Password Strength
Estimate password strength with zxcvbn locally
Interactive controls load with JavaScript. Processing stays in your browser.
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How to use
- 输入待测密码，可选填写用户相关词（姓名、站点等）。
- 首次使用懒加载 zxcvbn 词库，之后本地评分。
- 查看分数、估计破解时间与改进建议。
- 密码不会上传或保存；需要新密码请用密码生成器。
FAQ
Does Password Strength upload my data?
No. Password Strength runs locally in your browser and does not upload content to www.518882.com or third-party APIs.
Do I need an account?
No. Open and use — no signup, login, or paywall. Open Password Strength and use it — no signup, login, or paywall.
How is this different from upload-based tools?
Tools run locally in your browser; content is not sent to our servers for processing — suited to private text and drafts.
Are there limits?
Limited by device memory and the browser; very large inputs may slow the page. There is no account quota.