Reduce Image Size in KB, to Any Number You Need
Portals rarely ask for a round number: one form wants 47 KB, another 120 KB. Type your exact KB target here and the compressor opens with it pre-filled, then searches encoder quality on your device until the file lands on your number.
File-size rules are the most common silent rejection in online forms. Exam portals, visa uploads, job applications and government services publish hard KB ceilings, and an overshoot of even a few kilobytes bounces without a readable error message.
Guessing with quality sliders wastes time because the mapping from quality to final bytes is nonlinear. This preset removes the guesswork: the tool runs a measured search over encoder quality on your own device and reports the achieved size before you download.
Because everything runs client-side, sensitive scans of documents, signatures and ID photos never touch a server. There is no queue, no daily cap and no watermark on the output.
Can I reduce to an odd number like 47 KB?
Will the picture still be usable at small KB values?
Does this work on phones?
How it works
- Enter your KB target above and open the tool | the preset is pre-filled.
- Add the photo or scan | previews update live.
- Run the compressor and read the achieved size in the result card.
- Download | the file measures your target in KB.