I made the signature document of the Post Bar with Mito Xiu Xiu. The size is not well grasped. I know the best size, but the scale of my revised picture is not consistent with the original one ~
The scaling is equal. The scaling distortion in PS is proportional to shift. Try it in Meitu Xiu Xiu. Signature files are messy, large and small, and the size is fixed. Will the picture of Baidu uploading the signature file be scaled to a square in the end? If so, when you design in the software, the size of the new canvas is set to square, such as 400*400, and then you can edit it. I made a 400*300, and it was uploaded without distortion.