Need a photo or signature under 20 KB for an online form? This free tool compresses any JPEG, PNG, or WebP image down to 20 KB right in your browser. Upload your image and download a version small enough for strict upload limits — nothing is sent to a server.
20 KB is the limit many government and exam application portals (SSC, UPSC, railway, banking, university admissions) set for passport photos and signatures. It also suits forum avatars and tiny thumbnails. At this size, keep the image small in dimensions (e.g. a passport photo crop) so detail survives the compression.
Drag and drop or click to select a JPEG, PNG, or WebP image from your device.
The tool automatically compresses your image to 20 KB or less. No settings needed.
Use the starting-quality slider to push as close to the limit as possible for the best quality, then re-compress.
Click download to save the compressed image, ready to upload anywhere.
Crop the photo to the required dimensions first (often 3.5×4.5 cm for passport size), then upload it here. The tool compresses it to fit within 20 KB. If quality looks too low, the image dimensions are probably too large for 20 KB — crop tighter or use a plain background.
Yes. Scan or photograph your signature, crop out the white margins, and upload it. Signatures compress very well because they are mostly white space, so 20 KB keeps them crisp.
For small images like passport photos and signatures, 20 KB is usually enough to stay clear. For large, detailed photos, 20 KB will visibly soften the image — that is a limit of the file size, not the tool.
No. All compression happens locally in your browser. Your photo and signature never leave your device, which matters for documents you submit to official portals.