Proxy external resources
ResourcesProxies and optimizes trusted resources hosted on domains without PageSpeed.
Filter
+rewrite_images,-inline_images
· Filter docs
A mod_pagespeed 1.15 filter. ModPageSpeed 2.0 applies it as part of one always-on pipeline, not as a separate switch.
Both frames render identically — that's the goal. The win is in the bytes and requests
below, not the look. They're served live by mod_pagespeed 1.15 on
demo-httpd-1.1.modpagespeed.com; the optimized frame
applies only this filter. Right after a cache purge it may briefly match the original while
the worker rewrites it — reload to see the result.
Measured impact
Total bytes
What changed in the source
The page's HTML, before and after this filter. Red lines are removed, green lines are added.
… 4 unchanged lines …
(see corp deploy/CLAUDE.md), PageSpeed rewrites the reference to a same-
origin, recompressed, long-cacheable URL served from this domain.
-->
- <img src="https://www.gstatic.com/webp/gallery/2.jpg" width="550" height="404"/>
-
+ <head/><img src="https://demo-httpd-1.1.modpagespeed.com/gstatic/x2.jpg.pagespeed.ic.c1VMOX81-x.avif" width="550" height="404"/>
+ <script type="speculationrules">{"prefetch":[{"where":{"href_matches":"/*"},"eagerness":"moderate"}]}</script>
Run this on your own site
This is one of 49 filters mod_pagespeed 1.15 applies in place — self-hosted on
Apache, nginx, and IIS. Install and run it: it optimizes right away and adds an
X-PageSpeed-Warn: unlicensed header until you license it.
Production use requires a commercial license — but the software never locks you out.