LOCAL TOOL / JSON-DATA

JSON Validator

Paste JSON or drop a .json file to validate it locally.

Paste, type, or drag & drop a text file 19 chars · 1 lines · 19 B
Runs locally in this browserPreview updates after 320 ms · No content, filenames, or secrets are sent or saved.
About this utility

How to use JSON Validator

Check JSON syntax and summarize the root value.

What to provide

Paste JSON or drop a .json file to validate it locally.

  1. Paste, type, or drag and drop a supported text file into the input area.
  2. Review the input and the clearly labeled output behavior.
  3. Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.

What the result means

A validation report and formatted value.

Privacy and safety

This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.

Limitations

  • This checks JSON syntax, not a JSON Schema.

Try the included example

Select “Load example” at any time to restore this tested sample.

[{"id":1},{"id":2}]