Compress Image to Exact KB
Reduce a photo's file size to an exact target — 20 KB, 50 KB, 100 KB or any limit an upload form demands — without changing its dimensions. Everything runs in your browser: your image is never uploaded anywhere.
Click to choose an image, or drag & drop
JPG or PNG · processed on your device, never uploaded
How to use
- 1Choose the image you want to shrink (JPG or PNG).
- 2Enter the maximum file size in KB that the upload form allows — for example 50.
- 3Click “Resize Image”. Dimensions stay unchanged; only the file size drops.
- 4Download the compressed JPG and upload it wherever you need.
Frequently Asked Questions
How do I compress a photo to exactly 50 KB?
Set the maximum size to 50 KB and click Compress. The tool automatically finds the highest JPEG quality that keeps the file at or under 50 KB, so you lose as little visual quality as possible.
Will compression change my image's dimensions?
Not by default on this page — “keep original dimensions” is enabled, so only the file size is reduced. Untick it if you also want to resize.
Is my image uploaded anywhere?
No. Compression runs entirely inside your browser; your image never leaves your device.
Why is the output a JPG?
JPEG offers adjustable compression, which is what makes hitting an exact file size possible. PNG input is converted to JPG automatically.