Clean Up Scanned Documents
Turn photographed text into black and white using local lighting estimates.
Drop your image here
Drag and drop, or choose a file below
JPG · PNG · WEBP
Up to 250 MB · One image at a time
Each image: up to 16 megapixels and 8192 px per side
Use for dark writing on light paper. Large solid regions may turn white. This removes color and does not recognize text or repair missing letters.
Original
Choose an image or try the sample to see your preview here.
100% local processing
How to use
- 01
Choose an image or try the local sample.
- 02
Choose the neighborhood radius and brightness offset for the paper background.
- 03
Review the result and download the file.
Details and tips
How it works
A sliding local mean adapts the black-and-white threshold across the page. Pixels below the local mean minus the offset become black; alpha and dimensions are retained.
Made for everyday images
Prepare photographed receipts, handwritten notes and unevenly lit scans for PDF export.
Frequently asked questions
Are images uploaded?
No. Processing, previews and downloads stay on your device.
What are the limits?
JPG, PNG and WebP, up to 250 MB, 8192 pixels per side and 16 million pixels. Expanded output must also fit these limits. Animation uses one still frame.