To batch post posters on Taobao detail pages, you need to make multiple posters into one long picture first. You can use related tools to stitch multiple pictures together to generate one long picture.

Then select the product you want to post in the Taobao backend, enter the "Product Edit" page, select the "Details Description" module, insert the prepared long picture into the product details, and save it. If you need to batch post posters for multiple products, you can use the batch modification function, select multiple products for editing, insert the long picture into the "Details Description" module, and save it.