Developer guide
How to Format JSON
Turn dense JSON into readable, consistently indented data and spot syntax mistakes faster.
Formatting JSON adds whitespace and indentation without changing the data. It makes nested structures easier to inspect and helps you find the point where malformed input begins.
Validate before formatting
A formatter must parse the input first. If it fails, inspect the reported line and column for a missing quote, comma, bracket, or invalid value.
Use consistent indentation
Two spaces is common in web projects, while some teams use four spaces or tabs. The exact width matters less than using one convention consistently across a repository.
Format for the job
Use a readable layout while debugging or reviewing changes. Minify a copy only when a system specifically benefits from removing whitespace, and keep the formatted source for maintenance.
Put it into practice
Open JSON Formatter