Bridging the Accessibility Gap in Programmatic Advertising

As accessibility standards continue to evolve, especially with increasing focus on ADA alignment, marketers are being challenged to ensure that every digital touchpoint is inclusive and usable for all audiences.

For higher education institutions, this obligation has taken on new urgency. Under the ADA's Title II amendments, which mandate WCAG 2.1 AA compliance for web content and digital communications, public universities and their vendors will need to comply. This elevates accessibility from best practice to legal requirement, with direct implications for how digital campaigns and creative assets are planned, built, and delivered.

While the deadline has been extended to April 2027 and April 2028, depending on the organization’s size, the lift can be large and the time to take action is now.

But what happens when platforms are not fully equipped to support those requirements?

We recently faced this exact scenario while working in The Trade Desk. Our goal was to ensure that display creatives met accessibility best practices, including the use of alt text for screen readers. However, we found that alt text cannot be added directly within the platform for standard image creatives. This not only created a technical limitation but also raised an important question around how accessibility should influence creative decisions from the start.

The Challenge

The Trade Desk currently does not support adding alt text within its user interface for static image creatives. This creates a gap between accessibility requirements and platform capabilities.

It also exposes a broader challenge. When accessibility cannot be applied directly within a platform, it cannot be treated as a final step. It requires earlier consideration in both design and production workflows to ensure nothing is lost in execution.

Our Approach

Instead of treating this limitation as a blocker, we adapted our approach. We embedded alt text directly into HTML based creatives using the standard <img alt="..."> attribute. This ensured accessibility was implemented at the code level.

At the same time, this approach pushed us to be more intentional in how we designed the creative itself. Because alt text must clearly describe the content, it became a forcing function for simplifying layouts, strengthening hierarchy, and ensuring messaging was direct and easy to understand.

Example:

<img src="creative.jpg" alt="Descriptive text of the image">

How We Validated

To ensure the solution worked effectively, we validated it through multiple methods. We reviewed the page source to confirm alt text was properly embedded. We also used a screen reader tool to verify that the alt text was correctly announced. In addition, we cross checked behavior in cases where browser extensions were not reliable.

This validation step also reinforced that accessibility is not just about implementation, but about experience. It is critical to confirm that content is not only technically compliant, but also clearly communicated to users relying on assistive technologies.

The Outcome

This approach allowed us to deliver ADA-conscious creatives that meet accessibility expectations while remaining fully compatible with The Trade Desk platform.

Why This Matters

Accessibility is no longer optional. It is a responsibility. And as this project showed, it is not just a technical requirement, but a creative one.

When platforms are not yet equipped to fully support accessibility features, it becomes critical for teams to collaborate, adapt, and find solutions that prioritize inclusive user experiences.

By embedding accessibility into both the design and build phases, teams are not only meeting requirements but creating work that is more thoughtful, more scalable, and ultimately more effective.

Good accessible design is not a constraint. It is a forcing function for better creative.