⇄ JSON ↔ YAML ↔ XML ↔ CSV Converter
Convert JSON to YAML and YAML to JSON instantly with syntax validation. Handles nested structures and arrays. Free online JSON ↔ YAML converter — no signup, browser-based.
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How to Use
1
Paste your data
Paste your JSON, YAML, XML, or CSV content into the input area and select the source format.
2
Choose target format
Select the output format from the To dropdown. All bidirectional conversions are supported.
3
Convert and copy
Click Convert. The result appears on the right. Click Copy to use it in your project.
Frequently Asked Questions
What is the difference between JSON, YAML, XML, and CSV?
JSON is a compact data format widely used in APIs. YAML is a human-readable superset of JSON often used for config files (Kubernetes, GitHub Actions). XML is a verbose tag-based format used in enterprise systems and RSS feeds. CSV is a flat table format for spreadsheet data.
Can I convert complex nested JSON to CSV?
CSV supports only flat (non-nested) data. When converting nested JSON to CSV, only the top-level keys become columns. Nested objects are serialized as JSON strings within their cell.
Why does my YAML not convert to JSON?
Common issues: using tabs for indentation (YAML requires spaces), missing colons after keys, or using special characters without quotes. The error message will point to the problematic line.
Is there a data size limit?
There is no hard limit, but very large files (over 5MB) may be slow since all processing runs in your browser. For production data transformation, a server-side tool is recommended.
Is my data sent to a server?
No. All conversion runs entirely in your browser using JavaScript. Your data never leaves your device.
完整指南：JSON ↔ YAML转换工具
何时用JSON，何时用YAML？
YAML因可读性而受配置文件青睐：CI/CD（GitHub Actions、GitLab CI）、Kubernetes、Docker Compose。JSON是API和序列化数据的标准。此工具实现两者间的双向转换。
如何使用
- 粘贴JSON或YAML到输入面板。
- 选择转换方向。
- 复制结果。
专业技巧
- YAML对缩进敏感——混用Tab和空格会导致神秘错误。
- 含
:、#或以-开头的字符串在YAML中需加引号。 - 手动编辑后用验证器检查——YAML语法错误难以发现。