As a Firefox user I can confirm this does indeed crash Firefox. It however also crashes Chrome to an extent (at least on Windows) you get the aw snap page shortly after it loads.
Seems like it just overloads the browser using this technique in the URL: data:text/html,<script>location+=location+'A'.repeat(100000000);</script> - I haven't tested in any other browser, but to me that technique would crash any browser, probably even worse on mobile.
Comments
As a Firefox user I can confirm this does indeed crash Firefox. It however also crashes Chrome to an extent (at least on Windows) you get the aw snap page shortly after it loads.
Seems like it just overloads the browser using this technique in the URL: data:text/html,<script>location+=location+'A'.repeat(100000000);</script> - I haven't tested in any other browser, but to me that technique would crash any browser, probably even worse on mobile.