Expand minified JSON into clean indentation so keys and arrays line up.
JSON tools
JSON beautifier & online formatter
Pretty-print JSON in your browser—no account, no upload.
JSON often arrives as a single unreadable line: logs, API responses, or a file someone emailed you. This page is a straight path from that mess to indented text you can actually read.
Paste on the left, hit Format, then copy from the right when it looks right. If the JSON is broken, you get an error message instead of silent nonsense.
JSON formatter workspace
Built for the moment you need structure, not a lecture.
Input
Formatted output
What you can do here
Built for the moment you need structure, not a lecture.
Spot bad JSON early—the parser complains with a plain error, not a blank panel.
Grab the formatted version in one click for tickets, docs, or chat.
Your paste stays in the tab. We are not sending it to a server to format it.
Nothing happens until you click Format, so half-finished edits do not spam errors.
How to use it
Drop your JSON into the left editor (paste from a file, log, or API response).
Press Format. The right side fills with the pretty-printed version.
Tweak the left side if needed, format again, then use Copy when you are happy.
What to expect
Formatting uses your browser’s built-in JSON support. Huge payloads can make the tab sluggish. Numbers follow normal JavaScript limits—if you rely on giant integers, double-check them elsewhere.
Quick sample
Want to try it? Paste this into the left panel and click Format:
{
"service": "my2ls",
"tool": "json-beautifier",
"tips": ["paste", "format", "copy"]
}Related pages
Quick question
Does my JSON get uploaded to your servers?
No. This formatter runs entirely in your browser. The text you paste is not sent to us for formatting.