LCP · CLS · INP · TTFB
How much revenue is your slow store costing you?
We measure your store's real-world performance across every critical page, calculate the conversion impact in euros, and give you a prioritized fix plan sorted by ROI. €390 — fixed price, 7 business days.
What you get
Numbers, not opinions. Revenue impact, not vague advice.
Every metric tied to money. Every fix tied to ROI.
Full CWV measurement
LCP, CLS, INP, and TTFB measured on every critical page — homepage, collection, PDP, cart, checkout — under realistic conditions.
Dollar impact calculation
We combine your traffic data with conversion-rate research to estimate the exact revenue you're losing to slow pages. Per page, per metric.
What's actually slow
Not "your site is slow." Instead: which specific resource, script, or render pattern is causing each metric to fail — with evidence.
ROI-ranked fix list
Every fix ranked by expected revenue gain ÷ implementation effort. You know what to fix first and what the payback looks like.
Competitor comparison
How your store compares to 3 competitors you choose. Where you're behind, where you're ahead, and where wins are easiest.
45-min debrief
Walk through the report with the engineer. Discuss trade-offs, timelines, and whether to fix in-house or bring us in.
How it works
Order today, report in 7 business days.
Order & details
Share your store URL, platform, and monthly traffic. We invoice €390 and start as soon as it's paid.
day 1Measurement
We run lab and field measurements on every critical page type, under multiple conditions and device profiles.
days 2–4Analysis & report
Root-cause analysis, revenue impact math, competitor benchmarks, and the prioritized fix plan — all in one PDF.
days 5–7Debrief call
45-minute walkthrough of every finding. Bring your developers or agency — we'll explain it to them too.
day 8–9The math
Every 100ms of load time costs you real money.
Google's own data and peer-reviewed research consistently show the same pattern:
speed:conversion 1s slower = 7% fewer conversions
A well-cited figure from multiple e-commerce studies. For a store doing €100k/month, that's €7k/month — €84k/year.
speed:bounce 53% leave after 3 seconds
Google's mobile benchmark. If your PDP takes 4+ seconds, more than half your paid traffic never sees the product.
speed:seo CWV is a ranking factor
Core Web Vitals directly affect your search rankings. Red metrics mean lower positions and less organic traffic over time.
Free interactive tool
See the number before you order.
Not ready to book yet? Plug your revenue and load time into our calculator and watch the monthly & yearly loss appear live — based on empirical Portent conversion data.
Order your speed audit
€390 — know exactly how much speed is costing you.
Share your store URL and platform. We'll measure everything, calculate the revenue impact, and tell you exactly what to fix first.