Size Chart for Magento 2 Extension - Cynoinfotech
https://www.cynoinfotech.com/product/magento-2-size-chart-extension/
The Magento 2 Size Chart allows the creation of product charts with images, presented as a popup or directly on the page. The Magento 2 Size Attribute Addon lets you engage with more customers by improving your product pages. The size chart Magento 2 will display as a popup on store product pages or as part of the product page content. You can also add custom charts using the visual HTML editor, which makes this Magento 2 size extension a really easy-to-use tool that offers extraordinary possibilities.