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Remove JSON Array Duplicates

Deduplicate JSON array items by their full structure and keep the first occurrence.

Convert in your browser · No sign-up

Object key order is ignored, array order is preserved, and the number 1 differs from the string "1".

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Result

Add your input or load an example, then run the tool. Your result will appear here.

How to use

  1. Deduplicate JSON array items by their full structure and keep the first occurrence.
  2. Choose the mode or options, then run the tool.
  3. Review the result, then copy or download the TXT file.

Example

[1,1,"1",2] → [1,"1",2]

Details and limitations

Text stays in your browser; it is not sent to a conversion server.

Format references

Tool page updated: