> For the complete documentation index, see [llms.txt](https://help.sdocs.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.sdocs.com/sdocs/template-architecture/template-authoring/how-to-add-a-background-image-or-watermark.md). # Adding a Background Image or Watermark To add a background image or a watermark to your template, you’ll need to insert a small block of CSS styling into your document’s `` section. ### Implementation Copy and paste the code block below. This snippet ensures your image remains centered, fixed in place, and doesn't repeat across the page. ``` ``` ### Quick Tips for Best Results: * Image URL: Replace the placeholder URL with the direct link to your hosted image. * Sizing: The `background-size` property is set to `400px`. You can change this to `cover` if you want the image to fill the entire screen, or adjust the pixel count to fit your watermark's design. * Opacity: If the image is too bold and makes the text hard to read, you may want to use a pre-faded image file (PNG) for a true "watermark" effect. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://help.sdocs.com/sdocs/template-architecture/template-authoring/how-to-add-a-background-image-or-watermark.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.