Mobile Landing Optimization for Paid Acquisition

Before any layout work, compare the clicks the platform billed you for against the sessions your analytics recorded. On mobile paid traffic that gap usually runs 15 to 25 percent. It is not a tracking curiosity. It is people who tapped, waited and left, and no amount of hero copy recovers them. The first pass: I reproduce your paid mobile entry on a mid-tier Android over a throttled connection, inside the browsers your traffic actually arrives in: the Facebook and Instagram in-app webviews, TikTok's, and Safari arriving from Google. These are not Chrome on a laptop. In-app webviews cold-start their own network stack, discard storage between sessions, and on some Meta builds drop the query string across an internal redirect, which is exactly where fbclid disappears and your conversion counts stop reconciling. What usually costs the most: The consent banner. A CMP that blocks rendering while it resolves, and iubenda, Cookiebot and Usercentrics all can depending on how they were installed, pushes largest contentful paint past 2.5 seconds on its own. Next, the redirect chain: every hop between ad and page costs 200 to 400 ms on a mobile network and click identifiers do not survive all of them. Third, interaction latency. A page above 200 ms INP while somebody is typing into the first field reads as broken rather than slow, and they leave without an error ever being shown. The work: Cut the chain to a single hop and carry gclid, fbclid, gbraid and wbraid across it intact. Move consent so it stops gating first paint while still gating what it legally must. Set the first-party identifier server side from your own subdomain so Safari's seven-day cap on script-written cookies stops truncating the attribution window and inflating your apparent CPA. Then the form: input modes and autofill hints, field count argued down one field at a time with the team that owns each, error handling that does not dismiss the keyboard, and a submit path that survives the app being backgrounded mid-flow. Regulated funnels: Italian gambling registration requires a verified identity document, and the mobile upload step is where the deposit funnel dies. It cannot be removed. It can be moved to after first deposit intent, made resumable after an interruption, and made to accept a photograph taken badly in bad light. In this vertical that sequence change has been worth more than every layout decision on the page combined. Not included: No media buying, no bid management, no creative production. I do not rewrite your offer or your pricing. If the campaign is buying the wrong audience, a faster page makes them leave sooner, and I will tell you that after the first pass rather than build against it for a quarter. Not for: Native app install campaigns end to end. I work up to the store handoff and stop there. Also not for teams who cannot deploy to production inside two weeks, because the findings decay: a webview quirk found in March is fixed or replaced by a new one by June, and a report about it is worth nothing. How it is measured: Cost per acquisition on the affected campaigns, at unchanged bid strategy, over matched periods, alongside field data from the Chrome UX Report at the 75th percentile. Lighthouse scores are for debugging during the work and do not appear in the readout. Where volume allows, the rebuilt entry runs against the old one as a split rather than a before-and-after, and I will say plainly when volume does not allow it.