Speed Booster Pack ⚡ PageSpeed & Performance Optimization – WordPress plugin

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Speed Booster Pack is maintained & operated by Optimocha, a company that offers special speed optimization services filled with people who obsess about speed!

WordPress is, hands down, the most popular content management system in the world. But like all giants, WordPress gets bigger and bigger every release; and it needs you to stay healthy and fast. Otherwise, your website can get slower and nobody likes slow websites. NOBODY. Not only your visitors hate your website, but also search engines (especially Google) penalizes you and drop your search engine rankings.

Improving your site’s speed will get you a better score on major speed testing services such as Google PageSpeed, GTmetrix, Pingdom, WebPageTest and will also improve your overall site’s usability. This will help Google and other search engines to rank your site higher in search results thus sending more traffic.

Benefits of Speed Booster Pack

Each second of delay can cause up to 20% loss in conversion rates (source: Google). “Conversion” means converting visitors to something more than a “visitor”: leads, customers, subscribers, followers… you name it.

You might lose more than half of your visitors if your website loads slower than three seconds! (source: Google again) This is a huge problem, and it’s hugely overlooked among other SEO-related concerns. People don’t realize how important speed is, in the eyes of search engines.

That’s where Speed Booster Pack comes in: With its ever-evolving codebase, Speed Booster Pack aims to increase your site performance, page load times and PageSpeed (Lighthouse) scores! Optimocha, the company behind Speed Booster Pack, has a team with a mutual obsession for speed; so you can be sure that your site will be in good hands.

How Speed Booster Pack helps you get better PageSpeed scores:

  • CSS optimization: You can inline and minify all CSS in your pages, and save on HTTP requests.
  • JavaScript optimization: Deferring JS and moving them into the footer makes them non-render-blocking, which Google PageSpeed likes so much.
  • (NEW!) Lazy loading: With the latest native browser feature for lazy loading and a state-of-the-art lazy loader script, your images will load as soon as they’re in the viewport (instead of all at once). This alone can make your site faster than ever!
  • Remove clutter: Clutter is always bad, especially for page sources; and faster websites have less clutter inside their pages. Removing unnecessary junk is key to solid speed optimization work.
  • (NEW!) Instant Page: This brand new tool helps your visitors get to the next page in your website by prefetching any internal link the visitor’s about to click. It’s not AI or anything but it’s a pretty smart way to optimize your site!
  • Disable unnecessary stuff: This one’s a no-brainer – if there’s less work for WordPress, it works faster.
  • (NEW!) WooCommerce optimization: WooCommerce is awesome and all, but it could use some help to speed up. And Speed Booster Pack does exactly that: With a few tweaks, it resolves some WooCommerce speed bottlenecks.
  • CDN integration: Content delivery networks are essential for every website, especially if its visitors come from all around the world. With Speed Booster Pack’s CDN integration feature, you can easily start using the CDN of your choice in WordPress.
  • Google Analytics localization: Google itself can surely benefit from a speed optimization job, but they’re not picking up our calls. Oh well, the least we can do is to help you load Google Analytics from your own server.
  • …and much more: We’re constantly working on building a better performance optimization plugin for tens of thousands of people, and hundreds more downloading Speed Booster Pack every day. Rest assured, our roadmap is always full of new ideas!

For complete usage instructions, you can visit the Plugin Documentation page.

Translators are always welcome & always rewarded!

More than half of WordPress users don’t speak English, and missing out so much! That’s why Optimocha is always looking for volunteers to translate Speed Booster Pack so more and more people can benefit from its goodness. Oh, and we reward the people who help us! Reach out to us to become a translation editor in your language, and get rewarded with special discount codes of our services!

About Optimocha Speed Optimization Services

Speed optimization plugins might do a great job at optimizing your website and increasing your PageSpeed scores, but even they can’t perform well on websites with poor setups. There are lots of factors to think about when it comes to web performance optimization. That’s where we, as Optimocha, come in: We log in to your website; create a specialized optimization report considering all your plugins, your theme settings, your hosting environment and your whole content; then we get our hands dirty to get your website as fast as possible. To learn more about our services and get in touch with us, here are some links:


Even though the plugin works perfectly well on most WordPress websites, it’s not perfect. We just need to make sure that we’re on the same page: This plugin, no matter how hard we work on it, might have bugs in it and your site has an off chance to have issues with the plugin. It doesn’t do anything permanent to your pages’ source codes, so deactivating the plugin and clearing your browser & server caches will solve any kind of issue it might cause. Other than that, we won’t be able to take responsibility if something else clashes with Speed Booster Pack.

  • Plugin options page
  1. Download the plugin (.zip file) on your hard drive.
  2. Unzip the zip file contents.
  3. Upload the speed-booster-pack folder to the /wp-content/plugins/ directory.
  4. Activate the plugin through the ‘Plugins’ menu in WordPress.
  5. A new sub menu item Speed Booster will appear in your main Settings menu.

For complete usage instructions, you can visit the Plugin Documentation page.

This plugin broke my site!

It’s possible that the theme or your plugins might be using some old code that isn’t compatible with Speed Booster Pack’s code. If that’s the case, try disabling some features in the Advanced tab. If that doesn’t work, try deactivating the plugin and clear your browser & server caches. If that does the trick, reach out to us so we can help you. If the site is still broken, though, there’s obviously another reason for your site breaking because everything Speed Booster Pack does, it does it on-the-fly. Deactivating the plugin (and clearing your caches) will make everything go away.

I have a bug report!

We love you already! Please contact us (link above in the About section) so we can get to the bottom of the bug you found. If it’s a legitimate bug, you’ll be awarded with discount coupons to our services!

I like your plugin, how do I thank you?

We don’t accept any donations, if that’s what you’re asking! 🙂 But we do like to have our users review the plugin with a fair star rating. And we always appreciate you recommending our plugin to other people!

I need more than Speed Booster Pack!

Our main business is special speed optimization services, tailored for every website we work on. On our website, you can review our speed optimization packages and contact us.

How often do you update the plugin?

All the time! We’re always looking for new ways to get this plugin to a better state: We code new features, we fix existing bugs, and we try our best to make Speed Booster Pack more and more popular. And we always appreciate a helping hand: If you’ve got a new feature to offer, you can suggest it over here. If we eventually make it happen and/or you help us make it happen, you’ll be rewarded with handsome discount coupons or even free speed optimization services!

“Speed Booster Pack ⚡ PageSpeed & Performance Optimization” is open source software. The following people have contributed to this plugin.



Release Date: 24 April 2020

  • Added: A new feature called PreBoost will allow you to add static assets as <link rel="preload" /> elements into page sources.
  • Added: Two new (dismissible) notices will ask SBP users to participate in testing the new Speed Booster Pack v4.0 (beta), and to translate SBP into their own language.
  • Updated: Tested for WordPress 5.4.
  • Updated: Rewrote the Google Fonts optimization script.
  • Updated: Updated lazyload.js to 15.1.1.
  • Fixed: Hooking the cart fragments script.
  • Fixed: Various tiny fixes.

Release Date: 29 February 2020

  • Added: You can now exclude assets from lazy loading.
  • Added: More “default” exclude rules added for the JS optimization feature.
  • Fixed: An “empty needle” warning regarding replace functions.
  • Updated: Updated lazyload.js to 12.5.1.
  • Removed: Unnecessary jQuery UI slider script in the options screen.


Release Date: 15 February 2020

  • Added: New feature – Optimize Google Fonts!
  • Updated: Rewrote the whole JavaScript optimization feature! Hopefully it will work even better than our previous version. We also added a simple migration notice to not break current configurations, so be sure to migrate!
  • Removed: JavaSript deferring feature has been removed – coming back in a future release!
  • Removed: Deleted the non-working review nag.
  • Updated: Updated lazyload.js to 12.4.0.
  • Updated: Refactored the code a bit. Also cleaned up a lot of unnecessary stuff.
  • Fixed: Speed Booster Pack is disabled for all (almost) Page Builder instances, and even a few other plugins that have front-end editors! You can also temporarily disable SBP for a specific URL by adding sbp_disable=1 at the end of a URL.
  • Fixed: Tabbed navigation in the settings page is working better now.
  • Fixed: A small issue in the emoji disabler feature is fixed.
  • Fixed: Some translatable strings are changed and a few untranslatable strings are fixed.

Release Date: 11 November 2019

  • Tested with WordPress 5.3.
  • Updated: Updated instant.page to 3.0.0.
  • Updated: Updated lazyload.js to 12.3.0.
  • Changed the title of the plugin, and truncated the description.

Release Date: 18 October 2019

  • Fixed: Added literally one question mark into the lazy loader script.

Release Date: 18 October 2019

  • Updated: Rewrote the readme file from scratch (the description parts).
  • Updated: Updated instant.page to version 2.0.0 and changed its filename to inspage.js because ad blocker plugins started blocking instant.page too.
  • Fixed: Some errors in the CSS optimizer library.
  • Removed: A little house cleaning for unused files.


Release Date: 10 July 2019

  • Fixed: Set the plugin URL as relative, to comply with SSL enabling plugins.
  • Updated: Moved the Local (Google) Analytics script to the /wp-content/cache/ directory.
  • Updated: Rewrote some code to comply with WordPress & PHP coding standards.
  • Updated: The plugin’s readme file has now only 5 tags, because the WordPress plugin directory only minds the first 5 tags. Heh.

Release Date: 04 June 2019

  • Fixed: Quick fix for the “Move scripts to footer” option.


Release Date: 03 June 2019

  • Added: The new uninstall.php file now removes plugin settings when you delete the plugin. (Deactivating the plugin doesn’t remove plugin settings.)
  • Fixed: Minor styling & HTML validation fixes for the settings panel.
  • Updated: Rewrote part of the Localize Analytics feature, and update the default Google Analytics code.
  • Updated: Tags in readme.txt.
  • Tested: Ensured the plugin works in WordPress version 5.2.1 and PHP version 5.6.


Release Date: 20 May 2019

  • Speed Booster Pack turns five! We’re celebrating SBP’s birthday (20th May) with a better (WAY better) admin interface. We changed places of some of the options in the General and Advanced tabs, and put a “be careful” warning on top of the Advanced, CDN and Google Analytics tabs. We also updated the CSS, and added a sidebar which has some speed test links that could turn into speed test widgets in the future!
  • New: Added a “Disable jQuery Migrate” option.
  • Fixed: Added a WooCommerce check for the “Disable cart fragments” option.
  • Updated: The POT file is recreated and will be updated on each feature update.
  • Removed: The “Load JS from Google Libraries” option.
  • Removed: The “Disable all above CSS options on mobile devices” option.
  • Removed: The “Disable XML-RPC” option.
  • Removed: The “Remove extra Font Awesome styles” option. This will be added later, but needs a rewrite.
  • Removed: Some very unnecessary CSS styling both in the plugin’s main style.css file and a separate, jQuery UI-related file.


Release Date: 03 May 2019

  • Fixed most of the typos
  • Added option: “Disable cart fragments”
  • Added option: “Integrate instant.page”
  • Removed option: JPEG quality
  • Removed all default options for new users
  • Fixed the issues with already defined constants
  • Fixed the double jQuery issue
  • Tested for WordPress 5.2


Release Date: 02 April 2019

  • Speed Booster Pack is acquired by Optimocha!
  • Updates to the Optimize More tab


Release Date: 18 February 2019

  • Improved admin UI
  • Added “Disable Self Pingbacks” option
  • Added “Disable Dashicons” option
  • Added “Disable Google Maps” option
  • Added “Disable Heartbeat” option
  • Added “Heartbeat frequency” option
  • Added “Autosave interval” option
  • Added “Remove REST API Links” option
  • Added “Limit Post Revision” option
  • Added CDN options
  • Added Google Analytics options
  • Removed “Remove RSD(Really Simple Discovery) Link” option
  • Removed “Image compression level” option


Release Date: 09 December 2018

  • removed uninstall feedback


Release Date: 05 December 2018

  • minor backend tweaks – notice
  • added language files


Release Date: 08 November 2018


Release Date: 08 November 2018

  • minor tweaks & version bump
  • removed ShortPixel aff integration


  • Temporarily remove lazyLoad as the bundled JS files, namely, CrazyLazy don’t seem to be working properly with the latest jQuery version.


  • Bumped FontAwesome bundled CSS version from 4.1 -> 4.7 and changed to using MaxCDN
  • (Hopefully) fixed the issue affecting relative/absolute paths when using minify CSS
  • Wrongfully used escape functions
  • Should use wp_scripts-> done instead of wp_scripts->queue
  • Update Use Google Libraries 3rd party dependency
  • Can’t be fully translated because of one wrong text-domain string
  • Change UI to WordPress Core UI
  • Added plugin uninstall feedback
  • Added plugin (dedicated) support tab && moved plugin feedback section only to support tab
  • Added tooltips to all fields
  • Re-worked the page load / site stats bar & added a bit more info
  • Removed the old way of handling the uninstall hook & deletion of the sbp_integer variable from SBP when you uninstall it. In case you change your mind & reactivate the plugin, your former image compression value’s there waiting for you.
  • Addressed a small issue with the “Exclude scripts from being moved to footer” display
  • Made all of the plugin’s link send to MachoTheme’s docs instead of Tiguan
  • Updated jQuery UI CSS to latest version & included the PNG sprites that come by default with jQuery UI, eliminating some back-end “asset not found” errors
  • Removed unused files
  • Added feature: “Remove Emoji scripts”
  • Added feature: “Disable XML-RPC” pings
  • Added default values. Now it’s even easier to get speed boosts without actually having to toggle stuff
  • Removed po/mo files from SBP since translations are now handled here: https://translate.wordpress.org/projects/wp-plugins/speed-booster-pack
  • jQuery will always be enqueued in the header, as a security/fallback measure.
  • Fixed the way “exclude scripts from footer” works. It’s now usable and only requires the script handle. Added backwards compat as well
  • Fixed the way script deferring works, it’s now actually usable. Introduced a filter: sbp_exclude_defer_scripts so users can exclude more than 4 scripts from being deferred
  • Rewrote the way the plugin was handling removal of query strings from assets
  • Automatically exclude certain known CSS assets from being async/minifed and/or moved from header (ex: dashicons / admin-bar)
  • Full list of changes for v3.7, here: https://github.com/MachoThemes/speed-booster-pack/milestone/1?closed=1


  • Added a section for feedback in the plugin’s dashboard


  • Changed contributors and fixed a few bugs. Plugin is now under new ownership.


  • Fix compatibility with the CrazyLazy plugin.


  • Added an option to increase your page load speed by minifying JavaScript and HTML. Removed option to remove RSD Link, since its impact on improving speed was insignificant.


  • Fix Lazy Load CSS problem.


  • Added Lazy Load feature to improve the web page loading times of your images.


  • Following requests from users, added back the option of excluding javascript elements.


  • We removed the option of excluding javascript elements as this option falls page speed score, making this plugin almost useless. Also, these options were only for advanced users, for regular users, incorrect use these options could destabilize the entire site functionality.
  • We also removed the lazy load images option because it was outdated and broken. We’ll come up with a new and updated solution soon.


  • Added a new recommended features that can make your site load faster


  • Fixed plugin options visibility issue


  • All important options switched to off by default (on first plugin activation).



  • Added option to exclude certain JS files from being moved to the footer.
  • Added option to exclude certain JS files from being defered.
  • Added a list of handles of all scripts and styles enqueued by your theme, useful for excluding options.
  • Removed FOUC option since is useless with W3 Total Cache.
  • Some visual changes on plugin options page.
  • Translation updated with the new strings.
  • Moved some admin inline scripts to js files.


  • Fixed TypeError: $ is not a function when Prevent Flash of Unstyled Content (FOUC) option is active. Thanks to @Marcio Duarte for the bug report.


  • Added option to exclude certain CSS files from being loaded asynchronously.
  • Changed the position of the styles when they are inlined to the footer (before js files).
  • Added an experimental option to eliminate flash of unstyled content (FOUC) when all CSS styles are inlined to the footer.
  • Translations updated.


  • Fixed option to disable all CSS Async features on mobile devices.
  • Fixed incompatibility with WPtouch plugin. Thanks to @DevilIce for the bug report.
  • Updated function wp_is_mobile() on lazy load images to really disabled this feature on mobile devices.


*Added an option to disable all CSS Async features on mobile devices, to avoid some appearance issues until finding a clean solution to fix it.


*Modified: amended previous except for the admin toolbar css to enqueue its stylesheets only if admin bar is showing, to not break the render blocking plugin option.


  • Fix: breaking the SEO by Yoast plugin interface (perhaps as well as to others too). Thanks to @JahLive for the bug report.
  • Added an except for the admin toolbar css since the Load CSS asynchronously option removes its dashicons and stylesheets.


  • Added option to load CSS asynchronously to render your page more quickly and get a higher score on the major speed testing services
  • Added option to inline and minify all CSS styles and move them to the header or to the footer, to eliminate external render-blocking CSS and optimize CSS delivery.
  • Added option to change the default image compression level, to help your pages load faster and keep file sizes smaller.
  • Added memory usage information and active plugins number in the plugin options page.
  • Replaced PHP version info with memory usage information (more useful).
  • Added Romanian translation and POT file. Translators are welcome!


  • Fixed Lazy Load missed js.


  • Fixed some errors and missed codes from plugin functions.


  • Added Lazy Load feature to improve the web page loading times of your images.
  • Added an option to remove all rss feed links from WP Head.
  • Added plugin options informations to the footer, visible in page source(hidden in front end), useful for debugging.


  • Added a new option to remove extra Font Awesome stylesheets added to your theme by certain plugins, if Font Awesome is already used in your theme.
  • Added a new option to remove WordPress Version Number.


  • Fixed strict standards error: redefining already defined constructor for class.


  • Modified the plugin version number variable in plugin options page.



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