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CSS Mage > Inject Custom Styles Into Any Website, iFrames, Import/Export icon

CSS Mage > Inject Custom Styles Into Any Website, iFrames, Import/Export

Advanced custom CSS injector with persistent on-page UI.

Users2Current public install base
Rating--Store average score
Reviews0Public review volume
Manifest versionV3Extension platform version
7-day growth+1Net users gained this week
7-day growth rate+50%Relative weekly velocity
Preview

CSS Mage > Inject Custom Styles Into Any Website, iFrames, Import/Export Media preview

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User Growth Over Time

223332026年6月10日2026年6月13日2026年6月16日Latest: 2
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1-day growthFlat
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7-day growthGrowing
+1+50%
30-day growthGrowing
+3--
Technical snapshot

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Version1.0
ManifestV3
Size18.99KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

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CSS Mage is a powerful, persistent on-page CSS injector built for developers, designers, and power users. Instead of forcing you into a cramped browser popup, it provides a draggable, resizable, and encapsulated (Shadow DOM) editor that stays on the page while you work.

It is designed to be a frictionless, pixel-perfect environment for theming, debugging, or overriding web styles.

Key Features:

• Live On-Page Editor: A floating, opacity-adjustable UI that lets you see your changes instantly without obstructing your view.

• Dual Scoping: Seamlessly toggle between writing CSS strictly for the current domain or injecting global rules across all websites.

• True Editor Mechanics: Features reliable syntax highlighting, intelligent auto-formatting, robust undo/redo history, and standard keybindings (like Ctrl+/ for comments).

Reviews

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