Show HN: Basecoat – shadcn/UI components, no React required

146•hunvreus•5mo ago

Basecoat ports the upcoming shadcn/ui v4 [1] to plain HTML + Tailwind (no React):

- Live demo & documentation: https://basecoatui.com

- MIT‑licensed and free: https://github.com/hunvreus/basecoat/

- Works with any backend (Flask, Django, Rails, PHP, etc.) or static site.

- Fully theme‑compatible with shadcn/ui [2].

- Uses a sliver of Alpine.js only for a few interactive bits (e.g. combobox). Swap in your own JS if you prefer.

- Dead simple to use, just drop in a class here and there:

  <button class="btn" data-tooltip="This is a tooltip text">Click me</button>

Why I built it: after moving from a Next.js stack back to Flask + Tailwind + HTMX, I missed shadcn/ui and didn’t want walls of Tailwind classes (like Flowbite or Preline).

Feedback is most welcome: bugs, requests for components, criticism.

[1]: https://v4.shadcn.com/

[2]: https://basecoatui.com/installation/#install-theming

[3]: https://pagescms.org

Comments

BenderV•5mo ago

Awesome. Using Vue/Tailwind, I'm definitely interested in this. Maybe you could try to add examples of integrations with others frameworks? I'll play with it and give you my 2 cents.

hunvreus•5mo ago

Hello there Ben. Sure thing, I'll try and expand the docs.

codybontecou•5mo ago

Not sure if you're aware, but there's a well-supported Vue ShadCN library: https://www.shadcn-vue.com/

hunvreus•5mo ago

Yeah, it's excellent.

replwoacause•5mo ago

Looks nice! Can you add a CDN option? Would be nice for a quick start to play around.

Also, reminds me of https://franken-ui.dev

hunvreus•5mo ago

Yep, I've been considering adding a CDN option.

I think it may be on the heavier side though (~100k).

pacmanche•5mo ago

Now you just need to remove Tailwind

revskill•5mo ago

And then ?

campak•5mo ago

and then... that solves the issue of a Tailwind dep

7bit•5mo ago

If deps are a problem for you, don't use basecoat.

hunvreus•5mo ago

I think it's a fair ask.

Being able to just add one line to import the CSS styles and being able to get up and running quickly (like Alpine.js or HTMX do).

Not great if you're trying to build a serious production app, but great if you're just building a simple proof-of-concept or simple tool.

7bit•5mo ago

It is a fair ask. But not if you ask a Framework that is based on Tailwind. It's like critisising Windows for not being macOS.

hunvreus•5mo ago

If I offer a CDN version, it will be Tailwind-free.

yawnxyz•5mo ago

Yes please! Even if we have to add the tailwind as a CDN, this would be useful — as we don't have to use npm / yarn to build the project anymore.

(I like building pure html files in alpine)

o_m•5mo ago

Why did you decide going old school using Alpine.js instead of using plain vanilla web components?

edoceo•5mo ago

Alpine is old school now?

o_m•5mo ago

I'd say anything new in 2025 that involves working with the DOM that doesn't use web component is a waste. Lately I have been porting some old JS libraries (7+ years old) that still are visually impressive to web components, and in my experience after porting some libraries there is about 30% fewer lines of code. Before web components there was so much work to get things up and running in the DOM. Alpine.js does this behind the scenes, but there isn't really a need for it anymore.

edoceo•5mo ago

I've been using RiotJS when I need partial component support - wasn't an all-in thing like React ; and I thought HTMX and Alpine are also good for these partial upgrades. Maybe WebComponents are fully supported now? (I can't keep up)

1oooqooq•5mo ago

https://caniuse.com/?search=web%20components

hunvreus•5mo ago

I did seriously consider it, but again that was about trying to solve the problem in the least opinionated way.

Which is also why I made the Alpine code as unobtrusive as possible.

You can get away with using purely the CSS if you don't need dialogs or combobox. And you can plug your own JS if you decide to do so.

However, I will definitely try and see if I can make a web components version as soon as I have some time.

campak•5mo ago

I dig it. Love this

hunvreus•5mo ago

Great, let me know if you end up using it.

gsanderson•5mo ago

Looks great!

One suggestion would be adding a focus trap, such as when a Dialog opens. It's nice to use the tab key to move around the Dialog (inputs and buttons). Currently focus leaves to the page behind. It might be as simple as adding https://alpinejs.dev/plugins/focus#x-trap

hunvreus•5mo ago

Yeah, I looked into it but wanted to avoid adding plugins.

I already do a bit of (simple) focusing here and there, so it shouldn't leave the focus on the background:

https://github.com/hunvreus/basecoat/blob/main/src/js/dialog...

But more complex scenario require you to be specific about the field you want to see focused. I was thinking about allowing you designate the field to focus on.

What would you suggest?

dbbk•5mo ago

Why aren't you just using the built-in dialog element that already handles this?

hunvreus•5mo ago

<dialog> is kind of a PITA to style (backdrop, transitions, etc), and doesn't really solve any of the tough problems with dialogs (e.g. locking scrolling).

I tried really hard to use <dialog> and popover but didn't succeed. Maybe somebody more skilled can make it happen.

diiiimaaaa•5mo ago

So if I understand correctly all JS is custom-written Alpine JS components.

And all CSS is custom classes that use Tailwind @apply, I'm not sure why, can someone elaborate.

hunvreus•5mo ago

- I prefer using Alpine rather than Vanilla JS these days. But the JS code is only for dialogs, combobox and tabs. I don't even use it myself on most simple projects. Curious what you would recommend using instead? Web components?

- I use `@apply` in all of my custom Tailwind classes. It's easy to keep it consistent with the rest of your styles, and in this case it meant it was pretty easy for me to copy a good chunk of shadcn/ui's own components. You usually just use regular CSS for custom Tailwind utility classes?

strzibny•5mo ago

I also use @apply with Tailwind, makes this a beautiful not spagetti experience.

boxed•5mo ago

Can someone eli5 how this is different from something like bootstrap?

wafadaar•5mo ago

Bootstrap is a completely different framework with a different design language (one that many may precieve as out of fashion). This library/framework allows folks to use ShadCN (a component library) similar to Bootstrap which is only available through React/Vue/Svelte, etc.. with vanilla HTML.

boxed•5mo ago

So it's different in visual design, but the goal here is actually to make shadcn more like bootstrap? Hmm.. I think I like that.

hunvreus•5mo ago

Kinda, yeah. The goal is to make it possible for any web dev to use shadcn/ui with a regular HTML + CSS setup. No React. No Vue. Just whatever you're already using (e.g. Rails, Laravel, Django, ...).

christoff12•5mo ago

crayons vs colored pencils

jmisavage•5mo ago

FYI I don't think all of your styles are loading on the page. Tried safari and firefox and it doesn't look right.

hunvreus•5mo ago

Would you mind sending me a couple of screenshots at hunvreus@gmail.com, or adding it to an issue at https://github.com/hunvreus/basecoat/issues?

It would be incredibly helpful for me to debug.

WilcoKruijer•5mo ago

Very cool! Are you manually porting all components or are you using some sort of automated process?

hunvreus•5mo ago

All manual. It was a bit of work at first, but mostly because I had to decide how to structure them. It's actually quite straightforward to extend and maintain now.

zeroq•5mo ago

>> Works with any backend

Have you fully tested it with Solaris or AIX? /s

hunvreus•5mo ago

You had me reminisce of my uni days, logging into the Solaris stations pretty much every day. That purple wallpaper is etched into my eyes.

exiguus•5mo ago

> Why I built it: after moving from a Next.js stack back to Flask + Tailwind + HTMX, I missed shadcn/ui and didn’t want walls of Tailwind classes (like Flowbite or Preline).

I understand that Next.js can feel bloated, especially when used as a static site generator or within a classic JAMStack setup.

Basecoatui reminds me a bit of Bootstrap during the golden era of Ruby on Rails.

I took a look at the Git repository and tried to find an automated solution to convert shadcn to plain HTML but didn't find anything suitable. Is there a script available for this, or was this done manually?

hunvreus•5mo ago

It was all done manually.

tegdude•5mo ago

Thank you! I was searching for this exact thing the other week.

hunvreus•5mo ago

That's great to hear. Do let me know if you see any bug or missing component (I'm planning on adding the command component for example).

jacktheturtle•5mo ago

this is awesome, thanks for creating it

hunvreus•5mo ago

My pleasure.

Jonovono•5mo ago

This is awesome. I did the same and have been using AlpineJS Pines UI library. Been pretty happy with it! But will take a look at this

hunvreus•5mo ago

Pines is really neat. I just don't like the wall of classes, but super neat nonetheless.

czhu12•5mo ago

Really great! A major downside of moving from SPA's back to vanilla JS is how much you lose in terms of UI components.

I've normally done DaisyUI + Tailwind + Rails but it never feels quite right. Basecoat is a really nice step forward.

I have to imagine the author is planning to charge for a premium package at some point, but given that a huge % of development is spent on UI design, I'd be more than happy to pay for a year of updates.

hunvreus•5mo ago

Glad you like it. Do let me know what you end up building with it.

> I've normally done DaisyUI + Tailwind + Rails but it never feels quite right.

Same here: I could never quite get into Flowbite, Daisy UI, Preline or any of the other many alternatives.

> I have to imagine the author is planning to charge for a premium package at some point,

I did wonder if people would want to buy premium layouts or components. No plan to charge for anything for now though.

rglullis•5mo ago

Would you be interested in getting rid of Tailwind and have the styling strictly with SASS mixins?

hunvreus•5mo ago

Yes, I wanted to export it as a raw CSS build and host it on a CDN.

Feel free to watch the project if you want to be notified when I get that out.

urbanisierung•5mo ago

This is great! Thanks for implementing this!

hunvreus•5mo ago

My pleasure.

klaussilveira•5mo ago

This is great! The HTMX community needs more friendly UI kits like this.

hunvreus•5mo ago

Are you the HTMX CEO?

anon1094•5mo ago

Glad you shared this. Looks nice!

hunvreus•5mo ago

Thanks! Let me know if you build anything cool with it.

drcongo•5mo ago

This looks great. I've never used React so had never heard of shadcn, and annoyingly I've just got to the point in a side project where pulling out DaisyUI and replacing it with this might be a bit of a chore.

hunvreus•5mo ago

Do let me know if you end up using this. I'd love to get real life feedback on using it.

diordiderot•5mo ago

Absolutely love this. Wanted to do this myself but never enough to get started. You're a legend.

hunvreus•5mo ago

Thanks a lot, I got this done over the course of a few weeks and had no idea whether people would find this helpful. Looking forward to seeing others using it in the wild.

juddlyon•5mo ago

There’s a huge need for this, thank you! I build server-rendered marketing sites and there’s a huge gulf between the jQuery and React era.

hunvreus•5mo ago

Have you played with Alpine.js before? HTMX?

I think you can get quite far these days WITHOUT React or Vue.js (and I say that as the maintainer of a Next.js/React open source project [1]).

[1]: https://pagescms.org

juddlyon•5mo ago

Yep, I’ve used Alpine extensively and HTMX here and there. Lots of Vue.

There are not sets of polished, battle-tested UI libraries made for server side. Bootstrap ships with JS, but most of the CSS and template frameworks assume you’re using a headless setup.

I thought Web Components might spur things, but not really. React has continued to dominate.

hunvreus•5mo ago

What do you use on the server? Basecoat has Nunjucks and Jinja macros, but I’d like to add more (e.g. blade, liquid, etc). I also plan on building more layout demos (e.g. marketing pages).

4m1rk•5mo ago

Nice job! I've tried dozens of frameworks with various languages, but always return to Django+Tailwind+HTMX+Alpine.

hunvreus•5mo ago

High five! Close enough to my stack.

akka47•5mo ago

This looks awesome. Thanks a lot!

hunvreus•5mo ago

You're welcome.

hamish-b•5mo ago

This is exactly what I was wanting to reach for, wanted my chrome extension UI to match my react website. Appreciate your work!

hunvreus•5mo ago

Do send me a link to your extension if you end up using Basecoat: hunvreus@gmail.com

hamish-b•5mo ago

Will do! Will drop you a line when I do.

pxheller•5mo ago

This is great! I really like the style of shadcn/ui.

Recently I’ve been using ChatGPT to convert shadcn components to JinjaX. Will definitely give yours a try!

hunvreus•5mo ago

Didn't know JinjaX, interesting.

FYI, I have Jinja macros available: https://basecoatui.com/installation/#install-macros

r0fl•5mo ago

I’m moving from react to wordpress and I could not be happier that I discovered this today

I’m so pumped to try this out!!!

hunvreus•5mo ago

Very happy to hear that some people find it useful.

Please do let me know if things aren't working as expected, I want to make this a great alternative to anything else out there: https://github.com/hunvreus/basecoat/issues

Be brutally honest.

Show HN: OpenSnowcat – A fork of Snowplow to keep open analytics alive

Show HN: Git for LLMs – a context management interface

Show HN: I built a tech news aggregator that works the way my brain does

Show HN: I built Kumi – a typed, array-oriented dataflow compiler in Ruby

Show HN: Deta Surf – An open source and local-first AI notebook

Show HN: FlowLens – MCP server for debugging with Claude Code

Show HN: Hacker News sans AI content

Show HN: Nostr Web – decentralized website hosting on Nostr

Show HN: ScreenAsk – Free Screen Recording Links for Customer Support

Show HN: Desponsorize – Gray out Amazon sponsored search results

Show HN: BesiegeField – LLM Agents Learn to Build Machines in a Physics Sandbox

Show HN: Tommy – Turn ESP32 devices into through-wall motion sensors

Show HN: Story Keeper – AI agents with narrative continuity instead of memory

Show HN: Coyote – Wildly Real-Time AI

Show HN: Emojiwhat – Unicode and TikTok emojis to copy and paste

Show HN: Cuq – Formal Verification of Rust GPU Kernels

Show HN: Silly Morse code chat app using WebSockets

Show HN: Pg_textsearch – BM25 Ranking for Postgres

Show HN: Distil-NPC: a family of models for non-playable characters in games

Show HN: Play abstract strategy board games online with friends or against bots

Show HN: Cadence – A guitar theory app

Show HN: hist: An overengineered solution to `sort|uniq -c` with 25x throughput

Show HN: 401K Traditional vs. Roth Calculator

Show HN: How Software Fails-A book about complex system failures(sample chapter)

Show HN: A browser for Mac that connects to private web apps over SSH

Show HN: I built an SVG-generation tool

Show HN: Modshim – A new alternative to monkey-patching in Python

Show HN: Katakate – Dozens of VMs per node for safe code exec

Show HN: Android TV screensaver that plays live YouTube streams

Show HN: Create interactive diagrams with pop-up content

Show HN: OpenSnowcat – A fork of Snowplow to keep open analytics alive

Show HN: Git for LLMs – a context management interface

Show HN: I built a tech news aggregator that works the way my brain does

Show HN: I built Kumi – a typed, array-oriented dataflow compiler in Ruby

Show HN: Deta Surf – An open source and local-first AI notebook

Show HN: FlowLens – MCP server for debugging with Claude Code

Show HN: Hacker News sans AI content

Show HN: Nostr Web – decentralized website hosting on Nostr

Show HN: ScreenAsk – Free Screen Recording Links for Customer Support

Show HN: Desponsorize – Gray out Amazon sponsored search results

Show HN: BesiegeField – LLM Agents Learn to Build Machines in a Physics Sandbox

Show HN: Tommy – Turn ESP32 devices into through-wall motion sensors

Show HN: Story Keeper – AI agents with narrative continuity instead of memory

Show HN: Coyote – Wildly Real-Time AI

Show HN: Emojiwhat – Unicode and TikTok emojis to copy and paste

Show HN: Cuq – Formal Verification of Rust GPU Kernels

Show HN: Silly Morse code chat app using WebSockets

Show HN: Pg_textsearch – BM25 Ranking for Postgres

Show HN: Distil-NPC: a family of models for non-playable characters in games

Show HN: Play abstract strategy board games online with friends or against bots

Show HN: Cadence – A guitar theory app

Show HN: hist: An overengineered solution to `sort|uniq -c` with 25x throughput

Show HN: 401K Traditional vs. Roth Calculator

Show HN: How Software Fails-A book about complex system failures(sample chapter)

Show HN: A browser for Mac that connects to private web apps over SSH

Show HN: I built an SVG-generation tool

Show HN: Modshim – A new alternative to monkey-patching in Python

Show HN: Katakate – Dozens of VMs per node for safe code exec

Show HN: Android TV screensaver that plays live YouTube streams

Show HN: Create interactive diagrams with pop-up content

Show HN: Basecoat – shadcn/UI components, no React required

Comments