Free tool

Compress image to 20 KB for the strictest upload forms.

Drop a photo or signature, keep the 20 KB target, download a file that passes the portal's check.

Compress image to 20 KB at a glance

content.win compresses images to an exact size in KB, with no daily cap, which most free compressors only offer behind an account. It never returns a file larger than the one you gave it.

Works with
JPG, PNG and WebP. Several at once.
Comes back as
The same format, smaller, at an exact target size in KB or at a quality you pick.
Runs
In your browser.
Limits
No daily limit and no cap on how many files. Images up to 24 megapixels.
Price
Free. No account, no watermark.

How to compress an image to 20 KB

  1. Drop the images in. JPG, PNG or WebP, one or several.
  2. The target is already set to 20 KB. Change the number if the form says something else.
  3. Download. Each file lands at or under the target.

Getting under 20 KB

Size first
20 KB is small. A photo at 300 by 400 pixels, the size most portals ask for, fits as a JPG and still looks clean. Resize or crop before compressing and the result is far better.
Signatures
A signature at 300 by 100 pixels on white paper is well under 20 KB as a JPG.
Format
JPG gives the smallest file for a photo. A PNG only wins for flat black-on-white marks.

Questions people ask

Can a photo really fit in 20 KB?

Yes at the pixel sizes forms ask for, usually 200 to 400 pixels wide. A full-size phone photo should be resized or cropped first.

Why does the result look soft?

Because the picture is still large in pixels. Resize it to the form's dimensions and compress again.

Can I change the target?

Yes, to any number from 5 KB up.

Does it work on a phone?

Yes. Open the page, pick the photo from the gallery, download.