Description

PageSpeed Ninja is the ultimate WordPress performance plugin designed to turbocharge your website’s speed on both desktop and mobile, effortlessly fixing Google PageSpeed Insights issues and improving Core Web Vitals with just a single click.

With PageSpeed Ninja, you can easily:

Enable Gzip and Brotli file compression.
Resolve render-blocking CSS and JavaScript issues.
Improve Critical Rendering Path and automatically generate critical CSS for above-the-fold content.
Minify HTML, JavaScript, and CSS files.
Combine and inline JavaScript and CSS resources.
Defer the loading of JavaScript and CSS.
Optimize images.
Convert images to WebP and AVIF formats.
Implement lazy loading of images with optional low-quality image placeholders.
Optimize the loading of Google Fonts.
Leverage browser caching and server-side caching.
And MUCH more, based on our 10+ years of experience in mobile-optimizing over 200,000 websites.

Why Choose PageSpeed Ninja?

We’ve been at the forefront of mobile web optimization for over a decade now (you might be familiar with one of our popular projects, Lazy Load XT on GitHub). PageSpeed Ninja for WordPress is the culmination of our extensive expertise gained from optimizing the performance of over 200,000 websites on mobile devices. We believe you won’t find a similar, user-friendly, all-inclusive package of performance-boosting features anywhere else.

We’ve built heaps of unique features to ensure lightning-fast loading times for your site, such as our innovative above-the-fold critical CSS generation method and tagged page cache.

We’d love your feedback—please feel free to send us your questions, thoughts, and suggestions.

Before You Install

According to our stats, the plugin improves the speed of 4 out of 5 websites. However, in some cases, certain theme and plugin combinations (particularly related to caching and optimization) may result in compatibility issues. Therefore, our plugin might not be suitable for everyone. In order for you to see how PageSpeed Ninja could work for your site, we’ve created a simple tool where you can test your site before installation. We highly recommend that you visit PageSpeed.Ninja and test your site beforehand.

Uninstallation

When you delete the plugin, it will automatically revert all settings on your site to their original state before installing this plugin. It restores all optimized images and removes the /s directory containing optimized files. Also, any changes made to .htaccess files will be reversed.

Feedback, Bug Reports, and Logging Possible Issues

We welcome all questions, comments, suggestions, and issue reports. Contact us to be added to our private tester Facebook group.

PageSpeed Ninja can log all PHP errors in the wp-content/plugins/pagespeedninja/includes/error_log.php file (see the Troubleshooting section in the Advanced tab of the PageSpeed Ninja settings page).
If you find a problem, please consider sending us that file as well.

Screenshots

See improvement suggestions in one place and fix with single click
Fine tune to get the best performance using advanced settings

Installation

Upload the plugin files to the /wp-content/plugins/psn-pagespeed-ninja directory, or install the plugin through the WordPress plugins screen directly. We highly recommend creating a backup of your site beforehand, just as you would when installing any new plugin.
Activate the plugin through the ‘Plugins’ screen in WordPress dashboard.
Use the PageSpeed Ninja settings screen to configure the plugin to your preferences.
After you have installed the plugin, navigate to PageSpeed Ninja and adjust optimization levels suggested by Google’s PageSpeed Insights (by default, all optimizations are enabled). The plugin will then optimize your images, JS and CSS files, and modify .htaccess files in order to fix issues identified by Google PageSpeed Insights.

FAQ

Does this plugin have any conflicts with Yoast or any of the other SEO plugins out there?: The PageSpeed Ninja plugin should work pretty well with most other plugins without issues. However, if some SEO plugins try to do some of the same things as this plugin, then conflicts could be possible especially if gzip compression is enabled. However, that is pretty unlikely.

Reviews

den7777 October 8, 2022 1 reply

Creates a folder "S" in the root of the site with suspicious content, as they say it's a cache. But the plugin was disabled in the admin panel, and the "cache" was created, why? Breaks sometimes completely at a random moment the layout on the site

isma381 April 12, 2022

Spectacular! you just have to know how to use your settings well, 99 on desktop and 62 on mobile

jhefersonmv October 19, 2021

A pesar de que tiene un año sin actualizar funciona de maravilla! increíble cambio de velocidad que obtuvo mi web. Gracias a los que hacen posible esta gran herramienta.

findikhikayeleri September 3, 2021

A great plugin. I'm waiting for the update.

alex18051 July 8, 2021

Мобильный 56, я на других за 40 еле вылазил, 95 ПК - это просто супер. Спасибище!

mboy2050 June 16, 2021

seems like excellent

Read all 108 reviews

Contributors & Developers

“PageSpeed Ninja” is open source software. The following people have contributed to this plugin.

PageSpeed

“PageSpeed Ninja” has been translated into 2 locales. Thank you to the translators for their contributions.

Translate “PageSpeed Ninja” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

1.0.rc.3 Release Candidate [03 October 2023]

Fixed update in multisite mode

1.0.rc.2 Release Candidate [03 October 2023]

Fixed processing of tagged cache updates with caching disabled

1.0.rc.1 Release Candidate [02 October 2023]

Added a notification message about the license key requirement for external Critical CSS generation
Fixed API key validation
Fixed aspect ratio of gradient LQIP images
Fixed processing of noscript tags by DOM HTML parser
Fixed chroma 4:2:0 support in PSN Pro
Fixed minor UI issues

1.0.beta.2 Beta release [20 September 2023]

Added an admin bar menu with options to clear the page cache and update critical CSS
Added new settings in the “Ensure text remains visible during webfont load” section: “Swap Web-fonts” and “Exclude Web-fonts”
Added support for fonts.bunny.net in addition to fonts.google.com in the “Google Fonts Loading”
Added new settings in the “JavaScript execution time” section: “Delay Async Scripts”, “Delay Scripts”, and “Delay Scripts List”
Moved the cache directory to wp-content/uploads/psn-pagespeed-ninja to ensure cache preservation during updates
Fixed UI issues
Implemented performance optimizations

1.0.beta.1 Beta Release [28 July 2023]

Big code refactoring and bugfixes release
Added API key support for external above-the-fold CSS generation
Added tagged page cache support

0.9.45 Beta Release [22 February 2023]

Fixed anonymous statistics collection
Updated AMDD database

0.9.44 Beta Release [17 November 2022]

Added “Global Above-the-fold CSS” option
Updated AMDD database
Fixed compatibility with PHP8
Minor bugfixes

0.9.43 Beta Release [29 August 2020]

Fixed possible error during deactivation

0.9.42 Beta Release [29 August 2020]

Fixed conflict with AMP plugin
Fixed issue with infinite loading animation for local websites

0.9.41 Beta Release [6 July 2020]

Fixed loading of PageSpeed Insights scores via API v5 (usability score is set to 100)
Changed Google Fonts loading for “Flash of unstyled text” mode via display=swap

0.9.40 Beta Release [1 December 2019]

Fixed compatibility with PHP 7.4 in CSSTidy minifier

0.9.39 Beta Release [13 November 2019]

Fixed compatibility with WP 5.3
Fixed URL parsing in “Optimize integrations”
Fixed lazy image loading

0.9.38 Beta Release [30 April 2019]

Fixed issue with exclusion of JavaScript files
Fixed issue with priority of template_redirect action handler (resulted in conflict with Smart Slider 3)
Fixed issue with processing of AJAX requests
Fixed issue with page caching for logged users
Fixed issue with file cache cleaner in the case of large time-to-live value
Fixed work of “Configure the viewport” setting
Fixed work of libxml-based HTML optimizer
Added new setting to enable/disable optimization for logged users
Added file exclusion in “Non-blocking Javascript”, “Optimize integrations”, “Load external stylesheets”, and “Load external scripts”
Registering of new WP images sizes is applied to the “Fit” image rescaling method only

0.9.37 Beta Release [12 February 2019]

Fixed issue with Distribute Method: PHP

0.9.36 Beta Release [12 February 2019]

Fixed file permissions

0.9.35 Beta Release [12 February 2019]

Fixed issue with possible incorrect markup generation in DNS Prefetch and Google Fonts optimizations
Fixed issue with WooCommerce caching
Fixed issue with open_basedir enabled
Updated AMDD device database for “Scale large images” feature
Improved atomic file operations

0.9.34 Beta Release [21 December 2018]

Fixed version number in WordPress repository

0.9.33 Beta Release [21 December 2018]

Fixed issue in URL parser
Fixed processing of inlined scripts in libxml-based HTML parser

0.9.32 Beta Release [29 November 2018]

Fixed processing of xml (e.g. in sitemap)
Removed copyright headers from minified Lazy Load XT files
Improvement of “Skip initialization scripts” setting

0.9.31 Beta Release [13 September 2018]

Fixed gzip compression for “headers sent” issue
Fixed displaying of active preset name
Fixed removing of empty directories in cache cleaner
Fixed libxml HTML parser
Added support of DONOTCACHEPAGE and DONOTMINIFY constants
Improved performance of the Standard full HTML parser (Pharse library)
Few minor fixes

0.9.30 Beta Release [16 July 2018]

Fixed conflict of “Manage CSS/Javascript URLs” and “Load external stylesheets/scripts” settings
Fixed “Gzip compression” feature for cached pages
Fixed internal caching TTL (detached from “Caching time-to-live” parameter)
Automatic detection of gzip support during initial activation of the plugin

0.9.29 Beta Release [02 July 2018]

Fixed invalidation of expired page cache after clearing fragment cache
Fixed invalidation of page cache after saving settings
Fixed work with Beaver Builder and Massive Dynamic Builder
Changed default cache time-to-live in presets
“Generate srcset” feature is moved from experimental to stable

0.9.28 Beta Release [27 June 2018]

Fixed issue with image rescaling
“Generate srcset” feature is moved from experimental to stable

0.9.27 Beta Release [25 June 2018]

Fixed external Above-the-fold CSS generation in backend
Fixed issue with merging of non-existing files
Fixed merging of JS/CSS URLs with hash-part in URL
Fixed conflict with ob-handlers ordering
Added experimental caching of optimized pages
Added HTTPS support for all requests to pagespeed.ninja
Added tooltips displaying for touch screens in Advanced tab
Updated TidyCSS to ver. 1.5.7 from https://github.com/airyland/CSSTidy
Updated presets
Performance optimizations

0.9.26 Beta Release [14 June 2018]

Fixed “Flash of unstyled text” mode of Google Fonts loading
Fixed position of the Support badge
Fixed conflict with plugins that do ob_start() in ‘template_redirect’ action (by setting priority to 5)
Fixed generation of absolute URLs in merged CSS files

0.9.25 Beta Release [09 May 2018]

Fixed javascript order with “Skip initialization scripts” option

0.9.24 Beta Release [08 May 2018]

Fixed URL quoting in CSS minification

0.9.23 Beta Release [07 May 2018]

Fixed Fast stream and libxml parsers
Fixed work of Above-the-fold CSS with libxml parser

0.9.22 Beta Release [06 May 2018]

Fixed “Configure the viewport” feature
Fixed “Load external files” feature
Fixed clearing of Page Cache
Fixed generation of above-the-fold CSS in the Advanced tab
Fixed check for AMP pages
Fixed processing of inlined tags with CDATA wrapping
Added new optimization feature: Skip initialization scripts
Added support of Cache-Control:immutable header for generated files
Updated AMDD database
Default JPEG quality level is set to 85 (95 in Safe preset)
Options to load external CSS and JS are moved to “Leverage browser caching” section

0.9.21 Beta Release [20 March 2018]

Fixed issue with editing of theme files
Fixed loading and caching of external files
Fixed backend rendering issues
Fixed issue with onload/onerror attributes and async javascript loading
Fixed issue with onload/onerror attributes and lazy image loading
Fixed libxml HTML parser
Fixed CSS parser
Fixed URL minification in rel attribute of tag (rel=stylesheet allowed only)
Fixed gzip compression in the case of enabled ob_gzhandler
Fixed uninstallation of advanced-cache.php
Fixed issue with initialization of lazy image loading
Fixed processing of “id” attribute in tags
Added select of preset in the after-install popup
Added new settings preset: “Compact”
Added descriptions for presets
Improved compression of JPEG images
Improved Troubleshooting section in Advanced settings
Improved detection of the “Distribute method” after initial plugin activation
Improved cleaning up of outdated cache files and directories
Disabled optimization of AMP pages
Disabled optimizations prior to apply profile preset

0.9.20 Beta Release [22 February 2018]

Fixed pre-check of free memory amount in GD image rescaling and optimizing
Improved Imagick image compression
Minor performance improvements
Updated tooltips in Advanced settings

0.9.19 Beta Release [15 January 2018]

Fixed rebasing of CSS in the “Load external files” mode
Fixed conflict of http and https caches
Added option to merge embedded scripts and styles in section only
Added warning about conflict of advanced caching and WooCommerce

0.9.18 Beta Release [03 January 2018]

Fixed blank screen issue
Fixed issue with incorrect URLs in optimized css files
Improved Google Fonts loading

0.9.17 Beta Release [07 December 2017]

Fixed issue with Google Fonts loading

0.9.16 Beta Release [06 December 2017]

Caching of PageSpeed Insights scores
Improved Google Fonts loading
Fixed javascript processing in “Optimize integrations” feature
Fixed lazy loading with some slider plugins
Fixed issues with above-the-fold css and async css loading

0.9.15 Beta Release [15 November 2017]

Fixed issues with nonblocking CSS loader

0.9.14 Beta Release [14 November 2017]

Fixed merging of JavaScript
Fixed merging of CSS
Fixed CSS parser
Fixed processing of @import in CSS optimizer
Fixed parsing of tag in HTML5 parser
Fixed nonblocking css and js in IE6-8
Fixed lazy image loading in IE8
Fixed conflict with few plugins that use lazy image loading
Fixed issue with hidden switches in backend settings page
Fixed conflict of the Masonry library and asynchronous css loading
Added Autogeneration of srcset attribute for lazy image loading
Added cache reset after post/page/attachment/theme changes
Disabled optimization of comment feeds

0.9.13 Beta Release [10 October 2017]

Fixed backend interface
Enabled optimizations by default
Reset js/css cache after update

0.9.12 Beta Release [10 October 2017]

Fixed processing of @import rules in css files
Fixed error in config reading
Fixed Fatal error in libxml HTML parser
Fixed Fatal error in loadATFCSS()

0.9.11 Beta Release [09 October 2017]

Fixed error message during uninstallation
Fixed warning message in the case of disabled js and css minification
Added lazy loading of iframes
Updated presets
Updated AMDD database
Changed configuration file format to allow plugin to be translated to other languages

0.9.10 Beta Release [30 September 2017]

Fixed text domain slug
Fixed issue with quoted keyframe name in css parser
Fixed disabling of caching for logged-in users
Fixed disabling of non-blocking js mode
Improved estimation of required memory in image processing
Reduced memory usage by css optimizer
Switched remote connections to use download_url function

0.9.9 Beta Release [27 September 2017]

Marked as tested with WordPress 4.8.2
Fixed undefined index in abovethefoldcss.php
Removed unused jQLight option

0.9.8 Beta Release [27 September 2017]

Fixed render blocking issues
Fixed image lazy loading with Fast simple HTML parser
Fixed Google Fonts loading
Added check of memory limit in image optimization and rescaling
Added new lazy loading script (Lazy Load XT 2.0)
Minor backend changes

0.9.7 Beta Release [06 September 2017]

Marked as tested with WordPress 4.8.1

0.9.6 Beta Release [05 September 2017]

Switched to native updating

0.9.5 Beta Release [27 August 2017]

Added optimization of srcset attribute in images
Added support of HTTP/2 Server Push
Fixed “Viewport width” feature
Fixed “DNS prefetch” feature in the “Fast simple” HTML parser mode
Fixed Google Font optimization

0.9.4 Beta Release [23 July 2017]

Added request to allow using of external pagespeed.ninja critical CSS service and to send usage data
Removed update from versions prior to 0.8.23 (first public alpha release)
Moved “Optimize Emoji loading” option to “Minify JavaScript” section

0.9.3 Beta Release [03 July 2017]

Fixed lazy image loading in the “stream” optimizer mode
Improved settings page for small/medium screen width
Colors of switches depend on diference between original and current scores
Updated AMDD database

0.9.2 Beta Release [20 June 2017]

Added preview of results (without affecting website for other users)
Added “Optimize Emoji Loading” feature
Added “Google Fonts loading” feature
Added “Skip first images” and “Noscript position” features to fine tune lazy image loading
Added support of ImageMagick PHP extensions for image optimization
Fixed processing of non-standard JPEG and PNG images
Fixed CSS parser
Fixed issue with merging of subsequent javascripts before
Fixed merging of Javascript and CSS in the “stream” optimizer mode
Fixed merging of Javascript and CSS with “onload” attribute
Fixed processing of tags
Fixed dnsprefetch generation
Fixed timeout issue in the plugin activation
Added set width and height attributes for lazy loading images
Fixed loading of URLs starting with “//”
Fixed settings page in older browsers
Fixed several minor issues
Improved performance of local above-the-fold css generation
Google fonts are loaded synchronously by default
Excluded Google Analytics from “Non-blocking Javascript” feature
Default limits of inlined Javascript and CSS are set to 4096 bytes

0.9.1 Beta Release [07 April 2017]

Added “Clear Cache” and “Clear Database Cache” button to the Troubleshooting section
Fixed Manage URLs feature in Troubleshooting section
Fixed automatical cache clearing

0.9.0 Beta Release [04 April 2017]

New backend design
“Troubleshooting” section in Advanced settings
Fixed image lazy loading in “stream” html optimizer
Fixed in-browser generation of above-the-fold css
Fixed “Exclude files list” feature
Added notification about unsaved changes
Added notification about generated above-the-fold css
Minor performance improvements
Updated AMDD database

0.8.27 Alpha Release [01 December 2016]

Added server-side page caching implementation
Fixed activation of image optimization and lazy loading settings
Minor performance improvements
Updated AMDD database

0.8.26 Alpha Release [08 November 2016]

Significant code refactoring
Performance improvements
Added “Experimental” preset
Added loading animation for Google’s Page Speed scores in backend
Fixed PHP warnings in plugin activation/deactivation
Fixed few Windows-related issues
Removed “Avoid app install interstitials that hide content” section (removed by Google’s Page Speed service)
Moved image lazy loading settings to “Prioritize visible content” section

0.8.25 Alpha Release [07 October 2016]

Fixed few PHP warnings and notices
Enabled logging for backend settings page and frontend pages only
Added compatibility with caching plugins
Added “Auto” option for “Load jQLight library” setting
Other minor changes

0.8.24 Alpha Release [04 October 2016]

Added notice about compatibility with caching plugins
Uninstall of the plugin deletes generated low-quality image placeholders and gzipped svg images

0.8.23 Alpha Release [21 September 2016]

Significant code refactoring
Added error logging to includes/error_log.php
Added “Low-quality image placeholders” setting
Added “Vertical lazy loading threshold” setting
Updated AMDD database
Other minor changes

0.8.22 Alpha Release [14 July 2016]

First pre-public alpha release. Distributed privately.