1. The maximum size of the picture in the signature file of Baidu Post Bar is 500*200 pixels, which can be a static picture (such as *). jpg，*。 gif，*。 png，*。 Bmp and other formats) or dynamic pictures (such as *. Gif format). The inserted picture will be automatically scaled according to the aspect ratio. Click "Submit" to edit successfully.

2. After registering in Baidu Post Bar for three months, when you log in and post, the option of signature file will appear under the post box. You can check "Use signature file" and then select the signature file set to use. The signature file just submitted may take some time to review. After the review is completed, you can use the new signature file when publishing.