Free Code Tools

Formatters and validators do the heavy lifting: the JSON Formatter pretty-prints and validates JSON, the JSON Sorter orders keys alphabetically, and dedicated validators check Python syntax and Nginx configs before they reach production. Stringify JSON and Unstringify JSON convert between raw and escaped representations in one click.

Security-minded developers get the XSS Checker for spotting cross-site scripting risks in markup. The Code Syntax Highlighter turns snippets into readable, color-coded code for docs and presentations. Everything is designed to be fast enough to keep in a pinned tab all day.

The biggest win is privacy. Pasting production code or secrets into a random website is risky, but these tools never transmit your input anywhere. The computation happens in your browser sandbox, which makes them safe for work code as well as personal projects.

The second win is speed. There is no queue, no API latency, and no account wall. Formatting a 5,000-line JSON file or validating a config takes milliseconds, and the tools work offline once loaded.

Choose the tool that matches your task, paste or type your code into the input area, and adjust any options such as indent size or validation strictness. Results appear instantly as you type or when you press the action button. Copy the output straight into your editor or terminal.

Bookmark the three you use most. Most developers reach for the JSON formatter, a validator, and an encoder every single day. Keeping them one keystroke away in your bookmarks bar removes the temptation to paste code into untrusted sites.

Validate before you deploy. Running a config or JSON payload through the validator takes five seconds and catches the syntax errors that cause failed deployments and late-night debugging.

Use the strength meter as a habit. Whenever you create credentials, generate the password here and check the crack-time estimate. Strong, unique passwords are the cheapest security upgrade you can make.