Compress image to 20KB online

How to compress an image to 20KB

1. Choose a JPG, PNG, or WebP image.
2. Keep the target size set to 20KB.
3. Start with a smaller max width if the image is a large photo.
4. Compress the image and check the final file size.
5. If it is still above 20KB, reduce max width or quality and try again.
6. Check readability before uploading, especially for signatures or text-heavy images.

For strict upload portals, compare the final image against the official file size, dimensions, format, and readability requirements before submitting.

What this 20KB compressor is for

This page is for strict upload limits where a small image needs to fit close to or under 20KB. It can help with signatures, icons, small profile images, school or job forms, service portals, and document systems that reject larger files.

If you need a general-purpose compressor with more visual quality, start with the image compressor or use the larger compress image under 100KB page.

How to get closer to the 20KB limit

Resize very large photos before expecting a 20KB result. Reduce max width aggressively for profile photos, icons, and small form images, then lower quality gradually instead of jumping straight to the lowest setting.

JPG usually works better for photos because it can produce smaller outputs. PNG may stay larger for detailed screenshots or transparent graphics, and signatures or text-heavy images need a readability check after compression.

What if the image is still above 20KB?

• Reduce max width, for example from 1600px to 1000px, 800px, 600px, or lower if the form allows it.
• Lower quality step by step and compare the downloaded file size.
• Use the image resizer first if the image dimensions are large.
• Use compress image under 100KB or compress image under 200KB if the upload portal allows a larger file.
• Check official upload rules before submitting because some forms also specify dimensions, format, or photo type.

Common 20KB upload uses

A 20KB image limit is most useful for small form uploads, signature images, icons, small profile images, document portals with strict file-size rules, and school, job, service, or account forms. If your form also requires exact dimensions, use the resize image for online form tool first. For passport-style photos, use the passport photo resizer and then compress only if the official instructions allow it.