How to Evaluate HTML Printing Function Performance

Performance

It takes 1 second to get the picture at the first time, next time to print, it will need 500 milliseconds to get the picture.
In the case of 60 lines of receipt, the printer starts 1 second or 0.5 seconds slower than the printing of text, and the end of the printing is 0.5 seconds or 0.2 seconds slower than the printing of text.
In the case of 120 lines of receipt, the printer startup is also 1 second or 0.5 seconds slower, and the end of printing is 0.5 seconds faster.

Keep HTML tags simple.
The count of tag affects the speed of getting pictures, so use tag as little as possible.