Prettify JSON

Raw JSON copied from logs, API responses or database dumps usually arrives as a single unbroken line, and finding the one value you need in thousands of characters is slow going. This formatter takes that compressed JSON and rebuilds it with consistent indentation, one property per line, so the structure becomes visible at a glance. Nested objects and arrays are indented level by level, which makes it much easier to see where a payload begins, ends and repeats.

You can choose how the output is indented: two or four spaces, or a tab character per level. Two spaces is the de facto standard for web projects and keeps deeply nested documents narrow; tabs survive round trips through editors that disagree about space counts. Paste your JSON into the input area and the formatted result appears immediately, so you can switch the indentation setting and compare outputs while you type.

A detail worth knowing: the formatter parses your input before printing it, which means it doubles as a quick sanity check. If the JSON is malformed you get a parse error pointing at the problem instead of a half-formatted document. What it will not do is change your data — key order, string values and number precision are preserved exactly as they were.

Formatting happens entirely in your browser. The JSON never leaves your machine, which matters when you are working with payloads that contain user data, tokens or anything else you would rather not paste into a web service. Large documents format instantly; for multi-megabyte inputs give the tab a moment to process.