JSON formatting at a glance
JavaScript Object Notation has become the universal language of APIs, configuration files, and inter-service communication. It is easy for machines to parse and reasonably readable by humans — but only when it is well-indented. A minified payload returned by a REST API or written to a log file is a wall of text, and a single missing comma or unbalanced bracket can take minutes to find by eye.
A formatter solves that. Paste raw JSON and the tool re-emits it with consistent indentation, sorted bracket alignment, and a structure that makes nesting obvious. Errors are highlighted with the exact line and column number so you can spot the problem at a glance.
Features
- Beautify mode with configurable indentation: two spaces, four spaces, or tab characters.
- Minify mode that strips all whitespace for production payloads.
- Strict validation against the JSON specification with line and column error reporting.
- Copy-to-clipboard and download buttons for the formatted result.
- Works on any modern browser — desktop or mobile.
Common use cases
Developers reach for a JSON formatter dozens of times a day: inspecting an API response, debugging a webhook payload, prettifying a configuration file before checking it into version control, comparing two JSON documents side by side, or pasting a JWT body to read the claims. Marketers and analysts use it to inspect product feeds, Schema.org markup, and structured data returned by SEO tools.
Because the parser runs locally via the browser native JSON.parse, the tool handles JSON of any practical size — from a one-line API response to a multi-megabyte data dump — without ever transmitting it to a server.