Signature Resizer
Resize your signature image to exact dimensions and optional file size (KB). Upload your signature, adjust width, height, or set a target KB, and download. No uploads to servers — everything stays private on your device.
Click to upload or drag & drop your signature image
Supports JPG, PNG, WebP, GIF
Why resize your signature?
Signatures often need to fit specific dimensions when uploading to forms, documents, or official portals. This tool lets you quickly adjust your signature image to the required size without any image editing software.
- Exact pixel dimensions – set width and height precisely.
- Aspect ratio lock – keep the signature from distorting.
- Presets – common sizes at a click.
- Custom file size (KB) – compress to a target size in kilobytes for strict upload limits.
- Privacy guaranteed – signature never leaves your device.
How to resize and set KB (step-by-step)
1. Upload signature
Click or drag your signature image.
2. Adjust dimensions
Enter width/height or use a preset.
3. (Optional) Set target KB
Enter desired KB and click "Resize to KB" to optimize file size.
4. Download
Save the final signature image.
Common use cases
- Online forms – upload signatures with exact pixel and KB requirements.
- Digital documents – embed signatures into PDFs or Word files.
- Email signatures – ensure consistent sizing across clients.
- Government portals – meet strict image dimension and file size specifications.
- E-signature platforms – prepare signature images before uploading.
Frequently asked questions
Yes, 100% free. No hidden charges, watermarks, or limitations.
Enter the desired KB value in the "Target file size (KB)" field and click "Resize to KB". The tool will adjust JPEG quality to match that size as closely as possible while maintaining your chosen dimensions.
Never. Resizing happens entirely in your browser using JavaScript. Your signature is never uploaded or stored anywhere.
Currently, this tool processes one signature at a time. For batch processing, try our Image Resizer tool.