Yes, Sunny is free to use. It is available as a free plugin on WordPress.org.

How many websites use Sunny?

Sunny has 100 active installations as tracked by WordPress.org.

What are the best Sunny alternatives?

Popular alternatives to Sunny include WP-Optimize – Cache, Compress images…, WP Super Cache, WP Fastest Cache – WordPress Cache…. You can compare them side-by-side on our comparison pages.

Does Sunny work with the latest WordPress?

Sunny has been tested up to WordPress 4.9.29. It requires WordPress 4.7+ and PHP 7.0.0+.

PluginSift

Sunny

Name: Sunny
Rating: 4.2 (23 reviews)
Author: Tang Rufus

Automatically purge Cloudflare cache, including cache everything rules.

By Tang Rufus·Cache·Free

4.2(23 reviews)

·100 active installs·Updated 8 years ago

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As of April 2026, Sunny is a WordPress cache plugin with 100 active installations and a 4.2/5 rating from 23 reviews. It has been downloaded 31K+ times in total. Requires WordPress 4.7+ and PHP 7.0.0+. Available on WordPress.org since 2014. Last updated 8 years ago — may have compatibility concerns. Top alternative: WP-Optimize – Cache, Compress images….

4.2/523 reviews

100active installs

31K+total downloads

12 yearssince 2014

Overview

Automatically purge Cloudflare cache, including cache everything rules.

Warning!!!

This plugin is not for normal users! Read the whole readme and FAQ before installing.

Cloudflare cache everything rules breaks most WordPress dynamic functionalities:

WordPress Nonces will be cached
Forms must be loaded via AJAX unless you’re using the USD$ 200 Cloudflare plan. Learn more

Sunny shows a few admin notices in WP admin dashboard promoting the author’s web development services every 2 weeks.They are dismissible via the X button on the right corner. See faq for more info.This is a free plugin, free as in free of charge and in freedom. You can always remove those notices without breaking other parts of Sunny.

The next major release of Sunny(v3.0.0) will require: