Scan Cleanup · Browser Tool
Clean Document Scan
Upload a document photo or scanned image and clean it up for better readability and OCR accuracy. Adjust brightness and contrast, apply grayscale or black-and-white conversion, and sharpen the text. All processing runs locally in your browser — your file is never uploaded. Preview the result side-by-side with the original and download as PNG, JPG, or PDF.
Input formats
Output formats
Common uses
- Improve a dark or low-contrast document scan before uploading
- Remove yellow background from aged paper photos
- Convert a color document scan to crisp B&W
- Sharpen a slightly blurry document photo
- Prepare a scan for better OCR accuracy
Limitations
- Cannot deskew (straighten tilted) documents — use the Deskew tool for that.
- Cannot remove perspective distortion from angled photos.
- Auto-crop is not included — crop manually in the preview before export.
- Maximum image size: 30 MB.
Runs entirely in your browser
This tool processes your files locally using the Canvas API. Nothing is uploaded. Your files never leave your device.
Frequently asked questions
Yes. Increase the brightness slider to recover dark scans. Combine with a contrast boost to make the text crisper. The before/after preview shows the result before you download.
No. The Clean Scan tool runs entirely in your browser using the Canvas API. Your file never leaves your device.
Grayscale converts the image to shades of grey while preserving tonal variation. Black & white applies a threshold so each pixel becomes either pure black or pure white — good for clean printed text but can lose detail in photos or handwriting.