Compress Image to 20KB, 50KB or Any Size

Application portals often set tight upload limits so their servers can handle millions of submissions. Limits of 20KB, 50KB or 100KB are common for photographs and signatures on Indian exam forms, and the upload is simply rejected if the file is even slightly over. That is why hitting an exact size matters more here than general-purpose compression.

Usually yes, for a passport-style headshot. The tool reduces quality first and only reduces dimensions when the target cannot be reached otherwise, so it keeps as much detail as the size allows. A large landscape photo squeezed to 20KB will visibly soften, but a cropped face photo at typical form dimensions generally stays acceptable.

No. The image is read into your browser, resized and re-encoded on your own device, and the download comes from memory. Nothing is transmitted, which means nothing is stored, logged or retained. You can disconnect from the internet after the page loads and the tool still works.

Resizing changes the pixel dimensions; compressing changes how much data is used to describe those pixels. Compression alone can shrink a file a long way before quality suffers noticeably. Only when a target is very small relative to the original does reducing dimensions become necessary, and this tool does that automatically and only as a last resort.

JPG for photographs, which is what most forms require. PNG preserves sharp edges and transparency, which suits signatures and screenshots, but produces much larger files for photos and often cannot reach very small targets. WebP compresses best of all but is not accepted by many government portals, so check before using it.

Image encoders only accept a quality setting, not a target size, so the tool searches for the highest quality that still fits under your limit. The result lands just below the target rather than exactly on it, which is what you want — a file marginally over the limit would be rejected.