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Tom Utilities

JSON 展平与还原

JSON 工具

将嵌套 JSON 转换为点号键,并从扁平数据重建嵌套对象。

输入

结果

使用方法

Flatten nested JSON

Paste nested JSON and run Flatten. Arrays become numeric keys, for example user.roles.0.

  1. Paste nested JSON.
  2. Click Flatten.
  3. Copy the flat JSON output.

Unflatten key paths

Paste a flat object and run Unflatten. Numeric path segments are converted back into arrays automatically.

常见问题

How are arrays represented?

By default each array element gets a numeric segment, such as items.0.name. Empty arrays and objects are preserved as values.

Can I use a different separator?

The UI uses a dot separator. For custom separators, use the underlying library behavior in your own code.