JSON Minify & Beautify
Minify or beautify JSON.
Minify or beautify JSON.
How to use JSON Minify & Beautify
- Paste your JSON into the input box
- Choose Minify to compact it or Beautify to indent it
- Copy the reformatted JSON from the output
About JSON Minify & Beautify
Paste JSON and switch it between two shapes: squeezed onto a single compact line, or beautified with clean, consistent indentation you can actually read. Minifying is handy for shrinking a payload before you send or store it; beautifying turns a dense, minified blob back into something legible, so deeply nested objects and arrays read almost like a formatted tree or HTML view. It works the same whether you paste an API response, a config snippet, or the contents of a .json file.
Because it only formats well-formed JSON, it doubles as a quick checker. A missing bracket, a stray comma, or an unquoted key stops the formatting and shows you where the JSON breaks, so you can tell whether a payload is valid before you rely on it. There is nothing to install and no Chrome extension to add — it runs in an ordinary browser tab, so you can format, minify, and check JSON from any device.
The formatting runs entirely in your browser, which means the JSON you paste stays on your own machine and is never uploaded to a server. That matters when a payload holds keys, tokens, or customer data you would rather not send anywhere. It is free, needs no account, and puts no limit on how much you convert.
Frequently asked questions
- Is it free, and do I need to sign up?
- It is free with no sign-up and no account. You can minify and beautify as much JSON as you want, with no usage limits and nothing to install.
- Does my JSON get uploaded to a server?
- No. Everything happens in your browser, so the JSON you paste never leaves your device. That is useful when a payload contains keys, tokens, or data you would rather not send anywhere.
- How do I use it?
- Paste your JSON into the box and choose minify to collapse it onto one line, or beautify to expand it with indentation. You can then copy the result straight out.
- What is the difference between minify and beautify?
- Minify removes every space, line break, and indent to give you the smallest single-line version of your JSON. Beautify does the opposite, adding indentation and line breaks so the structure is easy to read. The underlying data is identical either way.
- What does minifying actually remove?
- Minifying strips the spaces, line breaks, and indentation between the data, leaving the JSON on a single line. The data itself is untouched; it is the same JSON, just without the whitespace that makes it larger.
- Can it validate my JSON or check it for errors?
- Yes, in effect. Because it only formats valid JSON, running your text through it acts as a check: if it formats cleanly the JSON is well-formed, and if it stops, the error points to where the problem is. It flags invalid JSON rather than repairing it.
- What if my JSON has an error in it?
- The tool works on valid JSON, so a missing bracket, a stray comma, or an unquoted key will stop it from formatting until that is fixed. It is a formatter and checker, not a repair tool that guesses at what broken JSON was meant to be.
- Is this a Chrome extension or plugin?
- No, and you do not need one. It is a web page that opens in any browser — Chrome, Edge, Firefox, or Safari — so there is no extension or plugin to add. Just open the tab and paste your JSON.
- Can I format a .json file with it?
- Yes. Open the file, copy its contents, and paste them into the box. The tool formats whatever text you paste, so the contents of a .json file are handled exactly like any pasted snippet.
- Can it show my JSON as a readable tree or HTML view?
- Beautify gives you indented output with keys and values laid out clearly, which makes nested structures easy to scan. It formats as indented text rather than a collapsible HTML tree, but the indentation serves the same purpose of making the structure obvious.
- Can it convert CSV to JSON?
- No. This tool only reformats JSON between its minified and beautified forms; it does not convert other formats like CSV or XML into JSON. For that you would need a dedicated CSV-to-JSON converter.
- How do I get my JSON onto a single line?
- Paste it and choose minify. The tool removes every line break and gap between values and returns your JSON as one continuous line you can copy, which is the smallest form of the same data.