Free Online Developer Tools
A curated collection of fast, free online developer tools by MaxonCodes. Use these tools to write, test, format, convert and understand code. Learn faster with practical developer cheat sheets and follow clear learning roadmaps to grow your skills step by step. No signup required.
HTML & CSS Compiler Online
Run HTML, CSS and JavaScript code online with live preview.
Code Formatter
Automatically format and beautify HTML, CSS, JavaScript and JSON code.
HTML Parser
Parse HTML code into clean, readable and structured text.
CSS Minifier
Minify and compress CSS files to improve website performance.
JSON Viewer
View, format and validate JSON data online.
Regex Tester
Test regular expressions online with instant results.
AI Code Explainer
Explain JavaScript, Python and Java code line by line.
Password Generator
Generate strong and secure passwords instantly.
Markdown to HTML Converter
Convert Markdown text into clean HTML instantly.
QR Code Generator
Create QR codes for URLs, text and custom data.
Are MaxonCodes developer tools free?
Yes. All developer tools on MaxonCodes are completely free to use.
Do I need to sign up?
No. You can use all tools without creating an account.
Is my code stored on your servers?
No. Your code is processed in your browser and never stored.
Who are these tools for?
These tools are built for developers, programmers, students and learners.