Shadcn Calendar Heatmap

Last updated October 8, 2025

About This Template

The shadcn Calendar Heatmap is a modern, sophisticated alternative to primitive React heatmap libraries, providing a GitHub-style contribution calendar visualization built with Next.js, TypeScript, shadcn/ui components, and Tailwind CSS. Designed to display temporal data patterns in an intuitive, visually appealing format, this component transforms activity data into color-coded calendar grids that make it easy to identify trends, gaps, and patterns at a glance. The heatmap features a year-view calendar layout with weekly rows showing activity intensity through color gradients, customizable color schemes to match different themes and data types, tooltip displays showing exact values and dates on hover, responsive design that adapts calendar density to screen sizes, TypeScript support ensuring type safety for data inputs, integration with shadcn/ui's theming system for consistent styling, and performance optimizations for rendering large datasets efficiently. Unlike basic heatmap solutions that offer limited customization or poor mobile experiences, this component provides the flexibility and polish expected in modern applications. Use cases include displaying user contribution history similar to GitHub's activity graph, visualizing fitness or habit tracking data across months or years, showing sales or revenue patterns to identify seasonal trends, tracking content publication frequency for blogs or social media, monitoring system uptime or error rates in DevOps dashboards, and presenting any time-series data where visual pattern recognition is valuable. The component's GitHub-inspired design is immediately familiar to developers while being flexible enough for diverse data visualization needs. Built with TypeScript throughout, it provides excellent developer experience with autocomplete and type checking, making integration smooth and reducing runtime errors.

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