🧾 JSON 格式化校验JSON Formatter

格式化美化、压缩 JSON，校验语法并定位错误行号，还能尝试自动修复尾随逗号等常见问题。数据不出浏览器。Pretty-print or minify JSON, validate syntax with line numbers, and auto-fix issues like trailing commas. Stays in your browser.

① 输入 JSON① Input JSON

用点号访问对象键、方括号访问数组下标，如 users[0].email；查询结果写入输出区。Use dots for object keys and brackets for array indexes, e.g. users[0].email; the result goes to the output.

② 输出② Output

③ JSON 对比③ JSON Diff

粘贴两个 JSON 对比差异：~ 修改、+ 新增、- 删除，输出带路径。Paste two JSON documents to diff them: ~ changed, + added, - removed, with paths.

📚 JSON 与 YAML 对比📚 JSON vs YAML

JSON 与 YAML 都是人类可读的序列化格式，但风格不同：JSON 必须用双引号与花括号/方括号，机器友好、无歧义、可直接 `JSON.parse`；YAML 用缩进表达层级、允许裸字符串，读起来更接近配置文件，广泛用于 CI（GitHub Actions）、K8s 与 Docker Compose。二者可以无损互转（本工具的「转为 YAML」即为此）。JSON and YAML are both human-readable serialization formats with different styles: JSON requires double quotes, braces and brackets — machine-friendly, unambiguous, directly parseable; YAML uses indentation for hierarchy and bare strings, reading more like a config file, widely used in CI (GitHub Actions), Kubernetes and Docker Compose. The two convert losslessly (that’s what “To YAML” does here).

注意：YAML 的「裸字符串」有时会被误判为布尔/数字（如 yes/on/2026-01-01），因此本工具在字符串看起来像数字或含特殊字符时自动加引号，避免语义漂移；反过来从 YAML 转 JSON 时应使用经过验证的解析器。JSONPath（本工具支持）则用于在 JSON 内部按路径取数，与格式转换互补。Note: YAML’s bare strings can be misread as booleans/numbers (e.g. yes/on/2026-01-01), so this tool auto-quotes strings that look numeric or contain special characters to avoid semantic drift; conversely use a validated parser when going from YAML to JSON. JSONPath (also supported here) locates values by path inside JSON — complementary to format conversion.

使用说明How to use

怎么用How to use
  1. 粘贴 JSON 文本Paste JSON
  2. 格式化美化、压缩、按键排序或扁平化Prettify, minify, sort keys or flatten
  3. 校验语法并定位错误行号Validate and locate errors

示例：压缩的 JSON → 缩进美化Example: Compact JSON → pretty-printed

全程在你的浏览器本地完成，文本不会上传服务器。Runs entirely in your browser; your text is never uploaded.