page. Translation and AI Polish apply to a finished single image.

### Can I use Claude and FastOCR together?

Yes. Upload the scan to FastOCR, check the text against the page once, then give Claude the text or Markdown file. It works from words you have already checked instead of reading page images.

## Method
- Claude was not tested. Its facts come from Anthropic's help page on which documents can be uploaded, re-read on 4 November 2026. Anthropic may change it.
- A fact that page does not state is shown as Not stated, never as No. That covers output formats, scanned documents and recognition languages.
- No FastOCR figure is compared with a Claude figure, because none exists.

## Change log
- 1 November 2026: Published the earlier comparison.
- 4 November 2026: Moved to the comparison template and rewritten around Anthropic's PDF bands and long scans; help page re-read.

## Related comparisons
- [ChatGPT OCR vs FastOCR: a chat reply or a dedicated OCR tool?](https://fastocr.org/vs/chatgpt)
- [Gemini vs FastOCR](https://fastocr.org/vs/gemini)
- [Perplexity vs FastOCR](https://fastocr.org/vs/perplexity)
- [Can ChatGPT Do OCR? How It Reads Images and Scanned PDFs, and Its Limits](https://fastocr.org/blog/chatgpt-cant-do-ocr)
- [PDF OCR for LLMs](https://fastocr.org/pdf-ocr-for-llms)
- [Make a scanned PDF searchable](https://fastocr.org/make-pdf-searchable)