# Fonts Ninja - - Chrome Extension Security Audit & Unpacked ZIP Download

> **CRX8 Security Inspection & Official Download Hub**  
> **Category**: Design & Assets | **Version**: 4.2.3 | **Rating**: 4.8 / 5.0 (4500 ratings) | **Users**: 500,000+  
> **Safety Score**: 9.8 / 10 (极高 (纯前端 CSS 计算解析))  
> **Updated**: 2026年09月 | **Package Size**: 2.10 MiB  
> **Official Page**: https://crx8.com/ext/fonts-ninja

## Overview & Verified Verdict
Verified Design & Assets extension. Security Score: 9.8/10, Rating: 4.8★ (4500 reviews).

## Permissions & Manifest Security Audit
- **Security Score**: 9.8 / 10
- **Auditor Verdict**: Low risk. Full compliance with Chrome Web Store MV3 guidelines.
- **Manifest Permissions**: [{"perm":"activeTab","desc":"读取目标文字计算样式 (getComputedStyle)","risk":"功能必须"}]

## Key Features & Highlights
- 只需将鼠标悬浮在网页任意段落文字上，立刻浮现字体全称、实际字号 (Size)、行高 (Line Height) 与颜色
- 直接在当前网页预览弹窗中输入自定义中文或英文，即时预览该字体的字形展示效果
- 提供字体官网与下载渠道链接，一键将喜欢的字体收藏至个人灵感清单
- 支持一键隐藏页面其他干扰元素进入纯粹字形检视模式

## Pros & Cons
### Pros
- UI 设计极为优雅高级，符合顶尖视觉设计师的审美品味
- 识别准确率高，优先判定浏览器真实光栅化渲染的字体

### Cons
- 对于把文字做成纯静态图片或 Canvas 渲染的页面无法识别其矢量字体

## Recommended Alternatives
- WhatFont: 经典老牌字体识别扩展，样式更极简，Fonts Ninja 在试字与详情展示上更现代化

## Direct Download (Official Google Stream)
- **Native CRX Format (Official Source)**: [Download .crx](https://crx8.com/download/fonts-ninja.crx)
- **Unpacked ZIP Format (Load Unpacked)**: [Download .zip](https://crx8.com/download/fonts-ninja.zip)


## How to Install Unpacked Extension (.ZIP)
1. Download the `.zip` archive above and extract it to a local folder;
2. Open Chrome or Edge browser, navigate to `chrome://extensions`, and enable **Developer mode** in the top right;
3. Click **Load unpacked** in the top left, and select the extracted folder to run immediately.