JSON Formatter
Format, validate and minify JSON — everything runs in your browser.
{
"name": "DNS Blade",
"tools": 36,
"features": [
"dns",
"seo",
"utils"
]
}About the JSON Formatter
The JSON Formatter pretty-prints, validates and minifies JSON documents. Paste a compact or malformed JSON blob and get a syntax-highlighted, indented view in one click — with clear error messages pointing at the exact line and column of any parse errors. Handles nested objects, arrays, numbers, booleans, null and Unicode strings correctly per the ECMA-404 spec.
Developers use JSON formatters dozens of times a day — inspecting API responses, debugging log entries, editing configuration files, reviewing webhook payloads, and comparing two versions of a document. This tool runs entirely in your browser, so sensitive JSON never leaves your device (unlike many web-based formatters that upload to a server).
Beyond formatting, the tool provides minification (strip whitespace to save bytes for production configs and API payloads), validation (catch trailing commas and unquoted keys before shipping code that depends on them), and structural search — perfect for large JSON documents where you need to find a specific key or value.
How to use this tool
- 1Enter the required value in the input field above (domain, IP, URL, or text depending on the tool).
- 2Click the action button to run the check — results are computed instantly from our edge network.
- 3Review the parsed output, key fields and any warnings shown in the result card.
- 4Copy the result, share the page URL, or jump to a related tool from the sidebar to continue debugging.
Key features
- Pretty-print with configurable indent
- Minify for production payloads
- Precise error location on invalid JSON
- Runs in-browser — data never leaves your device