The mobile conversion playbook
Mobile carries most store traffic and converts at a fraction of desktop. Some gap is structural — browsing happens on phones, buying on laptops — but most stores carry avoidable gap on top, and that part is money.
The mobile gap hides in blended numbers: a healthy overall conversion rate can conceal a mobile experience that leaks half its intent. This playbook first separates the structural gap from the avoidable one, then works the avoidable layer where it concentrates — perceived speed on mid-range devices, layouts designed on desktop monitors and shipped to thumbs, and checkout steps that each cost a percentage of finishers.
Stage 1: Quantify your gap, step by step
Segment the full funnel by device: where desktop and mobile diverge is where the mobile-specific problem lives. A gap opening at product-page-to-cart points at layout and content; at checkout-start points at form friction; evenly spread points at speed. Then reproduce it: load your store on a mid-range phone over cellular — not your flagship on office wifi — and feel what your median customer feels.
Funnel steps split by device class, divergence points identified
Field speed data for mobile specifically — the lab-versus-field gap is widest here
Session recordings on mobile for the highest-loss step
The structural-versus-avoidable split estimated honestly
Stage 2: Speed and layout for the devices you actually have
Mobile speed is the compounding fix: image weight, script cost, and render-blocking resources hurt exactly the devices and networks where your gap lives. Layout follows thumb reality: the buy decision — price, variant, add-to-cart — reachable without scrolling gymnastics, tap targets sized for thumbs, galleries swipeable, and the desktop-first clutter (mega-menus, hover states, dense tables) rethought rather than shrunk.
Stage 3: Checkout with fewer thumbs required
Every field typed on glass costs finishers. The mobile checkout stack: express payment options (the wallet buttons) surfaced early — for many stores the single largest mobile fix; address autocomplete; numeric keyboards for numeric fields; no forced account creation; errors that appear inline at the field, not after submission at the top of a page the user has scrolled past.
How it works
Split the funnel, feel the store
Device-segmented funnel plus a real session on a mid-range phone over cellular.
Fix speed, then layout
Field-data speed work first, then thumb-reality layout on the highest-loss templates.
Strip checkout friction
Express payments early, autocomplete on, keyboards right, account walls down.
What you get
The mobile gap quantified and split into structural versus avoidable
Speed improved on the devices where the gap concentrates
Layouts that respect thumbs instead of shrinking desktops
A checkout that loses fewer of the people who wanted to pay
Handled by these agents
Frequently asked questions
What mobile conversion rate is normal?
Commonly half to two-thirds of desktop, varying by category and price point. The useful number is your own step-level divergence — it names the problem, which a benchmark cannot.
Are express payment buttons really that impactful?
On mobile, frequently the largest single fix: they collapse the entire address-and-card form into a biometric confirmation. If they are buried below the fold or behind a step, surfacing them is week-one work.
Should I build a separate mobile experience?
No — maintain one responsive experience designed mobile-first. Separate mobile sites double maintenance and drift apart. The fix is designing for the majority device, not forking.
Which agents run this?
Analyst quantifies and splits the gap; Ops owns mobile field speed; Builder ships layout and checkout changes. Post-change measurement runs against the recorded baseline, device-segmented.
Keep reading
Conversion rate optimisation
Find where the funnel leaks, fix the cause, and measure whether it actually moved.
Improve store page speed
A field-data-first speed programme: measure real users, fix by layer, prevent regression.
A/B testing
Test the genuinely uncertain decisions, sized honestly, instead of testing everything badly.
Structure internal links
An internal link architecture that spreads authority to revenue pages — maintained, not decayed.
Put the team to work on your store
Connect your storefront, analytics, and email stack, set a goal, and let the agents run the work end to end. Start on the free plan with your own model key.