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Deskew crooked pages, remove black borders, punch holes, shadows, and noise from scanned PDFs — no AI, no uploads.
Clean up your scanned PDF
PDF files only · up to 100 MB
Clean up scanned PDFs online for free with PDFCrush. Deskew crooked pages, remove black borders, punch holes, scanner shadows, and noise — and make faded text readable again. No AI, no uploads: all processing happens locally in your browser.
Open the PDF Scan Cleanup tool in your browser. No installation or sign-up required.
Upload your scanned PDF by clicking the upload area or dragging and dropping the file.
Choose the Auto Cleanup preset, or enable individual operations: deskew, border removal, punch hole removal, noise reduction, contrast enhancement, and background whitening.
Check the live before/after comparison to see exactly how each page improves.
Click Clean PDF and download your cleaner, sharper, more readable document.
Automatically straightens crooked pages with projection-profile deskew
Removes black scanner borders, edge shadows, and punch holes
Whitens yellowed or gray paper backgrounds and removes lid shadows
Reduces speckles, dust marks, and compression noise while preserving text
Prepares scans for printing, sharing, archiving, or OCR processing
Private and secure — zero server uploads, no AI, no cloud processing
Straighten a crooked scan before sending it to a client
Remove black borders from a book or flatbed scan
Erase punch holes from scanned filing documents
Whiten the background of an old, yellowed document
Clean a noisy fax or low-quality photocopy
Prepare a scanned document for OCR or archiving
Your privacy is protected
PDFCrush processes everything directly in your browser using local image processing. Your scanned PDFs never leave your device — they are never uploaded, stored, or transmitted. No third-party services have access to your documents.
Upload your scanned PDF, choose the Auto Cleanup preset or pick individual operations like deskew, border removal, and noise reduction, preview the before/after comparison, then click Clean PDF and download the result. Everything runs locally in your browser.
Yes. The border removal feature automatically detects dark scanner borders, page-edge shadows, and cropping artifacts connected to the page edges and erases them without touching the document content.
Yes. The deskew feature analyzes each page's text alignment, detects the rotation angle, and automatically straightens the page. It works on skew angles up to about 10 degrees in either direction.
Yes. Enable the punch hole removal option and the tool detects round dark marks in the page margins — binder holes, filing holes, and punch marks — and erases them while leaving the document content untouched.
No. PDFCrush processes everything directly in your browser. Your scanned PDFs never leave your device — there are no uploads, no cloud processing, and no external APIs involved.
No. PDF Scan Cleanup uses classic, deterministic image-processing techniques — projection-profile deskew, flat-field background correction, median filtering, and connected-component analysis. No AI models, no cloud inference, and no data collection.
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