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Compress Image to 20KB

Shrink a photo to 20KB or less in a few seconds. Many online forms reject images above a set size, and 20KB is a limit you meet often: exam forms and government portals often ask for photos and signatures of 20kb or less. The compressor runs entirely in your browser, tries different quality levels and, if needed, smaller dimensions, and stops at the best-looking result that fits under 20KB.

Runs in your browser Free, no sign-up Works on mobile
Drop your image here or browse JPG, PNG or WebP · you can also paste from clipboard

How to use the Compress Image to 20KB

  1. 1 Click the upload area or drop a JPG, PNG or WebP image onto it.
  2. 2 The tool compresses it automatically to 20KB or less, keeping as much quality as possible.
  3. 3 Compare the original and compressed size shown under the preview.
  4. 4 Press Download to save the compressed image, ready to upload to your form.

Features

Private by design

Your photo never leaves your device. Compression happens in the browser, so it is safe for ID photos and documents.

Smart quality search

The tool searches for the highest JPEG quality that fits under 20KB instead of using one fixed setting, so faces and text stay sharp.

Works on phones

Pick a photo straight from your gallery or camera on Android or iPhone and download the result.

When to use it

Exam registration

Competitive exam forms often need a photo between 10KB and 20KB and a signature under 20KB.

Signature scans

Signatures compress very well, so a clear scan easily fits under 20KB.

Old portals

Some older government sites still reject anything above 20KB; this gets you through.

Frequently asked questions

How do I compress an image to exactly 20KB?

Upload the image and the tool reduces it to 20KB or just under. Exactly 20KB is rarely possible, but anything below the limit is accepted by upload forms.

Will the image lose quality?

Some detail is lost when a large photo is squeezed to 20KB, but the tool keeps the highest quality that fits. Starting from a well-lit, in-focus photo gives the best result.

Are my photos uploaded anywhere?

No. The image is processed in your browser with JavaScript and is never sent to a server, so it stays private.

Which formats are supported?

JPG, JPEG, PNG and WebP. The result is saved as JPG, the format most forms accept.

Why does my 20KB photo look blurry?

20KB is a very small file, so the tool may also reduce the dimensions. Crop the photo to just your face and shoulders first; fewer pixels leave more room for detail.

Can I compress several images?

Yes, one after another. Each image is compressed separately in your browser, so you can do a photo, a signature and a scanned certificate in a row without waiting for uploads.

Does compressing remove location data?

Yes. Re-encoding the image drops most hidden metadata such as GPS location and camera details, which is a small bonus for privacy when you upload a photo to a public form.

Reviewed by ToolsUnlocked Team · Last updated

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