What this tool does
Resize photo to 20 KB opens the resize photo to kb tool with this setting ready, so you only choose your file and tap once.
Online forms for exams, jobs, scholarships and government services almost always set a limit such as “photo between 20 KB and 50 KB”. A phone photo is usually 2 to 5 MB, a hundred times too big. This tool shrinks your photo to just under the size you choose. It first lowers the JPG quality step by step, and only makes the picture smaller in pixels if it has to. If the form also asks for a size in pixels, pick that too and the photo is fitted to it.
How to use it
- Choose your photo or drop it on the box.
- Tap the size the form asks for, or type any KB.
- If the form gives width and height, set them under Photo size.
- Check the new size and tap Download.
Why 123ToolBox
Popular ways to use it
Questions people ask
How do I reduce photo size to 20 KB?
Choose your photo, tap 20 KB and tap Resize. The tool gives you a JPG just under 20 KB.
Is my photo uploaded anywhere?
No. The photo is processed inside your browser and never leaves your device.
Why is the result a little under 20 KB, not exactly 20 KB?
Forms reject files even one byte over the limit, so we always stay just under it.
The form says 20 KB to 50 KB. Which should I pick?
Pick 50 KB for the clearest photo. Pick 20 KB only when the form says “maximum 20 KB”.
Can I resize a PNG or screenshot?
Yes. JPG, PNG and WEBP photos work. The result is saved as JPG, which most forms accept.
Does it work on mobile?
Yes. It works in Chrome on Android and Safari on iPhone.