Text & Code
Random String Generator
Generate cryptographically random strings with strength meter, batch generation, and character set controls.
Your files stay on your device - processed locally via WebAssembly, never uploaded
Mode
Character Sets
Strings are generated using your browser's crypto.getRandomValues() cryptographic random number generator. Nothing is sent to any server.
🔒 All generation happens in your browser. Nothing is sent anywhere.
Embed this tool on your website
Copy this code to add the Random String Generator to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/random-string-generator" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Random String Generator by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/random-string-generator">OptiPix Random String Generator</a></p>
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About Random String Generator
Last updated: May 2026
OptiPix 随机字符串生成器使用您浏览器的 crypto.getRandomValues() API 创建加密安全的随机字符串。使用滑块将长度从 4 调整到 128 个字符。切换字符集：大写 (A-Z)、小写 (a-z)、数字 (0-9) 和符号。排除易混淆字符 (0/O, 1/l/I) 以提高可读性。基于熵的强度计将字符串评为从弱到非常强。使用辅音-元音模式生成可发音的字符串以便于记忆，或切换到密码短语模式以生成 4-8 个用连字符分隔的随机单词。一次最多可批量生成 20 个字符串。一次复制单个字符串或所有字符串。每次页面加载都会自动生成一个新字符串。所有操作都在本地进行 - 没有任何内容发送到任何服务器。
How It Works
该工具根据您选择的切换项构建字符集，使用 crypto.getRandomValues() 生成所需长度的 Uint32Array，然后使用模运算将每个随机数映射到字符。强度根据香农熵计算：bits = length × log₂(charsetSize)。
Use Cases
- •为开发人员测试和 API 密钥生成随机字符串
- •为身份验证系统创建安全令牌
- •为数据库加盐生成随机标识符
- •为配置机密创建强大、唯一的字符串
- •生成易于记忆的密码短语
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If you find Random String Generator useful, check out these related tools: UUID Generator, Hash Generator, and Base64 Text Encoder / Decoder. All tools run entirely in your browser with no uploads or signups required.
Explore more: Browse all tools · Step-by-step guides · Tips & tutorials · Compare tools
Frequently Asked Questions
字符串是如何生成的？
强度计基于什么？
什么是密码短语模式？
我可以一次生成多个字符串吗？
有什么内容会被发送到服务器吗？
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