Compress image to 50 KB

The 50 KB limit is a fixture of national exam and recruitment portals — civil-service applications, university entrance forms, banking and competitive-exam registrations. These systems store millions of applicant photos and signatures, so they cap each one hard to keep their databases manageable.

The instructions usually spell out a passport-style photo between 20 and 50 KB and a signature between 10 and 20 KB, often with fixed pixel dimensions as well. Miss the size and the form throws an error at the final step, after you have already filled in everything else — which is why getting the photo right first saves the most time.

A phone photo starts several megabytes above the target, so reaching 50 KB means cutting both dimensions and quality. Crop to the required frame first — head and shoulders for a photo, the ink strokes only for a signature — then let the tool lower quality until the file clears 50 KB. Signatures compress to a few kilobytes because they are mostly white, so they are rarely the problem.

Photos are tighter: at the small pixel sizes these forms expect, 50 KB still keeps a face clearly recognisable, which is all the reviewer needs. If your portal also lists a minimum size, nudge the target up so you sit inside the stated range rather than under it.

Exam and job applications carry real personal data — your face, your signature, sometimes an ID card in the same batch. Here the compression runs entirely in your browser, so none of that is sent to a server or stored anywhere; the file is processed on your machine and handed back for download. You can prepare the photo and the signature one after another without creating an account, and nothing lingers once you close the tab.

Most exam portals ask specifically for a JPEG, since it is the format their systems are built to read; a PNG of the same photo is usually larger and sometimes rejected outright. Keep the photo in full colour — a greyscale shot can look like a scan and occasionally fails a manual check — and use a plain, light background, which meets the usual guidelines and compresses more easily because there is less detail to encode.

Save your original at full resolution as well. If the portal later asks for a print-quality copy, or you need the same photo for a physical form, you will have it without re-shooting.