JSON Formatter

JSON is a text format for objects, arrays, strings, and numbers. Pretty-printing adds indentation. Minifying removes whitespace. A parse error means the text is not valid JSON, often because of a trailing comma or a missing quote.

What you get from JSON Formatter is concrete. Valid JSON is indented so nested objects are readable. Minify strips the extra whitespace. Invalid JSON produces an error instead of a silent rewrite. Read those results before you paste them into a template, a file, or a ticket. A copied mistake is harder to see later than a mistake still on this page.

A careful pass on JSON Formatter looks like this. Start with real input, not a placeholder you do not understand. Paste raw or minified JSON. Then check the middle of the form, because that is where optional fields change the output. Read the indented result, or switch to minify. Finish by reading the whole result, not only the first line. If a parse error appears, fix the JSON and paste again.

The limit is the part people skip on JSON Formatter. Match the output to the input you actually typed, then decide whether it belongs on the live site. Yes. Use the minify action to strip whitespace. Minify strips the extra whitespace.

A second reading of JSON Formatter is worth it because the first pass is easy to rush. Say out loud what the output is claiming. Valid JSON is indented so nested objects are readable. Minify strips the extra whitespace. Invalid JSON produces an error instead of a silent rewrite. Then say what it is not claiming. The page shows a parsing error instead of a formatted document. Yes. Use the minify action to strip whitespace. No. It is parsed in the browser. If those two speeches disagree, change the input or pick a different tool. JSON Formatter will not resolve the disagreement for you.

Read JSON Formatter once more as a single job. Part 1: Paste raw or minified JSON. Part 2: Read the indented result, or switch to minify. Part 3: If a parse error appears, fix the JSON and paste again. You should be able to point at this in the result: Valid JSON is indented so nested objects are readable. You should be able to point at this in the result: Minify strips the extra whitespace. You should be able to point at this in the result: Invalid JSON produces an error instead of a silent rewrite. What happens if my JSON is invalid? The page shows a parsing error instead of a formatted document. Can I minify as well as pretty-print? Yes. Use the minify action to strip whitespace. Is the JSON uploaded? No. It is parsed in the browser. Who is JSON Formatter for? JSON Formatter is for someone already doing developer tools work who needs format, validate, and prettify minified JSON data. JSON is a text format for objects, arrays, strings, and numbers. Pretty-printing adds indentation. Minifying removes whitespace. A parse error means the text is not valid JSON, often because of a trailing comma or a missing quote. The first field was filled with a real value: Paste raw or minified JSON. The result was read: Valid JSON is indented so nested objects are readable. Optional fields were either filled or left empty on purpose. The copy went into the place the last step names. The boundary in the guide was respected before anything was published.

Keep JSON Formatter as this step only. When the job moves on, the JSON-LD Formatter is the next page: JSON-LD Formatter indents JSON-LD you paste and can keep the result ready to put back in a script tag. The SHA256 Generator covers a different piece of the same work: SHA256 Generator hashes text you type into a 64-character hexadecimal SHA-256 digest.