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Add Admin CSS

by Scott Reilly · Admin & Utilities

Also makes 50 other plugins · 78.1K+ installs across the portfolio →

Easily define additional CSS (inline and/or by URL) to be added to all administration pages.

How scoring works →
80 Health · B
Maintenance 76/100
Rating quality 92/100
Support 70/100

80 health vs 54 average across 3,790 Admin & Utilities plugins

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.

93 / 100

Excellent listing optimization

Well tuned across the board

Update recency 85/100
WP compatibility 100/100
Rating quality 89/100
Listing tuning 100/100

Daily downloads

Since 2022-10-05 · 1,425 days · wp.org + Plugin Pulse archive

+17% vs prior 30d
33Downloads · Aug 26

30-day downloads

Rolling 30-day volume · peaks are release surges

1.0K

now · peak 5.0K

1K30d downloads · Aug 26

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

Add Admin CSS · #1881 you WP Add Custom CSS · #669 Scripts n Styles · #1075 TJ Custom CSS · #2466

Rating trend

Star average over time · dips mark rough releases

4.9Stars · Aug 26

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.

102per 1k installs · Aug 26

Release cadence

Occasionally updated
from wp.org release tags

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

1

releases in the last 12 months

9mo ago

latest release · v2.5.1

17

tagged releases on record

Recent releases

2.5.1 · 9mo ago2.5 · 1.3y ago2.0.1 · 5.2y ago2.0 · 5.3y ago1.9.1 · 5.9y ago1.9 · 6.2y ago1.8 · 6.7y ago1.7 · 7.4y ago1.6 · 8.6y ago1.4 · 10.4y ago1.3.4 · 11.3y ago1.3.3 · 11.5y ago1.3.2 · 11.5y ago1.3.1 · 12.0y ago

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin · 50% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v2.5 50%
v2.0 30%
Older / other versions 19%

Estimated active installs

The public count shows “10K+”. Our estimate pins where the real number sits.

tracked estimate
10K–20K ≈19K

Refined from the date this plugin crossed into its current band.

Install history · since 2015-03-19 · 1,460 observations

10KInstalls · Aug 26

Estimated value

What this plugin might earn a year, and what it might sell for. Modeled from public signals; we don't see anyone's books.

Est. annual revenue

N/A

Est. acquisition value

N/A

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price.

Details

Version
2.5.1
Last updated
9mo ago
Added
2011-12-05 · 14 yrs old
Requires WP
5.5
Tested up to
6.9.7
Requires PHP

Recent review vibe

read from the latest 12 reviews to 2025-09-14
Positive PraiseOnboardingSupport gone quietCompatibility

Reviewers keep calling it simple and effective for hiding admin clutter without touching PHP files, though a couple mention support seems quiet and one hoped for a compatibility update.

Recent reviews

All reviews on wp.org ↗
  1. ellencarnahan
    12mo ago

    I really like to customize my admin experience, and installed this plugin to distinguish the icons when other plugin developers default to things like “post icon.” Seems to lack support but that is how it goes with open source plugins. Many thanks when it works 🙂

    Read on wp.org ↗
  2. mikeecho
    4.4y ago

    Awesome plugin, works fantastic Well done!

    Read on wp.org ↗
  3. ipchania
    4.4y ago

    Working great !!!

    Read on wp.org ↗
  4. Jak
    4.8y ago

    Hi, I am a beginner and have no idea about CSS coding and wondered if someone can help with providing the CSS code to replace the footer color of the website with an image, thanks.

    Read on wp.org ↗
  5. Topher
    5.2y ago

    This plugin did *exactly* what I wanted. A plugin had dropped some ad stuff into the Publish box, but it had a good CSS class, so I just hid it. I really like that the text field for holding the CSS is intelligent and does things like auto include closing brackets, code coloring, etc.

    Read on wp.org ↗
  6. strettonbull
    5.3y ago

    If you get fed up of all the nag screens from themes and plugins nagging you to “Go Pro” etc, then this is a great plugin for adding css to hide them all. Really easy to use.

    Read on wp.org ↗
  7. Hematoma
    5.4y ago

    Fantastic plugin, perfect for editing your admin panel. Not needing to deal with the hassle of php. files is great. I just hope this plugin gets an update for wordpress 5.7 soon as some things seem to not be working as they used to. Regardless, thank you so much Scott for your amazing work!

    Read on wp.org ↗
  8. WillOfTheWeb
    5.9y ago

    Great plugin and simple to use.

    Read on wp.org ↗

Latest updates

via wp.org changelog

Recent releases and news for this plugin

  1. 2025-12-02 Version 2.5.1 Highlights: A bugfix release to address the overzealous encoding of some valid CSS characters introduced in v2.5. Details: Fix: Escape only the minimum of characters so that valid CSS characters don’t get escaped. Props 2.5.1
  2. 2025-03-29 Version 2.5 Highlights: This recommended long overdue release adds a new filter for fine-grained control of whether CSS should be output or not, updates the plugin framework to the most current version (for hardening and miscellaneo 2.5
  3. 2021-05-30 Version 2.0.1 Highlights: This recommended bugfix release addresses a potential conflict with other plugins that prevented the plugin settings page main content from being displayed. Details: Change: Update plugin framework to 063 Fix 2.0.1

Known vulnerabilities

via Wordfence Intelligence

1 disclosed vulnerability on record for this plugin, fixed in the current version. Sites on older versions stay exposed until they update.

  1. 2024-07-26 CVE-2024-6547 Exposure of Sensitive Information to an Unauthorized Actor Affects <= 2.0.1 Patched in 2.5

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 6.9

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

Languages

via translate.wordpress.org

Translated into 71 languages, 2 at 90% or more

Chinese (Taiwan) 100%
Dutch (Belgium) 100%
Russian 54%
French (France) 50%
English (UK) 28%
Spanish (Spain) 24%
German 16%
Dutch 9%
English (Canada) 9%
Romanian 7%
Albanian 3%
Armenian 3%
Assamese 3%
Azerbaijani 3%
Basque 3%
Catalan 3%
Cebuano 3%
Croatian 3%
Czech 3%
Danish 3%
Dutch (Formal) 3%
English (Australia) 3%
English (New Zealand) 3%
English (South Africa) 3%

Plus 47 more locales with partial translations.

Growth timeline

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

  1. 2023-05-09 20K+ → 10K+ down after 203 days in tier
  2. 2022-10-18 10K+ → 20K+ up

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).

Compare head to head →

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Add Admin CSS: 10K+ active installs, 4.9★ (35 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/add-admin-css