Compress an image to 20 KB
“Compress image to 20 KB” is one of the most common requirements on Indian government and exam portals: it’s the upper limit for SSC signature uploads (10–20 KB) and the lower bound of many photo bands, like SSC’s 20–50 KB photo and UPSC’s 20–200 KB photo. If a form sent you here, the preset is already set — drop your file and download the result.
Your image is processed entirely on your own device. There’s no upload step at all, which matters when the image in question is your signature or your face.
Drop images here — or click to browse, or paste with Ctrl+V
JPG · PNG · WebP — processed on your device, never uploaded
How it works
- Open this page — the compressor is already set for “Compress image to 20 KB”.
- Drop your image into the box, click to browse, or paste it with Ctrl+V.
- The tool re-encodes the image on your own device until it fits the target — nothing is uploaded.
- Check the preview and file size on the result card, then download.
What to expect at 20 KB
Signatures: perfect. 20 KB is generous for a cropped signature scan.
Passport-style photos: good at around 400–500 px on the long side — which is roughly what these portals want anyway (a 3.5 × 4.5 cm photo at 300 DPI is about 413 × 531 px). At those dimensions, 20 KB keeps a face recognizably sharp with mild smoothing in flat areas.
Large photos: a 4000-px phone photo cannot stay at full dimensions and reach 20 KB with acceptable quality. The tool will scale it down as needed; that is the correct behaviour for the forms that ask for this size.
Getting the dimensions right
Uploading to an exam form? Use the dedicated presets — they pair the KB target with the exact pixel dimensions the portal expects: SSC photo & signature, or the portal table in our requirements guide.
Frequently asked questions
My photo is 5 MB. Can it really become 20 KB?
Yes — but not at its original dimensions. The tool first lowers JPEG quality; if that alone can’t reach 20 KB cleanly, it reduces the pixel dimensions step by step until it fits. For form uploads that’s exactly what you want, because those forms also expect small dimensions.
Which format should I choose for a 20 KB target?
JPG, almost always. Government and exam portals overwhelmingly require JPG/JPEG, and JPEG is also the most efficient of the widely-accepted formats at these sizes. Use WebP only if you know the destination accepts it.
The result is 19.7 KB — will the portal see it as under 20 KB?
Yes. 20 KB is 20,480 bytes and portals compare the actual byte size. This tool targets the real byte limit, not an approximation, so a file it reports as under target is genuinely under it.