Web Development · head to head
Preact vs Alpine.js
Preact
Web Development
3kB alternative to React with the same modern API
- From
- Free
- Rated
- -
Alpine.js
Web Development
Lightweight JavaScript framework for composing dynamic behavior in HTML
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Preact compatibility through preact/compat is good but not total, and some React libraries break in ways that are hard to diagnose; Alpine.js not suitable for complex single-page applications with heavy state management
- They diverge on capability: Preact covers 3kB runtime, Alpine.js covers Declarative state.
Where they differ
Only the attributes on which Preact and Alpine.js actually diverge.
Identical on both: starting price (Free), free tier (Yes), platforms (Web), user rating (Not yet rated), category (Web Development).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Preact
- 3kB runtime
- preact/compat
- Same modern API
- Fast rendering
Only in Alpine.js
- Declarative state
- Two-way binding
- Event handling
- Conditional rendering
- Loops
- Transitions
- DOM utilities
What people use each for
The jobs each tool is most often brought in to do.
Preact
- Embedded widgets that load inside someone else’s page and must stay smallnot Alpine.js
- Marketing and content sites where JavaScript payload affects Core Web Vitalsnot Alpine.js
- Applications targeting low-bandwidth or low-powered devicesnot Alpine.js
Alpine.js
- Adding interactivity to server-rendered HTML templatesnot Preact
- Building progressive enhancement patterns with minimal JavaScriptnot Preact
- Creating interactive components without full-stack frameworksnot Preact
- Existing projects requiring lightweight JavaScript additionsnot Preact
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Preact
- Compatibility through preact/compat is good but not total, and some React libraries break in ways that are hard to diagnose
- Behavioural differences from React exist in edge cases, particularly around event handling
- A much smaller community, so unusual problems have fewer existing answers than React
Alpine.js
- Not suitable for complex single-page applications with heavy state management
- Limited ecosystem compared to larger frameworks like React or Vue
- Smaller community means fewer tutorials and third-party libraries
- Performance may suffer in highly interactive applications with frequent state updates
Pricing, plan by plan
Preact
Free- PreactFree
- Full library
- Commercial use permitted
- No usage limits
Alpine.js
FreeNo published plan breakdown. See the Alpine.js review.
Which should you pick?
Choose Preact if
- You need 3kb runtime.
- You want to start without paying.
- You also want preact/compat.
Choose Alpine.js if
- You need declarative state.
- You want to start without paying.
- You also want two-way binding.
Questions people ask
- Is Preact or Alpine.js better?
- Neither clearly leads. Preact starts at Free and Alpine.js at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Preact or Alpine.js?
- Preact starts at Free and Alpine.js at Free.
- Does Preact or Alpine.js run on more platforms?
- Both run on Web, so platform support will not decide this one for you.
- Can I use Preact for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Preact best used for?
- Preact is most often used for embedded widgets that load inside someone else’s page and must stay small, marketing and content sites where javascript payload affects core web vitals, applications targeting low-bandwidth or low-powered devices. Of those, embedded widgets that load inside someone else’s page and must stay small and marketing and content sites where javascript payload affects core web vitals are not what Alpine.js is typically brought in for.
- What can Preact do that Alpine.js cannot?
- Preact covers 3kB runtime, preact/compat, Same modern API, Fast rendering. Alpine.js covers Declarative state, Two-way binding, Event handling, Conditional rendering.
Answered from the vendors’ own pages
Preact: Is Preact free?
Yes, open source under the MIT licence.
Alpine.js: Is Alpine.js suitable for complex applications?
Alpine.js is designed for progressive enhancement and adding interactivity to server-rendered applications. Complex single-page applications are better served by full-featured frameworks.
SourcePreact: Can I use React libraries with Preact?
Most, through the preact/compat layer. Compatibility is good but not complete, so libraries relying on React internals can break.
Alpine.js: How does Alpine.js compare to jQuery?
Alpine.js is the modern successor to jQuery, emphasizing declarative attributes for interactivity rather than imperative DOM manipulation.
SourcePreact: Why choose Preact over React?
Bundle size, almost always. If payload is not a binding constraint, React’s ecosystem is usually the better trade.
Alpine.js: Can Alpine.js be used alongside other frameworks?
Yes, Alpine.js can be used to add interactivity to specific components within server-rendered applications without conflicts.
SourceRelated pages
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