UtilEngine is a browser extension with a JSON formatter and the other small tools developers open ten times a day. Select some JSON, a token or a link, press your shortcut, and the right tool opens already holding it.
Get it for $49Select text in a field you can edit, run a text tool, and Shift+Enter puts the result where the selection was. Nothing to copy out or paste back.
Six tools write back. Clean Up Text, Find & Replace, Sort Lines, Deduplicate Lines, Text Case Converter and Backslash Escape/Unescape.
Each one is a command in the launcher. Type a few letters of its name, or select text first and let the launcher suggest it.
The calculator, with units and 35 currencies, sits in the same launcher. So do the rest of the 60+ commands. The diff checker, JSON to CSV and YAML to JSON also run as free tools in your browser, with no sign-in.
If you open raw API responses in a tab all day, a JSON viewer extension restyles them for you, and UtilEngine does not. Keep it. This is for the JSON that turns up everywhere else.
| A JSON viewer extension |  UtilEngine | |
|---|---|---|
| What it formats | A JSON viewer extensionThe raw JSON page a tab opens | UtilEngineJSON you select or paste, on any page |
| When it runs | A JSON viewer extensionOn its own, as the page loads | UtilEngineWhen you open the launcher |
| Output | A JSON viewer extensionA collapsible tree in the tab | UtilEngineIndented with 2 or 4 spaces, minified, or with keys sorted |
| Converting | A JSON viewer extensionUsually viewing only | UtilEngineTo YAML or CSV, and back |
| Beyond JSON | A JSON viewer extensionJSON | UtilEngineBase64, JWTs, URLs, HTML, text and images |
| Price | A JSON viewer extensionUsually free | UtilEnginePart of UtilEngine, $49 once |
These tools are one part of a launcher that also saves windows as sessions and searches your open tabs. See everything it replaces.
Select the JSON on the page, press your shortcut, and pick JSON Parser, the JSON formatter. It opens already holding what you selected. Choose 2 Spaces, 4 Spaces, Minify or Sort Keys, then copy the result. You can also open JSON Parser first and paste.
No. A JSON viewer extension restyles a raw JSON response as the tab loads, and UtilEngine does not. It formats the JSON you select or paste, wherever that is. If you open API responses in a tab all day, keep a viewer for that.
No. These tools run inside the extension in your browser. The JSON, tokens and text you give them never reach our servers.
Yes. JSON Parser accepts a trailing comma before a closing brace or bracket and formats the rest as normal.
No. It decodes the header and the payload, shows when the token expires and whether it already has, and lets you copy the signature. It does not check the signature against a key.
SHA-1, SHA-256, SHA-384 and SHA-512, all at once for the same text. MD5 is not included.
Six text tools can. Select text in a field you can edit, run Clean Up Text, Find & Replace, Sort Lines, Deduplicate Lines, Text Case Converter or Backslash Escape/Unescape, and Shift+Enter replaces your selection with the result.
Chrome, Brave, Edge, and other Chromium browsers. Firefox support is on the roadmap.
JSON, Base64, JWTs, diffs, hashes, and 60+ commands.
Get it for $49One-time payment. 14-day refund, no questions asked.
