How does WeChat add words to Yan characters?

How WeChat adds text to expressions is as follows:

Open the mobile phone WeChat, open the friends dialog box, click the expression icon in the lower right corner, click the gesture icon, and then choose to shoot your own expression. After shooting, click Add Subtitle, enter text, and select Done to make an expression pack with text.

Wechat face text cannot be exported, so you can't add text directly. However, if you have the original gif, you can still add text to the original gif, and then send it on WeChat and save it.

It's very convenient to edit dynamic diagrams in web pages, such as adding the text you need. Compared with other similar websites, it is characterized by no login, simple operation, instant use, and can also be used on mobile phones. A dynamic picture without words like this always feels lacking. If you add dynamic words, you can better express your emotions.