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Compress Image to 20KB

Shrink photos and signatures to under 20 KB for online application and exam forms.

100% Client-Side

Drop your photos or scans and get JPGs under 20 KB automatically, at the best quality that fits.

How to use the Compress Image to 20KB

  1. 1

    Drop one or more JPG, PNG, WebP or other images onto the upload area.

  2. 2

    Each image is compressed automatically: the highest JPEG quality that fits under 20 KB is chosen first.

  3. 3

    If quality alone isn't enough, the dimensions are reduced step by step until the file fits.

  4. 4

    Check the final size, pixel dimensions and before/after preview for each image.

  5. 5

    Download images one by one or all together as a ZIP.

Frequently asked questions

No. Everything runs in your browser on your own device, so ID photos, signatures and documents never leave your computer or phone.

Yes. The tool aims for under 20,000 bytes, which is below 20 KB whether a form counts 1 KB as 1000 or 1024 bytes. The exact final size is shown before you download.

Quality is lowered first. If even a modest quality can't reach 20 KB, the image is scaled down until it fits. You'll see a warning when it had to shrink to less than half its original width, so you can check it is still clear.

Usually, yes. Signatures and small ID photos compress well. Large, detailed phone photos may need to be scaled down a lot to fit, so cropping to just the face or signature first gives a sharper result.

Yes, if your browser can create WebP files you can switch the output format. Most application and exam portals only accept JPG, so JPG is the default.

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