How accessibility unlocked the full potential of a performant ad campaign

Digital ads are built to grab attention. But attention does not always mean access - or conversion.

On one client campaign, the business was paying for premium ad placements across high-traffic digital spaces. The ads were polished and positioned well. But when we reviewed the experience through an accessibility lens, a different opportunity showed up.

The ads were being seen, but they were not equally understandable or usable for everyone. That meant the business was potentially leaving conversions - and an entire segment of its audience - on the table.

Across 3 different ad formats - static, responsive, and HTML5 - our review found accessibility barriers that could affect how easily people understood the message and moved from impression to action.

The Challenge

The campaign had strong creative direction and valuable placement. From a marketing perspective, the ads were doing what they were expected to do - appear in front of the intended audience. But premium placement alone does not guarantee that an ad is reaching its full conversion potential.

Accessibility had not been considered deeply enough during production, which meant some people seeing the ads could still face barriers when trying to take the next step.

Of the creatives reviewed, every ad contained at least one accessibility barrier that could affect readability, comprehension, or interaction. 85% relied on important messaging embedded primarily within imagery, while 80% presented contrast or motion-related concerns.

For a brand already recognized for its social values, this mattered beyond compliance. The experience people had with the ads also reflected the care, inclusivity, and trust the brand had worked to build elsewhere.

The challenge was also bigger than the creative itself. Different advertising formats provide different levels of accessibility control. A static image banner, a responsive display ad, and an HTML5 ad do not expose information to users in the same way.

That meant accessibility could not be solved simply by making the banner "look accessible". We needed to understand both the creative and what the advertising platform could actually expose to users.

The opportunity was to make sure more of the people already being reached by the campaign could actually understand the message, engage with it, and convert.

The Roadblocks

A few barriers stood out during the review.

• Some ad visuals relied heavily on text embedded inside images. While the message was visible on screen, important information was not always available as machine-readable text for users relying on assistive technologies.
• This was particularly important for static banner ads, where advertisers may have limited control over how alternative text or other accessible information is exposed when the creative is served across different placements.
• Motion-based ads communicated key information too quickly, without giving users enough time or control to process the message.
• Low-contrast design choices made some promotional text harder to read, especially when placed over busy imagery.

Why It Mattered

A business may pay for the best placement, highest visibility, and strongest targeting, but if the creative is hard to read / understand / interact with, part of the audience is still being left out.

That also means part of the campaign's potential value is being left unrealized.

The scale of that audience should not be underestimated. Around 1.3 billion people, 1 in 6 people, experience significant disability.

Making an ad easier to understand and act on does not only support people with disabilities. It can also create a clearer experience for people using different devices, dealing with temporary limitations or simply trying to process information quickly.

For a brand built around care and positive social values, that experience matters. Accessibility becomes another way of showing that those values extend into the way the brand communicates with people.

How We Approached It

We reviewed the campaign beyond the surface of the creative.

First, we looked at the capabilities and limitations of the 3 primary ad formats being used.

For static image ads, we treated the banner itself as only one part of the message because accessibility information such as custom alternative text may not always be reliably controlled by the advertiser across placements.

For responsive ads, we looked at whether important information was also being provided through structured advertising fields such as headlines, descriptions, and calls to action instead of being embedded only inside an image.

For HTML5 and interactive creatives, we reviewed whether controls, interactions, focus behavior, motion, and content structure could be made accessible programmatically.

We then focused on the user's full path:

• Can users understand the core message without depending entirely on the image?
• Is important information available as actual text where the platform allows it?
• Is the text readable across different screen sizes and placements?
• Does the design maintain sufficient contrast over backgrounds and imagery?
• Can users process animated or motion-based content without being rushed?
• Are calls to action clear about what will happen next?
• If the creative is interactive, can it be operated using a keyboard?
• Are interactive controls clearly identified to assistive technologies?

This helped the team see the ad as part of a larger user journey rather than a standalone visual asset - and accessibility as a way to unlock more value from the audience the campaign was already reaching.

What Changed

Once we made the client more aware of what different ad formats have to offer in terms of accessibility, the improvements became much more practical.

• Important messaging was moved out of image-only content where possible and reinforced through actual headline and description fields supported by the advertising platform.
• Static banners were simplified so the creative did not depend on large amounts of embedded text to communicate the offer.
• Contrast between text and backgrounds was improved, particularly where promotional copy appeared over photography or complex imagery.
• Calls to action became more descriptive. Instead of relying on vague visual prompts or arrows, the ads used clearer language that told users what action they were taking.
• Motion was reviewed so key information was not displayed too briefly or communicated only through animation.
• For richer HTML5 creatives, accessibility became part of the implementation itself - including keyboard operation, logical focus behavior, accessible names for controls, and more deliberate treatment of animation.

Following the accessibility-focused changes, the campaign's conversion rate increased from 3.1% to 3.8% - a 23% relative improvement. Click-through rate increased from 1.9% to 2.2%, while the average cost per conversion decreased by approximately 16%.

On a comparable level of media spend, this translated to roughly 140 additional conversions per month - an increase of about 23%.

Importantly, these gains came without requiring additional media spend. The campaign was getting more value from the audience and placements it was already paying to reach.

The campaign was easier for more people to understand and act on, while also helping the brand engage an audience segment it had not previously recognized as part of its opportunity.

What We Learned

Prime placement does not guarantee the full conversion potential of an ad.

Accessible advertising helps unlock more of that potential by making sure the people being reached by a campaign can actually understand the message and act on it.

We also learned that ad accessibility cannot be approached with a single checklist for every format.

Different formats provide different levels of control.

• A static image ad may require the creative to carry less critical information because the advertiser cannot always rely on accessible metadata being exposed consistently.
• A responsive ad gives teams more opportunity to separate meaningful text from visual assets through headlines and descriptions.
• An HTML5 creative can provide more accessibility control, but only when accessibility is intentionally built into its structure and interactions.

For advertising teams, accessibility therefore needs to begin before the media buy and before the final creative export.

It should influence the choice of format, copy structure, visual design, interaction model, and destination experience from the beginning.

In this case, accessibility improvements contributed to a 23% lift in conversion rate and a 16% reduction in cost per conversion, helping the brand get more value from placements it was already investing in.

The opportunity was not simply to make an existing campaign more accessible. It was to make the campaign work better - reaching more of the people already seeing it, turning more of that attention into action, and making the advertising experience more consistent with the trust and social values the brand had already built.