ldc-groupe/content/plugins/webp-express/docs/regex.md

Pattern used for image urls: in attributes: https://regexr.com/46jat in css: https://regexr.com/46jcg

In case reqexr.com should be down, here are the content:

in attributes

pattern: (?<=(?:<(img|source|input|iframe)[^>]\s+(src|srcset|data-[^=])\s*=\s*["']?))(?:[^"'>]+)(.png|.jp[e]?g)(\s\d+w)?(?=/?["'\s>])

text: Notice: The pattern is meant for PHP and contains syntax which only works in some browsers. It works in Chrome. Not in Firefox.

The following should produce matches:

In srcset, the whole attribute must be matched

Common lazy load attributes are matched:

The following should NOT produce matches:

Ignore URLs with query string:

src="http://example.com/header.jpeg"