Comparison

Bootstrap vs Preact

On the evidence we track, Preact leads this comparison with a composite score of 81/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Bootstrap full profile →Preact full profile →

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Bootstrap71

★Preact81

Attribute comparison across 2 tools
Attribute	Bootstrap	PreactLeader
Vioscale score	71 / 100medium · 73%	81 / 100medium · 72%
Pricing
Free tierpricing.free_tier	✓	-
Modelpricing.model	commercial	commercial
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	-
Security
Scorecardsecurity.scorecard	7	5.7
Vulnerabilitiessecurity.vulnerabilities	Count: 12 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bootstrap&per_page=100 · Last 12m: 0 · Max severity: MODERATE	Count: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=preact&per_page=100 · Last 12m: 1 · Max severity: HIGH
Adoption
Dependent reposadoption.dependent_repos	874,564	78,992
Github starsadoption.github_stars	174,650	38,834
Package downloads weeklyadoption.package_downloads_weekly	6,450,171	31,234,030
Activity
Commits last 30dactivity.commits_last_30d	14	100
Release
Cadence daysrelease.cadence_days	49	13
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	MDX	JavaScript
Content
Faqcontent.faq	8 items	-

Score

Vioscale score

Bootstrap71 / 100medium · 73%

Preact81 / 100medium · 72%

Pricing

Free tier

Bootstrap✓

Preact–

Model

Bootstrapcommercial

Preactcommercial

Price level

Bootstrapfree

Preactfree

Transparent

Bootstrap✓

Preact–

Security

Scorecard

Bootstrap7

Preact5.7

Vulnerabilities

BootstrapCount: 12 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bootstrap&per_page=100 · Last 12m: 0 · Max severity: MODERATE

PreactCount: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=preact&per_page=100 · Last 12m: 1 · Max severity: HIGH

Adoption

Dependent repos

Bootstrap874,564

Preact78,992

Github stars

Bootstrap174,650

Preact38,834

Package downloads weekly

Bootstrap6,450,171

Preact31,234,030

Activity

Commits last 30d

Bootstrap14

Preact100

Release

Cadence days

Bootstrap49

Preact13

History

Bootstrap20 items

Preact20 items

License

Spdx

BootstrapMIT

PreactMIT

Language

Primary

BootstrapMDX

PreactJavaScript

Content

Faq

Bootstrap8 items

Preact–

Capabilities

Feature-by-feature on the axes that matter for frontend ui frameworks. “-” means undocumented, not absent.

Capability comparison for Frontend UI Frameworks
Capability	Bootstrap	Preact
Core
Paradigm	CSS and JavaScript component library	Virtual DOM component library
Reusable component model	✓	✓
Rendering
Virtual DOM	-	✓
Signals / fine-grained reactivity	-	-
SSR support	-	✓
DX
First-class TypeScript	-	-
State
Built-in state management	-	✓
Ecosystem
Official router	-	-
Performance
Runtime size	Small (10–40kb)	Tiny (<10kb)

Core

Paradigm

BootstrapCSS and JavaScript component library

PreactVirtual DOM component library

Reusable component model

Bootstrap✓

Preact✓

Rendering

Virtual DOM

Bootstrap-

Preact✓

Signals / fine-grained reactivity

Bootstrap-

Preact-

SSR support

Bootstrap-

Preact✓

First-class TypeScript

Bootstrap-

Preact-

State

Built-in state management

Bootstrap-

Preact✓

Ecosystem

Official router

Bootstrap-

Preact-

Performance

Runtime size

BootstrapSmall (10–40kb)

PreactTiny (<10kb)

What each one is

The product in its own terms, so the numbers below have context.

Bootstrap

Bootstrap is a front-end framework and library that provides pre-built HTML components, CSS styling utilities, and JavaScript plugins for constructing modern web applications. It simplifies responsive design with a grid system and standardized UI components.

Independently observed

Preact

Leader

A minimal virtual DOM library that provides a React-compatible API with significantly reduced file size. Preact delivers performance-focused component development without the overhead of traditional frameworks.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Bootstrap

FreeFree tier

Free and open source

as of 2026-08-14verify ↗

Preact

Leader

Open source

as of 2026-08-13verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Bootstrap	Preact
WebPlatforms	✓	✓
Cloud / SaaSDeployment	✓	-

Platforms

Web

Bootstrap✓

Preact✓

Deployment

Cloud / SaaS

Bootstrap✓

Preact–

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.