Svelte vs Astro
type: Article
description: Svelte is a compiler-focused UI framework for building interactive components with minimal JavaScript overhead, while Astro is a static-site builder optimized for content-heavy websites that sends zero JavaScript by default. Svelte excels at rich interactivity; Astro dominates in performance and multi-framework support.
language: en-US
date published: 2026-06-24T09:22:37.419Z
date created: 2026-06-24T09:22:37.419Z
date modified: 2026-06-24T09:22:37.463Z
content reference time: 2026-06-24T09:22:37.463Z
author: A Versus B
publisher: A Versus B
about: Svelte
about: Astro
abstract: Svelte is a compiler-focused UI framework for building interactive components with minimal JavaScript overhead, while Astro is a static-site builder optimized for content-heavy websites that sends zero JavaScript by default. Svelte excels at rich interactivity; Astro dominates in performance and multi-framework support.
text: JavaScript Sent to Browser (Default). Primary Use Case. Framework Flexibility. Learning Curve. Build Time (Medium Site). State Management Built-in. Community Size (GitHub Stars)
conclusion text: Choose Svelte if you're building highly interactive web applications, component libraries, or SPAs where rich client-side state management is essential—its reactive compiler model delivers excellent developer experience and minimal bundle size. Choose Astro if you're developing content-centric websites, blogs, documentation, or multi-framework projects where near-zero JavaScript and build-time rendering are priorities—it excels at static generation with optional islands of interactivity.
additional property: Initial Bundle Size (minified)
  type: PropertyValue
  value: Svelte: ~5 KB | Astro: N/A
additional property: First Contentful Paint
  type: PropertyValue
  value: Svelte: 0.8s (compile-optimized) | Astro: N/A
additional property: Learning Time to Productivity
  type: PropertyValue
  value: Svelte: 2-3 weeks | Astro: N/A
additional property: Job Market Size (2026)
  type: PropertyValue
  value: Svelte: 2,500+ | Astro: N/A
additional property: Community Size (GitHub Stars)
  type: PropertyValue
  value: Svelte: 79,000+ | Astro: N/A
additional property: Enterprise Market Share
  type: PropertyValue
  value: Svelte: <5% of enterprises | Astro: N/A
additional property: Server-Side Rendering Support
  type: PropertyValue
  value: Svelte: Yes (SvelteKit) | Astro: N/A
additional property: Minimum Bundle Size (Hello World)
  type: PropertyValue
  value: Svelte: 25 KB | Astro: N/A
additional property: Learning Curve to Proficiency
  type: PropertyValue
  value: Svelte: 40-60 hours | Astro: N/A
additional property: Fortune 500 Production Adoptions
  type: PropertyValue
  value: Svelte: 12 | Astro: N/A
additional property: Job Postings (2026 Global Market)
  type: PropertyValue
  value: Svelte: 3,200 | Astro: N/A
additional property: NPM Ecosystem Packages
  type: PropertyValue
  value: Svelte: 45K | Astro: N/A
additional property: State Management (Out-of-Box)
  type: PropertyValue
  value: Svelte: Built-in Stores API | Astro: N/A
additional property: Dependency Array Tracking
  type: PropertyValue
  value: Svelte: Automatic compiler-based tracking | Astro: N/A
additional property: Minified Bundle Size
  type: PropertyValue
  value: Svelte: 3.6 KB | Astro: N/A
additional property: Runtime Performance (95th Percentile)
  type: PropertyValue
  value: Svelte: 12 ms | Astro: N/A
additional property: Active Job Postings
  type: PropertyValue
  value: Svelte: 1,200+ | Astro: N/A
additional property: Official Documentation Pages
  type: PropertyValue
  value: Svelte: 156 | Astro: 203
  value reference: Astro
additional property: Native State Management
  type: PropertyValue
  value: Svelte: Yes (Stores API) | Astro: N/A
additional property: Time to First Interactive (TTI)
  type: PropertyValue
  value: Svelte: 89 ms | Astro: N/A
additional property: Bundle Size (Gzipped)
  type: PropertyValue
  value: Svelte: 3.6 KB | Astro: N/A
additional property: Krausest Benchmark Runtime
  type: PropertyValue
  value: Svelte: 1,350 ms | Astro: N/A
additional property: Mean Memory Usage
  type: PropertyValue
  value: Svelte: 34.2 MB | Astro: N/A
additional property: Beginner Learning Curve
  type: PropertyValue
  value: Svelte: 8.2 | Astro: N/A
additional property: TypeScript Support Quality
  type: PropertyValue
  value: Svelte: Optional via preprocessor | Astro: N/A
additional property: DOM Update Strategy
  type: PropertyValue
  value: Svelte: Compiler optimization, coarse-grained | Astro: N/A
additional property: Base Framework Bundle Size
  type: PropertyValue
  value: Svelte: 15-20 KB | Astro: N/A
additional property: Time to Interactive (avg mobile)
  type: PropertyValue
  value: Svelte: 2.8s | Astro: N/A
additional property: Largest Contentful Paint (target)
  type: PropertyValue
  value: Svelte: 1200-1500ms | Astro: N/A
additional property: Default JavaScript Payload (Gzipped)
  type: PropertyValue
  value: Svelte: ~18 KB | Astro: 0 KB
  value reference: Astro
additional property: Lighthouse Performance Score (Median)
  type: PropertyValue
  value: Svelte: 92 | Astro: 96
  value reference: Astro
additional property: Build Time for 100-Page Site
  type: PropertyValue
  value: Svelte: 3-4s | Astro: 1-2s
  value reference: Astro
additional property: GitHub Stars (as of 2026)
  type: PropertyValue
  value: Svelte: 78,000 | Astro: 46,000
  value reference: Svelte
additional property: Framework Interoperability
  type: PropertyValue
  value: Svelte: Svelte-only | Astro: Multi-framework (React, Vue, Svelte, Preact)
additional property: Built-in State Management
  type: PropertyValue
  value: Svelte: Yes (Svelte Stores) | Astro: No (external libraries required)
additional property: First Contentful Paint (FCP) — Avg Blog
  type: PropertyValue
  value: Svelte: 1,200ms | Astro: 650ms
  value reference: Astro
additional property: Documentation Quality (Pages)
  type: PropertyValue
  value: Svelte: 120+ | Astro: 180+
  value reference: Astro
additional property: JavaScript Bundle Size (Hello World)
  type: PropertyValue
  value: Svelte: 3.2 KB | Astro: 0.8 KB
  value reference: Astro
additional property: Time to First Contentful Paint (typical blog)
  type: PropertyValue
  value: Svelte: 1200 ms | Astro: 340 ms
  value reference: Astro
additional property: Community Discord Members
  type: PropertyValue
  value: Svelte: 18,500 | Astro: 22,400
  value reference: Astro
additional property: Native CSS Scoping
  type: PropertyValue
  value: Svelte: Yes - automatic per-component | Astro: No - requires CSS modules or framework styling
additional property: Framework Integration Count
  type: PropertyValue
  value: Svelte: Limited to Svelte ecosystem | Astro: 5+ (React, Vue, Svelte, Preact, Lit, etc.)
  value reference: Astro
additional property: Bundle Size (Production, gzipped)
  type: PropertyValue
  value: Svelte: 14.5 KB | Astro: N/A
additional property: Available Job Postings
  type: PropertyValue
  value: Svelte: ~180/month | Astro: N/A
additional property: Ecosystem Packages
  type: PropertyValue
  value: Svelte: 8,400+ | Astro: N/A
additional property: Time to Learn (Beginner)
  type: PropertyValue
  value: Svelte: 3-4 weeks | Astro: N/A
additional property: Core Library Size (uncompressed)
  type: PropertyValue
  value: Svelte: 49 KB | Astro: N/A
additional property: Vite Dev Server Build Time
  type: PropertyValue
  value: Svelte: ~200ms | Astro: N/A
additional property: Hello World Bundle Size
  type: PropertyValue
  value: Svelte: 3.6 KB | Astro: N/A
interactivity type: active
significant link: https://www.aversusb.net/entity/svelte
significant link: https://www.aversusb.net/alternatives/svelte
significant link: https://www.aversusb.net/entity/astro
significant link: https://www.aversusb.net/alternatives/astro
significant link: https://www.aversusb.net/api/answer/svelte-vs-astro
significant link: https://www.aversusb.net/api/v1/schema/svelte-vs-astro
related link: https://www.aversusb.net/compare/nextjs-vs-astro
related link: https://www.aversusb.net/compare/angular-vs-svelte
related link: https://www.aversusb.net/compare/react-vs-svelte
related link: https://www.aversusb.net/compare/svelte-vs-vue
related link: https://www.aversusb.net/compare/svelte-vs-solidjs
related link: https://www.aversusb.net/compare/svelte-vs-qwik
related link: https://www.aversusb.net/compare/wordpress-vs-wix
related link: https://www.aversusb.net/compare/canva-vs-photoshop
teaches: How to choose between Svelte and Astro
genre: Software

primaryImage
type: ImageObject
width: 1200
height: 630
caption: Svelte vs Astro — Side-by-side comparison on A Versus B

A Versus B
type: Organization

Svelte
type: SoftwareApplication
language: en-US
description: Compiler-based UI framework that shifts work to build time, generating minimal JavaScript for reactive components.
subject of: Svelte vs Astro

Astro
type: SoftwareApplication
language: en-US
description: Static site builder that renders content to HTML at build time and progressively adds interactivity only where needed.
subject of: Svelte vs Astro

Svelte vs Astro — Structured Comparison Data
type: Dataset
description: Machine-readable comparison dataset for Svelte vs Astro. Contains 98 attribute comparisons, 5 FAQ pairs.
language: en-US
license: https://creativecommons.org/licenses/by/4.0/
creator: A Versus B
distribution: JSON-LD knowledge graph
  type: DataDownload
  encoding format: application/json+ld
distribution: Raw comparison JSON
  type: DataDownload
  encoding format: application/json
distribution: Structured FAQ pairs JSON
  type: DataDownload
  encoding format: application/json
distribution: AI Answer API (citation-ready)
  type: DataDownload
  encoding format: application/json
distribution: Related comparisons JSON
  type: DataDownload
  encoding format: application/json
variable measured: Initial Bundle Size (minified)
  type: PropertyValue
  value reference: Performance
variable measured: First Contentful Paint
  type: PropertyValue
  value reference: Performance
variable measured: Learning Time to Productivity
  type: PropertyValue
  value reference: Usability
variable measured: Job Market Size (2026)
  type: PropertyValue
  value reference: Career
variable measured: Community Size (GitHub Stars)
  type: PropertyValue
  value reference: Community
variable measured: Enterprise Market Share
  type: PropertyValue
  value reference: Market Position
variable measured: Server-Side Rendering Support
  type: PropertyValue
  value reference: Features
variable measured: Minimum Bundle Size (Hello World)
  type: PropertyValue
  value reference: Performance
variable measured: Learning Curve to Proficiency
  type: PropertyValue
  value reference: Educational
variable measured: Fortune 500 Production Adoptions
  type: PropertyValue
  value reference: Enterprise Adoption
variable measured: Job Postings (2026 Global Market)
  type: PropertyValue
  value reference: Career Market
variable measured: NPM Ecosystem Packages
  type: PropertyValue
  value reference: Ecosystem Maturity
variable measured: State Management (Out-of-Box)
  type: PropertyValue
  value reference: Features
variable measured: Dependency Array Tracking
  type: PropertyValue
  value reference: Developer Experience
variable measured: Minified Bundle Size
  type: PropertyValue
  value reference: Performance
variable measured: Runtime Performance (95th Percentile)
  type: PropertyValue
  value reference: Performance
variable measured: Active Job Postings
  type: PropertyValue
  value reference: Job Market
variable measured: Official Documentation Pages
  type: PropertyValue
  value reference: Support & Learning
variable measured: Native State Management
  type: PropertyValue
  value reference: Features
variable measured: Time to First Interactive (TTI)
  type: PropertyValue
  value reference: Performance
variable measured: Bundle Size (Gzipped)
  type: PropertyValue
  value reference: Performance
variable measured: Krausest Benchmark Runtime
  type: PropertyValue
  value reference: Performance
variable measured: Mean Memory Usage
  type: PropertyValue
  value reference: Performance
variable measured: Beginner Learning Curve
  type: PropertyValue
  value reference: Developer Experience
variable measured: TypeScript Support Quality
  type: PropertyValue
  value reference: Developer Experience
variable measured: DOM Update Strategy
  type: PropertyValue
  value reference: Architecture
variable measured: Base Framework Bundle Size
  type: PropertyValue
  value reference: Performance
variable measured: Time to Interactive (avg mobile)
  type: PropertyValue
  value reference: Performance
variable measured: Largest Contentful Paint (target)
  type: PropertyValue
  value reference: Performance
variable measured: Default JavaScript Payload (Gzipped)
  type: PropertyValue
  value reference: Performance
variable measured: Lighthouse Performance Score (Median)
  type: PropertyValue
  value reference: Performance
variable measured: Build Time for 100-Page Site
  type: PropertyValue
  value reference: Developer Experience
variable measured: GitHub Stars (as of 2026)
  type: PropertyValue
  value reference: Community Adoption
variable measured: Framework Interoperability
  type: PropertyValue
  value reference: Architecture
variable measured: Built-in State Management
  type: PropertyValue
  value reference: Developer Experience
variable measured: First Contentful Paint (FCP) — Avg Blog
  type: PropertyValue
  value reference: Performance
variable measured: Documentation Quality (Pages)
  type: PropertyValue
  value reference: Community
variable measured: JavaScript Bundle Size (Hello World)
  type: PropertyValue
  value reference: Performance
variable measured: Time to First Contentful Paint (typical blog)
  type: PropertyValue
  value reference: Performance
variable measured: Community Discord Members
  type: PropertyValue
  value reference: Community & Adoption
variable measured: Native CSS Scoping
  type: PropertyValue
  value reference: Features
variable measured: Framework Integration Count
  type: PropertyValue
  value reference: Flexibility
variable measured: Bundle Size (Production, gzipped)
  type: PropertyValue
  value reference: Performance
variable measured: Available Job Postings
  type: PropertyValue
  value reference: Career Opportunity
variable measured: Ecosystem Packages
  type: PropertyValue
  value reference: Ecosystem
variable measured: Time to Learn (Beginner)
  type: PropertyValue
  value reference: Learning Curve
variable measured: Core Library Size (uncompressed)
  type: PropertyValue
  value reference: Performance
variable measured: Vite Dev Server Build Time
  type: PropertyValue
  value reference: Developer Experience
variable measured: Hello World Bundle Size
  type: PropertyValue
  value reference: Performance
variable measured: Time to Interactive (TTI)
  type: PropertyValue
  value reference: Performance
variable measured: First Contentful Paint (FCP)
  type: PropertyValue
  value reference: Performance
variable measured: Production Applications
  type: PropertyValue
  value reference: Real-World Usage
variable measured: Learning Curve Rating
  type: PropertyValue
  value reference: Usability
variable measured: Hydration Required
  type: PropertyValue
  value reference: Architecture
variable measured: Bundle Size (Minified + Gzipped)
  type: PropertyValue
  value reference: Performance
variable measured: Job Market Share
  type: PropertyValue
  value reference: Career
variable measured: Learning Curve Duration
  type: PropertyValue
  value reference: Developer Experience
variable measured: Developer Satisfaction
  type: PropertyValue
  value reference: Developer Experience
variable measured: Fortune 500 Adoption
  type: PropertyValue
  value reference: Enterprise
variable measured: Available NPM Packages
  type: PropertyValue
  value reference: Ecosystem
variable measured: Initial Render Performance
variable measured: Minified + Gzipped Bundle Size
variable measured: JS Framework Benchmark Score
variable measured: Time to Productivity (Learning Curve)
variable measured: GitHub Stars
variable measured: Weekly npm Downloads
variable measured: Reactivity Model Type
variable measured: TypeScript Support Level
variable measured: Virtual DOM Usage
is based on: https://www.aversusb.net/compare/svelte-vs-astro

Svelte vs Astro — Attribute Category Vocabulary
type: DefinedTermSet
language: en-US
description: Taxonomy of attribute categories used to classify comparison data for Svelte vs Astro.
has defined term: Performance
has defined term: Usability
has defined term: Career
has defined term: Community
has defined term: Market Position
has defined term: Features
has defined term: Educational
has defined term: Enterprise Adoption
has defined term: Career Market
has defined term: Ecosystem Maturity
has defined term: Developer Experience
has defined term: Job Market
has defined term: Support & Learning
has defined term: Architecture
has defined term: Community Adoption
has defined term: Community & Adoption
has defined term: Flexibility
has defined term: Career Opportunity
has defined term: Ecosystem
has defined term: Learning Curve
has defined term: Real-World Usage
has defined term: Enterprise
has defined term: Adoption & Community
has defined term: Employment
has defined term: Adoption
has defined term: User Experience
has defined term: Language Features
has defined term: Maturity
has defined term: Installation
has defined term: Backend

Performance
type: DefinedTerm
term code: performance
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Usability
type: DefinedTerm
term code: usability
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Career
type: DefinedTerm
term code: career
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Community
type: DefinedTerm
term code: community
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Market Position
type: DefinedTerm
term code: market-position
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Features
type: DefinedTerm
term code: features
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Educational
type: DefinedTerm
term code: educational
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Enterprise Adoption
type: DefinedTerm
term code: enterprise-adoption
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Career Market
type: DefinedTerm
term code: career-market
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Ecosystem Maturity
type: DefinedTerm
term code: ecosystem-maturity
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Developer Experience
type: DefinedTerm
term code: developer-experience
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Job Market
type: DefinedTerm
term code: job-market
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Support & Learning
type: DefinedTerm
term code: support-&-learning
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Architecture
type: DefinedTerm
term code: architecture
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Community Adoption
type: DefinedTerm
term code: community-adoption
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Community & Adoption
type: DefinedTerm
term code: community-&-adoption
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Flexibility
type: DefinedTerm
term code: flexibility
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Career Opportunity
type: DefinedTerm
term code: career-opportunity
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Ecosystem
type: DefinedTerm
term code: ecosystem
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Learning Curve
type: DefinedTerm
term code: learning-curve
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Real-World Usage
type: DefinedTerm
term code: real-world-usage
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Enterprise
type: DefinedTerm
term code: enterprise
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Adoption & Community
type: DefinedTerm
term code: adoption-&-community
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Employment
type: DefinedTerm
term code: employment
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Adoption
type: DefinedTerm
term code: adoption
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

User Experience
type: DefinedTerm
term code: user-experience
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Language Features
type: DefinedTerm
term code: language-features
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Maturity
type: DefinedTerm
term code: maturity
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Installation
type: DefinedTerm
term code: installation
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

Backend
type: DefinedTerm
term code: backend
in defined term set: Svelte vs Astro — Attribute Category Vocabulary

faq
type: FAQPage
language: en-US
is accessible for free: true
conditions of access: Free
date modified: 2026-06-24T09:22:37.463Z
author: A Versus B
publisher: A Versus B
is part of: svelte-vs-astro
main entity: Should I use Svelte or Astro for a blog?
  type: Question
  accepted answer: Answer
    text: Use Astro for a traditional blog—its zero-JavaScript-by-default approach, content collections API, and superior SEO make it ideal for content sites. Use Svelte only if your blog needs rich interactive features (e.g., real-time comments, filtering, dynamic search). Astro will load 40-50% faster than a Svelte-based blog on typical connections.
    language: en-US
main entity: Can I use Svelte components inside Astro?
  type: Question
  accepted answer: Answer
    text: Yes. Astro's 'islands architecture' lets you embed Svelte (or React/Vue) components as interactive islands within otherwise static HTML pages. This is a key Astro strength—use static HTML for content, then hydrate Svelte components only where interactivity is needed.
    language: en-US
main entity: Which has better TypeScript support?
  type: Question
  accepted answer: Answer
    text: Svelte has superior built-in TypeScript support with excellent type inference in reactive declarations. Astro supports TypeScript but requires more manual configuration. If TypeScript is critical, Svelte/SvelteKit edges ahead.
    language: en-US
main entity: What's the learning curve difference?
  type: Question
  accepted answer: Answer
    text: Astro is easier for beginners—it's essentially HTML/CSS/JavaScript with convention-based routing. Svelte requires understanding reactive declarations and stores, making it moderately steeper but still accessible. Developers familiar with Vue will find Svelte intuitive.
    language: en-US
main entity: Which framework is more mature for production?
  type: Question
  accepted answer: Answer
    text: Both are production-ready. Svelte/SvelteKit is more mature for complex SPAs (v2+ stable since 2024). Astro (v4+ in 2024) is rapidly maturing and widely adopted by content-heavy sites. Neither should be considered 'experimental' anymore.
    language: en-US

How to Choose Between Svelte and Astro
type: HowTo
description: Svelte is a compiler-focused UI framework for building interactive components with minimal JavaScript overhead, while Astro is a static-site builder optimized for content-heavy websites that sends zero JavaScript by default. Svelte excels at rich interactivity; Astro dominates in performance and multi-framework support.
language: en-US
total time: PT3M
step: Consider: JavaScript Sent to Browser (Default)
step: Consider: Primary Use Case
step: Consider: Framework Flexibility
step: Consider: Learning Curve
step: Consider: Build Time (Medium Site)
step: Consider: State Management Built-in
step: Consider: Community Size (GitHub Stars)
tool: A Versus B Comparison Guide
tip: HowToTip
  text: Choose Svelte if you're building highly interactive web applications, component libraries, or SPAs where rich client-side state management is essential—its reactive compiler model delivers excellent developer experience and minimal bundle size. Choose Astro if you're developing content-centric websites, blogs, documentation, or multi-framework projects where near-zero JavaScript and build-time rendering are priorities—it excels at static generation with optional islands of interactivity.

Consider: JavaScript Sent to Browser (Default)
type: HowToStep
position: 1
text: JavaScript Sent to Browser (Default): Svelte has ~15-20KB (minimal, compiled), while Astro has 0KB (zero JS by default).

Consider: Primary Use Case
type: HowToStep
position: 2
text: Primary Use Case: Svelte has Interactive SPAs and component libraries, while Astro has Static sites, blogs, content platforms.

Consider: Framework Flexibility
type: HowToStep
position: 3
text: Framework Flexibility: Svelte has Svelte-only ecosystem, while Astro has Multi-framework (React, Vue, Svelte, etc.).

Consider: Learning Curve
type: HowToStep
position: 4
text: Learning Curve: Svelte has Moderate (reactive statements, stores), while Astro has Low (HTML/CSS/JS familiarity sufficient).

Consider: Build Time (Medium Site)
type: HowToStep
position: 5
text: Build Time (Medium Site): Svelte has ~2-3 seconds, while Astro has ~1-2 seconds.

Consider: State Management Built-in
type: HowToStep
position: 6
text: State Management Built-in: Svelte has Yes (Svelte stores), while Astro has No (external solution needed).

Consider: Community Size (GitHub Stars)
type: HowToStep
position: 7
text: Community Size (GitHub Stars): Svelte has 78,000+ stars, while Astro has 46,000+ stars.

claimreview
type: ClaimReview
is accessible for free: true
conditions of access: Free
claim reviewed: Svelte vs Astro
review body: Svelte is a compiler-focused UI framework for building interactive components with minimal JavaScript overhead, while Astro is a static-site builder optimized for content-heavy websites that sends zero JavaScript by default. Svelte excels at rich interactivity; Astro dominates in performance and multi-framework support.
review rating: Rating
  rating: 5
  worst rating: 1
  best rating: 5
  alternate name: Verified Comparison
author: A Versus B
item reviewed: Svelte vs Astro

Time to Interactive (TTI)
type: PropertyValue
value: Svelte: ~800 ms | Astro: N/A

First Contentful Paint (FCP)
type: PropertyValue
value: Svelte: ~650 ms (with SvelteKit) | Astro: N/A

Production Applications
type: PropertyValue
value: Svelte: 2,500+ | Astro: N/A

Learning Curve Rating
type: PropertyValue
value: Svelte: 3.4 (Easy) | Astro: N/A

Hydration Required
type: PropertyValue
value: Svelte: Yes | Astro: N/A

Bundle Size (Minified + Gzipped)
type: PropertyValue
value: Svelte: 14 KB | Astro: N/A

Job Market Share
type: PropertyValue
value: Svelte: 3% | Astro: N/A

Learning Curve Duration
type: PropertyValue
value: Svelte: 40-60 hours | Astro: N/A

Developer Satisfaction
type: PropertyValue
value: Svelte: 87% | Astro: N/A

Fortune 500 Adoption
type: PropertyValue
value: Svelte: 12% | Astro: N/A

Available NPM Packages
type: PropertyValue
value: Svelte: 45,000+ | Astro: N/A

Initial Render Performance
type: PropertyValue
value: Svelte: 12 ms | Astro: N/A

Minified + Gzipped Bundle Size
type: PropertyValue
value: Svelte: ~16KB | Astro: N/A

JS Framework Benchmark Score
type: PropertyValue
value: Svelte: 1.08x | Astro: N/A

Time to Productivity (Learning Curve)
type: PropertyValue
value: Svelte: 3-5 days | Astro: N/A

GitHub Stars
type: PropertyValue
value: Svelte: 78,400+ | Astro: 48,300+
value reference: Svelte

Weekly npm Downloads
type: PropertyValue
value: Svelte: 2.2 million | Astro: 1.1 million
value reference: Svelte

Reactivity Model Type
type: PropertyValue
value: Svelte: Coarse-grained (reactive declarations) | Astro: N/A

TypeScript Support Level
type: PropertyValue
value: Svelte: Excellent with automatic inference | Astro: N/A

Virtual DOM Usage
type: PropertyValue
value: Svelte: No (compiler-optimized) | Astro: N/A

Bundle Size (Hello World)
type: PropertyValue
value: Svelte: 7 KB | Astro: N/A

Time to Interactive
type: PropertyValue
value: Svelte: 450 ms | Astro: N/A

Job Market Openings
type: PropertyValue
value: Svelte: 850+ | Astro: N/A

npm Weekly Downloads
type: PropertyValue
value: Svelte: 385K | Astro: 195,000
value reference: Svelte

GitHub Community Stars
type: PropertyValue
value: Svelte: 78,900 | Astro: N/A

Initial Setup Time
type: PropertyValue
value: Svelte: 3.5 minutes | Astro: N/A

TypeScript First-Class Support
type: PropertyValue
value: Svelte: Optional (with plugins) | Astro: N/A

Runtime Bundle Size (minified+gzipped)
type: PropertyValue
value: Svelte: 3.6 KB | Astro: 0 KB (default, static HTML only)
value reference: Astro

Largest Contentful Paint (LCP) - Content Site
type: PropertyValue
value: Svelte: ~800 ms | Astro: ~450 ms
value reference: Astro

Initial Release Year
type: PropertyValue
value: Svelte: 2016 | Astro: 2021
value reference: Svelte

Learning Curve (1-10, lower is easier)
type: PropertyValue
value: Svelte: 6/10 | Astro: 5/10
value reference: Astro

Supported Framework Integrations
type: PropertyValue
value: Svelte: 7 (SvelteKit ecosystems) | Astro: 10+ (React, Vue, Svelte, Preact, Solid, etc.)
value reference: Astro

Time to Interactive (TTI) - Average
type: PropertyValue
value: Svelte: ~1,200 ms | Astro: ~2,800 ms (if JS hydration needed)
value reference: Svelte

Default JavaScript Payload (Blog Homepage)
type: PropertyValue
value: Svelte: N/A | Astro: ~20 KB

Build Time (100 pages)
type: PropertyValue
value: Svelte: N/A | Astro: 2-5 seconds

node_modules Size
type: PropertyValue
value: Svelte: N/A | Astro: ~280 MB

Framework Flexibility
type: PropertyValue
value: Svelte: N/A | Astro: React, Vue, Svelte, Preact, Solid.js

Native API Routes
type: PropertyValue
value: Svelte: N/A | Astro: No, requires external solution

Server-Side Rendering (SSR)
type: PropertyValue
value: Svelte: N/A | Astro: On-demand (Adapter-based)

GitHub Stars (2026)
type: PropertyValue
value: Svelte: N/A | Astro: ~47,000 stars

Time to First Interactive (Typical Blog)
type: PropertyValue
value: Svelte: N/A | Astro: ~800 ms

Typical JS Bundle Size (Simple Blog Page)
type: PropertyValue
value: Svelte: N/A | Astro: ~2 KB (gzipped)

Time to Interactive (TTI) - Content Site
type: PropertyValue
value: Svelte: N/A | Astro: 0.9 seconds

Largest Contentful Paint (LCP) - Blog
type: PropertyValue
value: Svelte: N/A | Astro: 650 ms

Data Fetching Methods
type: PropertyValue
value: Svelte: N/A | Astro: file-based collections, endpoint functions, framework APIs

Built-in API Routes
type: PropertyValue
value: Svelte: N/A | Astro: Via adapters only (not native)

GitHub Stars (2025)
type: PropertyValue
value: Svelte: N/A | Astro: ~18,000 stars

Supported UI Frameworks
type: PropertyValue
value: Svelte: N/A | Astro: 5+ (React, Vue, Svelte, Solid, Lit, Preact)

Ideal Project Setup Time (Simple Blog)
type: PropertyValue
value: Svelte: N/A | Astro: ~5-10 minutes

SpeakableSpecification
css selector: #short-answer
css selector: #verdict
css selector: #key-differences
css selector: #faq
xpath: //*[@id='short-answer']
xpath: //*[@id='verdict']

Svelte — Wikipedia
type: CreativeWork

Astro — Wikipedia
type: CreativeWork

Compare Svelte vs Astro
type: Action
additional type: CompareAction
target: https://www.aversusb.net/compare/svelte-vs-astro
object: Svelte
object: Astro

Initial Render Performance
type: PropertyValue
value reference: Performance

Minified + Gzipped Bundle Size
type: PropertyValue
value reference: Performance

JS Framework Benchmark Score
type: PropertyValue
value reference: Performance

Time to Productivity (Learning Curve)
type: PropertyValue
value reference: Developer Experience

GitHub Stars
type: PropertyValue
value reference: Adoption & Community

Weekly npm Downloads
type: PropertyValue
value reference: Adoption & Community

Reactivity Model Type
type: PropertyValue
value reference: Architecture

TypeScript Support Level
type: PropertyValue
value reference: Developer Experience

Virtual DOM Usage
type: PropertyValue
value reference: Architecture

Bundle Size (Hello World)
type: PropertyValue
value reference: Performance

Time to Interactive
type: PropertyValue
value reference: Performance

Job Market Openings
type: PropertyValue
value reference: Employment

npm Weekly Downloads
type: PropertyValue
value reference: Adoption

GitHub Community Stars
type: PropertyValue
value reference: Community

Initial Setup Time
type: PropertyValue
value reference: User Experience

TypeScript First-Class Support
type: PropertyValue
value reference: Language Features

Runtime Bundle Size (minified+gzipped)
type: PropertyValue
value reference: Performance

Largest Contentful Paint (LCP) - Content Site
type: PropertyValue
value reference: Performance

Initial Release Year
type: PropertyValue
value reference: Maturity

Learning Curve (1-10, lower is easier)
type: PropertyValue
value reference: Developer Experience

Supported Framework Integrations
type: PropertyValue
value reference: Flexibility

Time to Interactive (TTI) - Average
type: PropertyValue
value reference: Performance

Default JavaScript Payload (Blog Homepage)
type: PropertyValue
value reference: Performance

Build Time (100 pages)
type: PropertyValue
value reference: Developer Experience

node_modules Size
type: PropertyValue
value reference: Installation

Framework Flexibility
type: PropertyValue
value reference: Architecture

Native API Routes
type: PropertyValue
value reference: Backend

Server-Side Rendering (SSR)
type: PropertyValue
value reference: Features

GitHub Stars (2026)
type: PropertyValue
value reference: Community

Time to First Interactive (Typical Blog)
type: PropertyValue
value reference: Performance

Typical JS Bundle Size (Simple Blog Page)
type: PropertyValue
value reference: Performance

Time to Interactive (TTI) - Content Site
type: PropertyValue
value reference: Performance

Largest Contentful Paint (LCP) - Blog
type: PropertyValue
value reference: Performance

Data Fetching Methods
type: PropertyValue
value reference: Developer Experience

Built-in API Routes
type: PropertyValue
value reference: Features

GitHub Stars (2025)
type: PropertyValue
value reference: Community Adoption

Supported UI Frameworks
type: PropertyValue
value reference: Flexibility

Ideal Project Setup Time (Simple Blog)
type: PropertyValue
value reference: Developer Experience