Your title page, copyright page, and abstract page must follow the Graduate School's templates. This is harder than you might think! The Formatting Guidelines section of the Graduate School's Thesis/Dissertation page has detailed instructions on how to fulfill their requirements. Contact the Graduate School at uwgrad@uw.edu for help with any questions.
Neither the Libraries nor the Graduate School has an official opinion on formatting beyond the first three pages.
Here are the templates:
Accessibility refers to equal access for all users, including those with disabilities. While many conversations around accessibility center legal requirements, in reality, accessibility is both morally imperative and universally better practice. Greater accessibility enables greater reach for your scholarship, and UW Accessible Technology offers many resources for helping you make your ETD accessible.
ProQuest has some guidelines about what they prefer for general formatting, mostly based around creating a document that a) can be printed easily in the case that you or someone else orders a physical copy, and b) follows best practices for long-term preservation. Remember that while these guidelines are good practice, no one at the Graduate School or the Libraries will be checking the specifics.
A few departments have specific requirements for formatting theses and dissertations. Ask your Graduate Advisor whether these requirements exist. Here are examples of departmental requirements that have been published online:
We know that it can be frustrating to not have more specific instructions. If your department doesn't have guidelines, try to look at it as an opportunity - whatever you choose is correct!
Here are some suggestions you are free to follow (or not):
Need help formatting your citations? There's a guide for that!