> For the complete documentation index, see [llms.txt](https://docs.atomyx.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.atomyx.io/atomyx-submit/implementation/submission-workflow/upload.md). # Upload This is where the customer provides their artwork file and gets the first level of feedback about whether the file is suitable for the intended product. ### What happens during upload When a customer uploads a file, Atomyx Submit: * accepts the file through the portal interface * validates basic requirements such as file type and size * triggers a quick preflight check * generates a preview for customer review This gives the customer immediate feedback without waiting for the full production process. ### What the quick check should cover The upload-stage check should be lightweight and fast. Typical checks include: * file dimensions * image resolution * spot colour presence * font embedding * page count The goal is not to perform every possible production check at this stage. It is to catch the most obvious issues early and keep the experience responsive. ### Why this stage matters A strong upload stage helps: * prevent unsuitable files entering the workflow * give customers confidence that the file has been understood correctly * reduce unnecessary back-and-forth later * create the basis for preview, adjustment, and proofing ### Best practice Keep the upload-stage preflight focused on fast feedback. More expensive checks and production corrections should usually happen later in the full production preflight stage. --- # 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: ``` GET https://docs.atomyx.io/atomyx-submit/implementation/submission-workflow/upload.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.