Open your ChatGPT ad destination on a phone and start filling in its form. The keyboard appears. A cookie panel is still open. A fixed contact bar sits at the bottom. Can you see the field you are editing and the message underneath it? That small exercise reveals more about a sticky button than a polished screenshot of an empty page.
A sticky action can keep a relevant next step available while a visitor reads. It can also cover precisely the information that helps them decide. The choice is a layout decision for your website, not a feature of the ChatGPT ad itself. Make the decision around the actual destination and its advertised offer.
First decide whether persistence serves the journey
Imagine an ad offering a quote for a meeting-room installation. Its destination explains room requirements, scope, equipment and the quotation process. On a long mobile page, a persistent “Request a room quote” action may save a return to the opening section. On a short page with a visible form, the same bar may add little.
Do not install a fixed button merely because other sites use one. Sketch the reading sequence and mark where the visitor can already continue. If the natural action appears at each genuine decision point, the persistent version needs to earn its space. If visitors need to compare two packages, a single fixed purchase button may push them past an unresolved choice.
Write down the reason for the bar in concrete terms: “The quote form is below a long scope explanation, and readers need a way to reach it after any section.” That is a design hypothesis you can inspect. “Sticky buttons convert better” is an unsupported generalisation.
Match the action to the ChatGPT ad offer
The bar should retain the same action meaning as the destination’s main button. If the ad offers an assessment quote, “Get started” is less informative than “Request an assessment quote”. Avoid changing it to “Book now” unless the next step really creates a booking.
If several ads use the page, check that they advertise the same next step. A page shared by an information offer and a purchase offer can create competing expectations. Solve that in the destination brief rather than letting the fixed button silently privilege one ad. The first-screen guide helps establish the opening offer before adding persistent controls.
Reserve space instead of covering the ending
The practical failure often appears at the bottom of the page: the visitor reaches the form, but the bar covers the last field, submission button or confirmation. Leave usable space for content to move clear of the bar. Inspect the actual browser rather than relying on the design file’s dimensions.
W3C’s Focus Not Obscured (Minimum) requires a keyboard-focused component not to be entirely hidden by author-created content. This review goes further: aim to keep the full field, label and instruction visible. Passing that one criterion does not establish that the whole form is accessible or easy to use.
| State to open | Question to answer |
|---|---|
| Form field with keyboard visible | Can the field and its instruction be read? |
| Validation error | Can the visitor find and correct the problem? |
| Consent panel open | Are controls distinguishable and reachable? |
| Final page section | Can the visitor read the last line and use the footer? |
| Larger text | Does the bar wrap without hiding its meaning? |
Keep this review specific to supported page states. A screenshot showing the bar at the top of the page does not establish that the complete journey works.
Review the button when available space changes
- Keyboard open
Keep the field and instruction readable.
- Error message
The fixed bar must not cover the correction.
- At the form
Distinguish reaching the form from submitting it.
- At the final field
Keep the error message and submit action clear of the bar.
Choose what happens near the form
When the visitor reaches the form, the persistent action may no longer need to appear. If it remains, avoid presenting two visually identical submit buttons with different behaviour. A button that scrolls to the form should not be labelled as though it submits the enquiry.
If the bar is hidden near the form, make the transition calm and predictable. Do not move the page content abruptly when it appears or disappears. Review the layout movement guide if the bar’s insertion changes the reading position. Preserve entered answers when people navigate back to the offer.
Test the movement to the form
Activate the sticky action while the form is outside the viewport. Check where reading resumes. The visitor should be able to see the form heading and any instructions rather than arriving in the middle of the fields. Try the transition using a keyboard too: after activating the link, continuing through the form should follow a comprehensible order. A visual scroll alone does not establish how keyboard interaction behaves.
Repeat the check after a validation error. When the page returns to the first invalid field, the fixed bar might cover the error message even if the initial arrival worked. Record the starting state, action and obscured content so the issue can be reproduced. Include an ordinary in-page button among the possible solutions; completing the enquiry is the relevant requirement.
Make one release decision from the full walkthrough
Run the journey from the actual destination link, including any ordinary redirect, then read, open the form, trigger an error and complete the test submission through your normal safe testing process. Repeat with keyboard navigation and a narrow viewport. Ask another reviewer to look specifically for obscured information.
Ship the persistent action only if it supports the same offer and the full journey remains usable. If it does not, a clear in-page action is a reasonable outcome. After release, assess real feedback and the quality of resulting enquiries; visibility alone is not evidence that the control helps people decide.
Sources and scope
Deciding whether a persistent mobile action helps the ChatGPT ad journey and checking that it leaves the form usable.
Working methods and examples are editorial suggestions. Check current platform requirements and available features before implementation.