#tutorials

Convert code between Python, JavaScript, Go, Rust, and more using AI — plus other AI-powered developer tools that save hours of work.

Spot differences between two versions of code, config files, or any text — with side-by-side highlighting that makes changes obvious.

Learn regex step by step — from matching literal text to lookaheads and capture groups — with a live tester to validate every pattern.

Stop opening Excel for basic math. Calculate percentages, convert units, and do number base conversions right in your browser.

From case conversion to word counting to string escaping — the text tools that save developers time every single day.

Master the five-field cron syntax, understand common scheduling patterns, and build or validate cron expressions with visual tools.

Convert between bytes, temperatures, lengths, and more without opening a calculator app — purpose-built tools for developer workflows.

Stop writing throwaway scripts to convert between data formats. Here's a guide to CSV, JSON, YAML, and XML — plus instant converters for each.

Learn what bloats SVG files and how to strip metadata, comments, and unnecessary attributes — cutting file size by 30-60% instantly.

Stop guessing which CSS layout system to use. Learn the clear rules for choosing between Flexbox and Grid — with visual playgrounds to practice.

Learn how QR codes work under the hood, what data they can hold, and how to generate them instantly for URLs, WiFi, and more.