About Code Beautifier

Code Beautifier is a set of 101 developer tools for formatting, converting, and validating JSON, SQL, XML, YAML, tokens, and config files. Every tool runs inside your browser tab, so the logs, keys, and schemas you paste stay on your device.

Who builds it

The site is built and maintained by Suman Kumar, who also writes the blog posts and the error reference. More of that work is on X and GitHub.

How the tools work

Formatting, conversion, hashing, and validation all happen in local browser memory with JavaScript and the Web Crypto API. There is no server-side formatter to send your input to. The one exception is a share link: when you choose to create one, that snippet is stored for 7 days and then deleted. The privacy policy lists exactly what is collected, including the analytics services in use.

What else is here

Alongside the tools there are 15 cheat sheets, an error reference with 47 in-depth fix pages, and a blog. Each fix page names a real parser message from one of the tools and shows an input that triggers it, so you can reproduce the error on the page before applying the fix.

How the content is produced

The tool descriptions, FAQ answers, error pages and blog posts are drafted with AI assistance and edited by Suman Kumar before they are published. Every error page's example is run through the tool that reports that error, so the message on the page is the one the parser produces and the fix is checked against it. Tool and error pages show the date of their last real change. If you find a mistake, email the address below and it gets corrected.

How it is funded

Every tool is free, with no account, no paywall and no ad networks. It is built and paid for by its author. The open-source libraries it is built on are credited on the licenses page.

Is it safe to paste secrets here?

Every tool runs in your browser. Your input leaves your device only if you choose to create a share link, and tools that handle credentials don't offer one. They also skip drafts and history. To check, open DevTools, switch to the Network tab and run a tool: the usage ping sends only the tool's name.

Contact

Found a bug, a wrong answer on a fix page, or a tool that is missing? Email feedback@codebeautifier.app. To request removal of a share link, write to takedown@codebeautifier.app.