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SVG Text jitter animation

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This thread was started before GSAP 3 was released. Some information, especially the syntax, may be out of date for GSAP 3. Please see the GSAP 3 migration guide and release notes for more information about how to update the code to GSAP 3's syntax. 

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Hi guys,

I'm developing a "whiteboard animation" style presentation using GSAP. I simulate the camera movement transforming a group that contains all svg content. Everything animates smoothly except the text nodes, that jump a lot, specially in iOS Safari. I tried to isolate the problem in the attached codepen.

Is there a way to avoid this behavior?, I tried changing "will-change" attribute without success...

See the Pen GQwYyx by rimeiQuer (@rimeiQuer) on CodePen

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That actually has nothing to do with GSAP - it's a browser rendering thing. There's some pixel snapping that seems to happen in certain conditions. text-rendering doesn't help either (at least from my tests): https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/text-rendering


The only thing that appeared to help is if you apply a tiny amount of rotation so that it forces the browser not to snap those pixels. So even a rotation of 0.1 can help. Does that fix things for you? 

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I was playing with the rotation solution as well. It seems that using a slight rotation helps in desktop Chrome and Firefox, but in Safari and mobile browsers still looks terrible.

I found that text-rendering solves the problem!! If I use text-rendering: geometricPrecision, the animation runs smoothly in desktop Safari and mobile browsers (at least on iPhone). On mobile the text strokes seem a little more thicker, but the movement is fluid.

I modified the codepen with the results that work in my tests.


Thank you @GreenSock and @Jonathan !! You saved my day :)

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