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Shlafzn

Ecommerce performance studio — London

Performance
you can actually
trace.

Paid media, creative, CRO and server-side tracking for Shopify brands. One studio. One trail from the ad to the order.

Paid mediaCreativeCROServer-side trackingShopifyAttribution
Two people laughing over their phones against an electric blue studio backdrop
CampaignShot for the brands we want

Deduplication

1×

Every purchase counted once. Browser and server share one event id.

Server-side tracking

Meta CAPIGA4TikTokGoogle

Stape · Addingwell

Implemented beside the Shopify store. Consent forwarded with every hit.

Your stack, connected

Nine platforms wired through one server container. We implement them; we are not them.

SShopifyStStapeAwAddingwellMMetaGGoogleTTikTokA4GA4TmGTMKKlaviyo
GGoogleTTikTokA4GA4TmGTMKKlaviyoSShopifyStStapeAwAddingwellMMeta

03Services

Six disciplines. One trail of evidence.

Media, creative, the store and the measurement layer are built to agree with each other. When they cannot, we say so.

04 — Case study 01

Food & drink
A plain matte blue drink can frozen inside a splash of water on an electric blue backdrop
Food & drink2026

Server events matched

98%

Last 12 weeks

Sparkling drinks · DTC subscription

A subscription brand that could finally see which ad poured the order.

Server-side tracking rebuilt on Stape, a landing page that matched the ad, and creative judged by first-order margin instead of clicks.

+0%revenue, 90 days0.0xblended ROAS
Paid mediaServer-side trackingCRO

05 — Server-side tracking

Every order should know where it came from.

Ad blockers, ITP and consent all drop pixels. A server container beside the Shopify store sends the purchase the browser could not. Browser and server share one event id, so the platforms deduplicate instead of double counting.

1
event id, shared by browser and server
2
hosts we implement: Stape and Addingwell
4
destinations from one container
0
marketing tags fired against a refusal

From click to order

Live flow

06Creative & CRO

Creative that earns attention. Pages that keep it.

Static, video, UGC, product stills, mobile product pages and landing pages. Every piece is judged by the order it helps create.

Fashion ad creative on a sky blue backdropAd · static · 4:5
Video still of a person laughing while holding a plain white box on a lime backdropVideo · hook frame
PDP · mobile
A white and lime running shoe levitating over a cobalt backdropProduct · still
Landing · desktop
Hands arranging printed ad layouts and colour swatches on a white tableArt direction

07 — More work

Creative, checkout and attribution, read against the order.

All work

08 — Process

A short path. No theatre.

Four steps, in this order. Measurement comes before media because a number you cannot trace is a number you cannot defend.

Portrait lit by the lime glow of a phone screen on a black backdrop
LondonEst. 2026

Accounts, the store, the consent tool and the question finance already asks. We read the order export before we read the ad manager.

Timelines are typical, not promised. A statement of work sets the real ones.

09 — Start a project

Let’s make it perform.

Bring the store, the ad accounts and the figure you do not trust. We will tell you if the first job is measurement, media or the page.