Best function plugins for WordPress
The most popular function plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Remove Special Characters leads with 20+ active installs, ahead of Absolute-to-Relative URLs (10+) and Sort Page List by Last Name (10+). All 13 plugins tagged “function” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
Research this niche or see all plugins.
Top 9 function plugins
- 1.
Remove Special CharactersThe most installed function plugin, with 20+ active installs. No reviews yet, last updated 11 years ago. Tested only up to WordPress 4.0.38.
- 2.
Absolute-to-Relative URLs10+ active installs. Only 2 reviews so far, last updated 13 years ago. Tested only up to WordPress 3.4.2.
- 3.
Sort Page List by Last Name10+ active installs. No reviews yet, last updated 6 years ago. Tested only up to WordPress 5.4.25.
- 4.
WP Missing Functions Plugin10+ active installs. Only 2 reviews so far, last updated 11 years ago. Tested only up to WordPress 4.2.39.
- 5.
QuickStart10+ active installs. No reviews yet, last updated 2 years ago. Tested only up to WordPress 0.0.0.
- 6.
Safe Function Call10+ active installs. Only 1 review so far, last updated 1 year ago. Tested only up to WordPress 6.8.12.
- 7.
Really Simple Tweet10+ active installs. No reviews yet, last updated 16 years ago. Tested only up to WordPress 3.0.0.
- 8.
Show Authors in Page Lists10+ active installs. Only 1 review so far, last updated 6 years ago. Tested only up to WordPress 5.4.25.
- 9.
Find Slow Functions & Actions & Filters & Hooks (Debug Bar)Fewer than 10 active installs. Rated 3.8 from 8 reviews, last updated 2 years ago. Tested only up to WordPress 6.5.14.
All 13 plugins tagged “function”
Remove Special Characters
#26,244by CHR Designer11 years ago
This plugin will help when you add images with special characters, after activated it will remove all special characters of new images added.
- Installs
- 20+
- Rating
- –
- Downloads
- 0/day
Absolute-to-Relative URLs
Up in the last 7 days:383#29,454by Steven Vachon13 years ago
A function() for use in shortening URL links. This plugin is meant for dev work and does not automatically shorten URLs.
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 0/day
Sort Page List by Last Name
Up in the last 7 days:926#31,615by Studio Hyperset6 years ago
Sorts wp_list_pages-generated page lists by last name or, more generally, the last word of any page's title.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
WP Missing Functions Plugin
Up in the last 7 days:7,582#38,273by Mark elayan11 years ago
No need any more functions.php file editing. Just give a tick mark and this plugin will do the rest for you.
- Installs
- 10+
- Rating
- 5.0(2)
- Downloads
- 0/day
QuickStart
Down in the last 7 days:1,744#41,572by Doug Wollison2 years ago
This plugin is no longer being developed.
- Installs
- 10+
- Rating
- –
- Downloads
- 3/day
Safe Function Call
Up in the last 7 days:6,619#41,661by Scott Reilly1 year ago
Safely and easily call functions that may not be available (such as those provided by a plugin that gets deactivated)
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
Really Simple Tweet
Down in the last 7 days:7,757#43,529by roggie16 years ago
Adds simple function to send a tweet. Accepts Twitter username and password as parameters, or gets them from Twitter Tools if available.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Show Authors in Page Lists
#47,760by oqm46 years ago
Allows developers to display author names within wp_list_pages-generated page lists.
- Installs
- 10+
- Rating
- 1.0(1)
- Downloads
- 0/day
Find Slow Functions & Actions & Filters & Hooks (Debug Bar)
Down in the last 7 days:427#66,572by Puvox Software2 years ago
[ ✅ 𝐒𝐄𝐂𝐔𝐑𝐄 𝐏𝐋𝐔𝐆𝐈𝐍𝐒 b𝓎 𝒫𝓊𝓋𝑜𝓍] THE ONLY PLUGIN which finds & measures slow functions, actions, filters ...
- Installs
- <10
- Rating
- 3.8(8)
- Downloads
- 0/day