Bootstrap

Category - UI Frameworks

Bootstrap is a popular free and open-source web framework designed for creating responsive mobile-first web sites.


We have discovered  3,348,023 live websites   are using Bootstrap.

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Technology usage statistics

Websites using Bootstrap:3,348,023 websites
Most popular in: United States
Market position in UI Frameworks category:#2
Market share in UI Frameworks:27.39%
Most popular version:3.3.7

Security vulnerabilites

Known security issues associated with Bootstrap
PublishedCVETitleDomains
Jul, 2018CVE-2018-14040In Bootstrap before 4.1.2, XSS is possible in the collapse data-parent attribute.458,137
Jul, 2018CVE-2018-14041In Bootstrap before 4.1.2, XSS is possible in the data-target property of scrollspy.458,137
Jul, 2018CVE-2018-14042In Bootstrap before 4.1.2, XSS is possible in the data-container property of tooltip.458,137
Jul, 2024CVE-2024-6485XSS in Bootstrap button component376,134
Feb, 2019CVE-2019-8331In Bootstrap before 3.4.1 and 4.3.x before 4.3.1, XSS is possible in the tooltip or popover data-tem...322,729
Jan, 2019CVE-2018-20676In Bootstrap before 3.4.0, XSS is possible in the tooltip data-viewport attribute.322,729
Jan, 2019CVE-2018-20677In Bootstrap before 3.4.0, XSS is possible in the affix configuration target property.322,729
May, 2025CVE-2025-1647XSS in Bootstrap title attribute for Tooltip and Popover61,461

Technology adoption

Recent changes in Bootstrap usage.
Websites that added Bootstrap 87,199
Websites that dropped Bootstrap 2,829,814
Websites that changed version of Bootstrap  125,356

Available Reports


Technology Information


Major Versions

  • 5.xx (52 subversions, 248,687 domains)
  • 4.xx (53 subversions, 267,708 domains)
  • 3.xx (38 subversions, 364,564 domains)
  • 2.xx (31 subversions, 18,644 domains)

Website Distribution by Country

Number of websites using Bootstrap
United States997,492 websites


Germany283,335 websites
Russia186,349 websites
France173,220 websites
GB140,292 websites
Netherlands118,781 websites
Italy104,034 websites
Japan79,842 websites
India79,000 websites
Poland78,294 websites

Website Distribution by TLD

Number of websites using Bootstrap
.com1,319,291 websites
.de163,969 websites
.ru154,594 websites
.org152,397 websites
.net107,385 websites
.co.uk87,743 websites
.nl87,152 websites
.it81,058 websites
.fr66,824 websites
.pl60,848 websites

Bootstrap Versions

sorted by popularity
3.3.7154,572 websites
5.3.359,957 websites
4.3.157,086 websites
456,278 websites
3.4.154,378 websites
3.3.637,357 websites
4.4.131,275 websites
5.3.228,932 websites
3.3.526,341 websites
4.1.324,499 websites

See all Bootstrap versions ...

Top Websites Using Bootstrap

A look at the most popular websites built with Bootstrap
DomainCountryRankContacts
sistemas.ufsc.br Brazil37
jsdelivr.com United States151
networksolutions.com United States174
matomo.org United States242
bluehost.com United States251
e-recht24.de Germany266
See full domain list

Always Used together



Alternative Technologies


jQuery UI: Total 5,650,767 domains found using jQuery UI
Revslider: Total 1,539,351 domains found using Revslider
Tailwind CSS: Total 770,292 domains found using Tailwind CSS
UIKit: Total 169,637 domains found using UIKit
ZURB Foundation: Total 82,594 domains found using ZURB Foundation
YUI: Total 64,508 domains found using YUI
SvelteKit: Total 52,617 domains found using SvelteKit
Telerik DevCraft: Total 43,877 domains found using Telerik DevCraft
CivicTheme: Total 41,837 domains found using CivicTheme
MUI: Total 37,372 domains found using MUI

FAQ

Bootstrap falls under the category of UI Frameworks.
WebTechSurvey systematically indexes websites and their technologies. Users can find websites using Bootstrap through the WebTechSurvey platform.
There are currently 58,850,305 live websites that use Bootstrap.
Bootstrap holds 0.27% market share in the UI Frameworks category.
The main competitors to Bootstrap include jQuery UI, Revslider, Tailwind CSS, and UIKit.
Bootstrap has a known security vulnerabilities: CVE-2025-1647, CVE-2024-6485, CVE-2019-8331, and CVE-2018-20676.