Sakura - Custom JS & CSS by Gidarai
User script manager that lets you inject your own JavaScript and CSS into websites matching URL patterns you define.
Extension Metadata
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About this extension
Sakura lets you inject your own JavaScript and CSS into any website, using rules you define.
Easily create, enable, disable, import, or export your custom scripts.
This extension operates entirely on your device.
All rules, scripts, and settings are stored locally using storage.local.
No data is sent anywhere.
Features:
• Custom JavaScript and CSS per URL pattern
• User-friendly Sakura-themed editor with CodeMirror
• Rule search, enable/disable toggles, and live updates
• Import and export rules as JSON
• No remote requests, no external servers, no telemetry
• All data stays on your device
Sakura is a local developer / power-user tool.
It does not collect, transmit, or analyze any personal data.
Easily create, enable, disable, import, or export your custom scripts.
This extension operates entirely on your device.
All rules, scripts, and settings are stored locally using storage.local.
No data is sent anywhere.
Features:
• Custom JavaScript and CSS per URL pattern
• User-friendly Sakura-themed editor with CodeMirror
• Rule search, enable/disable toggles, and live updates
• Import and export rules as JSON
• No remote requests, no external servers, no telemetry
• All data stays on your device
Sakura is a local developer / power-user tool.
It does not collect, transmit, or analyze any personal data.
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Permissions and data
Required permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Version
- 1.0.0
- Size
- 2.58 MB
- Last updated
- 14 days ago (Dec 2, 2025)
- Related Categories
- License
- MIT License
- Version History
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