Compress WebP Images Online
Shrink WebP files further with an adjustable quality slider. Useful when an exported WebP is still heavier than your page budget allows.
Start CompressingWhy Compress WebP Files?
Exports are often too generous
Design tools export WebP at quality 90 or above by default. Dropping to 75 typically halves the file with no visible change.
Already the right format
Compressing rather than converting means you keep WebP's advantages, including the alpha channel, and only trade quality for size.
Page weight budgets
Hitting a Largest Contentful Paint target is usually about total image bytes. This is the last lever before changing the image itself.
Preview before committing
The estimated output size updates as you move the slider, so you can find the point where quality starts to visibly suffer.
Frequently Asked Questions
Is compressing an already-lossy WebP a bad idea?
It is a second lossy pass, so some degradation is unavoidable. Going from quality 90 to 75 is usually invisible. Below about 60, edges and gradients start to show artifacts.
Does transparency survive?
Yes. The alpha channel is preserved at every quality setting.
How much smaller should I expect?
From a typical quality 90 export, 40 to 60% at quality 75. Files already compressed hard will barely move, which the size preview will show you before you commit.
Why does compression run on the server?
Compression quality is the whole product here, and sharp's encoder consistently beats what a browser canvas can produce. Conversions run locally, but compression is worth the upload.