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Screenshots

  • Custom JS & CSS for Safari screenshot 1
  • Custom JS & CSS for Safari screenshot 2
  • Custom JS & CSS for Safari screenshot 3
  • Custom JS & CSS for Safari screenshot 4

About Custom JS & CSS for Safari

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.

What’s new

Version 1.0.7 · Updated September 30, 2026

Bug fixes and performance improvements.

App privacy

The developer, Alfredo Grassau, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

Alternatives to Custom JS & CSS for Safari

Looking for apps like Custom JS & CSS for Safari? Here are 6 similar apps on the App Store. The highest rated is Simple cURL (3.0/5).

Custom JS & CSS for Safari vs. alternatives
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