I have here a very strange problem with mod_proxy_html which I think is a bug. The HTML code which gets parsed looks like this: <a href="/old/something.html" style="background-image:url('/old/images/background.png')">link</a> Our configuration looks like this: ProxyPass / ajp://localhost:9000/webapp/ <Location /> SetOutputFilter INFLATE;proxy-html;DEFLATE ProxyPassReverse / ProxyHTMLExtended On ProxyHTMLURLMap /old/ /new/ RequestHeader unset Accept-Encoding </Location> And in the module config file I added this: ProxyHTMLLinks a href style From my understanding this should now filter the HREF and the STYLE attribute. But it only filters the HREF. Either the documentation is not clear enough or there is really a bug in the software. I tested it with httpd version 2.4.6 which was coming with CentOS7. I checked the change logs and there seems to be no changes regarding this up to 2.4.10.
*** This bug has been marked as a duplicate of bug 56288 ***