The signature file of the post refers to the personality picture below the post when replying with a computer. If you use a signature file, you can bring a personalized picture with you every time you reply.

Signature file:

It means when sending emails to friends, relatives, classmates, customers, etc. , you can add your own electronic business card to the e-mail. This electronic business card is a signed document. You can design personalized business cards or email signature files online through official website, a mobile phone network disk. In Baidu Post Bar, you can also use signature files. You can add some signed pictures or emails you like to make it easier for others to know you. In qq space, there is also a signature file function. When you leave a message to others or publish your own blog, you can choose whether to use a signature file to show your unique personality.

Post bar signature file refers to the personality picture at the bottom when posting.