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Jetpack Boost – Website Speed, Performance and Critical CSS icon

Jetpack Boost – Website Speed, Performance and Critical CSS

v4.5.0
by Automattic · 4.7 (583 reviews)

Speed up your WordPress site by optimizing page performance with Jetpack Boost. Easily activate one-click optimizations to boost your Core Web Vitals.

200K+ active installs Updated Oct 15, 2025 Tested to 6.8.3 Requires PHP 7.2
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Jetpack Boost – Website Speed, Performance and Critical CSS

About Jetpack Boost – Website Speed, Performance and Critical CSS

Jetpack Boost is a WordPress plugin that optimizes your website's performance to improve page loading speed and boost your Core Web Vitals. It offers one-click optimizations to increase your website's speed, improve search engine rankings, reduce bounce rates, and increase conversion rates. The plugin includes modules for optimizing CSS loading, page caching, deferring non-essential JavaScript, image optimization, using an Image CDN, and concatenating and minifying CSS and JS files.

Screenshots

Jetpack Boost – Website Speed, Performance and Critical CSS screenshot
Jetpack Boost – Website Speed, Performance and Critical CSS screenshot
Jetpack Boost – Website Speed, Performance and Critical CSS screenshot
Jetpack Boost – Website Speed, Performance and Critical CSS screenshot

Frequently asked questions

What does Jetpack Boost do?
Jetpack Boost speeds up your WordPress site by optimizing page performance. It offers one-click optimizations to boost Core Web Vitals.
How does Jetpack Boost improve SEO?
A faster website, achieved with Jetpack Boost, ranks higher on Google and improves your SEO. Improving Core Web Vitals also helps you rank higher on Google.
What are the key performance modules in Jetpack Boost?
Jetpack Boost includes modules like Optimize CSS Loading, Page Cache, and Defer Non-Essential JavaScript. Optimize CSS Loading generates Critical CSS, Page Cache saves pages as static files, and Defer Non-Essential JavaScript moves tasks to after initial loading.

Changelog

4.5.0 – 2025-10-15

Added

  • Defer JS: Exclude Slider Revolution scripts to avoid broken sliders.

Changed

  • Update package dependencies.

Fixed

  • My Jetpack page: fix visual compatibility issue with Hello Dolly plugin.

See the previous changelogs here

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