Resize Signature to Any Size in KB
Resize a signature to any size in KB, free. It whitens the paper, trims the empty space and reduces a scanned or photographed signature to a small JPG. It runs in your browser, so nothing is uploaded.
How it works
- Choose your signature. It opens on your own device and is not sent anywhere.
- The tool finds the best JPG quality that stays under the limit on the slider, and only shrinks the pixel size if quality alone is not enough.
- If your form asks for exact pixels or a minimum size, open "More options". The signature is centred on white at that pixel size, never cut off.
Getting a clean signature
Sign with a dark pen on plain white paper and photograph it in daylight without strong shadows. The tool then whitens the paper and trims the empty space around the ink, so the strokes stay sharp even at a very small file size. Untick that option if you are resizing something other than a signature on paper.
Questions
Is my file uploaded to a server?
No. All the work happens inside your browser. The file never leaves your phone or computer.
What format is the result?
JPG (also written JPEG), which is what almost every application form accepts. PNG and WebP pictures are converted for you.
Will the signature look blurry?
The tool keeps the highest quality that fits under your limit. A very small limit on a large, detailed picture will lose some sharpness.
Does it work on a phone?
Yes. It works in the browser on Android and iPhone, with nothing to install.