JSON Formatter: instructions, examples and limits
Parses strict JSON and serializes with two-space indentation.
Open JSON FormatterThis tool is registered for local processing. Its tool input is handled in the current page; LittleKit’s product analytics do not include the input value.
What it does
Parses strict JSON and serializes with two-space indentation.
Format JSON when a compact response needs to be read, reviewed or debugged without pasting it into a hosted service.
How to use it
- 1
Paste strict JSON into the editor; keep credentials and production secrets out of shared sessions.
- 2
Run the formatter and read the error location if parsing fails.
- 3
Copy the indented result or switch to the minifier when you need a compact payload.
Worked example
{"a":1} becomes an indented object.
The example demonstrates the operation. For file-based tools, results depend on the selected file and options.How the result is produced
Parses strict JSON and serializes with two-space indentation.
Important limits
Input stays in this tab and is never sent to analytics. Limit 100,000 characters. No input is executed. JSON numbers beyond JavaScript precision may be rounded; duplicate keys keep their last value.
Checks before sharing or relying on the result
- JSON is stricter than JavaScript: comments, trailing commas and unquoted keys are rejected.
- Formatting changes whitespace, not the data model.
- The input stays in the current browser tab and is never included in analytics.
Choosing the next step
Treat these tools as a local scratchpad. Validate the format before transforming it, keep secrets out of shared screenshots and remember that a decoded token is not an authenticated token. Use the smallest input that reproduces the problem.
Related practical guides
See a mismatch between these instructions and the tool? Report a correction with a non-sensitive example.