Custom JS & CSS for Safari
Run JS, CSS & userscripts
2,99 €
Also Included In
Custom JS & CSS for Safari lets you run JavaScript, apply CSS, manage userscripts, and sync customizations across devices.
Custom JS & CSS for Safari is a powerful Safari Extension that lets you personalize the web with your own JavaScript, CSS, and userscripts. Create site-specific enhancements, visual tweaks, automations, and custom browsing tools directly in Safari.
Features:
· Add Custom JavaScript: Run your own JavaScript on any website directly in Safari.
· Add Custom CSS: Style websites with your own CSS rules and visual tweaks.
· Site-Specific Rules: Apply scripts and styles to a single domain, exact URL, all websites, or custom match patterns.
· Run Scripts Manually or Automatically: Choose whether each script runs on its own or only when you activate it.
· Userscript Manager: Import, organize, and run userscripts from popular userscript libraries like Greasy Fork.
· Popup and Custom Editor: Add or edit scripts directly from the extension popup or in a dedicated custom editor.
· iCloud Sync: Keep your scripts and styles synced across iPhone, iPad, and Mac using iCloud.
· Privacy-first design: No data collection, tracking, or logging, your browsing stays completely private.
· Multilingual support: Use the extension in multiple languages for a globally friendly experience.
· Clean, user-friendly UI: Enjoy a streamlined design that integrates smoothly into your workflow.
· Seamless Safari integration: Built to work flawlessly across Safari on macOS, iOS, and iPadOS.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Bug fixes and performance improvements.
The developer, Alfredo Grassau, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 10.5 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 10 more
- English, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- Provider
Alfredo Grassau
- Alfredo Grassau has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Copyright
- © 2026 A. Grassau
