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WordPress pluginwhat they say

Simple Custom CSS Plugin

Add Custom CSS to your WordPress site without any hassles.

★★★★★4.7 (159) · 100k+ active installs
Free
Website ↗ WordPress.org ↗
what mrrlens sees
MRR · No price listedNo price in the listing
Opportunity—
Buyer threads · 30 d0
“This plugin has been around for years at yet still loads CSS in the most inefficient way, serving the CSS using a dynamic non-cacheable request on every page.”
#1 complaint · Bugs/Reliability · 100% of complaints read · analysed Oct 29, 2026 · source

01Revenue

No price in the listing

2 daily snapshots · growth 30 d: —

Store data from the WordPress.org listing, refreshed daily. Updated 11 h ago. Listed since 2013.

02Why users leave Simple Custom CSS Plugin

5★90%
4★4%
3★1%
2★0%
1★5%
Bugs/Reliability5 reviews · 100%

Media view is blocked when the plugin is active.

“This plugin has been around for years at yet still loads CSS in the most inefficient way, serving the CSS using a dynamic non-cacheable request on every page.” source ↗

Sample: 5 recent complaints (1–3★ reviews) · clustered Oct 29, 2026 · complaints from Feb 2018–Jan 2026, 20% in the last 24 months — mostly history · each review labelled by a model, quotes verbatim

03How to build a better Simple Custom CSS Plugin

Build difficultyLowNo third-party APIs, payments, regulation, hardware, or network effects; main work is WordPress compatibility and cache-safe CSS output.
Three build ideas that answer these complaintsIncluded in the day pass and Pro.
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04Who wants a better Simple Custom CSS Plugin

0 buyer threads in the last 30 days name Simple Custom CSS Plugin.

05Questions about Simple Custom CSS Plugin

How much revenue does Simple Custom CSS Plugin make?

Simple Custom CSS Plugin's listing publishes no price and no paid plan, so MRRLens shows no revenue estimate. It may still charge on its own website; a founder can verify the real figure.

What do users complain about most in Simple Custom CSS Plugin?

Across 5 recent complaints, the most common is bugs/reliability (100%). Media view is blocked when the plugin is active.

What are the best Simple Custom CSS Plugin alternatives?

The closest alternative MRRLens found is WPCode. Why users leave is on the Simple Custom CSS Plugin alternatives page.

How many people use Simple Custom CSS Plugin?

Simple Custom CSS Plugin lists 100k+ active installs on WordPress.org, rated 4.7 (159).

See the full x-ray of Simple Custom CSS Plugin

Full 1-star breakdown with verbatim quotes, the build blueprint and every live thread — on every product.