text/plain
Hello World! (default=utf-8)
data:,Hello%2C%20World!
Hello World! (base64)
data:text/plain;base64,SGVsbG8sIFdvcmxkIQ%3D%3D
text/html
Hello World! (default=utf-8)
data:text/html,%3Ch1%3EHello%2C%20World!%3C%2Fh1%3E
Hello World! (base64)
data:text/html;base64,SGVsbG8sIFdvcmxkIQ%3D%3D
Hello World! (uft-8,base64)
data:text/html;charset=utf-8;base64,SGVsbG8sIFdvcmxkIQ%3D%3D