TXT (Data URI Scheme)

The Data Uri TXT file format is a method of embedding external webpage resources, such as images, directly into the HTML markup. The benefit of embedding external resources is that it reduces HTTP requests for a webpage, thus reducing the overall load time.

Data is encoded using the Base64 method of encoding binary data as text using ASCII characters. Due to the encoding method, the resulting file size will be around 33% larger than the binary equivalent, so there is a trade-off between the number of HTTP requests and the increase in request size.