Retcon

Retcon adds a collection of powerful Twig filters for modifying HTML.

Here are some of the things Retcon can do:

• Add, remove, modify or rename attributes for multiple dom nodes matching the given selector(s) (for example, p:first-child, img, span.foobar etc)
• Remove DOM nodes by selector (e.g. remove all span tags)
• Remove everything but given selectors (e.g. remove everything except img tags)
• Transform inline images (it even uses Imager, if installed)
• Add srcset or lazyloading to inline images (for example, images embedded in Redactor fields)
• Inject strings or HTML content
• Change tag names for given selectors (e.g. change all occurrences of <h1> to <h2>)

Check out the Wiki for complete docs and examples.