Weston Ruter

Do you mean whether the plugin adds decoding="async"? No, it does not currently do this because WordPress adds it to all images already.

• This reply was modified 1 month, 2 weeks ago by Weston Ruter.

You do not need the Enhanced Responsive Images plugin anymore for sizes=auto, since this has been merged. Nevertheless, work on the plugin is continuing to improve the accuracy of the sizes being generated as well, so this plugin is still relevant: https://github.com/WordPress/performance/issues/1511

Image Prioritizer also ensures that sizes=auto is added correctly based on which images are lazy-loaded.

I also would like there to be more page caching plugins that just do the one thing: page caching. There are some that do that, however. Nevertheless, the intention of Performance Lab is for the features to be eventually merged into core, or at least for there to be a possibility for there to be a merge. WordPress Core has decided to not include page caching. In fact, it used to have page caching but it was removed in WordPress 2.5. Rationale has been linked to here: https://alex.blog/2010/08/10/why-wordpress-doesnt-have-built-in-persistent-caching/

I assume you’re using a Classic Theme as opposed to a Block Theme? If so, you can opt-in to splitting up that CSS file via the following plugin code:

add_filter( 'should_load_separate_core_block_assets', '__return_true' );

Please see the introductory block post.

For Classic Themes, however, this introduces a risk for a flash of unstyled content or that the style rules will apply unexpectedly since some stylesheets will begin to be rendered in the footer.

Now, is there a possibility we could introduce a Performance Lab plugin for doing this automatically, while also ensuring that styles are all loaded in the HEAD in the expected order. As you suggest, it could operate in a similar way as Image Prioritizer. I’ve opened an issue to explore further.

• This reply was modified 1 month, 2 weeks ago by Weston Ruter.

Hello! There are already many page cache plugins available on the WordPress plugin directory. I don’t think this would be developed as a module for Performance Lab since we’d be reinventing the wheel.

Sorry, I don’t have any additional info. I’m not the primary developer for this plugin, but I’ll ping someone who may be able to answer further.

Please provide your Site Health information including your site’s URL so we can better investigate.

It seems Cloudflare automatically optimizes images via their Polish service: https://developers.cloudflare.com/images/polish/

However, this is not free. So if you don’t have it, then it seems using the plugin would be beneficial.

You should see the new image format being used on the frontend of your site.

The wp_service_worker_navigation_route_denylist_patterns filter may be what you need:

https://github.com/GoogleChromeLabs/pwa-wp/blob/881e615b67e9bfd287d7cfd4f17fdaa56448539c/wp-includes/components/class-wp-service-worker-navigation-routing-component.php#L408-L419

I think this is something that y’all will need to contact WP Engine support about. We don’t have visibility into how they have implemented their plugin directory API so unfortunately we don’t have a way to debug this.

It looks like you’re missing do_action( 'error_footer ); in your offline.php. This is required to inject the script: https://github.com/GoogleChromeLabs/pwa-wp/blob/881e615b67e9bfd287d7cfd4f17fdaa56448539c/wp-includes/template.php#L175-L249

What plugins are active on your site? If you can share your Site Health info that would be helpful. You do have Site Kit, WooCommerce, or RankMath installed?

You seem to be using a different plugin.

This should be what you need: https://github.com/GoogleChromeLabs/pwa-wp/wiki/Service-Worker#offline–500-error-handling

Push notifications are not a feature provided by this plugin.