💻 Coding Tools

Coding tools format, validate, and convert code and data formats like JSON, SQL, HTML, and XML. Pretty-print an API response, turn a timestamp into a date, or check tag pairs — handle the small everyday chores right in your browser.

What are coding tools?

While developing you constantly need to read JSON that's been collapsed onto one line, turn a Unix timestamp into a human-readable date, or reformat a messy SQL query clause by clause. The formatters, validators, and converters in this category do that with nothing to install, and the code you paste is never sent to a server — it's transformed entirely in your browser. Even sensitive config files or API responses stay on your machine.

When to use them

• Debugging API responses — use the JSON Formatter to expand a minified response, and JSON Encode/Decode for string literals
• Logs & database work — use Timestamp Converter to read Unix time, and SQL Formatter for query readability
• Front-end cleanup — format/minify HTML/JS/CSS, and tidy markup with HTML Entities and the Color Picker
• Quick validation — use the HTML5 Validator and PHP/MySQL syntax checkers to catch tag and bracket mismatches

Frequently asked questions

Is the code I paste uploaded to a server?

No. Formatting, validation and conversion all run in browser JavaScript, so your input is never transmitted.

Are the syntax checkers as accurate as a real compiler?

No. The PHP/MySQL checkers verify a practical subset — brackets, quotes and tag pairs. Use them to quickly catch major syntax errors.