SentryPDFClean up scanned PDF pages locally in your browser before OCR
How it works
Processing for this tool
This tool runs in your browser on this device. For the core operation, the file does not leave the browser.
When this mode can do the job well, it is the best option for sensitive or confidential documents.
Drop a scanned PDF here
This workflow is strongest on scanned or image-only PDFs. Up to 100 MB.
Choose PDFUse this before OCR, not instead of OCR
OCR Cleanup PDF does not create a searchable text layer. Use OCR PDF afterward if you need searchable output.
First-page preview
The preview shows the first page only. Review the full export carefully, especially in black-and-white mode.
Upload a PDF to see a local before/after preview of the first page.
How it works
Cleanup mode
Refine cleanup
Honest limits
This workflow does not perform OCR, deskew, perspective correction, or shadow removal. It is a dependable cleanup-first pass for scanned PDFs, not a full scan-restoration suite.
The export rebuilds each page as an image-based page. Existing selectable text, links, forms, and annotations may no longer remain selectable or interactive afterward.