# Primary PSDs & PSD Templates and When Are They Needed?

A Primary PSD or Master PSD (alternative term) is a structured Photoshop file, modified in Photoshop to match your company’s templates and/or ad formats. A set of instructions for the modifications needed should be saved for each different use case.&#x20;

A Primary PSD is the source of design assets used in Fluid Ad Creator - the starting point for creating a responsive ad creative from your static designs. When a Primary PSD is set up correctly, designers can more efficiently set up the responsive behaviors for resizing in the Fluid Ad Creator. This saves time later on, as mistakes in resizing rules are avoided.

You can benefit from setting up a PSD Template, following the above guidelines. A PSD Template is a generic example file that has the correct structure and settings defined, including useful information like safe areas or content guidelines. Designers save the PSD Template as a new Primary PSD file, and add or replace relevant layers there for each campaign.&#x20;

You can request any bespoke ResponsiveAds Templates to include downloadable PSD Templates that match the asset specs for that template. This makes it easy to communicate asset specs with stakeholders and stay aligned on deliverables.

## Why create a Primary PSD?

* Ensure the layout, grouping and elements generated match your formats & templates
* Maintain consistency for designers across ad units, speeding up delivery
* Avoid issues with unsupported Photoshop features, or image asset renditions

## Why create a PSD Template?

* A single point of truth for all your designers to reference when building PSD files
* Simplify asset collection from your clients and designers: the PSD template guides them on sizes and safe areas, and can keep all the required assets for an ad in one correctly structured file.
