Which is Best and compatible Mozila Or Chrome?

I want to know Browser compatibility of each browser.

We test regularly in Firefox and Chrome. If you see bugs in any modern browser, please report them.

Both are good

Undoubtedly, its chrome as it is more secure, fast and has a number of extensions available.

Both are good browsers to go with but in my personal opinion I feel Firefox is a good choice to go with, reason being while using chrome I have faced the problem of cookies and it even hangs most of the time.
Firefox is a great browser to go with as it is the oldest browser that is still used by people.
Depending upon your device compatibility you can use any browser both are good to go with.