Enhance PDF Online

Enhance scanned PDFs with grayscale, black & white, and clarity filters for crisp, professional documents. Free and 100% private in your browser.

Your files never leave your device. Free, no sign-up, no watermark.

Enhance scanned PDFs online — free & private

Turn dull or uneven scans into crisp, professional documents with our free PDF enhancer. Apply grayscale, black & white, or enhanced clarity filters to sharpen text and clean up shadows across every page.

All processing happens on your device, so your scanned documents are never uploaded. It's the easy way to improve the readability and appearance of scanned contracts, notes, receipts, and forms.

Popular uses

• Clean up phone-camera document scans
• Improve contrast on faded or gray scans
• Convert color scans to sharp black & white
• Make scanned text easier to read and print

Also known as: improve scanned PDF, PDF clarity, clean up scanned document, PDF filter online, sharpen PDF scan.