Tips, tutorials and guides about our tools
Learn what JSON is, how to format it for readability, validate it for errors, and minify it for production. A practical guide for developers.
Learn what Unix timestamps are, why they matter in programming, and how to convert between timestamps and human-readable dates.
A full walkthrough of CafeResto — manage tables, order queues, products, payment methods, cancellations, and sales reports right in your browser with no setup required.
Learn the ideal image dimensions for websites, social media platforms, and email. Practical tips to resize images without losing quality.
Learn how the Pomodoro technique works, why it's effective, and how to use a timer to boost your productivity and avoid burnout.
Learn how to combine multiple PDF files into one document directly in your browser. No installation, no uploads, completely free and private.
Learn the difference between HEX, RGB, and HSL color formats, how to convert between them manually, and when to use each format in design and development.
A practical guide to Base64 encoding: how it works, why it exists, and the most common use cases in web development and data transmission.
Learn how AI-powered background removal works, when to use it, and how to get clean transparent results without expensive software.
Learn what makes a password truly secure, the most common mistakes people make, and practical techniques to create and manage strong passwords.
Learn how QR codes work, what types exist, and how to create your own QR codes for URLs, WiFi, contacts, and more — for free.
Discover the best techniques to reduce image file sizes while keeping them sharp. Learn about formats, quality settings, and when to use WebP.
Learn what Body Mass Index (BMI) is, how to calculate it, what the categories mean, and why it matters for your health.