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11ty vs Astro

11ty lands on Depends, and Astro lands on Worth it.

11ty

11ty.dev

Depends
Confidence: Medium

Buy if you are a developer (or have one) building a fast content site and want zero licence cost.

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Astro

astro.build

Worth it
Confidence: Medium

Use it if you have developers and a content-heavy site . it's free, open source, and developers call it fantastic.

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11ty versus Astro
Compare11tyAstro
VerdictDependsWorth it
Best forDeveloper-built marketing sitesContent-heavy marketing sites
Who it's not forNon-technical teams wanting a drag-and-drop builderNon-technical teams wanting a website builder
PrivacyCore project maintains a security policy and hardened npm publishing; no core breaches found, but one malicious third-party plugin and dependency audit warnings exist.12Active CVE stream in 2025-2026 . SSRF via host-header handling and XSS in image endpoints; patches shipped via GitHub advisories.
Support qualityCommunity-only help; no vendor SLA evidence.No support evidence found
Public sentimentDeveloper sentiment is strongly positive on speed and simplicity, with recurring caveats that it demands coding skills and its project direction has sparked debate.⁷Developer sentiment is strongly positive . called fantastic and able to do it all . with ongoing debate about when it's the wrong fit.
Biggest gotchaNo paid support or SLA exists; help is docs, forums, and community goodwill.⁵Free software, but the real cost is developer time . agencies charge real money for builds

Pick 11ty when

  • Developer-built marketing sites
  • Blogs and documentation
  • Headless CMS front ends
  • Performance-critical static sites

When 11ty is not a fit

  • Non-technical teams wanting a drag-and-drop builder
  • Buyers who need vendor support or an SLA . none exists
  • Apps with user accounts and server-side data
  • Teams unwilling to maintain Node tooling

Pick Astro when

  • Content-heavy marketing sites
  • Blogs and docs sites
  • Dev teams leaving WordPress or Gatsby
  • Mixed static + dynamic pages

When Astro is not a fit

  • Non-technical teams wanting a website builder
  • No-code founders . use Squarespace or Framer instead
  • App-heavy products where Next.js fits better
  • Teams needing vendor SLAs and support contracts

Sources

  1. Eleventy is a simpler static site generator11ty.dev
    official
  2. Template Languages - Eleventy11ty.dev
    official
  3. Help 11ty become sustainable in 202411ty.dev
    official
  4. Securely Publishing our Packages to npm - Eleventy11ty.dev
    official
  5. Eleventy on Open Collectiveopencollective.com
    official
  6. Full Time Open Source Development for Eleventy, sponsored11ty.dev
    official
  7. I used 11ty and... It's awesome - James Hilljameshill.dev
    review
  8. 11ty: The Good, the Bad, and the... Possum?aleksandrhovhannisyan.com
    review
  9. Should I move from react to Eleventy? : r/webdevreddit.com
    review
  10. The End of Eleventy : r/webdevreddit.com
    review
  11. Revamped my entire wordpress portfolio as an 11ty site!reddit.com
    review
  12. Malicious Package in 11ty-simple-page-post-creatorsecurity.snyk.io
    security
  13. NPM Audit: Prototype pollution in async · Issue #2327github.com
    security
  14. Static Sites Do Scale: Eleventy vs. Next.js at 11ty Eventthenewstack.io
    news
  15. Astro . official siteastro.build
    official
  16. Why Microsoft Chose Astro (case study)astro.build
    official