Compress Image to 20 KB

How to use

1. Add one or more images with the button or by dragging them in.
2. Adjust quality, target size, width or format if you need to.
3. Press Compress, then download each file or all of them as a ZIP.

Frequently asked questions

When you need a file under 20 KB

Upload forms, email limits and page-speed budgets often come with a hard size cap. This page is preset to 20 KB: drop in a photo and the compressor searches for the highest quality that fits, shrinking dimensions only if quality alone is not enough. The result is the best-looking image that still passes the limit.

How big can a 20 KB image be?

File size depends on content as much as pixels. A plain background compresses far better than leaves or gravel. As a rough guide for a 4:3 photo at 20 KB:

These figures are estimates. The tool always reports the exact size of every file it produces.

Tips for hitting 20 KB cleanly

Crop to the subject first, so pixels are spent where they matter. Avoid re-compressing a file that has already been compressed, because artefacts stack. If a portal also lists a pixel range, set the maximum width to match it before compressing. Aim slightly below the limit, since some systems count 1 KB as 1000 bytes and others as 1024.

Guides

• Compressing Scanned Pages for Signature Uploads

  Scanned pages are often saved at very high resolution.

• How Image Compression Speeds Up Signature Uploads

  Speed is the most visible benefit of compression.

• Choosing Image Dimensions for Signature Uploads

  Dimensions decide how sharp an image looks and how heavy it is.

• Does Compression Affect Image Quality for Signature Uploads?

  Yes, but how much depends on your settings.

• Why Your Images Are Too Large for Signature Uploads

  If an upload keeps failing, the image is usually larger than it needs to be in more ways than one.

• How to Compress Images for Signature Uploads on Mac

  Mac users can compress JPEGs without opening Preview or Photoshop.