Format and validate JSON.

Minified JSON is fine for machines and miserable for humans. The formatter above re-indents it into something readable, and when the JSON is broken it reports the parse error with the line number where the syntax gives out. All of that happens in the page you are already on, so nothing is uploaded and nothing is logged.

Once your JSON is clean, you can inspect a JSON file online to read through it. The viewer gives you expandable nodes rather than one long wall of text, which helps when an object runs to hundreds of lines. If you need to hand the file to a teammate, you can share a JSON file as a link instead of pasting all of it into chat.

Formatting JSON is rarely the only thing you're doing. You'll often need to encode or decode Base64, URL-encode a string, or decode a JWT in the same session, and NudgeHost's browser-based dev tools are collected on one page.

Every tool on the site is free and needs no signup. The paid side of NudgeHost is hosting and sharing rather than the tools, and you can drop a file to get started whenever a formatted file needs to go to someone.