Resize Image to KB Online
Choose a target like 20, 50, 100 or 200 KB and get a JPG that fits.
Choose the image to resize
Drag and drop here, or tap to choose. Your file stays on your device.
How to use the resize image to kb
Many forms only accept photos under a size limit, such as 50 KB or 100 KB. Choose the limit and the tool finds the best quality that fits, then shrinks the pixel size only if it has to. The result is a JPG at or just under your target. Everything happens in your browser, so your photo never leaves your device.
- Choose a photo (JPG, PNG or WebP) from your phone or computer.
- Pick 20, 50, 100 or 200 KB, or type any size in KB.
- Check the new size, dimensions and quality shown next to the preview.
- Press Download JPG.
When to use it
Online forms
Upload photos to job, university or government forms with a size limit.
Email and chat
Send a photo that fits attachment limits.
Websites
Keep product and blog images small so pages load fast.
Frequently asked questions
How does the tool reach an exact size?
It saves your photo as a JPG and tries different quality levels to find the highest quality that still fits your limit. If even low quality is too big, it also reduces the pixel size.
Will the result be exactly the size I chose?
It will be at or just under your target, never above it, because forms usually reject files over the limit.
Is 1 KB 1,000 or 1,024 bytes?
1,024 bytes, the way most upload forms count. A 50 KB target means at most 51,200 bytes.
Which formats can I use?
JPG, PNG and WebP photos. The result is always a JPG, the format most forms accept.
Is my photo uploaded?
No. The resizing happens in your browser and your photo never leaves your device.