WEBP Compressor Online

WEBP already beats JPG and PNG on size, which is exactly why people assume there is nothing left to squeeze. In practice most WEBP files leave an exporter with a generous quality setting, an unnecessarily large pixel dimension, and metadata that nobody renders. A photograph pushed out at quality 95 for a hero banner that displays at 1200 pixels wide carries a lot of weight the page never uses. Compressing it again is usually the cheapest performance win available, because it needs no code change, no plugin, and no redesign.

The reason to bother is measurable. Image weight is the single largest contributor to Largest Contentful Paint on most sites, and LCP is a Core Web Vitals metric that feeds directly into how Google evaluates a page. Trim a few hundred kilobytes off the images above the fold and the metric moves. The same maths applies to bandwidth bills, since a CDN charges for every byte it serves, and to storage, since a catalogue with ten thousand product shots at 800 KB each occupies eight gigabytes before anyone notices.

This compressor runs entirely inside your browser. Files are decoded onto a canvas, re-encoded with the quality you choose on a slider from 10 to 100 with 80 as the default, and handed straight back to you as a download. Nothing is uploaded, so there is no queue, no waiting for a server, and no copy of your image sitting on someone else’s disk afterwards. The output format control defaults to Keep Original, which means a WEBP in gives you a WEBP out, and you can force WEBP explicitly if you are feeding in PNG or JPG sources.

Choosing a quality setting is a judgement call rather than a fixed rule, but a few ranges cover most work. Around 60 to 75 suits ordinary page imagery where the file is seen once and scrolled past. Somewhere between 75 and 85 is right for social posts, portfolio pieces, and anything with skin tones, since faces show banding early. Push to 85 or above for screenshots containing text, because compression artefacts make small type look broken before they make anything else look wrong. Whatever you pick, always compress from the original file rather than recompressing an image that has already been through this process, since every generation discards a little more detail.

Two limits are worth stating plainly. This is lossy compression, so pixels are discarded and the result is not byte-identical to the source, which means it is the wrong tool for archival masters. And the target here is a quality level, not a file size, so if a form demands something under 100 KB exactly, ask for a specific size instead using the compress-to-size pages, which search for the right quality automatically rather than making you guess on a slider.