You should use cloudinary to host your images and you can serve them in a format that's optimized by browser, e.g. in chrome you'll get a webp, in ie you'd get a jpg.
Edge supports webp, and the next version of Safari too. However you can use Cloudinary to do the format selection automatically - It's free forever up to 25GB of traffic/month.
How do I convert GIF to webm?
Also, about webm and webp, I am worried about caniuse in Edge / IE...
You should use cloudinary to host your images and you can serve them in a format that's optimized by browser, e.g. in chrome you'll get a webp, in ie you'd get a jpg.
You can make use of CSS @supports feature to check if the browser support WEBP images. If not than it'd load PNG, JPG instead.
Edge supports webp, and the next version of Safari too. However you can use Cloudinary to do the format selection automatically - It's free forever up to 25GB of traffic/month.
See akshayranganath.github.io/How-to-m... for easy instructions.
There are many online converters like ezgif and convertio.