How to compress a PNG to 100KB
- 1
Drop your PNG into the box above, click to browse, or paste a screenshot with Ctrl+V.
- 2
The target is already set to 100KB. Change the number if your form or website asks for a different limit.
- 3
Check the new size and dimensions under the image, then download it, or download every image at once as a ZIP.
When do you need a 100KB PNG?
Upload forms, online shops, forums and profile pages often limit images to 100KB, and some accept only PNG, for example for signatures, logos or scanned documents with a transparent background. Converting to JPG would make the file smaller but lose the transparency.
This tool keeps the PNG format. It builds the smallest colour palette that still looks right and checks the size after every step, so you keep as much detail as possible under the limit. Screenshots, logos, icons and signatures usually fit without any visible change.
If your image is a photo and JPG is allowed, Compress JPEG to 100KB gives a sharper result at the same size.
Frequently asked questions
Does the image stay a PNG?
Yes. The result is a PNG, and transparent or semi-transparent areas stay exactly as they were.
How is a PNG made smaller without changing format?
First the number of colours is reduced, the way TinyPNG and pngquant work. If the file is still above 100KB, the image is also scaled down a little until it fits, and the new dimensions are shown under the image.
Will the file be exactly 100KB?
It will be at or just under 100KB, never over. A PNG that is already smaller than 100KB is left as it is.
My image is a photo. Should I use PNG?
Photos compress far better as JPG. If the site accepts JPG and you don't need transparency, use Compress JPEG to 100KB instead for a sharper result.
Are my images uploaded?
No. Compression runs entirely in your browser, and your images never leave your device.