ATRX Dev Tools
A collection of handy developer tools and articles — fast, free, and right in your browser.
Tools
Browser-based utilities to speed up your workflow
API Request Tester
Test API endpoints in your browser by sending HTTP requests, customizing headers and bodies, and inspecting status codes, timing, and responses.
Open tool →Base64 Encode / Decode
Encode text to Base64 or decode Base64 strings instantly in your browser for debugging, data transfer, integrations, and web development tasks.
Open tool →BMI Calculator
Calculate body mass index from your height and weight with a fast online BMI calculator for quick health check-ins and progress tracking.
Open tool →Color Converter
Convert HEX, RGB, and HSL color values instantly in your browser for CSS styling, design systems, and frontend development work.
Open tool →Compound Interest Calculator
Calculate compound interest growth for savings and investments with contributions, compounding frequency, and year-by-year projections.
Open tool →Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly in your browser for verification, testing, and development work.
Open tool →Articles
Guides, tips, and insights for developers
Breakthrough AI Hardware: How SK Hynix & Intel Are Redefining Memory Packaging
How SK Hynix's adoption of Intel EMIB packaging could lower costs, expand HBM4 bandwidth, and diversify the AI hardware supply chain.
Read more →How QR Codes Work: Encoding, Error Correction, and Everything They Can Do
Learn how QR codes encode and recover data, what every pattern does, their capacity and payload types, and how to create reliable, secure codes.
Read more →Best AI Tools in 2026: Practical Picks by Category
A practical, up-to-date guide to the best AI tools for research, writing, coding, images, video, audio, automation, machine learning, education, and science.
Read more →Base64 Explained: What It Is, How It Works & Real-World Uses
Learn what Base64 encoding is, how its 6-bit mapping and padding work, where it is used, and why it should not be mistaken for encryption.
Read more →Why You Should Never Reuse Passwords Across Websites
Learn why reusing the same password across multiple sites is dangerous and how one breach can put many of your accounts at risk.
Read more →Why Secure Passwords Are Essential for Protecting Your Online Accounts
Learn why strong passwords matter, what makes a password secure, and how to protect your accounts from common attacks.
Read more →