3.8.0

There are 6 plugin updates included with this release:

Performance Lab (performance-lab): v3.8.0

Enhancements

• Add Site Health test for Cache-Control: no-store page response header which disables bfcache. (1807)
• Add Site Health test to verify that static assets are served with far-future expires. (1727)
• Enqueue scripts using plugins_url() instead of plugin_dir_url(). (1761)

Optimization Detective (optimization-detective): v1.0.0-beta1

Enhancements

• Add site health check to detect blocked REST API and short-circuit optimization when unavailable. (1762)
• Allow extensions to opt in to using the web-vitals attribution build via the od_use_web_vitals_attribution_build filter. (1759)
• Disambiguate XPaths for children of BODY with id, class, or role attributes. (1797)
• Eliminate varying URL Metrics by logged-in state and discontinue disabling optimization by default for admins. (1788)
• Improve test coverage for Optimization Detective. (1817)
• Introduce OD_Tag_Visitor_Context::track_tag() method as alternative for returning true in tag visitor callback. (1821)
• Omit element node index in XPaths up to children of BODY. (1790)
• Skip visiting tags in the Admin Bar when optimizing a page. (1816)

Bug Fixes

• Ensure optimization is performed in the wp-env local environment and log debug messages to console when disabled. (1822)
• Skip visiting any tags inside of NOSCRIPT elements. (1783)

Documentation

• Move Optimization Detective docs into README.md. (1763)

Speculative Loading (speculation-rules) v1.4.0

Enhancements

• Implement speculative loading considerations for safer behavior. (1784)

Modern Image Formats (webp-uploads): v2.5.0

Enhancements

• Switch to wp_content_img_tag filter for improved image handling. (1772)

Embed Optimizer (embed-optimizer): v0.4.1

Bug Fixes

• Remove requirement for both mobile and desktop URL metrics to be collected for preconnect links to be added. (1764)

Image Prioritizer (image-prioritizer): v0.3.1

Bug Fixes

• Remove erroneous check for resource initiator type when considering whether to submit LCP background image. (1760)

3.7.0

There are 8 plugin updates included with this release:

Performance Lab (performance-lab) v3.7.0

Enhancements

• Add guidance for managing Performance feature plugins. (1734)
• Automatically discover plugin dependencies when obtaining Performance feature plugins from WordPress.org. (1680)
• Disregard transient cache in perflab_query_plugin_info() when a plugin is absent. (1694)
• Minify script used for ajax activation of features; warn if absent and serve original file when SCRIPT_DEBUG is enabled. (1658)

Bug Fixes

• Fix latest plugin version not being downloaded consistently. (1693)

Enhanced Responsive Images (auto-sizes) v1.4.0

Features

• Accurate Sizes: Incorporate layout constraints in image sizes calculations. (1738)

Enhancements

• Accurate sizes: Pass parent alignment context to images. (1701)
• Accurate sizes: Reorganize file structure by feature. (1699)
• Accurate sizes: Support relative alignment widths. (1737)
• Remove auto_sizes_get_layout_settings(). (1743)

Bug Fixes

• Accurate sizes: Disable layout calculations for classic themes. (1744)

Image Placeholders (dominant-color-images) v1.2.0

Enhancements

• Enhance admin media UI with dominant color support. (1719)

Embed Optimizer (embed-optimizer) v0.4.0

Enhancements

• Incorporate media queries into preconnect links to account for whether embeds are in viewport. (1654)
• Serve unminified scripts when SCRIPT_DEBUG is enabled. (1643)

Image Prioritizer (image-prioritizer) v0.3.0

Enhancements

• Add preload links LCP picture elements. (1707)
• Harden validation of user-submitted LCP background image URL. (1713)
• Lazy load background images added via inline style attributes. (1708)
• Preload image URLs for LCP elements with external background images. (1697)
• Serve unminified scripts when SCRIPT_DEBUG is enabled. (1643)

Optimization Detective (optimization-detective) v0.9.0

Enhancements

• Add fetchpriority=high to IMG when it is the LCP element on desktop and mobile with other viewport groups empty. (1723)
• Improve debugging stored URL Metrics in Optimization Detective. (1656)
• Incorporate page state into ETag computation. (1722)
• Mark existing URL Metrics as stale when a new tag visitor is registered. (1705)
• Set development mode to 'plugin' in the dev environment and allow pages to be optimized when admin is logged-in (when in plugin dev mode). (1700)
• Add get_xpath_elements_map() helper methods to OD_URL_Metric_Group_Collection and OD_URL_Metric_Group, and add get_all_element_max_intersection_ratios/get_element_max_intersection_ratio methods to OD_URL_Metric_Group. (1654)
• Add get_breadcrumbs() method to OD_HTML_Tag_Processor. (1707)
• Add get_sample_size() and get_freshness_ttl() methods to OD_URL_Metric_Group. (1697)
• Expose onTTFB, onFCP, onLCP, onINP, and onCLS from web-vitals.js to extension JS modules via args their initialize functions. (1697)

Bug Fixes

• Prevent submitting URL Metric if viewport size changed. (1712)
• Fix construction of XPath expressions for implicitly closed paragraphs. (1707)

Web Worker Offloading (web-worker-offloading) v0.2.0

Enhancements

• Integrate Web Worker Offloading with Google Site Kit. (1686)
• Integrate Web Worker Offloading with Rank Math SEO. (1685)
• Serve unminified scripts when SCRIPT_DEBUG is enabled. (1643)

Bug Fixes

• Fix tracking events like add_to_cart in WooCommerce integration. (1740)

Modern Image Formats (webp-uploads) v2.4.0

Enhancements

• Automatically opt into 1536x1536 and 2048x2048 sizes when generating fallback images. (1679)
• Convert WebP to AVIF on upload. (1724)
• Enable end user opt-in to generate all sizes in fallback format. (1689)

3.6.1

There is 1 plugin included with this release:

Performance Lab (performance-lab) v3.6.1

Bug Fixes

• Fix race condition bug where activating multiple features sequentially could fail to activate some features. (#1675)

3.6.0

There are 3 plugins included with this release:

Performance Lab (performance-lab) v3.6.0

Enhancements

• Use AJAX for activating features / plugins in Performance Lab. (1646)
• Introduce AVIF header health check. (1612)
• Install and activate Optimization Detective when the Embed Optimizer feature is activated from the Performance screen. (1644)

Bug Fixes

• Fix uses of 'Plugin not found' string. (1651)

Optimization Detective (optimization-detective) v0.8.0

Enhancements

• Serve unminified scripts when SCRIPT_DEBUG is enabled. (1643)
• Bump web-vitals from 4.2.3 to 4.2.4. (1628)

Bug Fixes

• Eliminate the detection time window which prevented URL Metrics from being gathered when page caching is present. (1640)
• Revise the use of nonces in requests to store a URL Metric and block cross-origin requests. (1637)
• Send post ID of queried object or first post in loop in URL Metric storage request to schedule page cache validation. (1641)
• Fix phpstan errors. (1627)

Modern Image Formats (webp-uploads) v2.3.0

Enhancements

• Introduce webp_uploads_get_file_mime_type helper function. (1642)
• Rename webp_uploads_get_file_mime_type to webp_uploads_get_attachment_file_mime_type to clarify scope. (1662)

Bug Fixes

• Fix bug that would prevent uploaded images from being converted to the intended output format when having fallback formats enabled. (1635)

3.5.1

This release fixes an issue with Performance Lab v3.5.0 which was only discovered after it was released:

• Account for plugin dependencies when storing relevant plugin info. (1613)

3.5.0

Update: v3.5.1 was released shortly after this to fix a bug with installing Image Prioritizer from the Performance features screen.

There are 5 plugins included with this release:

Performance Lab (performance-lab) v3.5.0

Enhancements

• Add Web Worker Offloading to list of Performance features. (1577)
• Only store info for relevant standalone plugins in the transient cache. (1573)
• Use a single WordPress.org API request to get information for all plugins. (1562)

Embed Optimizer (embed-optimizer) v0.3.0

Enhancements

• Leverage URL metrics to reserve space for embeds to reduce CLS. (1373)
• Avoid lazy-loading images and embeds unless there are URL Metrics for both mobile and desktop. (1604)

Image Prioritizer (image-prioritizer) v0.2.0

Enhancements

• Lazy load videos and video posters. (1596)
• Prioritize loading poster image of video LCP elements. (1498)
• Choose smaller video poster image size based on actual dimensions. (1595)
• Add fetchpriority=low to occluded initial-viewport images (e.g. images in hidden carousel slides). (1482)
• Avoid lazy-loading images and embeds unless there are URL Metrics for both mobile and desktop. (1604)

Optimization Detective (optimization-detective) v0.7.0

Enhancements

• Send gathered URL metric data when the page is hidden/unloaded as opposed to once the page has loaded; this enables the ability to track layout shifts and INP scores over the life of the page. (1373)
• Introduce client-side extensions in the form of script modules which are loaded when the detection logic runs. (1373)
• Add an od_init action for extensions to load their code. (1373)
• Introduce OD_Element class and improve PHP API. (1585)
• Add group collection helper methods to get the first/last groups. (1602)

Bug Fixes

• Fix Optimization Detective compatibility with WooCommerce when Coming Soon page is served. (1565)
• Fix storage of URL Metric when plain non-pretty permalinks are enabled. (1574)

Web Worker Offloading (web-worker-offloading) v0.1.1

Enhancements

• Add Web Worker Offloading meta generator. (1598)

3.4.1

There are 6 plugins included with this release:

Performance Lab (performance-lab) v3.4.1

Bug Fixes

• Fix Incorrect use of _n(). (1491)

Enhanced Responsive Images (auto-sizes) v1.3.0

Enhancements

• Move Auto Sizes logic from Enhanced Responsive Images to Image Prioritizer. (1476)
• Update auto sizes logic in Enhanced Responsive Images plugin to no longer load if already in Core. (1547)

Image Placeholders (dominant-color-images) v1.1.2

Enhancements

• Use more robust HTML Tag Processor for Image Placeholders. (1477)

Bug Fixes

• Re-remove unneeded phpcs:ignore. (1231)
• Update PHPStan to 1.11.5. (1318)

Image Prioritizer (image-prioritizer) v0.1.4

Enhancements

• Move Auto Sizes logic from Enhanced Responsive Images to Image Prioritizer. (1476)

Optimization Detective (optimization-detective) v0.6.0

Enhancements

• Allow URL metric schema to be extended. (1492)
• Clarify docs around a tag visitor's boolean return value. (1479)
• Include UUID with each URL metric. (1489)
• Introduce get_cursor_move_count() to use instead of get_seek_count() and get_next_token_count(). (1478)

Bug Fixes

• Add missing global documentation for delete_all_posts(). (1522)
• Introduce viewport aspect ratio validation for URL Metrics. (1494)

Modern Image Formats (webp-uploads) v2.2.0

Enhancements

• Convert uploaded PNG files to AVIF or WebP. (1421)

Bug Fixes

• Account for responsive images being disabled when generating a PICTURE element. (1449)

3.4.0

Enhancements

• Remove Server-Timing metric for the autoloaded options query time. (1456)

Bug Fixes

• Avoid sending Server-Timing header when buffer is being cleaned. (1443)
• Fix disabled options from reappearing in Site Health after external update. (1374)
• Improve Performance screen when external requests to WordPress.org fail. (1474)

3.3.0

Enhancements

• Bump minimum WP versions and WP version tested up to. (1333)
• Improve message for WebP site health test. (1249)
• Remove 'Requires at least' and 'Requires PHP' from plugin readmes. (1334)
• Upgrade PHPStan to 1.11.6. (1325)

Bug Fixes

• Extend core's Autoloaded Options Site Health test if present (in WP 6.6). (1298)
• Generate phpunit-multisite.xml on the fly. (1327)

3.2.0

Enhancements

• Add install note after each PerfLab feature plugin in the plugin list table. (1265)
• Update plugins with new banners and icons. (1272)

Bug Fixes

• Fix Server-Timing compatibility with other plugins that do output buffering. (1260)
• Harden autoloaded-options site health test for incorrectly implemented external object cache plugins. (1238)