Compress WebP Images Online (Free)

Why WebP gets large

Cameras and image editors often save WebP at quality 95-100%, where the extra bytes buy nothing visible. Dropping to 70-80% keeps photos flawless while slashing size — the trick is that most WebP files are already over-compressed from the source.

Compression is lossless to the eye

Compressed at quality 75-82%, a WebP photo is visually identical to the original. On websites, this can cut page weight by hundreds of KB per image — a direct Core Web Vitals and SEO win.

Compress WebP to a specific target

1. Open the Compress Image tool.
2. Drop your .webp file.
3. Set output format to WebP and quality to 75%.
4. Watch the live size estimate.
5. Download.

Capping width at 1920px reduces size further for desktop-first viewing — a common extra step for hero images.

WebP compression: the knobs that matter

WebP's quality slider behaves differently from JPG's: because the format is more efficient, the same perceptual quality consistently lands 25-35% smaller than JPG. In practice, WebP at quality 75-80 looks equivalent to JPG at 85-90 - which is why starting at 80 and adjusting from there beats sliding down from 100.

WebP also carries a lossless mode (transparency-heavy graphics, logos), selectable when you need alpha without artifacts. Two common scenarios: recompressing an already-WebP file (do it only if the incoming file is unusually large - re-encoding a compressed WebP adds a second lossy generation for little gain), and converting JPG to WebP (always a win, one generation). Check the readout against your target budget rather than the slider position - the number is what the browser actually transfers.