I want to edit My photos to upload on ecommerce websites, i don't know whether to buy Photohop or Lightroom, please help.

Hi,

I am new into ecommerce business and I want to edit My photos before uploading them.

I am not sure whether to buy Lightroom or Photoshop, Moreover what is the difference between the two?

My main work will be removing the background to white, so which one is better?

Please help