Image Resizer Online
The general-purpose image resizer behind Toolzo's KB-target pages — resize or compress any photo to an exact KB (20KB, 50KB, 100KB or any number you type) directly in your browser.
Processed on your device — nothing is uploaded
What it does
- Same engine as Compress Image to KB — use whichever name you searched for.
- Works with JPG, PNG, HEIC and WebP input.
- Batch several photos to the same size in one go.
Private by design
Processing runs entirely inside your browser tab — your photo or document is never uploaded to a server.
Good to know
You can redo the same photo or file as many times as you like with different settings — each attempt starts from your original, so nothing gets permanently altered on your device either.
How it works
Frequently asked questions
Is this different from the 'Compress Image to KB' tool?
No, it's the same tool under a different, equally common search term.
Can I resize by pixel dimensions instead of KB?
For pixel-dimension resizing (not KB) use the Crop tool, which lets you set an exact width and height.
Reviewed by Manoj Pathak & Pallavi Yadav, Toolzo team — updated 23 September 2026.