A vendor’s own website is an imperfect but useful signal. If they haven’t invested in a fast, mobile-friendly site for themselves, it’s worth asking what they’ll deliver for you. This checklist walks you through a free 2-minute check using Google’s own tool — no technical knowledge needed.
Why a Vendor’s Site Speed Matters
Over 70% of web traffic in Singapore happens on mobile phones. If a vendor’s marketing site loads slowly or jumps around on a phone screen, it creates a reasonable question: how much do they invest in the digital experience they sell?
This isn’t a disqualifier on its own. A company can run a slow marketing site and still deliver a solid SaaS product — those are different systems. But it’s a data point, and it costs you two minutes to check it.
Think of it the way you’d think about visiting a potential partner’s office. A messy reception area doesn’t mean their service is bad. But it’s a signal worth noting before you sign anything.
The 2-Minute Check
You’ll need the vendor’s website address (e.g. vendor-name.com.sg). That’s it.
Step 1: Open your browser and go to pagespeed.web.dev.
Step 2: Paste the vendor’s website address into the box and press Analyse.
Step 3: Wait about 30 seconds for the results to load.
Step 4: Click the Mobile tab at the top. This is important — the Desktop score is usually much higher and doesn’t reflect how your customers actually browse.
You’ll see a score from 0 to 100 and three specific measurements below it. Here’s what each one means in plain English.
The Three Numbers to Look At
LCP — How long until the main content loads
LCP stands for Largest Contentful Paint, but ignore the jargon. It simply measures how long it takes until the main thing on the page — usually a headline or image — appears. A visitor on a mobile phone is waiting for this.
- Good: under 2.5 seconds
- Needs work: over 4 seconds
INP — How quickly the page responds when you tap
INP stands for Interaction to Next Paint. It measures what happens after you tap a button or a link — how quickly does the page react? At 200ms, it feels instant. Above 500ms, it feels visibly sluggish.
- Good: under 200ms
- Needs work: over 500ms
CLS — How much things jump around as it loads
CLS stands for Cumulative Layout Shift. It measures whether elements on the page — buttons, text, images — move around while the page is loading. You’ve experienced this when you go to tap something and it shifts just as you tap it.
- Good: below 0.1
- Needs work: above 0.25
How to Read What You See
Each of the three numbers will have a colour label: Good (green), Needs Improvement (orange), or Poor (red).
You’ll also see a score from 0 to 100 at the top. This is the overall Lighthouse score — a lab-based simulation of how a phone browses the site.
A note on “real user data” vs lab results: About 68% of PSG-approved vendors we measured don’t have enough real visitor traffic for Google to show real-user data. When that happens, you’ll see a lab-simulated score instead. That’s normal and still useful — the Lighthouse score is what to look at in that case.
What the Score Actually Means
Here’s how to put the number in context:
| What it means | |
|---|---|
| 90 or above | Excellent — rare among PSG vendors |
| 60–89 | Above average — better than most PSG-approved vendors |
| 50–59 | Around the median — typical for the market |
| Below 50 | Below the median — worth raising in your conversation |
To put this in concrete terms: in our April 2026 benchmark of 278 PSG-approved vendors, the median mobile Lighthouse score was 47 out of 100. Only 9 vendors — about 3% — scored 90 or above. More than half scored below 50.
This means a vendor scoring 60 already beats more than half the PSG-approved vendor pool. A score of 80 puts them in rare company.
One caution worth noting: a vendor may claim their SEO is handled (strong Rank Math or Yoast scores, good meta tags) while the performance score is still poor. The two are separate systems — our sister site’s SEO Score 90, Performance 48: Why One Doesn’t Protect the Other unpacks why a clean SEO audit doesn’t fix a slow site.
The Right Question to Ask
Once you have the number, you don’t need to lead with it aggressively. A simple, informed question works well:
“We noticed your marketing site scores around X on Google PageSpeed for mobile. Will the solution you deploy for us be faster, and how do you measure that over time?”
This does three things. It shows you’re doing your homework. It gives the vendor a fair chance to explain. And it tells you something about how they think about performance — whether they have an answer ready, or whether the question surprises them.
A good vendor will have a clear answer. They may explain that the solution they deploy sits on different infrastructure, has different performance benchmarks, and that they monitor it actively. That’s a good sign.
A vendor who seems caught off guard by the question — or who dismisses it — is giving you information too.
The Important Caveat
A slow marketing site is a signal, not a verdict.
Many excellent SaaS products are hosted on fast, purpose-built infrastructure that has nothing to do with the vendor’s marketing website. The product you’re buying may run on a completely different stack. So use this check as a conversation starter, not as a reason to disqualify a vendor outright.
What you’re really testing is the vendor’s awareness and attitude. Do they know their own performance numbers? Do they have a thoughtful answer about how they’ll manage yours?
Checking the Score on Grantla
If you’d rather skip the manual check, Grantla’s PSG solution pages now show each vendor’s mobile performance score directly in the listing. You can compare vendors side by side without running the test yourself.
Related Guides
- Core Web Vitals Explained for Singapore SMEs — what LCP, INP, and CLS actually mean, in plain English
- PSG Vendor Mobile Performance Benchmark 2026 — aggregate data across all 278 PSG vendors
- 8 Red Flags When Shortlisting PSG Vendors — other pre-sales warning signs beyond site speed
- Is PSG Worth It? — honest ROI assessment before you apply
- PSG Common Mistakes to Avoid — what gets applications rejected
- Common Grant Pitfalls — mistakes to avoid when applying for Singapore grants
- Singapore Grants Glossary — key grant terms and definitions
- 本指南中文版 — 签约前如何检测PSG供应商的网站速度（中文）
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