Docket № I14 · Optimize
Compress an Image to an Exact Size in KB
Hit an exact file size — 20 KB, 50 KB, 100 KB — for any upload limit.
Drop files here, or click to browse
JPG, PNG or WEBP — one or manyProcessed entirely in your browser — nothing is uploaded
Upload portals love strict limits: “maximum 50 KB”, “between 10 and 20 KB”. Type the size you need and the tool finds the best quality that fits under it, only shrinking the dimensions if it truly has to.
It works on batches too, and every image is processed on your own device.
How to compress an Image to an Exact Size in KB
- Add one or more images.
- Enter the maximum size in KB (and an optional max width).
- Download images that fit the limit.
Stays on your device
Every file is processed inside your browser. Nothing is uploaded, so your documents never touch a server.
No sign-up, no watermark
No account, no daily cap and nothing stamped on your file. Open the tool and get your result.
Works without internet
Once this page has loaded you can switch off Wi-Fi and the tool keeps working — proof nothing leaves your device.
Frequently asked questions
How does it hit the exact size?
It tests JPEG quality levels with a binary search and keeps the highest quality that stays under your limit. If even the lowest quality is too big, it gently reduces the pixel size.
Why is my result a JPG?
JPEG gives the most control over file size, which is why almost every form asks for it.