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Resize Signature to 20KB
Upload your signature, keep 20 KB and 140 × 60 px (or type your form's size) and download a clean JPG.
Advanced (optional): exact pixels or minimum KB
Many forms ask for pixels as well as KB. Leave empty if yours does not. Examples are common sizes only – always use the size your form states.
✅ Done! Your images are ready
About this tool
Application forms usually want a signature that is both small in KB and fixed in pixels. This page sets both at once: the file stays under 20KB and the picture is cut to the exact width and height you type. 140 × 60 is only a common example, so replace it with the size your form asks for.
How to use the 20KB signature image tool
- Select your image. JPG, PNG, WebP and iPhone HEIC all work, and you can pick several at once.
- Check the size. The box is already set to 20. Change the number if your form says something different.
- Press the green button and download a JPG under 20 KB, or one ZIP for many files.
Compress mode keeps the best quality that still fits under your limit.
Where this helps
Job and exam forms
Signature fields often list a size in KB and in pixels. Fill both boxes and the result matches.
Bank and KYC forms
Digital onboarding forms reject signatures that are too big or the wrong shape.
University admission
Admission portals ask for a signature image next to the photo.
Scholarship applications
Small, clean signatures upload quickly even on weak mobile data.
What to expect
Signatures are mostly white with thin dark strokes, so they fit 20KB easily when cropped tightly. Use dark ink on plain white paper and good light; shadows make files bigger and strokes grey. The default 'Crop to fit' keeps the ink undistorted; choose 'Stretch' only if your form demands it.
Frequently asked questions
How do I resize a signature to 140 x 60 pixels and 20KB?
Select the photo, keep 140 and 60 in the pixel boxes and 20 in the KB box, then press the green button. The tool crops to the exact shape first and then fits the file under 20KB.
My form says 10KB to 20KB. What do I do?
Open Advanced options, type 10 as the minimum KB and keep 20 as the maximum. If the result is below 10KB it is padded up to 10KB.
Why does my signature look grey after compressing?
Usually the paper was shadowed or the pen was light. Re-take the photo in bright, even light with a dark pen on white paper, then compress again.
Is my photo uploaded anywhere?
No. Everything happens inside your browser, so your picture never leaves your device. No signup, no watermark.
Other sizes and tools
Compress image to a smaller size
Increase image size to a larger size
Signature, passport photo, formats and more
Prefer a percentage instead of a KB size? Use the quality-based image compressor, or read our image guides.