Free Online CSS Mesh Gradient Generator

Overview

A comprehensive, browser-based tool for web designers and developers to create fluid, multi-point mesh gradients. The tool offers a real-time visual canvas where users can manipulate gradient nodes, customize colors, and export clean, production-ready CSS code.

Core Features

• Interactive Canvas: A visual workspace where users can add, remove, and drag color nodes across the viewport.
• Dynamic Color Controls: Built-in color picker integration for each node to set exact hex or RGBA values.
• Real-Time Preview: Immediate visual feedback as nodes are adjusted.
• Instant Code Export: A dedicated code display window that updates live, featuring a "Copy to Clipboard" button.
• Complexity Scaling: Slider to adjust the blur/spread radius of individual mesh nodes to create either sharp or soft transitions.

UI Layout

• Header: Clean, centered title with an action area for "Copy CSS" and "Reset Canvas".
• Main Tool Area:
  • Left Sidebar: Settings for canvas dimensions (e.g., aspect ratio toggles), export format (CSS background, SVG code), and a list of current nodes.
  • Center Canvas: A large, interactive area using HTML5 Canvas or CSS-positioned elements for the gradient preview.
  • Right Sidebar: Live CSS output code block with syntax highlighting, contained within a frosted-glass card.
• Responsiveness: On mobile, the tool stacks the panels vertically. On tablet/desktop, it utilizes a 3-column layout.

Design & Aesthetics

• Color Palette: High-contrast light mode. Primary whites (#FFFFFF), light gray backgrounds (#F9FAFB), soft border grays (#E5E7EB), and a vibrant primary action color (e.g., #3B82F6) for buttons.
• Typography: Sans-serif font stack (Inter, system-ui) for legibility.
• Transitions: Smooth 200ms ease-in-out transitions on all button hovers and layout shifts. Subtle box-shadows (elevation) for cards.
• Feedback: When a node is dragged, the cursor changes to grabbing, and nodes highlight on hover.

Technical Implementation Directives

• Single File: All HTML, CSS, and Vanilla JavaScript MUST reside in one single file. No external frameworks or libraries that require bundling.
• No Persistent Storage: DO NOT use localStorage, sessionStorage, or cookies. Maintain state purely in a JavaScript object or array in-memory.
• Sandboxed Environment: The app must be fully functional without needing to save state to the browser. Avoid prompt(), alert(), or confirm() methods—use custom Modal components built with div elements.
• Performance: Use requestAnimationFrame for dragging logic to ensure the UI stays responsive at 60fps.