Compress Image to Target KB
Many websites do not just ask for a photo, they ask for a photo under an exact size limit. Job portals, exam forms, visa applications, and government websites often demand an image below 50 KB, 100 KB, or 200 KB, and they reject anything bigger. Guessing a quality setting again and again until a normal compressor happens to land under the limit is slow and frustrating. This free tool does that trial and error for you: you type the target size in KB, and it automatically finds the settings that bring your image in under that limit.
The tool works by re-saving your image as a JPEG at many different quality levels, testing each result, and narrowing in on the highest quality that still fits under your target. If even the lowest quality is still too big, it gently reduces the image dimensions as well and tries again, so you get the best-looking picture that the size limit allows. Everything runs locally in your browser. Your photo is never uploaded to a server, which makes this safe for passport photos, ID scans, and other personal documents.
How to use
- Click the file box and choose the image you need to shrink.
- Type your target size in KB, for example 100 for a 100 KB limit.
- Press the Compress to Target Size button and wait a moment while it tests quality levels.
- Read the result: the new file size, the quality used, and whether dimensions were reduced.
- Check the preview, then click Download Image to save the finished JPEG.
Frequently asked questions
Will the result be exactly the target size?
Not exactly, and that is deliberate. The tool aims to land just under your limit, because a file even slightly over the limit gets rejected by strict forms. You will usually see a result a little below the number you typed, using the highest quality that fits.
Why is the output always JPEG?
JPEG quality can be adjusted smoothly, which makes it the only common format that can be tuned to hit a size target. PNG uses fixed lossless compression, so its size cannot be dialled up or down in the same way.
What happens if my target is very small?
For very small targets, the tool lowers quality first and then reduces the image dimensions. A tiny target on a huge photo can look soft, which is unavoidable: a strict size limit means giving up some detail.
Are my images uploaded anywhere?
No. The search for the right quality happens entirely on your device, in your browser. Your file never leaves your phone or computer.
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