Walk into the client meeting with a number in dollars
Clients don’t buy milliseconds. SIUX Studio turns a slow site into a monthly cost, ranks the fixes by money, and shows the before and after in revenue once the work ships.
Your own sales dataDelivered in 48 hMoney-back guarantee
What to fix first
clientstore.com
Sample report, ranked by money at stake each month
- 1/products/best-sellerProduct photo is 2.4 MB$1,200/mo
- 2/checkoutPayment app blocks rendering$860/mo
- 3/collections/saleFilters react in 420 ms$410/mo
Proposal: these three fixes are worth about $2,470 a month.
The driver to watch
For an agency, the driver is mobile LCP on the client’s top revenue page
It is the metric clients fail most often, the one closest to sales, and the easiest to show before and after. Lead with it, and put a monthly cost next to it.
What usually causes it
- Oversized hero and product images
- Third-party apps loading before the main content
- Slow, uncached server responses
LCPLargest Contentful Paint
4.3 s
/products/best-seller on mobile, in a sample report
+6%revenue at Cdiscount during Black Friday after improving its Core Web Vitals.
Source: web.devAgencies
One report, from first call to renewal
The same numbers open the conversation, scope the work and prove it paid off.
Before the call
Prospect with a free speed check
Run it on any public URL, with no access or install. Show up knowing where the site stands.
In the proposal
Scope by money, not by score
Fixes come ranked by dollars at stake, so the order of work and the price of the project are easy to defend.
After launch
Prove it in revenue
Before and after in the client’s own currency, on a report with your brand. That is the case for the next project.
What we measure
Five signals, and what each one costs you
Speed metrics on their own are trivia. Each one below is tracked per page and tied to the sales that page brings in.
0.1s
Faster on mobile was enough to lift retail conversions by 8.4% in the Deloitte × Google study.
Read the Core Web Vitals guideLargest Contentful PaintWhen the main image or headline shows up.Good ≤ 2.5 s
Interaction to Next PaintHow fast the page reacts to a tap.Good ≤ 200 ms
Cumulative Layout ShiftHow much the page jumps while loading.Good ≤ 0.1
Time to First ByteHow long the server takes to answer.Good ≤ 0.8 s
Revenue per pageSales matched to the page that made them.Via webhook
Calculator
What your client’s slow site is worth
Put in a client’s rough numbers during the call. The assumption behind every figure is spelled out below.
Extra annual revenue at 4.3 s
Drag the slider to the right to see what a faster page earns.
- Revenue today
- $80,000/mo
- Sales per month today
- 1,067
Assumes, for every 0.1 s faster, +1% more conversions and +0.4% more visitors (fewer people give up before the page loads, plus a light Google ranking boost), both halved below 2.5 s, with visitors capped at +10%. Deloitte × Google measured +8.4% conversions for retail from 0.1 s, so this is conservative. Your real report uses your own visitors and orders.
The research behind the maths
More retail conversions from a site just 0.1 s faster on mobile.
+8.4% conversionsDeloitte × Google
Higher average order value in the same study, same 0.1 s.
+9.2% order valueDeloitte × Google
More sales at Vodafone after improving LCP by 31%.
+8% salesweb.dev
Better mobile conversion at Lazada with a 3× faster LCP.
+16.9% mobileweb.dev
Ask the report
Questions the report answers for an agency
Sample answers, from the kind of data a connected site produces.
Which client site should we fix first?
Of your 10 client sites, three have over $2,000 a month at stake on mobile. Start with those.
What goes in the proposal?
Three fixes on clientstore.com worth $2,470 a month, ordered by money, with the page and the cause of each.
Did our work pay off?
Since launch, mobile LCP on /checkout went from 4.1 s to 2.3 s, and the client recovered about $2,480 a month.
Inside the product
Three screens, one question answered
How much is my website costing me, and what do I fix first?
Loss
Last 28 daysAt stake
$3,140
/mo
Pages to fix
3
of 38
Mobile LCP p75
4.1 s
target 2.5 s
| Page | Problem | Fast vs slow conv. | At stake |
|---|---|---|---|
| 1/checkout | LCP 4.1 s | 41% vs 29% | $1,200/mo |
| 2/pricing | INP 480 ms | 2.6% vs 1.2% | $740/mo |
| 3/course/masterclass | CLS 0.24 | 2.1% vs 1.7% | $310/mo |
| 4/ | LCP 2.9 s | 1.9% vs 1.6% | $190/mo |
Fix #1 first: the hero image on /checkout is 1.8 MB and loads after two third-party scripts.
Then the alerts do the rest
Every signal flows into one place. When a deploy, a new app or a theme change makes things worse, you hear about it the same day, with the page and the price.
Deploy watch — A new release is compared with the week before it. If a page gets slower, you get an alert naming the page and what it now costs.
How it works
How it works for agencies
- 1
Check a prospect for free, then report
A free speed check before the call. Once they’re in, a white-label revenue report from their own sales.
- 2
Install on client sites
One script tag per site, under 2 KB. The Agency plan covers 10 sites with client access.
- 3
Report the result in revenue
White-label reports with your brand, the before and after, and the money recovered.
Works across your clients’ stacks
- ShopifyFirst integration
- StripeEarly access
- WooCommerceNext
- PrestaShop, VTEX and MagentoOn the roadmap
- Any other siteTracker only
Most of your clients on one platform? Tell us which, and we’ll prioritise it.
FAQ
What agencies ask first
Talk to a person
Nothing here is a chatbot. Write to us and a founder answers, usually the same day.
Write to usCan I put my agency’s brand on the reports?
Can I run reports on prospects who aren’t clients yet?
How many sites can I manage?
Will the revenue estimate hold up in front of a client?
Is it GDPR friendly?
still guessing?
Bring a number in dollars to your next client meeting
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