Your mobile pages take forever to render. Visitors leave before they ever see the offer.
CORE WEB VITALS OPTIMIZATION FOR B2B SAAS
Core web vitals optimization that fixes what’s costing you rankings and conversions
LCP, INP and CLS diagnosed against real-user field data and fixed inside your stack — by the same team that runs your SEO and tracking, so the fix compounds instead of drifting back to red the next quarter.
5.0 · 15+ reviews from
Michal Glinka
Marketing Consultant & Project Manager
You'll meet me — not a sales rep. I check your GA4 and tags before every call.
- B2B teams in Oslo, Stockholm, London and NYC
Trusted by B2B teams that measure marketing in revenue
The situation
You know the score is red. You don’t know who owns fixing it.
Everyone knows LCP, INP and CLS are failing. Nobody on the team owns fixing them, and it keeps sliding to next quarter's dev backlog.
You rank on page two or three for the terms that matter. Google's page-experience signals are working against you, not for you.
Search Console shows crawl and indexation problems — and nobody has connected them to the site's Core Web Vitals.
You're mid-migration or just shipped a redesign, and Core Web Vitals is the thing that could quietly undo the rankings you already have.
You've had a speed audit before. It listed the problems. Nobody had the engineering hours to fix them.
Why Growston
Most vendors hand you a Core Web Vitals report. We also ship the fix.
A score tells you what's slow. It doesn't rank you, and it doesn't fix itself. Growston pairs the diagnostic with the engineering team that ships the fix inside your stack — not a PDF you forward to a dev queue.
A typical Core Web Vitals vendor
- Audit PDF listing every LCP, INP and CLS issue — no fix included
- Reports the Lighthouse lab score only
- Optimizes speed in isolation from SEO and tracking
- One-off audit, no ownership after handoff
- Recommends a CDN or plugin and moves on
Growston
- Audit plus the fixes shipped in your stack: WordPress, Webflow or custom
- Reports lab score and real-user field data (CrUX) — the numbers Google actually uses to rank you
- Fixes tied to the same SEO and analytics team already running the rest of your site, so nothing breaks downstream
- A named engineer who owns the fix and re-tests it after shipping
- Ships the CDN, caching and image-pipeline changes, then verifies Core Web Vitals passes in Search Console
What we do
A Core Web Vitals fix that’s shipped, verified and tied to the rest of your stack
Growston’s Core Web Vitals Audit is a full-funnel technical fix — diagnosis, implementation and re-verification — run by the team that also owns your SEO, GA4/GTM and CMS.
LCP diagnosis and fix
Hero images, server response time and render-blocking resources — the load-time signal Google weighs most heavily.
INP and interaction responsiveness
Third-party scripts, main-thread blocking and JS execution that make a page feel slow to touch, even after it's loaded.
CLS and layout stability
Image and ad dimensions, font-loading behavior and dynamic content that make a page jump while someone's reading it.
Field data vs. lab data, reconciled
CrUX real-user data checked against Lighthouse lab scores and wired into your existing tracking, not a separate tool.
Fixes shipped in your stack
Implemented directly in WordPress, Webflow or a custom build — not handed off as a ticket for your dev queue.
Indexation and crawl impact review
A check on whether failing Core Web Vitals are also suppressing crawl budget or indexation on your best pages.
How it works
From a red score to a verified fix in four steps
Every step produces something you keep — whether or not you continue with us.
01
Audit
Full Core Web Vitals diagnostic across your key templates, devices and real-user (CrUX) field data — plus a review of what's specifically dragging LCP, INP and CLS.
You receive
A written findings document ranking every issue by ranking and conversion impact — yours to keep regardless of what happens next.
02
Plan (30/60/90)
A fix roadmap scoped to your CMS and your dev team's actual capacity — not a generic best-practice checklist.
You receive
A roadmap a developer can act on without a second meeting.
03
Build & Launch
The fixes shipped in your stack — image pipeline, caching, render-blocking scripts, layout stability — by engineers who also run your SEO and tracking.
You receive
A site that passes Core Web Vitals thresholds in the field, not just in a lab test.
04
Optimize & Report
Ongoing monitoring against the field-data thresholds Google actually uses, re-tested after each release so a new feature doesn't quietly undo the fix.
You receive
A monthly Core Web Vitals status tied to rankings and conversion impact, not a static screenshot.
Let's meet
Review first, written scope within 3 business days.
How the first review works
We do the homework before we meet
We analyze your site before we meet — so the conversation starts at your numbers, not at zero.
Before the call: We pull your live field data (CrUX) and Lighthouse lab score for your key templateshomepage, pricing, product pages — before we meet.
On the call: 30 minutes on what's failing, why, and what we'd fix first. Not a slide deck.
After: A written scope within 3 business daysthe fixes, the sequence and the price. Yours to keep either way.
No Core Web Vitals data yet? The call covers how to pull it and what a passing score looks like for your traffic volume.
Pre-Meeting Audit
| PageSpeed | 45/100 |
|---|---|
| Core Web Vitals | Failed |
| Index Coverage | 78% |
| Crawl Budget | Optimized |
Results
Real results from client accounts
Transparency
What your monthly report looks like
A live dashboard plus a written narrative — what’s passing, what’s still failing, and what we’re shipping next. Tied to the same field-data thresholds Google uses to rank you, not a static Lighthouse screenshot.
Clients
What B2B teams say about Growston
What you get
What you get, month by month
-
A full Core Web Vitals diagnostic across your key templates, using lab data (Lighthouse) and real-user field data (CrUX)
-
A written findings document ranking every LCP, INP and CLS issue by ranking and conversion impact — yours to keep either way
-
A fix roadmap scoped to your CMS (WordPress, Webflow or custom) and your dev team's actual capacity
-
The fixes shipped in your stack by the same team that runs your SEO and analytics — not handed off as a ticket
-
Re-testing against field-data thresholds after every release, so a new feature doesn't quietly undo the fix
-
A monthly Core Web Vitals status tied to rankings and conversion impact, not a static screenshot
The alternatives
The honest comparison
| Growston | In-house hire | Traditional web/dev agency | Freelance developer | |
|---|---|---|---|---|
| Cost | Fixed-scope audit plus implementation, priced after we've seen your templates | A senior performance engineer's salary, recruiting time and ramp — before a single fix ships | Sold as a one-off project fee, with the fix usually scoped separately from the audit | Cheap per hour, but no one owns the outcome once the invoice is paid |
| Time to value | Weeks — audit to a shipped, re-tested fix | Months of hiring and ramp before the role even starts fixing anything | Slow — findings queue behind other client work | Fast to start, but no monitoring once the invoice is paid |
| Fix + verification together | Yes — the same team ships the fix and verifies it against your live Search Console data | Depends entirely on who you hire, and whether they also own SEO | Rarely — the audit team and the SEO/analytics team are usually different people | No — you still need someone to verify the fix against field data afterward |
| After launch | Monitored and re-tested after every release | Depends on retention | Account handed to juniors once the project closes | Unreliable continuity |
Fit check
Who this is for — and who it is not
Not a fit if you…
- You need results in 30 days
- Are pre-launch with no live site to audit yet
- Want a PDF report only, with your own team implementing the fixes
- Operate in crypto, gambling, adult content or MLM
Good fit if you…
- Are a B2B SaaS, scale-up or founder-led company in the Nordics, UK, US, or expanding into them
- Have failing Core Web Vitals hurting rankings or conversions and don't have in-house engineering capacity to fix it
- Are mid-redesign or mid-migration and want Core Web Vitals fixed before launch, not discovered after
- Are ready to give us CMS or hosting access so we can ship the fix, not just report on it
The people on your account
Named senior strategists — not „our team”
You meet the person who scopes the fix before you sign. They stay on the account after launch.
Tomasz Nowak
Project Manager
Controls timelines, deliverables, and keeps execution on track.
Karolina Wiśniewska
SEO Analyst
Builds and optimizes pages around live keyword and AI-search demand.
Michal Glinka
Dedicated Marketing Director
Sets growth strategy, prioritizes channels, and owns performance outcomes.
FAQ
Before you ask
What exactly is a Core Web Vitals audit?
A full diagnostic of LCP, INP and CLS across your key templates and devices, checked against both lab data (Lighthouse) and real-user field data (Chrome UX Report) — the numbers Google actually uses to rank you.
Why does this matter for a B2B SaaS company specifically?
Core Web Vitals is a confirmed Google ranking signal and a conversion factor. Buyers doing high-intent research on mobile leave slow pages before they see your offer, and a failing score can quietly cap rankings you’ve already earned through content and links.
What's the difference between lab data and field data?
Lab data (Lighthouse) is a single test run under controlled conditions. Field data (CrUX) is what your real visitors experienced over the last 28 days, on their actual devices and connections — and it’s what Google uses for ranking.
Do you just audit, or do you also fix the issues?
We ship the fix. An audit that ends in a PDF is a report, not a result — our engineers implement the LCP, INP and CLS fixes inside your CMS and re-test them afterward.
Do we need to give you access to our CMS or hosting?
Yes, to ship the fixes. If you only want the diagnostic, we scope that separately — but a finding nobody implements doesn’t move your rankings.
Does this replace our technical SEO work?
No. Core Web Vitals is one signal inside technical SEO. We scope it alongside Technical SEO and Website Speed Optimization when your issues go beyond page experience.
You're based in Warsaw — can you work inside our stack at our pace?
Yes. Growston operates from Warsaw specifically to serve Nordic and English-speaking B2B teams — the engineers who fix your Core Web Vitals are the same team that runs your SEO, tracking and reporting, on your cadence.
Next step
Book a meeting. Get a proposal.
- 30-minute call with a senior strategist
- Written proposal within 3 business days
- Scope, price, OKRs — no obligation
Michal Glinka
Marketing Consultant & Project Manager
Let's meet
Fill in the details and we will prepare a written proposal within 24 hours.