SerHTML - HTML Compiler

Write, Edit, and Run HTML, CSS, and JavaScript Code Instantly

Our online HTML editor lets you write code and see your designs update in real time. You can structure your markup, style it with CSS, and add interactivity with JavaScript - all in one workspace. It runs entirely in your browser, with no setup needed. It's great for prototyping layouts, debugging scripts, or practicing responsive design.

Complete Front-End Environment

The workspace is fully equipped to handle modern web standards — no local servers or installations needed:

  • Structure & Semantics: HTML5 — full support for modern tags, SVG graphics, forms, and responsive media.
  • Styling & Layout: CSS3 — advanced layouts with Flexbox and CSS Grid, keyframe animations, and media queries.
  • Interactivity & Logic: Modern JavaScript — ES6+ syntax, DOM manipulation, Fetch API, and async/await.
  • Integrated Debugging: A built-in console captures your output, so you can view console.log messages and errors directly inside the editor.
  • External Assets: Full support for third-party libraries like React, Bootstrap, or Tailwind via CDN, plus Google Fonts and external stylesheets.

HTML Playground Directly in Your Browser

Why use a single text box when you can have a full workspace? Our platform gives you professional tools to write, organize, and share your code with ease.

Collaboration & Export

  • 1-Click Workspace Sharing: Work with others instantly. Generate a unique link to your live workspace, and anyone can load your exact files, folders, and code in one click.
  • Full Project Export (.zip): Download your entire project — including all nested folders and assets — as a .zip file anytime you want.

Complete Virtual Workspace

  • Drag-and-Drop File System: Build real projects with nested folders, drag files to reorganize them, and manage your directory just like a desktop editor.
  • Global Workspace Search: Find any text, variable, or function across your whole project fast, thanks to a built-in debounced search tool.
  • Asset Uploading: Upload local files, CSVs, or images directly into the browser environment to test your scripts with real data.

Professional Code Editor

  • Smart Autocompletion: Write code faster and make fewer errors with live, context-aware autocompletion and clear syntax highlighting.
  • Multi-Tab Support: Open several files at once and switch between scripts, modules, and stylesheets easily using the top tab bar.
  • Command Palette: Press F1 to open the command palette and access powerful editor tools right away.
  • Persistent Session Memory: The editor saves your undo/redo history and cursor positions for every open file, so you never lose your place.

Customization & Accessibility

  • Customizable UI: Adjust the layout to fit your workflow with resizable split-panes, flexible font sizes, and built-in Dark/Light mode.
  • Mobile-Optimized Experience: Code on any device. The dedicated mobile interface uses clean bottom-tab navigation, so you can write code and view the console comfortably on the go.