Compress an image to 140 KB
140 KB is another of those just-under-the-round-number caps that portals like to set. The tool below is set to 140 KB and finds the quality that hits it.
Drop images here or click to upload
PNG, JPG, WebP, GIF, AVIF, HEIC — up to 50MB each
Output lands at or under your target. JPEG and WebP only.
- Files never leave your device
- Runs in your browser
- Free, no signup
Plenty for a sharp result
At 140 KB a correctly sized photo keeps fine detail and smooth color. You are close enough to the common 150 KB tier that quality is rarely a worry here.
If your file is far larger than it needs to be in pixels, resize it down first so the budget covers a focused image rather than wasted resolution.

No guesswork on the quality dial
The tool lowers JPG quality in steps and re-checks the size, stopping at or just under 140 KB. You skip the manual export-and-measure cycle.
All processing stays in your browser. The image is never uploaded, so it remains private on your device.