Vercel site speed
How fast Vercel websites load on a phone, from Google PageSpeed tests of 223 Vercel sites, and which popular ones are slowest. Use it to benchmark your own site, or to find Vercel sites that need speed work.
Real users: 32% of the 182 Vercel sites with Chrome UX Report data are rated fast overall (good loading, responsiveness and layout stability).
Slowest popular Vercel sites
Lowest mobile PageSpeed scores among Vercel sites in the Tranco top million. One lab test each, so a score can move from day to day.
| Site | Industry | Mobile score | LCP | Page weight |
|---|---|---|---|---|
 Mason getmason.io | – | 15 | 9.2s | 2.9 MB |
 Meril Life Sciences (India) merillife.com | – | 15 | 13.6s | 14.5 MB |
Bandainamcoent bandainamcoent.asia | – | 16 | 34.7s | 15.1 MB |
Neuberger nb.com | Financial services | 17 | 18.3s | 7.7 MB |
 PostHog posthog.com | – | 23 | 30.2s | 6.3 MB |
 ArtNight artnight.com | – | 24 | 28.8s | 10.5 MB |
 Beavercreek beavercreek.com | – | 25 | 15.9s | 4.6 MB |
 Bajaj Auto bajajauto.com | Automotive | 27 | 20.4s | 4.6 MB |
 Black Kite blackkite.com | – | 27 | 34.1s | 7.1 MB |
Airtable airtable.com | Software as a service | 28 | 17.8s | 6.4 MB |
Aggreko aggreko.com | Distributed generation | 28 | 19.5s | 4.5 MB |
Cardrona & Treble Cone cardrona-treblecone.com | – | 29 | 19.7s | 13.2 MB |
 Ayala Land Inc. ayalaland.com | – | 30 | 14.5s | 4.5 MB |
Ramp ramp.com | Fintech | 31 | 6.2s | 14.3 MB |
 ABBYY abbyy.com | Software | 31 | 13.0s | 1.9 MB |
 Attio attio.com | – | 31 | 19.1s | 5.2 MB |
 Convoso convoso.com | – | 31 | 12.0s | 2.6 MB |
AudioEye audioeye.com | – | 32 | 11.9s | 5.8 MB |
99 99app.com | Taxi service | 32 | 19.4s | 2.8 MB |
 Cornerstone OnDemand cornerstoneondemand.com | – | 32 | 20.9s | 4.4 MB |
 Airtime airtime.com | – | 32 | 11.9s | 5.6 MB |
 Eleiko eleiko.com | Retail | 32 | 13.2s | 4.1 MB |
 Appsmith appsmith.com | – | 33 | 14.7s | 23.4 MB |
 Baggu baggu.com | – | 33 | 16.2s | 4.1 MB |
Alltech (Ireland) alltech.com | – | 34 | 20.7s | 4.0 MB |
Every slow Vercel site, as a list
All Vercel sites scoring under 50 on mobile, filtered by industry, country or popularity, with what slows each one down, company details and contacts. Credits included to start.
Third parties Vercel sites load most
- Google Tag Manager78%
- Google Analytics59%
- Google/Doubleclick Ads57%
- Other Google APIs/SDKs43%
- Facebook34%
- Bing Ads32%
- Google Fonts27%
- Clarity26%
- LinkedIn Ads25%
- Hubspot17%
Fastest popular Vercel sites
- CoverMyMeds covermymeds.com94
- Exodus Wallet exodus.com92
- Bungalow bungalow.com83
- Niu Technologies niu.com78
- FC Lugano fclugano.com78
- EMotorad emotorad.com75
- Association of Mature American Citizens amac.us72
- CBT Nuggets cbtnuggets.com71
- Close close.com70
- Celsius Network celsius.network70
How this is measured
Each site's home page is tested with Google PageSpeed Insights (Lighthouse, simulated mid-range phone on a slow 4G connection) when it's enriched; real-user ratings come from the Chrome UX Report where Google has enough visits. Only sites in the Tranco top million are named. See also websites using Vercel. Updated October 2026.
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