Astro
A JavaScript framework for building high-performance, content-focused websites
- Also known as
- astro
What is Astro?
Astro is a web framework that prioritizes performance through server-side rendering and sends minimal JavaScript to browsers. It features an island architecture for selective interactivity, supports all major UI frameworks, and produces zero unnecessary JavaScript by default.
Astro pricing
We don't have Astro's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What Astro does
The capabilities that matter for frontend ui frameworks, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Paradigm
- Server-first JavaScript framework
- Reusable component model
- ✓
- Virtual DOM
- -
- Signals / fine-grained reactivity
- -
- SSR support
- ✓
- First-class TypeScript
- ✓
- Built-in state management
- -
- Official router
- -
- Runtime size
- Tiny (<10kb)
Platform & deployment
Independently observed- Web
- Cloud / SaaS
Integrations (21)
Independently observed- Solid←•
- React
- Vue
- Svelte
- Tailwind CSS
- Vercel
- Cloudflare Workers
- Node.js
- Prism
- MDX
- Sitemap
- Starlight
- Sentry
- UnoCSS
- Expressive Code
- astro-icon
- astro-seo
- Fathom Analytics
- Feedback Fish
- Cloudflare•
- Sonda
Security & compliance
Known vulnerabilities: 25 (20 in the last 12 months), max severity HIGH sourcea count reflects scale & disclosure, not quality
Astro FAQ
Common questions about Astro, answered from independent, dated evidence.
What is Astro?
A web framework that renders pages on the server and sends minimal JavaScript to browsers, designed for high-performance marketing sites, blogs, and e-commerce platforms. It is indexed under Frontend UI Frameworks.
Source: https://astro.build/
Is Astro free to use?
Astro is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.
Source: https://astro.build/
What platforms does Astro support?
Astro supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://astro.build/
Can Astro be self-hosted?
Yes. Astro can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://astro.build/
What does Astro integrate with?
We have confirmed 18 integrations for Astro, including React, Vue, Svelte, Tailwind CSS, Vercel, Cloudflare Workers, Node.js and Prism, plus 10 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://astro.build/
What security certifications does Astro have?
We have independently confirmed GDPR for Astro. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Astro not holding them. Always confirm compliance directly before you rely on it.
Source: https://astro.build/privacy/
Is Astro open source?
Yes. Astro is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
Astro alternatives
Other frontend ui frameworks we track, ranked by the same independent score.
- Vue.jsA progressive JavaScript framework for incremental web UI developmentmedium · 71%
- Vue.jsA JavaScript framework for building web user interfaces with progressive and gradual adoptionhigh · 77%
- PreactA lightweight JavaScript framework that delivers React-compatible features in just 3 kilobytesmedium · 72%
- MUIReady-to-use React components for building web applicationsmedium · 72%
- AngularA development platform for building web, mobile, and desktop applications with TypeScriptmedium · 58%
- SvelteA web development approach focused on simplicity and efficiencymedium · 71%
Compare Astro
Side by side against other frontend ui frameworks, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Astro, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package downloads | 89 | 0.17 | 15.4 | ✓ |
| Capabilities | 96 | 0.08 | 8.0 | ✓ |
| Development activity | 63 | 0.12 | 7.6 | ✓ |
| Dependent projects | 71 | 0.08 | 5.7 | ✓ |
| Stars | 91 | 0.03 | 3.0 | ✓ |
| Integrations | 37 | 0.05 | 1.9 | ✓ |
| Release cadence | 0 | 0.07 | 0.0 | - |
| Security posture | 5 | 0.09 | 0.0 | - |
| Security score | 0 | 0.05 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 100 | mediumsource · 2026-10-13 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 7 items | mediumsource · 2026-09-10 · 65% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Runtime: node · Paradigm: Server-first JavaScript framework · Build model: static_with_islands · Bundle size: tiny · Ssr support: Yes · Component model: Yes | mediumsource · 2026-10-13 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 18 | mediumsource · 2026-10-13 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | TypeScript | highsource · 2026-10-13 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-10-13 · 85% |
Pricing
Release
| Attribute | Value | Evidence |
|---|---|---|
| History | 20 items | mediumsource · 2026-10-13 · 70% |
Security
Is Astro the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Astro against the rest of the frontend ui frameworks we index, using the same dated evidence weighted your way.
Free to run, no account needed to start. How the evaluation works
Is this your product?
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