AI Search Summary
- JSON Formatter helps you work with JSON online.
- Depending on the page, you can validate, format, compare, minify, or convert JSON data.
- It is useful for API responses, configuration files, test payloads, and data cleanup.
- Do not paste secrets, tokens, or regulated data into public tools.
How It Works
- Paste your JSON into the workspace.
- If comparing two documents, separate them with a line containing ---.
- Run the tool and review the result.
- Fix the source data or copy the cleaned output when ready.
Use Cases
- Format minified JSON so it is easier to read.
- Validate API responses before sending them to another app.
- Compare JSON payloads to find changed keys.
- Convert simple JSON to YAML or XML for documentation and integrations.
Tools in this topic
What is JSON Formatter?
JSON Formatter is part of the DoubleJL JSON cluster, alongside JSON Formatter, JSON Validator, JSON Diff, JSON Compare, JSON Minify, JSON Beautify, JSON to YAML, and JSON to XML.
Common JSON Workflows
Developers often format JSON for readability, validate syntax to catch missing commas or braces, compare API responses, and convert data when another tool expects YAML or XML.
Common JSON Errors
Frequent problems include trailing commas, single quotes, unquoted keys, comments inside JSON, unbalanced braces, and copying only part of a response body.
FAQ
Is JSON Formatter free?
Yes. JSON Formatter is free and runs directly in the browser.
What is the difference between JSON Formatter and JSON Validator?
The formatter makes JSON readable. The validator confirms whether the syntax is valid and reports parsing errors when it is not.
How do I compare two JSON documents?
Paste the first JSON into the left panel, paste the second into the right panel, then run JSON Diff or JSON Compare.
Is it safe to paste JSON here?
Do not paste tokens, passwords, personal data, or regulated information into public tools unless your organization has approved that use.