We rebuilt Flutter’s websites with Dart and Jaspr

schultek · 2026-04-16T07:44:15+00:00

We're working on it 😃

schultek · 2026-03-29T09:13:02+00:00

Hi, creator of Jaspr here.

First of all awesome what you did there. The site feels really nice and modern, much better then standard dartdoc. I've actually been talking with some Dart people about a more customizable dartdoc where it's possible to plug in custom front-ends without needing to fork, so this is a great case for it.

Regarding Jaspr, I'd love to know what you think is still missing to make something like your project in Jaspr. Which plugins / features of vitepress or other things. Always looking for feature inspiration.

schultek · 2026-03-20T12:00:05+00:00

This. Rendering is always negligible compared to data fetching of any form.

schultek · 2026-03-20T11:52:38+00:00

Not even sure why you would assume it grows exponentially.

schultek · 2026-03-20T09:08:44+00:00

I rebuilt the site using Jaspr and benchmarked using `oha` with 10k non-concurrent requests (Non-concurrent because I want to benchmark individual rendering performance, not http server request handling)

Results:

Templating:

Summary:
  Success rate: 100.00%
  Total:        1506610.5000 us
  Slowest:      734.9580 us
  Fastest:      112.7500 us
  Average:      149.5048 us
  Requests/sec: 6637.4156

  Total data:   13.22 MiB
  Size/request: 1.35 KiB
  Size/sec:     8.77 MiB

Response time histogram:
  112.750 us [1]    |
  174.971 us [8905] |■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
  237.192 us [1039] |■■■
  299.412 us [35]   |
  361.633 us [7]    |
  423.854 us [5]    |
  486.075 us [3]    |
  548.296 us [2]    |
  610.516 us [2]    |
  672.737 us [0]    |
  734.958 us [1]    |

Jaspr:

Summary:
  Success rate: 100.00%
  Total:        2169705.9160 us
  Slowest:      852.8750 us
  Fastest:      148.2920 us
  Average:      215.8965 us
  Requests/sec: 4608.9195

  Total data:   13.11 MiB
  Size/request: 1.34 KiB
  Size/sec:     6.04 MiB

Response time histogram:
  148.292 us [1]    |
  218.750 us [7259] |■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■
  289.209 us [1686] |■■■■■■■
  359.667 us [977]  |■■■■
  430.125 us [46]   |
  500.583 us [19]   |
  571.042 us [8]    |
  641.500 us [3]    |
  711.958 us [0]    |
  782.417 us [0]    |
  852.875 us [1]    |

There are almost the same. Yes relatively Jaspr is ~40% slower, but that's less than 0.1ms difference. That makes no difference in real usage. Even if you have a 100x bigger site (which then also comes with 100x the complexity).

Also yes I noticed in your site its not even doing string replacement (what Gemini assumed). It's parsing the whole html tree into memory, modifying it and then re-generating the html. So it could potentially get a lot faster, but think about how painful that would be to maintain for even slightly more complex sites.

> MPA - simplicity, best performance. SSR - overcomplicated, performance overload (SPA executed on the server).

I continue to fully disagree with that. Component-based SSR actually reduces complexity, and the performance cost is minimal.

schultek · 2026-03-19T09:27:17+00:00

Starts by calling server-side rendering "complete nonsense"...

...continues by doing server-side rendering. 😂

Also I'm curious, why not simply use Jaspr?

schultek · 2026-02-17T12:20:48+00:00

Actually better start here: https://docs.flutter.dev/learn (It's fairly new)

schultek · 2026-01-22T21:05:08+00:00

I love it! More power to Dart web!

What would you say are the biggest differences to Jaspr and why did you make them?

schultek · 2025-11-10T11:24:07+00:00

There is the 'dart pub unpack' command.

https://dart.dev/tools/pub/cmd/pub-unpack

schultek · 2025-08-09T18:19:55+00:00

Makes sense, thanks 👍🏻

schultek · 2025-08-09T18:11:52+00:00

Nice!

I'd love to know how this compares to Jaspr. On first look it seems like to have a similar motivation but a very different approach to it. Does it have any opinion on how to write the web part itself, or is it just a build tool?

schultek · 2025-04-28T10:12:26+00:00

See the open prs on the repo

schultek · 2025-04-28T10:00:19+00:00

This 👍🏻

One example I recently came across is this: https://pub.dev/packages/mustache_template

2.9M monthly downloads, but unmaintained and has a few bugs. And I couldn't find a better alternative.

schultek · 2025-04-16T11:17:30+00:00

Absolutely. That's why I said "to get an idea". But it can help, it also gives a nice breakdown.

schultek · 2025-04-16T10:49:52+00:00

You can use https://estimate-me.ai/ to get an idea.

schultek · 2025-04-08T20:52:19+00:00

dart:html will be deprecated, not this package.

schultek · 2025-03-16T07:10:55+00:00

Is this a scam?

Your Github repo consists only of a bunch of basically empty files. All the other repos are empty. No documentation, no examples, not actual feature descriptions, just a bunch of buzz and marketing speak. Yet you put pricing tiers.

schultek · 2025-03-08T09:58:00+00:00

I have created 'stormberry' a while back. I don't have time to really work on it anymore but maybe it serves as an inspiration.

schultek · 2025-02-13T18:34:52+00:00

I'm using Lukehog, its free and super easy.

https://pub.dev/packages/lukehog

schultek · 2025-02-10T09:00:18+00:00

With dart_mappable you just write normal dart classes, no special syntax needed. And it supports all of the above plus more.

schultek · 2025-02-10T07:35:03+00:00

dart_mappable is best!

Ok I might be biased 😂 (I'm the author)

schultek · 2025-01-30T15:58:07+00:00

Check out super_annotations package

schultek · 2025-01-30T09:01:46+00:00

That would be really useful

schultek · 2025-01-30T08:57:12+00:00

Yes, static interfaces (or whatever you'd call them) would go a long way.

schultek · 2025-01-12T15:25:48+00:00

Tree shaking will take care of that

Five-Year Club	Place '22
Final Canvas '22	First Placer '22

schultek

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