At the beginning, I chose graphic publishing, so I can upload photos. This may be incomprehensible. I put the specific methods and processes below, hoping to help you.

1. Open Tik Tok's homepage and select the+sign below, as shown in the figure:

2. First select a photo, and then send a picture, as shown:

3. Then select the image to upload here, and click Next, as shown in the figure:

4. You can use music to process pictures, and click Next, as shown below:

5. Finally, add a description of the work, and click Publish Picture, as shown in the figure:

So you can upload photos.

If you have other methods, please leave a message in the comments section below.