Convert tools

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.

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

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

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

FAQ

Remove JSON Array Duplicates — What are the supported inputs and limits?

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

Format references

Tool page updated: