E-Commerceo
What is a Data URL?
A Data URL, also known as Data URI, is a string that encodes data directly into HTML or CSS, negating the need for external resources.
Uses of Data URI
Data URIs offer the convenience of including data in-line in web pages. This lets them act like external resources, but without the additional server requests.
Example of a Data URL
A standard Data URL would resemble: <img src="data:image/png;base64,iVBORw0...". These URLs can replace ordinary URLs, although some security considerations apply.
Base64 vs Data URI
A Data URI is a Base64 encoded string, but what sets it apart is its direct embeddability into HTML or CSS, which the browser can then decode.
How to Set Data in URL
Methods such as append() and set() allow you to add parameters to a URL. Append() adds key-value pairs, while set() assigns or creates new keys.
Why is URI Encoded?
URI encoding is essential for securing form inputs and relies on your page's character-set, with UTF-8 as the default for HTML5.
Caching and Data URLs
Data URLs are not cached by browsers, resulting in slower load times for recurring images, especially in large websites.
Maximum Data URI Size
The upper limit for a Data URI is browser-dependent. For example, Chrome caps it at 2MB for the current document, also influenced by system memory constraints.
What Kind of Data Type is a URL?
A URL is a type of Uniform Resource Identifier (URI), essentially a string used for network resource identification.
Data URL of an Image
An image's Data URL commences with 'data:', followed by the MIME type and the encoded data. Text is generally in plain text, whereas binary data is usually base64 encoded.