Technologies
Lottie
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Lottie is a library for Android, iOS, Web and Windows that exports animations made in Adobe After Effects to JSON format and renders them natively in the mobile device application and in the web browser. This allows designers to create and deliver beautiful animations without involving the developers.
Instead of using GIF or embedding MP4, there is reference to JSON in the page code, which significantly improves the quality score and front-end load speed.