There are many articles on the Internet, repetitive articles are no longer tautology, only provide ideas, and explain some other articles about fuzziness.
You may notice that some of the SRC or CSS background pictures on the web page follow a large string of characters, such as [code:19l33ksi]data#58; image/png; Base64, iVBORw0KGgoAAAANSUhEUgAAAAEAAAAkCAYAAABIdFAMAAAAGXRFW...