Performance Tweaks


Simple but effective performance tweaks for WordPress.

Currently the plugin includes the following performance options:

  • ContactForm7 Smart Loader: Removes CSS and JavaScript from ContactForm7 on pages without a form.

  • Disable Advanced Custom Fields on Frontend: ACF or Advanced Custom Fields is a WordPress plugin to create custom Meta Boxes on your site. Most sites uses ACF to show meta boxes in the Admin area of the site and rarely use it on the front-end. Despite that, ACF loads, JS/CSS files on the front-end as well which can add more resources on the front-end of your site.

  • Emoji Unloader: Removes Emoji CSS and JavaScript from pages.

  • Defer JavaScript: Add the defer attribute to JavaScript files. The defer attribute tells the browser not to wait for the script. Instead, the browser will continue to process the HTML and build the DOM. The script loads “in the background”, and then runs when the DOM has been fully built.

  • Async JavaScript: Add the async attribute to JavaScript files. Add the async attribute to JavaScript files. Async scripts load in the background and they run immediately after they are loaded.

  • Remove Query Strings: Remove query strings from static resources. WordPress by default adds a query string to all CSS and JS files used in your site. Having this query string might make some CDNs to not cache these files.

  • DNS Single Post Prefetch: Enable DNS Prefetching on single posts, so when a user is on single post or page or any custom post type and clicks on the link for homepage then the homepage will open without any delay. Note: DNS Prefetching only works with HTTP2. So, if your server does not support HTTP2 then this will not work.

  • Disable XML-RPC: The WordPress XML-RPC is a specification that aims to standardize communications between different systems. It uses the HTTP protocol and XML as an encoding mechanism which allows for various data to be transmitted. Are you using any desktop based application to write post for your blog? If not, then its best to disable XML-RPC on your site as this can be used to do a DDOS attack on your site.

  • Disable WordPress Heartbeat: WP Heartbeat API works by calling the admin-ajax.php file and on server with low memory or shared hosting this can significantly slow down the website.

  • Limit Post Revisions: Limit the number of Post Revisions to a maximum of 5. This will help to reduce the size of the database.


Installation from within WordPress

  1. Visit Plugins > Add New.
  2. Search for Performance Tweaks.
  3. Install and activate the Performance Tweaks plugin.

Manual installation

  1. Upload the entire rh-performance folder to the /wp-content/plugins/ directory.
  2. Visit Plugins.
  3. Activate the Performance Tweaks plugin.

After activation

  1. Visit the new Settings > Performance Tweaks menu.
  2. Enable the individual modules you would like to use.


setiembre 2, 2022
This is an extremely simple plugin when it comes to setting up! It really did improve the sites I installed it on in terms of speed. The developer is very responsive to any support questions and feature requests. Best of all it's free, and there's no marketing upsell for a pro version anywhere. Highly recommended!
chulio 11, 2022
This plugin is excellent! It made my site faster and saver! Its very easy to use and great support! THNX!
Read all 2 reviews

Contributors & Developers

“Performance Tweaks” is open source software. The following people have contributed to this plugin.


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

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Interested in development?

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




Added an option to limit Post Revisions to a maximum of 5


Bug Fixes

  • The ‘defer’ tag for JavaScript is now only inserted on the frontend.