Blobs and Blob URLs | JavaScript Tutorial
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This tutorial shows you how to create Blob objects using the Blob constructor, from user input or an external URL and create a Blob URL from the resulting blob data using URL.createObjectURL().
A Blob URL functions like a normal URL on a HTML page without the need for a server.
Use case examples featured in the video include how to start a client-side download from data held in a blob object, preview a user-uploaded image and generated a URL to an image edited with the HTML Canvas API.
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