Free online developer tools, AI utilities, productivity apps, tutorials, and resources — built for speed and simplicity.
Useful utilities for developers, freelancers, and businesses.
Format, validate and beautify JSON data instantly in your browser.
Use Tool →Decode and inspect JWT tokens — header, payload and signature.
Use Tool →Create professional PDF invoices online with your own branding.
Use Tool →Generate optimized prompts for ChatGPT, Claude, and Gemini.
Use Tool →Create strong, secure passwords with customizable settings.
Use Tool →Build and test regular expressions with live match highlighting.
Use Tool →Development, AI, DevOps, and cloud tutorials.