Description

The Performance Lab plugin is a collection of features focused on enhancing the performance of your site, most of which should eventually be merged into WordPress core. The plugin facilitates the discovery and activation of the individual performance feature plugins which the performance team is developing. In this way you can test the features to get their benefits before they become available in WordPress core. You can also play an important role by providing feedback to further improve the solutions.

The feature plugins which are currently featured by this plugin are:

Embed Optimizer
Enhanced Responsive Images
Image Placeholders
Image Prioritizer
Instant Back/Forward
Modern Image Formats
Optimization Detective (dependency for Embed Optimizer and Image Prioritizer)
Performant Translations
Speculative Loading
View Transitions (experimental)

These plugins can also be installed separately from installing Performance Lab, but having the Performance Lab plugin also active will ensure you find out about new performance features as they are developed.

Installation

Installation depuis WordPress

Allez sur l’écran Extensions > Ajouter.
Recherchez l’extension Performance Lab.
Installez et activez l’extension Performance Lab.

Installation manuelle

Téléversez le dossier performance-lab complet dans le répertoire /wp-content/plugins/.
Allez sur l’écran de gestion des Extensions.
Activez l’extension Performance Lab.

Après l’activation

Visitez le nouveau menu Réglages > Performances.
Enable the individual features you would like to use.

FAQ

Quel est l’objectif de cette extension ?

The primary purpose of the Performance Lab plugin is to allow testing of various performance features for which the goal is to eventually land in WordPress core. It is essentially a collection of « feature plugins », which makes it different from other performance plugins that offer performance features which are not targeted at WordPress core and potentially rely on functionality that would not be feasible to use in WordPress core. The list of available features will regularly change: Existing features may be removed after they have been released in WordPress core, while new features may be added in any release.

Puis-je utiliser cette extension sur un site en production ?

Per the primary purpose of the plugin (see above), it can mostly be considered a beta testing plugin for the various performance features it includes. However, it’s essential to understand that utilizing it comes with inherent risks. Users are encouraged to proceed with caution and understand that they are doing so at their own risk.

Où puis-je partager mes retours d’expérience ?

Feedback is encouraged and much appreciated, especially since this plugin is a collection of future WordPress core features. If you have suggestions or requests for new features, you can submit them as an issue in the Performance Lab GitHub repository. If you need help with troubleshooting or have a question about the plugin, please create a new topic on our support forum.

Où puis-je signaler des bogues de sécurité ?

L’équipe Performance et la communauté WordPress prennent au sérieux les bogues de sécurité. Nous apprécions vos efforts pour divulguer de manière responsable vos découvertes, et ferons notre possible pour reconnaître vos contributions.

Pour signaler un problème de sécurité, veuillez consulter le programme WordPress HackerOne.

Comment puis-je contribuer à l’extension ?

Les contributions sont toujours les bienvenues ! En savoir plus sur la façon de s’impliquer dans le Core Performance Team Handbook.

Avis

dev2webtheoria 7 juillet 2026

This plugin is a must have on the live website. The performance improvement is very much noticeable.

Eduard Doloc 11 mars 2026 4 réponses

been using a few of the plugins and metrics for testing and scaling, been using some of the plugins noted there on some production sites, but I do advise on never installing the plugins that require optimization detective. let's hope they make it to core fast!

hunain8 15 février 2026

I have tested this plugin on a few sites and it provides some useful performance features that are helpful for optimization and experimentation. The modular approach is nice and makes it easy to enable or disable specific options. However, the interface and documentation could be improved for better clarity, especially for non-technical users. Overall, it’s a solid plugin with potential, but still needs refinement for a smoother production workflow.

Afshari 6 janvier 2026

Performance Lab is the gateway to the future of WordPress. These tools are crucial for anyone serious about site speed, Core Web Vitals, and modern image formats. I have personally translated and reviewed 100% of the strings for the entire Performance Lab ecosystem, including all standalone plugins (WebP Uploads, Speculation Rules, View Transitions, etc.) and their respective Readme files. As the PTE (Translation Editor), I’ve ensured that complex technical terms are translated accurately to help the Persian WordPress community implement these performance enhancements with ease. Kudos to the performance team for these high-quality tools! Best regards, @saeidafshari دوستان و توسعه‌دهندگان گرامی، مجموعه افزونه‌های رسمی تیم کارایی وردپرس، شامل ۱۲ ابزار تخصصی برای افزایش سرعت و بهینه‌سازی سایت، به صورت ۱۰۰٪ فارسی‌سازی و بازبینی شد. تمام مفاهیم مدرن مثل قوانین پیش‌بینی مرورگر و بهینه‌سازی تصاویر به دقت معادل‌سازی شده‌اند تا بتوانید بدون ابهام فنی، از آخرین تکنولوژی‌های جهانی در سایت‌های ایرانی استفاده کنید. با احترام، سعید افشاری