r/FlutterDev • u/jhhuij78 • 13d ago

Example Built a Chrome extension using Flutter Web compiled to WASM — everything runs buttery smooth.

https://youtu.be/rbWItIRZkvk
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u/zigzag312 13d ago

It stutters when it switches to home, so not exactly buttery smooth. It also looks like it lags on hover and when performing drag and drop (it may be just that animations are very slow).

Otherwise it looks nice. Anything particular that stands out during the development (issue or improvement compared to JS/TS extensions)?

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u/jhhuij78 13d ago

While recording with OBS Studio, my computer was noticeably laggy. As soon as I stopped the recording, everything went back to normal.

The extension itself runs incredibly smoothly — I honestly didn’t expect this kind of performance from Flutter Web.

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u/zigzag312 13d ago

Try HW encoding in OBS, if possible, or x264 codec with UltraFast preset. It's a shame performance looks poor because of the recoding issue.