SideCanvas

HTML/CSS/JS editor with live preview - A MikesTools.io project

Stop switching between browser tabs and code editors. SideCanvas lets you test HTML, CSS, and JavaScript instantly in Chrome's side panel - right next to your AI chat, tutorial, or documentation. Built for developers, students, and AI power users who need to quickly test web code without leaving their browser. WHY SIDECANVAS? - Side Panel Workflow - Edit code alongside any webpage - AI Code Testing - Instantly preview code from ChatGPT, Claude, or Gemini - Zero Setup - No accounts, no configuration, works immediately - Privacy First - All code stays local, nothing leaves your browser FEATURES - Three-tab editor with syntax highlighting for HTML, CSS, and JavaScript - Live preview updates as you type - Console output capture - see logs and errors inline - Works in side panel or full-page mode - Dark and light themes - Auto-saves your work - Support for external CDN libraries (Chart.js, jQuery, Bootstrap, etc.) PERFECT FOR - Testing code snippets from AI assistants - Following along with tutorials - Quick prototyping without dev environment setup - Learning web development with immediate feedback - Debugging small code samples PRIVACY All code stays local in your browser. No data sent to external servers. No account required. No tracking. Part of the MikesTools.io project family.