Frequently asked questions
How do I compress an image to exactly 500 KB?
Drop it in — the 500 KB target is already set — and the tool binary-searches the highest quality that still fits, then hands you the file. No slider guesswork.
Is my image uploaded to a server?
No. Compression runs entirely in your browser; the image never leaves your device.
Which formats can I use?
JPG, PNG and WebP input. Output is JPG (works everywhere) or WebP (smaller).
Where the 500 KB limit shows up
The 500 KB target usually comes from high-quality web images, portfolio shots and any upload capped at half a megabyte. Set it above and download a file that lands just under the cap.
What to expect at 500 KB
At 500 KB compression is effectively invisible for a single photo. Use it when quality matters more than tiny size.
A quick tip
For a website you control, exporting to WebP fits even more quality into 500 KB — convert after compressing. For other targets, use the image compressor hub.
How compressing to 500 KB works
Drop your image into the box above — the 500 KB target is already set — and the tool runs a rapid binary search over quality levels, measuring the true output size at each step until it lands on the highest quality that still fits under 500 KB. You get a preview before downloading, so there are no surprises. If the image is very large for a tight target, it also gently reduces the pixel dimensions, because a slightly smaller but clean image always looks better than a full-size one riddled with compression artefacts.
Why an exact 500 KB target matters
Upload forms reject anything over their stated limit, so "roughly smaller" is not good enough — you need to land under 500 KB on the first attempt. Aiming for the exact size gives you the best-looking image that still passes, instead of over-compressing out of caution and ending up with something needlessly blurry.