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ModPageSpeed 2.0: AVIF, WebP, and critical CSS — up to 69% less page weight on the live demo

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Proxies 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.

Original Open in new tab
Optimized Open in new tab

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

86.7 KB 81.7 KB
−6%

What changed in the source

The page's HTML, before and after this filter. Red lines are removed, green lines are added. 


                
                  

                      … 6 unchanged lines …
                    

                           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.zYM10DR679.jpg" width="550" height="404"/>

Run this on your own site

This is one of 47 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.

Download & run
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