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Custom CSS Pro

by YellowPencil · Uncategorized

Also makes 2 other plugins · 38K+ installs across the portfolio →

Professional real-time CSS editor for those who want to code CSS.

Try it live opens a temporary test site in your browser, which can take about 20 seconds to load. Plugins that rely on outside services or a full server may not work completely there.

Health

A 90/100

no flags

Active installs

7K+

≈7.5K estimated

Momentum

+26%

downloads vs prior 30d

Biggest opportunity: Add “css editor”, “pro” and “custom javascript” to your wp.org tags. You rank #8, #13 and #23 for them without listing them, close enough for a declared tag to move you up. WordPress.org counts only your first five tags, so with 4 listed these are the slots worth spending.

How scoring works →
90 Health · A
Maintenance 100/100
Rating quality 89/100
Support 70/100
Security 98/100

90 health vs 58 average across 25,734 Uncategorized plugins

Install conversion

How it's measured →

9.3%

of downloads still active

At least 7K of 75.6K lifetime downloads are still running, above its category: the median Uncategorized plugin keeps 0.6%, across 17,766 plugins.

Downloads count every update, not just first installs, so older and more frequently released plugins read lower. Compare against other Uncategorized plugins, not across the directory. wp.org reports active installs as the bottom of a band, so the real rate is this or higher.

Details

Version
1.0.8
Last updated
2mo ago
Added
2016-07-30 · 10 yrs old
Requires WP
4.0
Tested up to
7.1.4
Requires PHP
—

Directory ranking optimization

How it's scored →

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

92 / 100

Excellent listing optimization

Well tuned across the board

Update recency 100/100

Updated 69 days ago

WP compatibility 100/100

Tested up to WordPress 7.1.4, the current branch or newer

Rating quality 72/100

5.0★ over 15 reviews, smoothed to 4.31★ and held back under 25 reviews

Listing tuning 92/100

4 of 5 tags set · short description in place

Daily downloads

Since 5 Oct 2022 · 1,488 days · wp.org + Plugin Pulse archive

+26% vs prior 30d
2431 Oct 2026

30-day downloads

Rolling 30-day volume · peak 4K · peaks are release surges

83731 Oct 2026

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

Custom CSS Pro · #2646youSimple Custom CSS Pl · #359Custom CSS for WordP · #13825Simple CSS · #544

Health trend

Composite health score, snapshotted daily

9031 Oct 2026

Update activity

How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.

12031 Oct 2026

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin · 100% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v1.0 100%

Estimated active installs

The public count shows “7K+”. Our estimate pins where the real number sits.

tracked estimate
7K–8K ≈7.5K

Crossed into this band 15 months ago; a band this size takes about a year or more to cross, which places it about 50% of the way through.

Install history since 24 Dec 2016

7K31 Oct 2026

Recent reviews

All reviews on wp.org ↗
  1. ★★★★★ felixprojekt
    2.9y ago

    Thanks for making this. JavaScript support, or similar plugin for JavaScript would be amazing! I know custom JS plugins exist, but they lack the simplicity.

    Read on wp.org ↗
  2. ★★★★★ mayan62
    4.3y ago

    I searched a long time and this plugin is the best! It has a nice user interface and most important it shows CSS mistakes! I found with this Plugin why my CSS before was not working. This topic was modified 4 years ago by mayan62.

    Read on wp.org ↗
  3. ★★★★★ vmaxs
    4.7y ago

    Поменять стили настолько просто, что особо и добавить больше нечего. Особо полезен этот плагин для начинающих разработчиков.

    Read on wp.org ↗
  4. ★★★★★ rethinkable
    7.2y ago

    Just wonderful.

    Read on wp.org ↗
  5. ★★★★★ duciplandica
    7.7y ago

    Absolutely love this; one note; sometimes after saving the changes and go back to change say one character or a line, it doesn’t popular “save changes”. Maybe a small bug? In either case, I use the plug-in for every WP site I run and can’t live without it. No more going through different theme menu’s just to edit the CSS!

    Read on wp.org ↗
  6. ★★★★★ kgunn14
    8.0y ago

    This is the kind of plugin you’d easily donate $10 for because it’s so useful. Much thanks to WASP Themes (creators of the Yellow Pencil plugin) for offering such a lightweight and useful tool for nothing. If you use custom css to regularly style elements like I do, there’s nothing quite like being able to preview those live changes in the window while you code. I’ve been using this for about 16 months, I use it on over 10 different wordpress installs to cleanly and effectively make simple color changes, add padding, etc.

    Read on wp.org ↗
  7. ★★★★★ Kev5
    9.0y ago

    Can see CSS changes live!

    Read on wp.org ↗
  8. ★★★★★ realdoctorstu
    9.2y ago

    Does exactly what it says on the tin – and more. Excellent feature of being able to edit CSS and see results in realtime before saving. Fantastic time-saver – thanks to the devs!

    Read on wp.org ↗

Latest updates

via wp.org changelog

Recent releases and news for this plugin

  1. — Version 1.0.8 fixed a minor php bug. 1.0.8
  2. — Version 1.0.7 fixed a minor javascript bug. 1.0.7
  3. — Version 1.0.6 Editor loading bug fixed. Bug fixes on surfing on the website while CSS editor active. 1.0.6
  4. — Version 1.0.5 Any more you can coding while surfing on your website. CSS Editor’s core functions updated. 1.0.5
  5. — Version 1.0.4 Added nonce to saving action Sanitizing CSS data 1.0.4
  6. — Version 1.0.3 A minor bug fixed 1.0.3

Security history

via Wordfence Intelligence

The 1 disclosed vulnerability is patched in the current version (1.0.8). Sites still on an older version should update.

  1. 2019-06-24 CVE-2019-5984 Cross-Site Request Forgery Affects <= 1.0.3 Patched in 1.0.4

Vulnerability records provided by Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. License and terms.

CVE records: Copyright 1999-2026 The MITRE Corporation. CVE terms of use.

Behavioral tests

via WP Hive

Automated install-time checks, tested on PHP 8.1.12 · WP 6.8.3

✓ Low memory footprint
✓ Low page-speed impact
✓ Runs on latest PHP + WP
✓ No PHP errors
✓ No JS errors
✓ Activates cleanly
✓ No resource errors
✓ No external HTTP errors
✓ Optimized database use
✕ Frequently updated

AI assistants

How it's measured →

Whether ChatGPT and Claude name this plugin when asked the category question, and whether the readme gives them something to quote.

Not measured yet for this plugin’s topics. Its tracked searches are not among the measured topics. See the topics measured so far.

Readme readiness

1 of 8 pass · checked 28 Oct 2026

Can an assistant quote this readme? Eight deterministic checks over the wp.org listing, no model involved.

  • ! Says what it does Short description names no action; say what the plugin does for the site.
  • ! Has a FAQ No FAQ section.
  • ! FAQ asks real questions No FAQ to judge.
  • ! Names who it is for One audience phrase ("who want"); say who the plugin is for and what they use it for.
  • ! Names what it works with Names no plugin, service or platform it works with.
  • ! Headings and lists 1 heading and 1 list; assistants quote headed sections and bullet lists, not paragraphs.
  • ! Enough to quote 138 characters of description; under 1,000 there is little to quote.
  • ✓ Tags match the text 2 of 4 tags appear in the text; "custom", "custom css" do not.

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

  1. 2025-07-26 8K+ → 7K+ down after 7 days in tier
  2. 2025-07-19 7K+ → 8K+ up after 1 days in tier
  3. 2025-07-18 8K+ → 7K+ down after 4 days in tier
  4. 2025-07-14 7K+ → 8K+ up after 1 days in tier
  5. 2025-07-13 8K+ → 7K+ down after 5 days in tier
  6. 2025-07-08 7K+ → 8K+ up after 1 days in tier
  7. 2025-07-07 8K+ → 7K+ down after 338 days in tier
  8. 2024-08-03 7K+ → 8K+ up after 1 days in tier

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

Embed this report card

Drop a live Pulse card for Custom CSS Pro into a readme, a review or a deck. It updates itself.

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Preview card ↗

Custom CSS Pro: 7K+ active installs, 5.0★ (15 reviews). Plugin Pulse (WP Mayor), as of 2026-10-31. https://plugins.wpmayor.com/plugin/custom-css-pro

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