Web DevelopmentGenerated accuracy model review: 2026-05-06

JSON Formatter accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

The tool uses JavaScript's native `JSON.parse()` to validate the structure and `JSON.stringify()` to reformat it. It runs entirely in your browser—no data is sent to a server.

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

JSON Input: {"id":1,"name":"Product","features":["A","B"]}
Mode: Prettify (2 spaces)

Expected outputs

Formatted JSON: { "id": 1, "name": "Product", "features": [ "A", "B" ] }

Known limitations

This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

The input must be standard JSON, so keys and string values need double quotes and comments are not supported.
Prettify uses a fixed 2-space indentation style for readable output.
Minify removes non-essential whitespace without changing the underlying JSON data.

Unit handling

JSON Input accepts text values.
Mode accepts one of the configured options.

Rounding rules

Number displays use up to 2 decimal places in the calculator UI.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current json-formatter calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for JSON Formatter.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

Use calculator