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Pretty print any JSON string into clean, indented, human-readable output. Paste raw or compact JSON and get a nicely formatted result instantly in your browser.
Pretty printing JSON means adding whitespace, indentation, and line breaks to a compact JSON string so that human beings can read it easily. The term "pretty print" comes from the idea of making output look as it would in a well-formatted source file, rather than as a dense machine-optimised blob. In practice, pretty printing and formatting JSON are exactly the same thing — both produce indented, structured output from flat input.
When you call JSON.stringify(data, null, 2) in JavaScript, you are pretty printing JSON with 2-space indentation. When you run jq . file.json in a terminal, you are pretty printing JSON with jq's default formatting. JSON Viewer Pro's online JSON pretty printer does the same thing in your browser, with no command-line tools or dependencies required. Paste your raw JSON and get a beautifully formatted, indented result in one click.
JSON Viewer Pro's pretty printer supports 2-space, 4-space, and tab indentation so you can match whatever style guide your project follows. The output is displayed in the Monaco code editor with full syntax highlighting, and you can copy it to the clipboard or download it as a .json file. All processing happens locally — no data is sent to any server, making it safe for pretty printing JSON that contains API keys, passwords, or other sensitive values.
Pretty printing JSON means adding indentation and line breaks to make the raw JSON structure easy to read for humans.
Yes. Pretty print, format, and beautify all refer to the same operation of making JSON readable by adding whitespace.
Just paste your JSON into JSON Viewer Pro and it will instantly show a formatted, pretty-printed version.
JSON Viewer Pro — all processing runs locally in your browser. Your data is never sent to any server. Free to use, no account required.Privacy Policy·Contact