WebSpeed
Speed auditbigcommerce.comNext.js
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bigcommerce.com loads faster with WebSpeed

Measured PageSpeed before and after WebSpeed optimization — no plugins, no migration.

Mobile · PageSpeed
30
→
29
Desktop · PageSpeed
55
→
57
+2
Screen filledNowWebSpeedSpeedup
Mobile8.2 s7.4 s1.1×
Desktop2.7 s2.7 s
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Your gains with WebSpeed Fast
1.1×
Speed Index 8.2 s → 7.4 s · mobile
Visually faster
−8%
≈ 1.4 → 1.2 g/visit
CO₂ per visit
Beyond the score
Stays up during outages
Cached delivery serves the last good version if your origin fails.
Absorbs traffic peaks
The proxy cache serves ready pages, so spikes don’t topple the origin.
Lighter on your hosting
Fewer origin hits and less third-party code on the critical path.
Lower CO₂ per visit
A lighter page transfers fewer bytes and burns less energy.
Speed metrics
MetricMobileDesktop
NowFastNowFast
FCPtarget ≤ 1.8s3.9 s2.0 s−50%0.6 s0.5 s−12%
LCPtarget ≤ 2.5s10.6 s11.7 s+10%1.9 s2.4 s+25%
TBTtarget ≤ 200ms3,290 ms610 ms−82%3,670 ms600 ms−84%
CLStarget ≤ 0.100.555+10076506%0.0090.012+27%
Speed Indextarget ≤ 3.4s8.2 s7.4 s−9%2.7 s2.7 s
TTItarget ≤ 3.8s17.1 s15.9 s−7%8.1 s4.2 s−48%
PageSpeed score3029-15557+2
What WebSpeed optimized · 1 changes
Next.js detected1 Resource hints✓ Server headers tuned✓ Errors handled gracefully

PageSpeed scores are measured by Google PageSpeed Insights and are not guaranteed: they vary run to run and depend on network, device and third-party code.

FAQ
How do we measure?
We test each configuration of your site — the original and with our optimizations — 2–3 times for mobile and desktop, and take the median rather than a single run, which filters out random spikes.
Why does my PageSpeed show different numbers?
We use Google Lighthouse — the same engine behind PageSpeed Insights. Differences come from the test server location, CDN cache state and Lighthouse version. Compare columns with each other here: the relative improvement is what matters.
Does speed affect Google rankings?
Core Web Vitals are a ranking factor since May 2021, but Google calls them a tiebreaker. The clearest gain is moving out of the Poor zone (score < 50); if you are already Good, further speed still cuts bounce and lifts conversion.
Pricing

Make the speed-up permanent

The before/after check is free and not one of these plans. Buy the report once and apply it yourself, or pick a plan and let the pipeline keep doing it.

RecommendedDownloadable report
Audit
€149 · one-time
DIY: you apply it
  • The same fixes Fast applies, written up as a guide you run yourself
  • Server settings, code changes and ready-to-paste head snippets
  • Before/after PageSpeed from the free check (PDF / HTML / MD)
  • Re-issued free for a year as your site changes
Get the audit

Not useful? Email us within 14 days and we refund it. A document, not a service — you apply it; Custom is the same work done for you.

Most popularSaaS subscription
Fast
from €9/mo
Zero-code, automatic
14-day free trial
  • The whole optimization pipeline, live
  • One site
  • Proxy or on-site SDK, no code changes
  • Cached delivery keeps your site up during origin outages
Request access

We connect it for you.

SaaS subscription
Growth
from €79/mo
For several sites at once
14-day free trial
  • Everything in Fast, across multiple sites
  • Priority cache — your pages stay warm
  • Support with a named contact
Request access

Agencies and multi-site owners.

SaaS + hands-on service
Custom
from €179/mo
Hand-tuned for your site
  • Everything in Growth
  • A config built by hand for your site
  • What only you can change, written up for your team
  • Set up, measured and maintained by us
Get a plan for my site

We look at your site by hand first, then keep it tuned. Six months minimum.

Subscriptions start with a 14-day free trial (Fast and Growth) and then run for a minimum of 6 months. You commit only after the trial — if you stop there, we switch the proxy off and your site is served from your own origin, exactly as before.