Is Spline bad for performance?

It can be. Spline scenes are relatively heavy and can add megabytes to a page. Always test embeds on a mid-range mobile device, as desktop previews are not representative.

What is a Rive state machine?

A system for defining animation states and the transitions between them, so your app can drive the animation based on real events — loading, success, error, hover — rather than playing a fixed timeline.

Which is better for mobile apps?

Rive. Its file sizes are tiny, its runtime performance is strong, and it has native runtimes for iOS, Android, Flutter and React Native. Spline is web-first and considerably heavier.

Can you use Spline and Rive together?

Yes, and many teams do. A common split is Spline for the marketing site's 3D hero and Rive for animation inside the product, where file size and responsiveness matter most.

Spline vs Rive: 3D and Motion for the Web

DDezignhunt Editorial5 min readComparisons

Last updated: August 2026

These two get compared because both produce animated things that end up on websites, and both sit outside the traditional design toolchain. Beyond that they have almost nothing in common.

Spline is 3D. Objects, cameras, lighting, materials, in a real three-dimensional space. Rive is 2D interactive vector animation. Characters, icons, UI states, driven by a state machine.

If you know which of those you need, the comparison is already over.

The best new design tools, once a week.

One short email. No noise, unsubscribe anytime.

Key takeaways

Need a 3D object, product render or spatial scene → Spline
Need an animated icon, character, or interactive UI state → Rive
Rive files are tiny; Spline scenes are heavy and can hurt performance
Rive's state machine makes animation respond to real app state — nothing else does this as well
Both have generous free tiers

Spline

AI Toolsfree

Browser-based 3D design tool

Visit site View on Dezignhunt

Spline — browser-based 3D without Blender

Spline brings 3D design into the browser with a learning curve a designer can actually survive. Model or import objects, set up materials and lighting, add interactions and scroll triggers, then embed the result in a website.

Its real achievement is accessibility. Blender is more powerful in every dimension and takes months to learn. Spline takes an afternoon, which is why 3D suddenly appeared on so many landing pages.

Strengths: genuine 3D, real-time collaboration, straightforward web embedding, interactive and scroll-driven scenes.

Weaknesses: performance is the persistent issue. A Spline scene can add megabytes and tax lower-end devices. It's also not built for animation sequences in the way a motion tool is.

Heads up

Test any Spline embed on a mid-range Android phone before shipping. The desktop preview is not representative, and this is where these scenes most often fail.

Rive — interactive animation with a brain

Rive is 2D vector animation with a state machine, and the state machine is the whole point. Instead of exporting a fixed animation loop, you define states and transitions, then let your application drive them — hover, loading, success, error, progress.

The result is animation that responds to what's actually happening rather than playing on a timer. A loading spinner that transitions into a checkmark when the request resolves, rather than a video of that happening.

Strengths: very small file sizes, excellent runtime performance, runtimes for web, iOS, Android, Flutter and React Native, and genuinely interactive output.

Weaknesses: 2D only, and the state machine concept takes a real mental adjustment for designers used to timelines.

Rive isn't currently in our directory — for adjacent tooling see

Browse 500+ design tools

LottieLab

Design Toolsfree

Create and ship animations to your products faster

Visit site View on Dezignhunt

LottieLab and

Jitter

Design Toolsfree

Collaborative motion design tool

Visit site View on Dezignhunt

Jitter, which cover Lottie-based motion design.

Head to head

	Spline	Rive
Dimension	3D	2D vector
Output	3D scene, embed	Vector animation + state machine
File size	Heavy (MB)	Very light (KB)
Interactivity	Scroll, hover, click	Full state machine, app-driven
Performance	Can be a problem	Excellent
Platforms	Web-first	Web, iOS, Android, Flutter, RN
Learning curve	Moderate	Moderate, different mental model

Which do you need?

Hero section with a rotating 3D product → Spline
Animated icon that changes with UI state → Rive
Spatial or immersive landing page → Spline
Onboarding illustration that reacts to progress → Rive
Character animation in an app → Rive
Abstract 3D shapes as visual texture → Spline
Mobile app animation → Rive, without hesitation — the file size and runtime story is decisive

They coexist happily. Spline for the marketing site's hero, Rive for the in-product animation. Different jobs, different constraints, no conflict.

See also Rive vs Lottie if you're choosing an animation format, and our full design tools directory.

Frequently asked questions

Spline is a browser-based 3D design tool for objects, scenes and spatial layouts. Rive is a 2D interactive vector animation tool built around a state machine that lets your application drive the animation.