PDF to Markdown for Claude
Prepare your PDF for Claude: clean Markdown, redacted personal data and a token count. All on your device.
- No sign-up
- Free, no watermark
- Nothing leaves your device
About this tool
Claude answers better with well-structured text: headings, lists and paragraphs, without repeated headers or stray page numbers. We turn your PDF into Markdown with that structure and estimate the tokens so you know whether it fits in one conversation.
Before you paste anything into Claude, personal data is replaced with consistent placeholders ([NOMBRE_1], [DOCUMENTO_1]…): the same value always gets the same placeholder, so the model understands the document without knowing the people.
What Claude says about the files you upload
Quoted from its own pages, without summarising what they do not say. Policies change: open the source before you decide.
| What | What it says | Source |
|---|---|---|
| File limitsFiles in a chat | «500MB per file» | support.claude.com |
| File limitspersonal accounts | «Up to 20 files per chat» | support.claude.com |
| File limitspersonal accounts | «Number of pages: PDFs are limited to 1000 pages» | support.claude.com |
| Training on your datapersonal accounts | «You choose to allow us to use your chats and coding sessions to improve Claude» | privacy.claude.com |
| How to turn it offpersonal accounts | «Your Incognito chats are not used to improve Claude, even if you have enabled Model Improvement in your Privacy Settings» | privacy.claude.com |
| Retentionpersonal accounts | «Deleted from our back-end storage systems within 30 days» | privacy.claude.com |
| RetentionOnly if you turned on Model Improvement | «we may retain your data in a de-identified format for up to 5 years in our model training pipelines» | privacy.claude.com |
| Human reviewpersonal accounts | «We automatically de-link your data from your user ID (like your email address) before any review» | support.claude.com |
| Human reviewpersonal accounts | «Access is limited to a small number of personnel involved in model training» | support.claude.com |
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When you do not need Sırdaş
If the document holds nobody's data and Claude accepts the PDF, upload it directly: it is faster. Sırdaş is for PDFs with names, ID numbers or accounts, or when you do not want the whole file to leave your machine.
How it works
- 01
Drop the PDF.
- 02
Review the Markdown and the highlighted data.
- 03
Copy (or download the .md) and paste it into Claude.