# 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. 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. 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 * Communicate and clarify your asset specifications for different types of ad units, by creating a matching PSD Template for each product you are offering to your clients. * TIP: match PSD Templates with ResponsiveAds Templates for different types of ad units, and use the "[Replace or Create elements from Layers"](https://docs.responsiveads.com/creating-ads/setting-up-ads/using-psd-files-with-responsive-ads/how-to-upload-your-psd-file-into-responsiveads#replace-or-create-elements) feature to automatically generate an ad unit with the clients assets. * Simplify asset collection from your clients and designers: the PSD template guides them on sizes and safe areas, and is easy to fill in with assets that match your specifications. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.responsiveads.com/creating-ads/setting-up-ads/using-psd-files-with-responsive-ads/primary-psds-and-psd-templates-and-when-are-they-needed.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.