Web Development · head to head
HTMX vs Rollup

HTMX
Web Development
Lightweight JavaScript library enabling AJAX, WebSockets, and server-sent events in HTML
- From
- Free
- Rated
- -
The short version
- Each has a real cost: HTMX best suited for server-rendered architectures, not pure client-side SPAs; Rollup slower than the Go and Rust bundlers that followed it, since it is written in JavaScript
- They diverge on capability: HTMX covers AJAX requests, Rollup covers Tree shaking.
Where they differ
Only the attributes on which HTMX and Rollup actually diverge.
Identical on both: starting price (Free), free tier (Yes), 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 HTMX
- AJAX requests
- HTTP verb support
- DOM targeting
- Swap strategies
- WebSocket support
- Server-sent events
- Out-of-band updates
Only in Rollup
- Tree shaking
- Clean output
- Multiple output formats
- Plugin API
What people use each for
The jobs each tool is most often brought in to do.
HTMX
- Building interactive applications without JavaScript framework complexitynot Rollup
- Server-rendered applications requiring dynamic updatesnot Rollup
- Adding interactivity to existing server-side applicationsnot Rollup
- Hypermedia-driven applications using HTML-first approachesnot Rollup
Rollup
- Publishing a JavaScript library in several module formatsnot HTMX
- Builds where output size and cleanliness matter more than build speednot HTMX
- Producing ES module output for consumers who will bundle it themselvesnot HTMX
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
HTMX
- Best suited for server-rendered architectures, not pure client-side SPAs
- Limited client-side state management capabilities compared to frameworks
- Smaller ecosystem with fewer third-party libraries and tools
- Learning curve for developers from JavaScript framework backgrounds
Rollup
- Slower than the Go and Rust bundlers that followed it, since it is written in JavaScript
- Application concerns like dev servers and hot reloading are not its job, so app builds need Vite on top
- Configuration for non-trivial applications gets verbose compared with tools that assume more
Pricing, plan by plan
HTMX
FreeNo published plan breakdown. See the HTMX review.
Rollup
Free- RollupFree
- Full functionality
- Commercial use permitted
- Community support
Which should you pick?
Choose HTMX if
- You need ajax requests.
- You want to start without paying.
- You also want http verb support.
Choose Rollup if
- You need tree shaking.
- You want to start without paying.
- You work on Linux, macOS, Windows.
- You also want clean output.
Questions people ask
- Is HTMX or Rollup better?
- Neither clearly leads. HTMX starts at Free and Rollup at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, HTMX or Rollup?
- HTMX starts at Free and Rollup at Free.
- Does HTMX or Rollup run on more platforms?
- HTMX runs on Web. Rollup runs on Linux, macOS, Windows.
- Can I use HTMX for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is HTMX best used for?
- HTMX is most often used for building interactive applications without javascript framework complexity, server-rendered applications requiring dynamic updates, adding interactivity to existing server-side applications, hypermedia-driven applications using html-first approaches. Of those, building interactive applications without javascript framework complexity and server-rendered applications requiring dynamic updates are not what Rollup is typically brought in for.
- What can HTMX do that Rollup cannot?
- HTMX covers AJAX requests, HTTP verb support, DOM targeting, Swap strategies. Rollup covers Tree shaking, Clean output, Multiple output formats, Plugin API.
Answered from the vendors’ own pages
HTMX: How big is the HTMX JavaScript library?
HTMX is only 16 kilobytes minified and gzipped with zero external dependencies.
SourceRollup: Is Rollup free?
Yes, open source under the MIT licence.
HTMX: Can HTMX work with JSON APIs?
While HTMX is optimized for HTML responses, it can work with JSON through additional configuration and response handling.
SourceRollup: Rollup or webpack?
Rollup is the usual choice for libraries thanks to cleaner output and better tree shaking. webpack remains stronger for complex applications with heavy asset handling.
HTMX: Does HTMX support real-time features like WebSockets?
Yes, HTMX includes support for WebSockets and server-sent events for real-time bidirectional communication.
SourceRollup: Do I need Rollup if I use Vite?
Not directly. Vite uses Rollup for production builds, so you already benefit from it.
Related pages
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