Fast Smooth Scroll

This plugin doesn’t come with a settings screen or options of any kind. You install it, and it just works.

If the anchor scrolling doesn’t end up in exactly the right place, there is a good chance this is happening because your site uses a fixed header or another element that overlaps the main content.

For such situations, the plugin supports setting a scroll offset. You can use the filter fast_smooth_scroll_offset to set such an offset in pixels (default is 0, i.e. no offset).

For example, with the following code you would set a scroll offset of 120 pixels. This works for both the default CSS-only implementation as well as for the JavaScript polyfill.

<?php

function myplugin_get_custom_scroll_offset() {
    return 120;
}
add_filter( 'fast_smooth_scroll_offset', 'myplugin_get_custom_scroll_offset' );

Yes! For better accessibility, clients that are configured to reduce motion will not be affected by the smooth scroll behavior.

The prefers-reduced-motion media query is used to detect such a preference. Note that this only works with the CSS-only solution, as the older browsers that would require the JavaScript polyfill do not support this preference.

Since the JavaScript polyfill is only loaded when needed and is extremely lightweight, there’s probably not much value in disabling it. However, if you want to go for the purist solution of only relying on the CSS approach, you can certainly do so, using the built-in filter fast_smooth_scroll_enqueue_scripts, which defaults to true.

For example, with the following code you would ensure the JavaScript polyfill and even the simple feature detection check are never loaded:

<?php

add_filter( 'fast_smooth_scroll_enqueue_scripts', '__return_false' );

Most likely, you are using a modern browser which therefore does not trigger the JavaScript polyfill to load.

If you don’t have a legacy browser handy, you can still test the behavior: You’ll need to be logged in as an administrator, and then you can add a query parameter fast_smooth_scroll_debug_polyfill=1 to any URL. For example, in case of the home page:

https://my-site.com/?fast_smooth_scroll_debug_polyfill=1

For regular support requests, please use the wordpress.org support forums. If you have a technical issue with the plugin where you already have more insight on how to fix it, you can also open an issue on GitHub instead.

If you have ideas to improve the plugin or to solve a bug, feel free to raise an issue or submit a pull request in the GitHub repository for the plugin. Please stick to the contributing guidelines.

You can also contribute to the plugin by translating it. Simply visit translate.wordpress.org to get started.