WebP is usually 25–35% smaller than JPEG at matched quality, and it handles transparency, which JPEG cannot. Output format is preset to WebP below — drop your files in and convert.
Output preset to WebP. Drop in JPG, PNG, HEIC or GIF files.
WebP was built by Google specifically for the web, and it is better at the job than the formats it replaces because it is a much newer design.
On an image-heavy page, converting to WebP is frequently the single largest performance improvement available, and it takes minutes.
Every current browser supports WebP: Chrome, Firefox, Edge, Safari, Opera, and every mobile browser in meaningful use. Safari was the last holdout and added support in 2020.
Unless you must serve visitors on browsers from before 2020, you can use WebP directly with no fallback. If you do need one, the <picture> element handles it: list the WebP source first and a JPEG after, and each browser takes what it can read.
WebP is not automatically the right answer.
AVIF is newer again and typically 20% smaller than WebP. It is also slower to encode and slower to decode, and support, while broad, is not yet universal.
The practical position today: WebP as the default, AVIF where the saving genuinely matters and you can test it. PixSqueeze offers both — switch the format dropdown to AVIF and compare the two results on your own images before committing.
For the web, generally yes — WebP files are typically 25–35% smaller than JPEG at the same visual quality, and WebP also supports transparency and animation, which JPEG does not.
Yes. Chrome, Firefox, Edge, Safari and Opera all support WebP, including their mobile versions. Safari added support in 2020, which was the last significant gap.
Converting from JPEG means one more lossy pass, so work from the highest-quality source you have. At a quality setting of 75–85 the difference is not visible at normal viewing sizes.
Yes. WebP supports an alpha channel, so transparent areas in a PNG survive the conversion while the file usually gets dramatically smaller.