Get your signature under 20 KB for an online application form. Add a photo or scan, and the tool crops it, makes the paper white and saves it below 20 KB at the size you choose. Your photo never leaves your device.
Your images never leave your device. No sign-up, no watermark.
How to make your signature 20 KB
- Sign on plain white paper with a dark pen and take a clear photo, or use a scan.
- Add the photo. “Under 20 KB” is already selected.
- Pick the pixel size your form asks for, such as 140 × 60. If the form also needs at least 10 KB, choose 10–20 KB.
- Download your signature and upload it to the form.
Why a form rejects a signature, and how to fix it
- File too large: keep “Under 20 KB” selected and save as JPG.
- File too small: choose 10–20 KB. The tool adds empty space inside the file to reach the minimum without changing the picture.
- Wrong size in pixels: choose 140 × 60, 300 × 120, or Other and type the width and height from the form.
- Wrong format: most forms want JPG. Choose PNG only if the form asks for it.
- Hard to read: keep “Make the paper white” on, and retake the photo in good light if the ink looks faint.
Questions
Will my signature still be clear at 20 KB?
Yes. A signature is mostly white paper with a few lines of ink, so at form sizes it usually takes only a few KB. 20 KB leaves plenty of room for a sharp image.
Is 20 KB the same as 20,000 bytes?
Here 1 KB means 1,024 bytes, as most forms and computers count it, so under 20 KB means at most 20,480 bytes. The exact size is shown under the preview before you download.
My form asks for a different size, like 50 KB. Can I use this?
Yes. Choose “Under 50 KB”, or Other to type any range. The main Signature Resizer has all the same options.
Can I also compress a photo to 20 KB?
Yes. Open the Image Compressor, choose “Exact file size” and pick 20 KB.
Is my signature uploaded?
No. Everything happens in your browser on your own device.
More tools: Signature Resizer, Image Compressor, Passport Photo Maker, Image Resizer.