Sakura - Custom JS & CSS

Name: Sakura - Custom JS & CSS
Author: Gidarai

By: Gidarai

User script manager that lets you inject your own JavaScript and CSS into websites matching URL patterns you define.

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Features & Capabilities

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.

User Growth & Download Statistics

Add-on

By:

Gidarai

Daily users:

Version:

1.0.0 Last updated: 2025-12-05

Version code:

6089462

Creation date:

2025-12-02

Risk:

Permissions:

storage
<all_urls>

Content scripts matches:

<all_urls>

Size:

2.58MB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-03

Compare stats and ranking:

Ranking

# 64,972 ▼ 386

Other rankings

#201 in custom font keyword 31 ▼ 4#202 in custom feed keyword 22 ▼ 2

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Gidarai

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/sakura-custom-js-css/

Is Sakura - Custom JS & CSS Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Sakura - Custom JS & CSS requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Sakura - Custom JS & CSS is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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