Signature uploads made simple
Exam and government forms usually ask for a signature between 10 and 20 KB. Sign in black or dark blue ink on plain white paper, take a straight, well-lit photo, then set the size here.
Always check the exact size and dimensions in your form’s instructions.
Common sizes: 10 KB, 20 KB, 50 KB, 100 KB, 200 KB, 300 KB, 500 KB, 1 MB and 2 MB.
How it works
- Choose or drop a photo.
- Pick a size such as 20 KB, 50 KB or 100 KB, or type your own limit.
- The tool finds the highest quality that fits. Download it.
Frequently Asked Questions
My signature is under 10 KB. Is that a problem?
Some forms reject files below 10 KB. If yours comes out smaller, raise the quality slider, or make it larger first in the Image resizer.
How do I get an exact file size like 20 KB or 50 KB?
Pick the size, or type your own limit. The tool finds the highest quality that fits. If the photo is still too big at the lowest quality, it can reduce the dimensions for you.
Does it work on phones?
Yes. It works in modern mobile browsers, and iPhone HEIC photos open directly.