FitFileSize

Free · No sign-up

Compress a JPG to 20 KB

Signature uploads on application forms are often capped at 10 to 20 KB. A signature on a plain background compresses very well.

Drop your file here

or choose a file · PDF, JPG, PNG, WebP, TIFF or BMP

Your upload limit
  • Deleted automatically
  • Free, no watermark
  • Quality kept where possible

Getting a signature or small image under 20 KB

Application forms often want a scanned signature between 10 and 20 KB. A signature is dark ink on a plain background, which compresses very well once the image is a sensible size.

We shrink the pixel dimensions and JPEG quality together, down to 800 pixels on the longest side at the smallest setting, and keep the gentlest step that fits under 20,000 bytes.

Tips

  • Sign in dark ink on plain white paper, and crop tightly around the signature before uploading.
  • Take the photo in good light so the paper comes out white rather than gray. A clean background takes far fewer bytes.
  • If the form also asks for exact pixel dimensions, check them. We shrink to hit the file size, not to a specific width and height.

How it works

  1. 1

    Drop your file

    A PDF or an image. It goes over an encrypted connection and nowhere else.

  2. 2

    Pick your limit

    Choose the size the form asks for. We start with a cleanup that changes nothing you can see.

  3. 3

    Download it

    If it needs more, we find the gentlest quality setting that still fits, and delete everything soon after.

Questions

Is it free?

Yes. There is no sign-up and no watermark.

What happens to my file?

It is processed on our server and deleted automatically: the original 5 minutes after the run finishes, the compressed file after 10. A file you upload but never compress is deleted within 30 minutes. You can also delete everything right away with Delete now.

Will it look worse?

We try a lossless cleanup first, which does not change how the file looks. Only if that is not enough do we lower image quality, and we pick the gentlest setting that still fits your size.

What if my file cannot get that small?

You get the smallest version we could make and a clear note saying so, instead of a file that silently misses the limit.

Why does the size page aim a little under its limit?

Some sites count a kilobyte as 1000 bytes and others as 1024. We aim under the stricter one, so a 200 KB page aims for 200,000 bytes and the file passes either way.

Common size limits