Is YAML Validator free to use?

Yes, YAML Validator is completely free. No registration, no account, and no hidden costs — ever.

Is my data safe when using YAML Validator?

All processing happens directly in your browser. Your data never leaves your device — nothing is uploaded or stored on our servers.

No. All CheckTown tools work instantly without registration or sign-up.

YAML Validator works on any device — desktop, tablet, or phone. The interface adapts to your screen size.

校验 YAML 语法，提供行级错误提示、美化输出和关键统计信息。

在上方粘贴 YAML 并点击“校验”

检查语法并显示带统计信息的美化输出

Ctrl+Enter 运行Ctrl+Shift+C 复制

验证 YAML 配置文件中的语法错误、重复键名和缩进问题，并精确报告错误。

什么是 YAML，以及为何要校验它

YAML 的全称是 YAML Ain't Markup Language，是一种对人类友好的数据序列化格式，被广泛用于配置文件、CI/CD 流水线、基础设施即代码和数据交换。它基于缩进的语法使其易于阅读，但也让它对肉眼难以察觉的空白字符错误极为敏感。