0👍
Why don’t you simply use this part:
<a href="https://firebasestorage.googleapis.com/v0/b/q-aviationdev.appspot.com/o/4%2F98906.jpg?alt=media&token=e19f9317-79c7-46d2-a758-40309b4c4f0f" download="Testiamge.jpg">
<img alt="ImageName" src="https://firebasestorage.googleapis.com/v0/b/q-aviationdev.appspot.com/o/4%2F98906.jpg?alt=media&token=e19f9317-79c7-46d2-a758-40309b4c4f0fe">
</a>
If you want to use a button, you can try this code:
<a href="https://firebasestorage.googleapis.com/v0/b/q-aviationdev.appspot.com/o/4%2F98906.jpg?alt=media&token=e19f9317-79c7-46d2-a758-40309b4c4f0f" download>
<button>Download image</button>
</a>
If you are using IE, try this one:
<a href="https://firebasestorage.googleapis.com/v0/b/q-aviationdev.appspot.com/o/4%2F98906.jpg?alt=media&token=e19f9317-79c7-46d2-a758-40309b4c4f0f" download target="_blank">Download image</a>
Source:stackexchange.com