WP Theme Checker
← all plugins

Simple Custom CSS and JS

slug: custom-css-js

WordPress plugin by SilkyPress · detected on 27 sites in our index (0.51% of WordPress sites scanned)

Easily add Custom CSS or JS to your website with an awesome editor.

27
Sites detected
0.51%
Market share
of our WP index
#319
Rank
among indexed plugins
2026-05-22
Last detected

Where Simple Custom CSS and JS sits in the WordPress plugin ecosystem

Simple Custom CSS and JS is the #319 most-detected WordPress plugin in our scan index of 5,328 sites — appearing on roughly 0.51% of WordPress sites we've fingerprinted. Most sites running Simple Custom CSS and JS are hosted on Pantheon (67% of identified hosts). The most common companion plugin is Yoast SEO – Advanced SEO with real-time guidance and built-in AI, present on 59% of Simple Custom CSS and JS sites. The most frequent theme is Ars Electronica Wordpress Theme.

Every data point here comes from actual scans of public WordPress sites — not vendor case studies or curated showcases. We don't accept submissions; everything you see is detected automatically when a site is scanned through the tool.

Plugins commonly used with Simple Custom CSS and JS

From co-occurrence analysis across sites running Simple Custom CSS and JS in our index.

Themes commonly running Simple Custom CSS and JS

Top themes on sites using this plugin.

  • Ars Electronica Wordpress Theme4% of Simple Custom CSS and JS sites · 1 site
  • astra4% of Simple Custom CSS and JS sites · 1 site
  • avantis4% of Simple Custom CSS and JS sites · 1 site
  • Blocksy4% of Simple Custom CSS and JS sites · 1 site
  • bradley4% of Simple Custom CSS and JS sites · 1 site
  • Bugcrowd4% of Simple Custom CSS and JS sites · 1 site

Hosting providers running Simple Custom CSS and JS

Limited to sites where we identified the hosting provider.

Sites using Simple Custom CSS and JS

Most-recently-scanned sites detected with this plugin.

  • ruvds.comManual RuVDS Child Theme · host unknown · scanned 2026-05-22
  • macalester.eduMacalester 2020 Child Theme · host unknown · scanned 2026-05-22
  • melbourneit.auWebcentral · host unknown · scanned 2026-05-22
  • hostingplus.clRoots Starter Theme · host unknown · scanned 2026-05-22
  • strongvpn.comastra · host unknown · scanned 2026-05-22
  • mindtickle.comtheme unknown · host unknown · scanned 2026-05-22
  • koala-apps.ioHello Elementor · host unknown · scanned 2026-05-22
  • kprofiles.comherald · host unknown · scanned 2026-05-22
  • clashfeiji.comdux · host unknown · scanned 2026-05-22
  • ars.electronica.artArs Electronica Wordpress Theme · host unknown · scanned 2026-05-22
  • spectator.orgAmerican Specator · host unknown · scanned 2026-05-22
  • facts.netNewsAnchor · host unknown · scanned 2026-05-22

How we detect Simple Custom CSS and JS

Five-vector detection — /wp-content/plugins/custom-css-js/ asset paths, /wp-json/ REST API namespaces, HTML signature patterns, sitemap XML comments, and asset-probe HEAD requests against the top-100 popular plugins on wordpress.org. Each detected plugin carries provenance pills showing which sources corroborated it — cross-vector matches indicate high-confidence detections. More on how detection works.

Reviewed by Matt Hall · founder of Scepter Marketing · 10+ years building WordPress sites
·
Last reviewed: 2026-05-22
·How we detect this →

Data comes from real-time scans of public WordPress sites — not vendor case studies or curated showcases. Every claim on this page traces back to a specific detection in our scan corpus, observable via our methodology. Affiliate links are disclosed per the affiliate disclosure.