Auto-Crop Signature
Automatically detect your signature on a scanned page and crop tight to its bounds.
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Frequently Asked Questions
How to use Auto-Crop Signature
- 1
Select your file
Open Auto-Crop Signature and add your file — drag and drop it or click to browse. Your file is processed locally in your browser and is never uploaded to any server.
- 2
Process
Automatically detect your signature on a scanned page and crop tight to its bounding box.
- 3
Download the result
Preview the output and download it instantly — 100% free, no watermark and no sign-up required.
Why Crop Your Signature?
Exam portals often have strict size limits for signature images. Uploading a full A4 scan wastes space and may be rejected. This tool automatically detects the ink area and crops tightly so only the signature remains.
How does the padding slider work?
Padding adds extra whitespace around the detected signature bounds. A value of 0 crops right to the ink edge. A value of 10–20 gives breathing room, which some portals prefer.
Is my signature secure?
Yes. All processing happens entirely in your browser. Your image is never uploaded to any server.