alt.hn

4/6/2026 at 6:53:15 PM

Zooming UIs in 2026: Prezi, impress.js, and why I built something different

by tinchox6

4/7/2026 at 12:17:45 AM

As someone who suffers from vestibular migraines, unfortunately visiting the demo site instantly made get dizzy. I highly encourage you to implement the "@media (prefers-reduced-motion: reduce)" media query to handle accessibility [1]. I'd hopefully expect the zooms to turn into normal links or failing that, either slow down or have some kind of non-vestibular-attack-inducing flow.

Here are some other good resources: https://www.a11yproject.com/posts/understanding-vestibular-d... or https://web.dev/articles/prefers-reduced-motion

I don't say this as criticism as I'm sure you've never heard of these issues before, but something I'd encourage you (or anyone who relies on animations) to implement into their package.

[1] https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/A...

by justinc8687

4/7/2026 at 12:45:25 AM

You can use driver none to avoid transitions. And I’m working on reduce motion

by tinchox6

4/7/2026 at 12:53:18 AM

[dead]

by 8organicbits

4/6/2026 at 7:47:12 PM

Interesting way to use zooming as a way to transition deeper into sub-dashboards. The navigation from "Mission Control" -> "Satellite" -> "Subsystem" feels oddly intuitive and fun. I would maybe opt for keeping a consistent navbar/sidebar, to support out-of-zoom navigation. And if we are dealing with a lot of power-users some breadcrumb to quickly go back to any zoom-level. But overall, i think this could totally work.

by sijmen

4/6/2026 at 9:07:44 PM

Appreciate it! Breadcrumbs and back navigation are definitely on my radar.

by tinchox6

4/6/2026 at 8:07:05 PM

I really love this (and miss the days when Prezi was simple and straightforward).

I've written an app myself along sort-of similar lines, but it's less a presentation app and more a thought organizer (works on all Apple platforms). https://mindscopeapp.com

I think what proved key for my own "zoomable" UI was cross-linking, search, and speed/snappiness. Make the animations too heavy and it just slows you down. Zumly seems really great in this regard. Well done!

by epaga

4/6/2026 at 9:06:06 PM

Thanks! Speed was a big focus, glad it comes through. Your app looks really cool btw.

by tinchox6

4/8/2026 at 5:19:28 PM

Cool stuff!! Knowing CSS, the road must have been full of headaches and compromises.

by khalic

4/6/2026 at 9:26:04 PM

Really cool, like others are saying this makes you feel like you are interacting with all the pages at once instead of one page at a time.

I did notice that forward doesn't seem to work. I.E. If I click into a page, it zooms in, press back it zooms back out, press forward it flickers the url but doesn't have normal forward behavior.

I also don't know if you want to support `open in new tab` but that would be a hard req for many people.

by ericmcer

4/6/2026 at 9:41:06 PM

Good catch on forward navigation. Architecturally I don't keep a history of already-visited views, so forward has nowhere to go. It's something worth tackling though, especially for programmatic navigation flows. Open in new tab is on my radar too.

by tinchox6

4/6/2026 at 10:22:30 PM

Under the hood aren't you pushing things into the browser history as navigation happens? I wouldn't try to rewrite the history api myself but just make sure you `pushState()` as navigation happens.

by ericmcer

4/6/2026 at 8:32:47 PM

Love it. But there is a significant usability issue: Lack of signifier (aka affordance). How do I known when something is zoomable? Because there is no signifier, I am frequently disappointed when I click on something and it turns out it is not zoomable.

by lateforwork

4/6/2026 at 9:27:48 PM

that would be more on the consumer of the library than on the library imo.

Like I wouldn't expect any other frontend router library to decorate links for me in a certain way.

by ericmcer

4/6/2026 at 9:27:07 PM

Fair point. No visual cue for what's zoomable is a real gap. Thinking about how to handle that without cluttering the UI.

by tinchox6

4/7/2026 at 12:29:49 AM

Maybe an icon on hover or a small static icon but the latter could get repetitive, the hover would solve the repetition.

by handfuloflight

4/6/2026 at 8:03:21 PM

I'd say this is more of an interesting take on page transitions. I was expecting mouse wheel scroll to zoom, so I instinctively scrolled expecting some kind of zooming effect.

I remembered there was a website featured here on HN that had an interactive tour of the scale of the universe ranging from the very microscopic world (if I remember correctly I think it even went down to Planck length) all the way to the macroscopic (black holes, galaxies). I'd be interested in such a zooming library that achieves something like that.

by mochidusk

4/6/2026 at 9:29:12 PM

Yeah the scroll expectation comes up a lot. Scale of the Universe was scijs I think, different beast but a great example of zoom done right.

by tinchox6

4/6/2026 at 7:32:52 PM

This looks seriously impressive. Also, I wonder what the a11y implications are. I don't miss Macromedia Flash hell at all. This is HTML5, so with a bit of effort it could look beautiful and still cater to the visually impaired.

Edit: I can't scroll any of the showcases. Probably deliberate, but a cut-off UI can be annoying.

Edit2: I opened the yellow car on the production line and going back the page got all offscreen and looks messed up

by tosti

4/6/2026 at 9:09:21 PM

Thanks! The a11y angle is something I want to tackle properly. Noted the bugs too, the car one is a known issue.

by tinchox6

4/7/2026 at 12:10:29 AM

I turn of scroll events except on home assistant. You can enable or disable depending on your needs

by tinchox6

4/7/2026 at 9:45:56 AM

Has anybody built a UI around the opposite? Shrinking?

ie rather that zooming in on the content of interest, shrinking the content not of interest?

Long time ago I used to use https://www.windowmaker.org/ as my X11 window manager and one of the features I really liked was the ability to shrink a window to an icon and place that icon on the desktop for future retrieval ( a bit like having the whole desktop like the MacOS dock ).

I find such an interface easier to navigate than one where you zoom in and out - where the it's too easy to lose overall context, and where navigation is a bit too linear/hierarchical.

by DrScientist

4/6/2026 at 11:57:09 PM

My jaw did drop. This could pair really well with a hybrid bread crumb + menu that gives you an escape hatch or granular on demand traversal. Love it!

by handfuloflight

4/7/2026 at 12:08:28 AM

Thank you!!

by tinchox6

4/6/2026 at 9:11:12 PM

This is indeed seriously impressive. I keep wanting to keep my entire knowledgebase on a canvas so that I can "think" or navigate spatially. Thisis neat.

In the main landing page, as I was clicking around, I kept wishing to have a legend to show me either "how deep I am" or "how do I get out of here?", and like someone else commented, I would love an affordance showing me what was clickable/zoomable.

by TheTaytay

4/6/2026 at 9:36:09 PM

Thanks! Both the depth indicator and the zoomable affordance are things I'm actively working on. Glad the spatial navigation idea resonates.

by tinchox6

4/6/2026 at 7:52:55 PM

Doesn't work correctly in Firefox.

Feels sluggish, but maybe this could be fixed by reducing the transition time.

But why? People usually don't notice such transition effects and it doesn't affect user experience in any meaningful positive way. It feels absolutely unnecessary.

Maybe you could re-use it as a mod for some game engine. This feels appropriate for video games; not for web-sites.

by cynicalsecurity

4/6/2026 at 8:00:43 PM

I have the exactly opposite view, possibly with the same amount of conviction. It feels very necessary to communicate hierarchy and where things are coming from and going. It communicates a lot of important information and continuity. In real life, you don’t have things suddenly appearing and disappearing all the time. That’s not how our brains are conditioned.

by solarkraft

4/6/2026 at 9:33:35 PM

Firefox issues are real and I want to fix them. On the "why", fair to be skeptical, it's not for every UI. But I do think it makes sense when hierarchy needs to feel spatial.

by tinchox6

4/6/2026 at 8:39:57 PM

Weird, seems to work fine in Firefox on Android.

by jvdvegt

4/7/2026 at 6:49:09 AM

[dead]

by heyethan

4/7/2026 at 12:11:49 AM

It's extremely easy to break your landing page with the back swipe gesture on mobile safari.

by bschwindHN

4/6/2026 at 8:19:55 PM

I think zooming is effective when it's used in isolation for discrete things. It does add a sense of delight, but there is a functional usefulness of this that I'm trying to wrap my head around.. perhaps a transition effect for an immersive demo, etc.. nice work.

by tzm

4/6/2026 at 9:11:00 PM

Thanks! Yeah, immersive demos and dashboards are where it seems to click best.

by tinchox6

4/7/2026 at 12:39:00 AM

very well made :) for documentation and specific dashboards this has a lot of great uses

i played with a similar concept back when everyone was starting to 'drill down into big data' on their ipads, and i never came up with a clever way of drilling 'sideways', or allowing people to go between one 'insight' from one deep level and tie it into another without zooming all the way back out and then back in, contextual 'wormholes' (all handmade), or breadcrumbs (messy after enough layers)

one thing i'd add to the demo is detecting where i'm hovering over while scrolling to scroll into that part (on a mouse), scroll out works

by jareklupinski

4/6/2026 at 7:37:26 PM

Interesting. At one point I pinched my iPad to zoom out of habit and it got very confused. But yea, interesting.

by drob518

4/6/2026 at 9:31:14 PM

Ha, noted. Pinch conflicts are a known pain point on touch devices, need to sort that out.

by tinchox6

4/6/2026 at 9:55:18 PM

HA! I Love it! It's a been a while since I felt this sort of joy exploring a new way to navigate

by theflyinghorse

4/6/2026 at 10:45:20 PM

> remains the market leader in that space

TIL

by christoff12

4/6/2026 at 7:49:49 PM

Would suggest using history-api navigation over the hash based routing.

by tracker1

4/6/2026 at 9:32:21 PM

Good call, hash routing was the quick path. History API is on the list.

by tinchox6

4/6/2026 at 8:21:18 PM

The Home Assistant showcase looks fabulous.

by eisfresser

4/6/2026 at 9:12:41 PM

Glad you liked it! That one was fun to build.

by tinchox6

4/6/2026 at 7:57:57 PM

I have great respect for people pursuing their special interests with such perseverance - you clearly care about zooming UIs.

And so do I (just to a lesser extent)! It’s a great way to express hierarchy.

One thing I encountered is that it becomes all buggy after using the slide-back navigation gesture in iOS Safari. Yet this being natively handles would be a really cool thing to me, like those iOS “close back to thumbnail” gestures you sometimes see when scrolling up/down that I haven’t really seen replicated anywhere else.

by solarkraft

4/6/2026 at 9:15:33 PM

That means a lot, thanks. The iOS back gesture thing is tricky but would be really sweet to pull off.

by tinchox6

4/6/2026 at 10:07:17 PM

"Zooming UIs in 2026: Prezi, impress.js, and why I built something different"

by kabir_daki

4/6/2026 at 8:35:17 PM

[dead]

by syaz2