[HN Gopher] AnimeJs v4 Is Here
       ___________________________________________________________________
        
       AnimeJs v4 Is Here
        
       Author : adrianvoica
       Score  : 857 points
       Date   : 2025-04-03 14:47 UTC (1 days ago)
        
 (HTM) web link (animejs.com)
 (TXT) w3m dump (animejs.com)
        
       | adrianvoica wrote:
       | It's showtime!
        
         | billconan wrote:
         | I'm amazed by the landing page.
        
           | ayhanfuat wrote:
           | The whole documentation is so slick.
        
       | JusticeJuice wrote:
       | This is so cool.
        
       | rgovostes wrote:
       | Are there authoring tools available, as with Lottie, or is it
       | code-only?
        
       | thih9 wrote:
       | I like that I can grab and drag the browser's scroll indicator
       | and the animation updates seamlessly (safari mobile).
        
         | captn3m0 wrote:
         | I get a black screen with a scroll bar. Lockdown mode on iOS.
        
           | UncleBen wrote:
           | Most likely due to iOS lockdown mode disabling WebGL
           | rendering.
        
             | Arnavion wrote:
             | Same for me on desktop Linux Chromium (with and without
             | incognito mode), and yes console prints WebGL errors:
             | 
             | > scripts.js?v=1:3820 THREE.WebGLRenderer: A WebGL context
             | could not be created. Reason: Web page caused context loss
             | and was blocked
             | 
             | > scripts.js?v=1:3820 THREE.WebGLRenderer: A WebGL context
             | could not be created. Reason: Failed to create a WebGL2
             | context.
        
           | thih9 wrote:
           | > When Lockdown Mode is enabled, your device won't function
           | like it typically does. (...)
           | 
           | > Web browsing - Certain complex web technologies are
           | blocked, which might cause some websites to load more slowly
           | or not operate correctly.
           | 
           | https://support.apple.com/en-us/105120
        
         | Washuu wrote:
         | It responds to the scrolling, leaving agency to the user,
         | instead of hijacking scrolling, that steal agency from the
         | user, that some web sites do. It's so much better of a solution
         | and friendly to accessibility.
        
         | bbx wrote:
         | TIL you can grab the scroll bar on iOS!!
         | 
         | Thanks for this. Jumping to the bottom of a page was such a
         | chore for me.
        
       | majora2007 wrote:
       | This is insane. API looks great, landing page is the best thing
       | I've ever seen and just so feature rich. I wish I had a way to
       | use this in my primary application.
        
       | anon1094 wrote:
       | Awesome landing page
        
       | jacobgkau wrote:
       | Scrolling through that landing page felt a lot smoother &
       | snappier than I would've expected for a page looking like that.
        
         | adrianvoica wrote:
         | Julian (the author) is a genius. v4 has been in the making for
         | some time, but, boy, is it worth the wait! I have used v3 (I am
         | using it on my landing page and even built a small game engine
         | with it), but this version is on a whole new level. Congrats to
         | the author! Keep up the good work!
        
           | MrMcCall wrote:
           | > Julian (the author) is a genius.
           | 
           | With proof!
           | 
           | I have rarely been so impressed with a web tech.
        
             | Rendello wrote:
             | It reminds me how I felt when I first saw the recursive
             | GoL:
             | 
             | https://oimo.io/works/life/
        
         | wigster wrote:
         | yeah. i'm normally not a big fan of these scroll down and
         | "shit-happens" sites, but that is VERY slick and cool. super
         | nice.
        
           | robertlagrant wrote:
           | Yes - exactly. If they were that smooth and looked that good,
           | I'd like more of them. So creative.
        
           | loxs wrote:
           | Yeah, this is the one place where doing it like this is 100%
           | appropriate.
        
         | qoez wrote:
         | I think part of the trick is that each unit of scrolling takes
         | you quite far down the animation sequence (so scrolling doesn't
         | feel like a long effort)
        
         | ryandrake wrote:
         | It's clever, but honestly I don't care how smooth it is.
         | Scrolling should simply scroll a view up or down a page. Not
         | invoke animation. We already have established UX patterns for
         | playing media, slowing it down, speeding it up, randomly
         | seeking through it.
        
           | mcluck wrote:
           | False. Let the web be fun again
        
           | robertlagrant wrote:
           | Animation isn't really "playing media".
        
           | jacobgkau wrote:
           | Part of the smoothness here is that scrolling the text is 1:1
           | once you get down to the sections with colored headers. It
           | demonstrates that it's possible to make a page look fancy
           | like that without "breaking" your intuition of what scrolling
           | "should be."
           | 
           | JS animations obviously don't take the place of video/audio
           | media that you'd play/scrub through.
        
             | JulianGarnier wrote:
             | Hey I'm the author of the lib, exactly, I don't really
             | "highjack" the body scroll, I'm only controlling the
             | background animations with it, while keeping most of the
             | body content scroll naturally with the page.
        
           | jonwinstanley wrote:
           | So what would you suggest to use to move the animation
           | forward?
        
             | hoc wrote:
             | That missing Playdate phone accessory.
        
             | evilduck wrote:
             | Submitting a form repeatedly by hammering enter and having
             | a new HTML fragment rendered on the server deliver the next
             | frame, obviously.
        
               | dalmo3 wrote:
               | AnimeNoJs
        
             | throwaway290 wrote:
             | not use animation in the first place :)
        
           | derac wrote:
           | For most websites, sure. For this website? It makes sense,
           | it's a great demo for the product.
        
           | johnsanders wrote:
           | It's not so much about playing/slowing/speeding up an
           | animation or video. It's about moving forward and backward
           | through an "experience," as much as I dislike the overuse of
           | that word. I'd suggest it's a natural evolution of the scroll
           | behavior.
        
         | azemetre wrote:
         | Do they explain how they made the landing page or share the
         | code somewhere? I agree, it's stunning.
        
           | chilmers wrote:
           | There is a gh-pages branch, but it is generated from a
           | private repo: https://github.com/juliangarnier/anime/tree/gh-
           | pages
        
           | JulianGarnier wrote:
           | Hey I'm the author of the lib, I'm thinking about making a
           | course on how to re-create the landing page, would that be
           | something you're interested in?
        
             | bhattisatish wrote:
             | Oh yes!
        
             | firefoxd wrote:
             | Double yes
        
             | DirkH wrote:
             | Most certainly yes
        
             | TheTaytay wrote:
             | Literally what I came here to find! Incredible work!
        
             | azemetre wrote:
             | Yes please, is there a site or something that you have to
             | collect emails for those interested?
        
             | yosef123 wrote:
             | Don't want to sound repetitive, but yes
        
         | rk06 wrote:
         | I don't even remember seeing such a fantastic landing page in
         | long time. it makes you realise how bad others are.
        
         | aitchnyu wrote:
         | Does it provide fewer footguns for less experienced devs
         | though?
        
       | leptons wrote:
       | Love that the source is in Javascript, with type annotations. The
       | compiled files in the /lib folder are also much smaller than I
       | expected. I will likely be using this.
        
       | pacomerh wrote:
       | I love how CSS Transforms are so efficient. This is a great
       | lightweight alternative over GSAP.
        
       | steve_adams_86 wrote:
       | I can't speak to what it's like to actually work with this, but I
       | really like the API design and docs. This feels really well
       | thought out. Looking through the timer docs for example, it took
       | just a minute or so to understand what the timer API can do and
       | how to do it. This gives me a lot of confidence to try out the
       | library.
       | 
       | As others have said, beautiful work on the lander. It looks and
       | performs beautifully.
        
       | pentagrama wrote:
       | Wow, that homepage was one of the more complex and layer filled
       | interactive animations that I ever seen running so smoothly on a
       | mobile browser. Those FPS feel like a Doom 2016 on a beefy PC.
        
       | monetus wrote:
       | This works really well on the less conventional android browsers
       | I use. Kudos to them, says good things about the library.
        
       | iamunr wrote:
       | These docs are a work of art themselves, fantastic.
        
       | cynicalpeace wrote:
       | this is chef's kiss
        
       | Nijikokun wrote:
       | I thought the main site was amazing, then I saw the docs.
       | Absolutely amazing work. Well done. Extremely excited to try out
       | WAAPI.
        
       | flufluflufluffy wrote:
       | This is INCREDIBLE. What! I could spend hours just playing around
       | with the hecking documentation pages. EVERYTHING is so well
       | thought out AND presented. I'm in awe.
        
       | yakshaving_jgt wrote:
       | Whomever designed that interactive landing page animation
       | deserves some kind of Nobel prize.
        
       | melodyogonna wrote:
       | Finally. AnimeJS is such an amazing project, congratulations on
       | the release.
        
       | Tade0 wrote:
       | I love how breaking changes in the latest version are shown as
       | diffs.
        
       | jbverschoor wrote:
       | I can feel the rotary dials tick on my mouse scrollwheel :-)
       | 
       | How was the model on the homepage created?
        
       | wilfredk wrote:
       | The animations in the docs page is crazy informative, interactive
       | and fluid.
        
       | wg0 wrote:
       | Anyone remembers DHMTL from Internet Explorer 4.0? From that - to
       | this. What an evolution of web technologies.
        
         | manx wrote:
         | Haha, yes. Ist was a great time. document.all etc
        
         | philsnow wrote:
         | I was just working on a "web app" for personal use yesterday
         | where I'm doing document.getElementById and so forth. It still
         | works -\\_(tsu)_/-
        
       | p2hari wrote:
       | just as others mentioned, the whole landing page and the docs
       | page is really nice work. It was loading well and the final
       | scroll to bottom :). Thanks for the library and the work put in.
        
       | A_Stefan wrote:
       | I remember using the same library few years ago for a stagger
       | effect. Glad to see it's still alive and doing even better. The
       | intro experience was beautifully crafted. It has me convinced to
       | add an use to my projects
        
       | qgin wrote:
       | This is the first time I haven't hated scroll hijacking. That was
       | actually really smooth.
        
         | albedoa wrote:
         | Part of why it is less offensive is it's not actually hijacking
         | our scrolling: https://news.ycombinator.com/item?id=43572887
         | 
         | Scroll hijacking is when I try to scroll normally but the page
         | overrides my distance and velocity.
        
           | tiltowait wrote:
           | It definitely feels "heavy" on mobile Safari. The animation
           | is buttery smooth, but the little space station thing doesn't
           | rotate as quickly as I feel it should based on my scroll
           | velocity.
           | 
           | I feel like I'm alone in not liking it. The technical
           | accomplishment is undeniably impressive, and the author
           | deserves serious kudos for that, but I really wish websites
           | wouldn't do this sort of thing. It's far less usable than
           | just having some static tables.
        
         | jonwinstanley wrote:
         | I'm not sure that was scroll hijacked. It all moved at the
         | right speed
        
         | cess11 wrote:
         | I think they just measure the scrolling and drive the
         | animations with it. Maybe that's what you mean by hijacking.
        
       | maelito wrote:
       | How does it compare to Motion ?
        
         | dkersten wrote:
         | That's what I came here to ask too. This looks wonderful, but
         | I'm already using Motion quite a bit. I'm also using React and
         | am unsure how well Anime.js pairs with that while Motion has a
         | first party react library.
         | 
         | In any case, like everyone else here, I'm very impressed with
         | OP's site and documentation. Very slick!
        
           | xico wrote:
           | The first page in the documentation, Getting Started, gives a
           | React sample: https://animejs.com/documentation/getting-
           | started/using-with...
        
             | dkersten wrote:
             | Ah, I looked at the examples but I guess I missed this.
             | Thanks!
             | 
             | So it basically works outside of react land -- you can
             | animate your component but it's applied after react renders
             | it. It's nice to see an example and that it works, but I
             | suppose it does mean there are certain things it's unable
             | to do, such as animating on component removal (Motion does
             | this by adding a wrapper component that detects when its
             | children are removed, I suppose it's not something you can
             | achieve without special react specific support)
        
       | XCSme wrote:
       | The landing page is amazing!
       | 
       | The only issue I found with it was when checking the responsive
       | layout example, I tried to resize my browser window and then the
       | scroll was reset to top :(
        
         | bleuarff wrote:
         | Handling resize is a different beast than being responsive.
         | Working for every viewport dimension under the sun is not the
         | same thing as gracefully handling an animation while the
         | viewport size changes - the latter is much more challenging.
        
           | XCSme wrote:
           | I agree, I was not even expecting it to handle the resize
           | well. I just thought the landing page wanted me to resize my
           | window to test responsiveness (before I noticed that the
           | animation itself changes the content area size).
           | 
           | That being said, when resizing a window, the scrollbar should
           | not reset/jump to top. At the very least, it should revert to
           | what it was when going back to full size.
        
       | shmerl wrote:
       | Very cool presentation page!
        
       | rocketvole wrote:
       | This might just be the thing that makes me seriously learn js
        
       | rsingla wrote:
       | I cannot believe this is real, it was so well done. It felt like
       | creativity of the internet from the early 2000s met the polished
       | design standards of today.
        
         | JulianGarnier wrote:
         | Hey I'm the author of the lib, I think this is my favorite
         | comment about the landing page I read so far. I've started
         | learning web development with Flash in the 2000s, so this hits
         | home. Thank you!
        
       | Agree2468 wrote:
       | Completely black for me, FF on Windows.
        
         | rk06 wrote:
         | Probably you have blocked webgl. Or something else. It loads
         | for me, and I am also on Firefox on windows 11
        
       | EQYV wrote:
       | This is beautiful!
        
       | drschwabe wrote:
       | Bravo, been looking forward to this but AnimeJs v3 has just been
       | so solid for so long honestly you did amazing on v3 that v4 is
       | just icing on top; excited to try this out on my next project.
       | 
       | async/await + animation (ie- with AnimeJS) is highly underrated.
       | 
       | And mad props for skipping the now dying trend of refactoring
       | entire codebase to TypeScript :)
        
       | solid_fuel wrote:
       | I love it, but... Going to this page
       | https://animejs.com/documentation/scope/ with ublock origin
       | enabled in my Firefox (136.0.3) immediately crashes the tab.
       | Which certainly made for a funny experience right after scrolling
       | through the very impressive intro animation.
        
         | chrismorgan wrote:
         | Ooh, fun, reproducible on Firefox for Android. Crash signature
         | [@ JS::Heap<T>::exposeToActiveJS ].
        
           | makeworld wrote:
           | Not seeing this with 137.
        
         | vvillena wrote:
         | I can confirm. It's not a 100% occurrence, but browsing through
         | that section ends up crashing the tab.
        
       | kilolympus wrote:
       | It could just be me running a CPU that's too old or an
       | unconventional browser (Microsoft Edge), but the website is
       | _extremely_ laggy (less than 1 update per second) and the tab
       | immediately starts using 80% of my CPU with fans blaring. Got an
       | 8th gen Intel i7 if it matters.
        
         | spartanatreyu wrote:
         | What GPU do you have?
        
           | kilolympus wrote:
           | It's a laptop GPU - there's the integrated Intel UHD Graphics
           | 620 card and the dedicated NVIDIA GeForce MX150. Both are
           | pretty old (6-7 years?) but are capable of running most 3D
           | games so I was a bit surprised.
           | 
           | EDIT: P.S. What might help debug is that I have hardware
           | acceleration enabled in the browser, but the GPU is not doing
           | any work on the animejs homepage. For e.g. YouTube, the GPU
           | does a lot of work so I've verified hardware accel works.
        
         | SwiftyBug wrote:
         | There's nothing unconventional about Microsoft Edge. It's
         | pretty much Chrome.
        
       | true_blue wrote:
       | the website is just a blank black page for me no matter how long
       | I wait. clearly that's not what it's supposed to be going by the
       | other comments, so that's a bit disappointing.
        
         | spartanatreyu wrote:
         | What does your network tab in the browser's dev tools show?
        
           | true_blue wrote:
           | just a bunch of status 200 GET requests. a few are scripts,
           | but mostly just images
        
         | Hackbraten wrote:
         | Same here on Firefox 128 ESR.
        
       | FlorianRappl wrote:
       | This is why I love HN. Not sure if I would have gotten the
       | memo... Impressive tech, useful lib, super awesome landing page.
       | Just blown away!
        
       | yamihere wrote:
       | Just joining in with the "Wow, this is amazing" crowd. I usually
       | detest websites that dink with scrolling to animate content in
       | and out of view, except for well designed long form narrative
       | content; but this is slick.
       | 
       | A challenge to all the "10x-ed my productivity" LLManiacs: how
       | long to recreate this landing page using nothing but prompts (and
       | how much $$ for a how-to course :)
       | 
       | A challenge to the "the're gonna take our jobs" LLMongers: git
       | gud, its possible. this is living proof.
       | 
       | (yes, i did just want to post those portmanteaus, even though it
       | was all ChatGPT: https://pastebin.com/zrsj6DcB )
        
       | skeptrune wrote:
       | I feel like web tech is getting a lot more mature and reliable.
       | Just my personal vibe-read, but JS libs on the whole seem to be
       | getting to be consistently hitting higher quality bars.
        
       | matt3210 wrote:
       | No anime here :(
        
       | mrbluecoat wrote:
       | I stared at the homepage on my smartphone for a while and thought
       | "That's really quite good." Then I started scrolling...
       | 
       | <mind>me</blown>
        
       | card_zero wrote:
       | This cartoon show is almost like a web page!
       | 
       | Incidentally it crashed the browser the second time I looked at
       | it.
        
       | esafak wrote:
       | Are today's LLMs capable of writing code using these animation
       | libraries? Could you replicate the landing page from its
       | description, for example?
        
       | yieldcrv wrote:
       | this is amazing, in my experience I haven't found much utility
       | for visualization heavy UX. Like professionally.
       | 
       | I have spun up landing pages and things for things I've
       | monetized. The crypto crowd loves it. But I don't put that stuff
       | on my resume
       | 
       | What do you all use snazzy UX for?
       | 
       | I do find creating and expressing myself this way to be
       | fulfilling though. Which is good enough, I just never considered
       | myself doing it for the art and art communities. Websites aren't
       | really consumed that way.
        
       | notepad0x90 wrote:
       | Devs, please don't use this. it is unusable for me when browsing
       | in a VM with a pretty snappy internet connection. The only other
       | site that has compute/graphics resource issues for me is Netflix
       | (its competition Prime, Youtube,etc.. have no issues, so i can
       | only presume bad software dev decisions).
        
         | SeanAnderson wrote:
         | This has nothing to do with internet connection and everything
         | to do with hardware accelerated graphics.
        
           | notepad0x90 wrote:
           | I understand that, I meant they made the choice to use power
           | and resources on the client end when internet bandwidth is
           | abundant and they can utilize server resources for cpu
           | intensive workload. Design choices such as these are exclude
           | anyone who can't afford decent hardware and are inefficient
           | in terms of power/energy usage.
        
             | SeanAnderson wrote:
             | If they made the opposite choice then people would argue
             | that they're not prioritizing bandwidth for those with poor
             | internet connections like those living in rural areas or
             | third-world countries. My gut says it's much more likely
             | that clients have access to a discrete GPU than they do to
             | broadband Internet. I also do not believe it would be
             | possible to deliver the experience they're shipping with
             | pre-rendered assets shipped over the wire, or, at the very
             | least, I can't readily conceptualize how that would be
             | implemented.
             | 
             | I feel it's totally within scope for an animation-focused
             | library to expect clients to have GPU hardware
             | acceleration. The fact you're running in an isolated
             | environment, and haven't configured it to be able to use
             | your host machine's GPU (which is possible!), feels niche
             | enough to me to write off.
        
               | notepad0x90 wrote:
               | I can only speak from my experience, and it is bad. If
               | there are enough people that like this, then of course
               | this should be a good library to use. but I'm just
               | expressing my experience and feedback that I usually
               | don't expose my gpu and cheaper hardware has less gpu
               | power. GPU also uses a lot of energy (did everyone stop
               | caring about that?). Browsers are already using too much
               | power. I've seen other services like netflix vs prime as
               | I mentioned earlier where I'm getting the same bandwidth
               | utilization but less performance because someone at
               | netflix decided to not care about cpu/gpu usage. I'm just
               | asking for devs to be considerate unless the target
               | audience is clearly people who have lots of gpu and don't
               | care about energy usage (like graphics editors,vfx
               | workers,etc..)
        
       | revskill wrote:
       | The web is powerful.
        
       | iamsaitam wrote:
       | Amazing homepage, congratz!
        
       | ViscountPenguin wrote:
       | Wow, this is incredibly laggy on Ubuntu Firefox...
        
       | nicman23 wrote:
       | no bad programmers
        
       | skerit wrote:
       | Looks very nice!
       | 
       | Having said that: I severely hate content in this form, where you
       | have to scroll like your life depends on it just to read a
       | paragraph or two.
        
         | dominicrose wrote:
         | Didn't even see we could scroll until I read this. Clicked on
         | examples instead.
        
       | kamranjon wrote:
       | I was absolutely floored by the website, what a way to knock it
       | out of the park.
       | 
       | I have never heard of this library before, but it's going to
       | stick in my head the next time I'm looking for a JS animation
       | lib.
       | 
       | Definitely kinda highlights the importance of first impressions.
        
       | cess11 wrote:
       | Quite impressive, and the showcase of breaking changes on the git
       | repo gives the impression this release comes with a much nicer
       | API than the previous one.
        
       | donatj wrote:
       | Ooh, this reminds me a lot of MooTools' optional FX package back
       | in the early aughts. I've still got it in a couple places because
       | it's been difficult to replace.
        
       | wwdx wrote:
       | Are there any example projects built with this?
        
       | photonthug wrote:
       | Probably a dumb question but.. Is the 3d exploding diagram model
       | of the engine here just a visual metaphor for a complex system
       | working in sync with itself? Or actually created using the
       | toolkit? I flipped through the API and everything appears to be
       | lower-level animation support, but intro gives the impression
       | that it's CAD-like.
        
       | nedt wrote:
       | The one thing I'm missing is the brag page. Knowing GSAP I'd
       | really like to see why it would be better. It doesn't have to be
       | a fair comparison. Greensock can then say why they'd still be
       | better. But as we do have options it would be nice to see where
       | they match and where they differ.
        
         | numa7numa7 wrote:
         | And Pixi
        
         | braebo wrote:
         | If you read the source of both and spend 5 minutes on the
         | issues of each and you will see that GSAP is a dated turd with
         | more layers of cruft than photoshop and they still can't do ESM
         | or Typescript right even though they charge money for important
         | features.
         | 
         | AnimeJS is S-tier, up there with Pixi in quality, albeit
         | smaller scope. V3 was a bit rough but v4 has been baking for a
         | long time.
         | 
         | The performance, code quality, ease of use, size, everything is
         | worse in GSAP.
        
       | bobajeff wrote:
       | This runs surprisingly very smoothly even on my phone's browser.
       | 
       | This looks to be rendered in real time. I feel this kind of 3d
       | animation would be difficult for me to achieve in blender on my
       | PC.
        
       | mfru wrote:
       | this felt shockingly smooth, what a great job!
        
       | Myrmornis wrote:
       | I'm interested in creating animated technical diagrams. I'm
       | looking for something high level that would allow rapid progress
       | on prototyping a diagram. Perhaps vaguely analogous to manim, but
       | either native JS or producing lightweight assets that can be
       | hosted in a web page. Does anyone have any suggestions?
        
       | h2zizzle wrote:
       | Still waiting for the WYSIWYG GUI-base authoring tool for a web
       | animation API. You know what artists - animators - generally
       | don't like? Wading through docs and code to spin a square. It's
       | been about a decade since the average of the various watersheds
       | in the slow death of Flash, and we still don't have a
       | replacement.
        
         | graypegg wrote:
         | I honestly think it's https://godotengine.org/features/, though
         | I do think the GUI-only WYSIWYG creation flow hits a brick wall
         | a little earlier than Flash did. Lots of content being made
         | with it though!
         | 
         | https://docs.godotengine.org/en/stable/tutorials/animation/i...
        
           | h2zizzle wrote:
           | If you're being honest with yourself, not even close. Maybe
           | if you Frankenstein Blender for asset creation and
           | Godot/Unity for scripting, but it would be just as much of a
           | monster as Shelley's.
        
         | another_kel wrote:
         | Have you tried https://rive.app/ ?
        
       | AlienRobot wrote:
       | Eh, that's cute.
       | 
       |  _scrolls down_
       | 
       | Wow. Okay.
        
       | Mr_Eri_Atlov wrote:
       | This looks amazing, is there a plugin to convert CAD parts for
       | use like this? Exploding part views in this style would look so
       | fantastic.
        
       | terpimost wrote:
       | Looks cool. Os there any comparison with Green Sock?
        
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       (page generated 2025-04-04 23:02 UTC)