Bootstrap site speed
How fast Bootstrap websites load on a phone, from Google PageSpeed tests of 903 Bootstrap sites, and which popular ones are slowest. Use it to benchmark your own site, or to find Bootstrap sites that need speed work.
Real users: 22% of the 745 Bootstrap sites with Chrome UX Report data are rated fast overall (good loading, responsiveness and layout stability).
Slowest popular Bootstrap sites
Lowest mobile PageSpeed scores among Bootstrap 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 |
|---|---|---|---|---|
 Frost & Sullivan frost.com | – | 1 | 9.1s | 7.0 MB |
 BLAZE - Cannabis Dispensary POS Software blaze.me | – | 2 | 29.9s | 13.1 MB |
 Bavarian Inn bavarianinn.com | – | 2 | 16.7s | 8.0 MB |
 ConectCar conectcar.com | – | 7 | 20.9s | 7.2 MB |
 Sandro – Official Website sandro-paris.com | – | 9 | 17.1s | 3.6 MB |
 Harris Health System harrishealth.org | – | 11 | 25.4s | 6.6 MB |
 Casanet casanet.ma | – | 14 | 15.8s | 4.9 MB |
Casadiaz casadiaz.com.mx | – | 15 | 29.5s | 11.9 MB |
University of Louisville louisville.edu | – | 16 | 10.6s | 3.1 MB |
 Academy Sports + Outdoors academy.com | Retail | 17 | 13.4s | 12.9 MB |
 Cincpro cincpro.com | – | 17 | 26.4s | 6.9 MB |
 Sally Beauty Holdings sallybeauty.com | – | 18 | 19.2s | 18.2 MB |
 GFS Chemicals gfschemicals.com | – | 18 | 33.6s | 4.9 MB |
 Edenred UAE edenred.ae | – | 18 | 17.9s | 9.4 MB |
 Bottlestore bottlestore.com | – | 19 | 25.4s | 4.7 MB |
 American University of Beirut aub.edu.lb | – | 20 | 32.4s | 8.5 MB |
Boscovs boscovs.com | – | 22 | 22.0s | 5.4 MB |
 Apricot UK apricotonline.co.uk | – | 23 | 7.0s | 12.9 MB |
 Catch Restaurants catchrestaurants.com | – | 23 | 39.3s | 16.5 MB |
 Forum Health LLC forumhealth.com | – | 23 | 23.6s | 7.2 MB |
 Program Jaminan Sosial Tenaga Kerja bpjsketenagakerjaan.go.id | – | 24 | 5.7s | 12.4 MB |
American Association of Colleges of Nursing aacnnursing.org | – | 24 | 19.1s | 3.9 MB |
 Central Park Jakarta centralparkjakarta.com | – | 24 | 45.0s | 22.6 MB |
 Brightsun brightsun.co.in | – | 24 | 24.1s | 4.6 MB |
 Freyr Solutions freyrsolutions.com | – | 25 | 9.8s | 5.3 MB |
Every slow Bootstrap site, as a list
All Bootstrap 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 Bootstrap sites load most
- Google Tag Manager78%
- Google Fonts71%
- Google Analytics65%
- Google/Doubleclick Ads56%
- Other Google APIs/SDKs52%
- Google CDN35%
- Cloudflare CDN32%
- Facebook30%
- JSDelivr CDN28%
- Bing Ads16%
Fastest popular Bootstrap sites
- Boart Longyear boartlongyear.com100
- LoanMart 800loanmart.com93
- Ksolves India Ltd. ksolves.com90
- Emizentech emizentech.com89
- Amneal (Switzerland) amneal.com89
- Acuity Analytics acuityanalytics.com89
- Bauhaus bauhaus.se85
- Altruist Technologies – Digital Transformation & BPO Leader altruistindia.com83
- Al Ansari Exchange alansariexchange.com83
- Altisource altisource.com79
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 Bootstrap. Updated October 2026.
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