Live Code Playground
Right in Your Browser
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Code Tester
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About Multi-Language Code Tester
Multi-Language Code Tester is a powerful, in-browser development playground that lets you write, test, and preview code in multiple languages —
all in real-time. Whether you’re a beginner learning how code works, or a developer quickly prototyping ideas, this tool provides a streamlined environment
for coding in:
Supports HTML
Build the structure of your web pages using clean and semantic HTML. Create headings, forms, images, buttons, and more with instant preview as you type.
Supports Javascript
Add powerful interactivity with JavaScript. Handle events, manipulate DOM elements, and build dynamic features — all tested live in the browser.
Supports CSS
Style your code beautifully with full CSS support. From layouts and colors to animations and responsive designs, customize every element in real-time.
CODE.SHARE.LEARN
Save
Easily save your code snippets to your account and revisit them anytime. Keep your experiments organized in one place.
Load
Quickly load any of your saved projects or starter templates with a single click. Jump back into your work instantly.
Fullscreen
Expand the editor to fullscreen for distraction-free coding. Focus on your code with maximum screen space.
Responsive Mode
Easily save your code snippets to your account and revisit them anytime. Keep your experiments organized in one place.
Console Popup
View your JavaScript output and errors in a real-time console popup. Debug your code without leaving the page.
Download as ZIP
Download your full project (HTML, CSS, JS) in a ready-to-use .zip file. Great for offline editing or deployment.
FAQ
What types of code can I test here?
You can write and test HTML, CSS, and JavaScript in real time. The tool renders your code instantly in the live preview area, making it perfect for learning, experimenting, or prototyping.
Do I need an account to use the tool?
No account is required to start coding. However, creating a free account allows you to save your code, fork others’ pens, and access your saved pens anytime.
Can I save or download my code?
Yes! You can save your code as a single HTML file or download all components as a .zip file. This lets you reuse or share your work easily offline.
Does it support JavaScript console logs?
Yes, the tool comes with a built-in console popup where you can see console.log(), warnings, and errors from your JavaScript code just like in a browser’s dev tools.
Is the output mobile responsive?
Yes! The tool includes a responsive mode that lets you preview your code on different screen sizes like desktop, tablet, and mobile. Perfect for testing responsive designs.