The verdict in three sentences
With an INP of 420 ms and an LCP of 4.1 s on mobile, this Singapore company's website fails two of the three Core Web Vitals. An audit at 3,000 to 6,000 SGD followed by fixes at 7,000 to 20,000 SGD usually brings it back to green in 3 to 6 weeks, measured at the 75th percentile of CrUX field data. The expected gain, +8 to 15% form conversions, pays for the work within months on a site that generates quote requests.
Where your site stands: the 2026 thresholds
Google scores real visitor experience with three metrics, collected from Chrome users over a rolling 28 days. The benchmark is the 75th percentile: if 25% of your mobile visits are slow, the page fails. Lab tools like Lighthouse help with diagnosis, but only field data (CrUX) counts for ranking.
| Metric | Good | Needs improvement | Poor | Your site (mobile) |
|---|---|---|---|---|
| LCP (main content render) | 2.5 s or less | 2.5 - 4 s | Over 4 s | 4.1 s |
| INP (interaction responsiveness) | 200 ms or less | 200 - 500 ms | Over 500 ms | 420 ms |
| CLS (visual stability) | 0.1 or less | 0.1 - 0.25 | Over 0.25 | 0.08 |
| TTFB (server response) | 0.8 s or less | 0.8 - 1.8 s | Over 1.8 s | 1.3 s |
| Homepage weight | Under 1.5 MB | 1.5 - 3 MB | Over 3 MB | 3.4 MB |
| Third-party JavaScript | Under 5 scripts | 5 - 10 scripts | Over 10 scripts | 14 scripts |
A 420 ms INP almost always points to a saturated main thread: live chat, analytics, carousels and the consent manager all running at the moment someone taps "Request a quote".
What a serious audit quote includes
A useful audit is more than a PageSpeed report exported to PDF. It must identify the templates at fault (home, product pages, service pages, form), price each fix and rank it by impact.
| Deliverable | Essential audit (3,000 SGD) | Full audit (6,000 SGD) |
|---|---|---|
| CrUX and Search Console analysis by template | Yes | Yes |
| Interaction profiling (INP) | 3 pages | 8 to 10 pages |
| Third-party script inventory and cost | Yes | Yes, with deferred loading plan |
| Server, cache and CDN review | Summary | Detailed with target configuration |
| Prioritised, priced fix plan | Yes | Yes, with effort in days |
| RUM monitoring setup | No | Yes, 3-month dashboard |
| Team debrief | 1 h video call | Half-day workshop |
Fixes are then priced from the diagnosis. You can also choose a monthly performance retainer, typically 1,500 to 3,500 SGD per month, which bundles fixes and monitoring. The table below shows the ranges we see on B2B sites in 2026.
| Typical fix | Indicative cost (SGD) | Target metric | Usual gain |
|---|---|---|---|
| Responsive AVIF/WebP images + hero preload | 1,400 - 3,400 | LCP | -0.8 to -1.5 s |
| Caching and CDN (Singapore edge) | 1,000 - 2,500 | TTFB, LCP | -0.3 to -0.7 s |
| Deferred third-party scripts | 1,700 - 5,000 | INP | -100 to -200 ms |
| Breaking up long JavaScript tasks | 2,500 - 6,800 | INP | -80 to -150 ms |
| Quote form rebuild | 1,400 - 4,200 | INP, conversion | +5 to 10% submissions |
| Self-hosted, preloaded fonts | 500 - 1,400 | CLS, LCP | -0.1 to -0.3 s |
Mini case study
Wei Ling, digital lead at an industrial supplier in Singapore, receives 300 quote requests a month through the website. She orders a full audit at 6,000 SGD and 14,000 SGD of fixes, 20,000 SGD in total. Six weeks later, mobile LCP falls to 2.2 s and INP to 170 ms. Form submissions rise 10%, or 30 extra requests a month. With a 5% close rate and an average margin of 5,000 SGD per deal, that is 7,500 SGD of extra monthly margin. The investment pays back in under 3 months. A retainer at 2,500 SGD per month would have reached the same result more gradually over about 8 months.
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FAQ
How long before Search Console shows green metrics?
CrUX data covers a rolling 28 days. Allow 4 weeks after the fixes go live for the 75th percentile to flip, so 3 to 6 weeks of work then about a month of measurement.
Is a Lighthouse score of 95 enough?
No. Lighthouse measures one simulated visit on one device. A site can score 95 in the lab and still show a 400 ms INP on your clients' real phones, which is the case for about 1 in 3 B2B sites we audit.
Do we need a rebuild to fix INP?
Rarely. In 80% of cases, targeted fixes (third-party scripts, long tasks, form) are enough for 7,000 to 20,000 SGD. A rebuild makes sense if the theme or page builder ships more than 2 MB of JavaScript.
One-off audit or monthly retainer?
A one-off audit suits a site with a clear backlog of problems. A retainer at 1,500 to 3,500 SGD per month suits teams shipping frequent releases, where regressions appear every few weeks.
Do Core Web Vitals really affect rankings?
They are part of page experience signals: the ranking effect is moderate, but the conversion effect is direct. Each second of LCP saved usually lifts submission rates by 3 to 7%.
Let's scope your project. We audit your B2B website on real user data and price every fix, for an indicative budget of 3,000 to 6,000 SGD for the audit and a return to green in 3 to 6 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
