Build a Bulk Image Compressor with HTML, CSS, and JavaScript
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EDITOR BRIEF
This tutorial shows how to create a browser-based bulk image compressor that reduces file sizes without sending images to a server, which helps protect privacy. It uses the HTML5 Canvas API to compress images and the JSZip library to bundle multiple results into one ZIP download. The project is built as an embeddable widget for use in places like a WordPress Custom HTML block.
INSIGHTS
This is a practical way to learn how browsers handle files, images, and downloads. As a next step, try building the drag-and-drop upload first, then add Canvas-based compression and ZIP export one piece at a time.
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