Compress Image to 20 KB
Shrink a photo or signature to under 20 KB, right in your browser.
or browse filesdrop images here or paste · see all compressors
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Shrink a photo or signature to under 20 KB, right in your browser.
or browse filesdrop images here or paste · see all compressors
Open your picture and it is compressed to fit under 20 KB automatically. The tool searches for the highest quality that stays below the limit, and when 20 KB is too small for a large photo it also scales the dimensions down just enough. The size card shows the original size, the new size and the exact saving before you download, and the preview is the actually compressed image, so you see precisely what the form will receive.
A 20 KB cap almost always comes from an application form: exam portals, scholarship registrations, bank forms and government sites routinely demand a photo or signature under 10 to 20 KB. Compress the scan here, check that it is still legible in the preview, and upload the downloaded file. If your form asks for a different cap, the target box takes any number, and the presets jump straight to 50 KB, 100 KB and the other common limits.
Every common cap has its own page that opens ready to go: compress image to 30 KB, 50 KB, 100 KB, 1 MB or 2 MB. For a free quality slider and any custom target, use the main Compress Image tool. The full compressor collection shows every cap side by side.
At sizes this small the format matters. JPG and WebP compress photos and scanned signatures far better than PNG, which is lossless and often cannot reach 20 KB at all without heavy downscaling. That is why this page always saves as JPG by default, even when you upload a PNG; WebP and PNG remain one tap away on the download button.
Your photo or signature never leaves your device: compression happens entirely in your browser, with no upload, no queue and no account. For documents like ID photos and signatures that is not just faster, it is safer.
Open the image and the tool automatically finds the highest quality that fits under 20 KB, scaling the dimensions down when the photo is too large to fit otherwise. Check the preview and press download: what you save is exactly the size shown there, measured from the real encoded bytes.
A 20 KB JPG at modest dimensions, around 400 to 800 pixels, still looks fine for form uploads, ID photos and signatures. The preview shows the real compressed result, so you can judge it before downloading.
Yes, that is the main use of this page. Upload the scan or photo of your signature, and the tool compresses it under the cap while keeping it legible. Download and upload the file to your form.
No. The image is compressed entirely in your browser and saved straight back to your device. Nothing is transmitted to any server, which matters for sensitive documents like ID photos and signatures.