Developer Tools

User JavaScript and CSS

User JavaScript and CSS on any website

Users200K

Rating4.8

Reviews655

Manifest versionV3

7-day growth0

7-day growth rate0%

Preview

User JavaScript and CSS Media preview

4 assets

Trend

30-day user trend

Review user movement over the last 30 days.

User Growth Over Time

Rating trend

30-day rating change

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30-day rating change

Start

4.76

Latest

4.75

30-day rating change

-0.01

2026年5月31日2026年6月6日

Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthFlat

00%

7-day growthFlat

00%

30-day growthFlat

00%

Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version3.1.2

ManifestV3

Size1.72MiB

Languages2English / русский

Published--

Store updated--

Last crawled--

Overview

Product summary

Review the store description, core capabilities, and common use cases.

Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page.

Features:

- Instant execution

- Custom libs include

- URL masking allows use one script or CSS on many pages

Documentation:

Reviews

Recent review snapshot

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The Chrome Web Store shows 655 reviews, but only 0 review bodies have synced into ExtScope so far. Showing the synced reviews available right now.

5★

0

4★

0

3★

0

2★

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1★

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AI product read

Userscript and userstyle manager that injects custom JavaScript and CSS into any website

Allows developers and power users to customize website appearance and behavior by injecting custom code, without modifying the websites themselves

1. Open extension popup or options page 2. Create a new JavaScript or CSS rule 3. Define URL patterns (e.g., https://example.com/*) using wildcards 4. Write custom JavaScript or CSS/SCSS code in the built-in editor 5. Optionally add external libraries 6. Save the rule 7. Extension automatically injects code on matching pages via content scripts or userScripts API

Target users: Web developers / Frontend engineers / Power users who customize websites / Users who need custom CSS overrides / Developers testing scripts on live sites

Source code is heavily minified making exact feature identification harder
Donation link to boosty.to found but cannot confirm if any features are gated behind donation
Options UI is in large bundled file (the-options.js) making detailed feature analysis challenging

Monetization

No paid features detected

All extension features are fully available without payment. No Stripe, billing, subscription, premium tier, or feature gating detected. The 'checkout' keyword hits are false positives from Ace editor's checkOutdent() function. Optional donation link exists (boosty.to/ten_rabbits/donate) but does not gate any functionality.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension operates entirely locally using Chrome's storage API. No authentication flows, OAuth providers, account creation, or user registration found in any source files. All data (scripts, CSS rules, settings) is stored locally in the browser with no server-side user accounts.

Permission risk

Medium-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：storage、tabs、scripting
同时具备浏览数据与站点访问能力

Publisher

tenRabbits

Independent publisher

Email: [email protected]
Phone: --
Address: --

Public contact fields are shown above. Developer portfolio pages are available on paid accounts.

View developer portfolio

Permissions

Host access