Compress Image to KB

Online application forms — for exams, job portals, visa and government services — often reject photos and scanned signatures above a fixed limit such as 20 KB, 50 KB or 100 KB. Guessing with a quality slider can take many attempts. This tool lets you type the limit and does the searching for you.

Always check the exact limit and any required dimensions on the form you are filling in, as requirements vary from one service to another.

The tool repeatedly encodes your image at different quality levels and measures the real size of each result, keeping the best-looking version that fits under your limit. If even the lowest reasonable quality is still too large, it gradually reduces the pixel dimensions and tries again.

Because the size is measured on the actual file you download, the result is guaranteed to be under the limit rather than estimated.

Crop the photo to just the face or signature before compressing — fewer pixels means more quality per kilobyte. Plain, evenly lit backgrounds compress far better than busy ones. Very small limits like 20 KB work well for passport-style photos and signatures but will look soft on large landscape photos.

Most online converters upload your file to a server, process it there and send it back. all in tool works differently: the processing code is downloaded to your browser and runs on your own device. Your file is read from your disk into memory, transformed, and handed back to you as a download. It is never sent over the network, so there is nothing for us — or anyone else — to store, read or leak.

You can confirm this yourself: once the page has loaded, you can disconnect from the internet and the tool keeps working. This also means speed depends on your device rather than your connection, which is usually much faster for large files.