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Astro
Web framework for content-driven sites shipping minimal JavaScript by default
As of 25 August 2026, Astro is free to use. Astro is a free, open-source web framework that renders components on the server and ships only HTML and CSS by default, with optional JavaScript for interactive components. Softwr lists it under Web Development. Astro is available on Web, API.
Overview
What Astro does
Astro is a modern static site and server-driven framework optimised for content-heavy websites (blogs, marketing sites, documentation, portfolios) where JavaScript is minimised. The core philosophy: render components on the server, send lightweight HTML to browsers, and add JavaScript only where interactivity is needed (via "Islands" architecture). This approach eliminates the JavaScript bloat of single-page applications (SPAs), resulting in faster page loads, better Core Web Vitals scores, and superior SEO. The framework supports mixed component systems: developers use Astro components (server-rendered), React, Vue, Svelte, Preact, and Solid components (client-rendered only where necessary). Built-in features include file-based routing, middleware, optimised image handling, view transitions, and content collections for type-safe blog posts and documentation. Deployment adapters support Node.js, Cloudflare Workers, Vercel, Netlify, AWS Lambda, Deno, and traditional web hosts. The Islands architecture automatically optimises which components run client-side; static content renders as HTML, interactive widgets load JavaScript on demand. Performance data shows Astro sites achieve 66% Core Web Vitals pass rate compared to WordPress (48%), Gatsby (47%), Next.js (30%), and Nuxt (28%). This performance advantage makes Astro ideal for marketing sites, documentation, and e-commerce where page speed impacts conversions and SEO ranking. Content flexibility allows sourcing from filesystems (Markdown, MDX), APIs, CMS platforms (Contentful, Sanity), or hybrid combinations. Astro competes with Next.js (requires JavaScript-heavy SPA patterns), Gatsby (static generation limited by build time), Hugo (static but limited templating), and traditional WordPress. The free, open-source framework under MIT licence requires no licensing.
What people use it for
- Marketing websites and landing pages prioritising performance and SEO
- Documentation and blog platforms with high page volumes
- E-commerce storefronts where page speed affects conversion rates
- Portfolio and personal websites showcasing static content with minimal interactivity
- Multi-language sites requiring efficient content management and translation
- JAMstack projects integrating headless CMS platforms (Contentful, Sanity, Strapi)
The honest half
Where it falls short
Concrete and checkable, so you can decide whether any of them matter to you. This is the half of a review a vendor will not write about Astro.
- Limited to static site generation and server-side rendering; real-time applications requiring constant client-server communication are unsuitable
- Smaller ecosystem compared to Next.js; fewer third-party component libraries and integrations readily available
- Build time increases with large content volumes (1,000+ pages); incremental builds not yet as optimised as Gatsby or Next.js
- API routes and serverless functions are less mature than Next.js; complex backend integrations require additional tooling
Cross-shopped
What people choose instead of Astro
Each pairing was judged by two reviewers asking whether a buyer would genuinely weigh the two against each other. The ones that failed were deleted rather than published.
- AstrovsDjango
Django: The web framework for perfectionists with deadlines
- AstrovsNext.js
Next.js: The React framework for the web
- AstrovsFlask
Flask: A lightweight WSGI web application framework
Answered, with sources
Questions people ask
Each answer names the page it came from, so you can check it rather than take our word for it.
Is Astro free?
Yes. Astro is free and open-source under MIT licence. Deployment hosting (Vercel, Netlify, Cloudflare, AWS) may incur costs depending on usage.
SourceCan I use React components in Astro?
Yes. Astro supports React, Vue, Svelte, Preact, and Solid components. Components are server-rendered by default; add client: directives to enable client-side interactivity only where needed.
SourceHow does Astro compare to Next.js for performance?
Astro achieves superior Core Web Vitals scores (66% pass rate vs Next.js 30%) by shipping minimal JavaScript. Next.js defaults to client-side rendering; Astro renders on the server by default.
SourceKeep looking
Where to go from Astro
- Astro alternativesEvery product people weigh against it
- Astro pricingPlans, floors and what the tiers exclude
- Astro badgesWhich rules it meets, and the figure behind each
- All Web Development softwareThe full category
- Best Web Development softwareThe shortlist, and how it was cut
Best Web Development software for
Compare Astro with
- Flask
- Qwik
- Next.js
- Django
- MySQL
- Alpine.js
- Strikingly
- Remix
- TanStack Start
- Carrd
- HTMX
- Drupal
- FastAPI
- Lit
- NestJS
- Nuxt
- PHP
- Preact
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Softwr does not host reviews and shows no star rating for Astro, because a rating we did not collect is not ours to publish. What is here is the pricing and platform detail from the vendor’s own pages, limitations we could state concretely, and alternatives a reviewer confirmed people weigh against it. Tell us if any of it is wrong.
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Drag-and-drop website builder with hosting, e-commerce and marketing bundled into one subscription
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