The tool shrinks images for the web and converts them to the modern WebP or AVIF formats, which are usually tens of percent smaller than JPG and PNG at similar quality. Set the quality and maximum width, process several files at once and download them one by one or as a ZIP. Everything runs in your browser.
Compression runs in your browser (Squoosh WebAssembly codecs); images are never uploaded. AVIF is smaller but slower to encode.
Runs entirely in your browser. Nothing is uploaded or stored.
JPG, PNG, WebP, AVIF or GIF, several at once if you like.
WebP for maximum compatibility, AVIF for the smallest files. Quality 70–80 is usually ideal for the web.
A phone photo is 4000 px wide; the web needs 1600 or less.
One by one or all in a ZIP.
| Use | Width |
|---|---|
| Full-width image | 1600–2400 px |
| Image in article text | 1200 px |
| E-shop product | 1200 px (detail), 600 px (listing) |
| Share image (og:image) | 1200 × 630 px |
| Icon, logo | SVG |
The website audit checks image sizes across a page and shows which images are heavier than 300 kB.
AVIF is usually smaller, especially for photos, but encoding takes longer. WebP is supported by all current browsers and is fast. Ideally offer both through the picture element, as this website does.
No. Compression happens in your browser using codecs from Squoosh (a Google project) compiled to WebAssembly.
Images make up most of the data on a typical page. Large images slow loading, especially on mobile, and hurt Core Web Vitals, which Google uses for ranking.
At around 75 quality the difference is usually invisible to the eye. For logos or graphics with sharp edges, try higher quality or use SVG.
I am still setting up contact. Meanwhile, try the tools that already work.
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