Why Format and Validate JSON?
Raw API responses, config files, and database exports are often single-line minified strings. Our JSON Formatter instantly structures them with indentation and reveals syntax errors with pinpoint accuracy.
1. What is the difference between beautify and minify?
Beautify adds whitespace and indentation for human readability. Minify strips all whitespace to produce the smallest possible file — ideal for production APIs.
2. Why does it show 'Invalid JSON' even though it looks correct?
JSON is stricter than JavaScript objects. Keys must be in double quotes, trailing commas are forbidden, and comments are not allowed.
3. Is JSON5 / JSONC supported?
Not currently. Standard RFC 8259 JSON only. Comments must be stripped before pasting.
4. Why would I use 4-space vs 2-space indentation?
2-space is common in the JavaScript ecosystem (npm). 4-space is popular in Python projects. Both are visually equivalent for reading.
5. Is my data safe?
All formatting is computed locally in JavaScript. Your JSON data never leaves your browser — critical for API keys and private config files.