PDF Doctor
A full health check for any PDF — see exactly what's wrong, in plain English, and fix what can be fixed automatically.
Drop a PDF here for a free health check
or
Structure, fonts, images, page sizes, metadata, and security signals — one clear 0-100 score.
Your file is analyzed and then deleted — never stored, never shared. The scan itself is completely free, no account needed.
A PDF can have problems you'd never spot just by opening it - fonts that aren't embedded, images far larger than the page needs, a structure that technically works but is one bad viewer away from breaking. PDF Doctor reads the file's actual internal structure and turns what it finds into a plain 0-100 score and a list of issues in ordinary language, then fixes what can be safely fixed automatically, in one click.
How to use this tool
- Upload the PDF you want checked (drag-and-drop or browse) - the scan is free and needs no account.
- Read the score and the plain-English list of what's wrong, if anything.
- If something is fixable, sign in and click Fix Everything to download a repaired copy.
Frequently asked questions
What exactly does the score measure?
A fixed set of checks - structure, fonts, images, page sizes, metadata, and basic security signals - each with its own point deduction, so the same PDF always scores the same way. It's never a random or AI-guessed number.
Can it fix a password-protected PDF?
It can scan one once you type in the password, but Fix Everything won't touch a still-encrypted file - remove the password first with Unlock PDF, then run PDF Doctor again.
Is the health check itself really free?
Yes - scanning a PDF costs nothing and needs no account. Only downloading a repaired copy is charged, and your very first fix on this site is free.
What happens to my file after I scan it?
It's analyzed and then deleted immediately - an anonymous scan is never stored anywhere, even briefly.
How to use PDF Doctor
How to check and repair a PDF online (free health check) – step by step
A PDF can open fine and still hide problems: fonts that are not embedded, images far bigger than the page needs, mixed page sizes. PDF Doctor scans your file for free, gives it a health score from 0 to 100 and explains every problem in plain English. Problems that can be repaired automatically are fixed in one click.
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Drop a PDF for the free scan
Drag your PDF onto the upload box or press Browse for a file. The scan is free and needs no account. If the PDF has a password, a box asks for it.
Step 1: Drop a PDF for the free scan -
Read the score and the findings
The ring shows the health score. Below it, each finding is a card with an explanation - for example scanned pages, mixed page sizes or oversized images - and a note on whether it can be fixed here.
Step 2: Read the score and the findings -
Press Fix Everything
If something is fixable, the Fix Everything button appears. You can also tick the box to clear the file's metadata - author, creator and dates - at the same time.
Step 3: Press Fix Everything -
Download the repaired PDF
Compare the Before and After scores, then press Download. Anything that needs a judgement call, like rotating a page, is linked to its own tool.
Step 4: Download the repaired PDF
Quick tips
- Findings marked as fixable are repaired automatically; the others link to the tool that handles them.
- Scan again after you edit a file elsewhere to be sure you did not add a new problem.
- Clear the metadata when you share a file and do not want your name or software shown.
Common problems & fixes
- The PDF asks for a password
- Type it into the box that appears; it is only used to scan the file.
- There is no Fix button
- Your file is healthy, or its problems need another tool - follow the links shown with each finding.
- The fix did not change the score much
- Some findings, such as pages of different sizes, are fixed by Page Size Normalizer rather than here.
- The file is very large
- Try Compress PDF first, then scan again.
Frequently asked questions
How can I check if a PDF is damaged or has problems?
Upload it to PDF Doctor. The health score and the list of findings tell you what is wrong, in plain English.
Is the PDF scan really free?
Yes. Scanning is free and needs no account. You sign in only to download a repaired file.
What does the 0 to 100 score mean?
It comes from a fixed set of checks - structure, fonts, images, page sizes, metadata and basic security - so the same file always gets the same score.
Can it repair a corrupted PDF?
It repairs the file's internal structure and recompresses it where that is safe. A file that is badly broken may still need the original source.
Are my files stored?
No. The file is analysed and then deleted.