SizeCharts.dev

sizecharts.dev is an open-source solution designed to help e-commerce businesses manage and display product size charts. The platform provides a complete REST API that allows developers to integrate size chart functionality into their websites, along with an embeddable JavaScript widget that can be added to any site with just a single line of code. The service maintains over 100 pre-built size charts organized by hierarchical categories, making it easy for merchants to find and implement appropriate sizing guides for their products.

The platform includes several practical features tailored for e-commerce needs. It automatically handles dual unit conversions by storing measurements in inches and converting to centimeters as needed. Security is built in through API authentication with scoped keys and rate limiting (100 requests per minute) to prevent abuse. The system also supports complete CRUD operations, allowing businesses to create, read, update, and delete charts, categories, and labels as their product catalog evolves.

The site offers ready-made templates and size guides across multiple categories including men's, women's, and boys' clothing (covering tops, bottoms, footwear, and more). Users can browse examples, access comprehensive documentation, or jump directly into an admin panel to start managing their size charts immediately.