Is this the same as a JSON formatter?
Yes. Beautifier, pretty printer, and formatter all indent valid JSON. This URL targets people searching for a beautifier.
jfmt.dev
JSON Beautifier
Paste minified JSON and pretty-print it with readable indentation. Same local engine as the homepage formatter — nothing is sent to a server.
JSON formatter
Input
Output · preview.json
{ }
Run a tool to see a polished result here
Beautify vs minify
Beautify (pretty print) adds whitespace so humans can read payloads. Minify strips that whitespace for APIs and storage. Switch tools without leaving the editor. Processing stays on this device.
Sample input on this page
The editor is prefilled with a small example for JSON Beautifier. Beautify pretty-prints JSON with indentation so humans can read it. Values do not change; only whitespace does. Replace it with your own file; the sample and your payload stay in this tab.
{
"service": "jfmt",
"enabled": true,
"nested": { "retries": 3, "tags": ["json", "local"] }
}How to use this tool
- Paste JSON into the JSON Beautifier editor. The file stays in this browser tab and is not uploaded to jfmt.dev.
- Click Run. Beautify pretty-prints JSON with indentation so humans can read it. Values do not change; only whitespace does.
- Copy the output, or continue with a related tool below. Related tools on this site include beautify, validate, minify, JSON to CSV, JSON to YAML and JSON to XML — all local.
- JFmt runs in a Web Worker in this tab. Do not paste production secrets if you share your screen.
When this page is the right choice
This dedicated JSON Beautifier URL matches that search intent; the homepage stays the general formatter. Beautify pretty-prints JSON with indentation so humans can read it. Values do not change; only whitespace does. Related tools on this site include beautify, validate, minify, JSON to CSV, JSON to YAML and JSON to XML — all local. JFmt runs in a Web Worker in this tab. Do not paste production secrets if you share your screen. Read errors in the output pane instead of sending production payloads to another service.
Related tools
FAQ
Does beautifying change values?
No. Only insignificant whitespace and indentation change.
Is my JSON uploaded?
No.
Does this tool upload my file?
No. Parsing and conversion run in a Web Worker in this tab. jfmt.dev does not receive the payload.
Why is there a separate URL from the homepage?
So people searching for this operation land on a page that already selects it. Beautify pretty-prints JSON with indentation so humans can read it. Values do not change; only whitespace does.