Blob URL (Blob Uniform Resource Locator) is a type of URL that is used to reference Blob objects in web applications.
A Blob (Binary Large Object) is a collection of binary data that can be stored as a single entity. It can contain any type of data, such as images, videos, audio files, or even simple text. Blobs are commonly used for handling files in web applications, allowing users to upload, download, or manipulate files.
When a Blob object is created, it is assigned a unique URL, known as a Blob URL. This URL can then be used to reference the Blob object in various operations, such as displaying an image or playing a video.
Blob URLs are usually generated using the URL.createObjectURL() method in JavaScript. This method creates a temporary URL that represents the Blob object, allowing it to be used in HTML elements, like <img> or <video>.
It's important to note that Blob URLs are temporary and only valid for the duration of the web page session. Once the web page is closed or refreshed, the Blob URL becomes invalid. Additionally, Blob URLs are only accessible within the same origin or website that created them, due to security restrictions.
Overall, Blob URLs provide a convenient and efficient way to work with Blob objects in web applications, allowing developers to easily manage and manipulate binary data.