Free Code Playground - Online HTML/CSS/JS Editor Online
A lightweight, instant sandbox for web development. Write HTML, CSS, and JavaScript and see your changes in real-time.
Quick Navigation
Jump to specific sections of the Code Playground - Online HTML/CSS/JS Editor guide.
Key Features
Powerful capabilities of our code playground - online html/css/js editor.
Live Preview
Instant results in a secure sandboxed iframe.
Multi-Pane Layout
Split view for HTML, CSS, and JavaScript.
Auto-Run
Code executes automatically as you type (can be toggled).
No Setup
Start coding immediately without installing anything.
Privacy First
All your code stays in your browser.
How to use Code Playground - Online HTML/CSS/JS Editor
Write Code
Enter HTML, CSS, and JS in the respective editors.
View Result
See the output instantly in the preview pane.
Change Layout
Toggle between Split and Stacked views for your preference.
Run Manually
Disable auto-run if you want to trigger execution manually.
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Frequently Asked Questions about Code Playground - Online HTML/CSS/JS Editor
Can I use external libraries?
Yes, you can include them via <script> tags in the HTML editor.
Is my code saved?
Currently, it is not persisted after page reload (coming soon).
Why use Toolboxed.online?
Toolboxed is a curated suite of high-performance utility tools designed for modern professionals. Unlike other tool sites, we prioritize privacy, speed, and zero distractions. None of your data ever leaves your browser, and we never show annoying ads.