Why does my JSON fail to validate?

The most common causes are trailing commas, single quotes instead of double quotes, and comments. Standard JSON allows none of the three.

Can I paste an API response with credentials in it?

The parsing happens entirely in your browser and nothing is uploaded, so no part of the payload reaches a server.

JSON Formatter

Indent messy JSON so it can be read, minify it before sending it over the wire, or validate it and get the position of the first syntax error. The parser runs in your browser, so API payloads and tokens stay on your machine.

Indent:

Input

Output

How to use

Paste or type the JSON you want to inspect.
Choose format, minify, or validate, then run it.
Copy the result, or read the reported error position.

Frequently asked questions

Why does my JSON fail to validate?: The most common causes are trailing commas, single quotes instead of double quotes, and comments. Standard JSON allows none of the three.
Can I paste an API response with credentials in it?: The parsing happens entirely in your browser and nothing is uploaded, so no part of the payload reaches a server.

Privacy

JSON is parsed in your browser and is never sent to a server.

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