Why do we need Open Files? SEPARATE ELEMENTS In an Open File , these elements remain separate: Logo Headline and other text Product images Background Buttons Colours, etc This means we can move, resize, replace or edit one element without changing everything else. WHY WE NEED SEPARATE LAYERS To resize your banners for different ratios, we need to physically move the individual design elements independently within the full image itself; we cannot simply stretch a 300×250 banner into a 970×250 banner (as an example - this principle applies to all sizes); it would look like this: WHAT IT SHOULD LOOK LIKE WHAT IT ENDS UP LOOKING LIKE See this in action  here . This is important because proper resizing requires us to work with individual elements independently to: Move a product without moving the background Move a logo separately from the headline Resize and reposition assets for different formats Optimise layouts for different screen sizes When we only receive a flattened image (.JPG, .PNG, etc), none of these elements exist separately anymore - to us, the entire banner becomes a single picture . Imagine it like receiving a photo of a loaf of bread and being asked to change the flour - the flour is already baked into the bread; they’re no longer separate elements that can be changed. The same applies here. Without layered source files , we cannot accurately isolate products, logos, text, backgrounds, buttons, or other creative elements. ⚠️ 3D projects have their own separate, additional asset requirements. Read the 3D-modelling specific Help Page here. *Read more about what Open Files are  here .