Turns out it is possible to easily pass data between different web pages, in less than 10 lines of code.

Timestamps:
00:00 Intro
00:40 Setup / Making UI
03:47 The LocalStorage Way
07:06 The BroadcastChannel Way
10:12 The PostMessage Way
14:35 Conclusion

--------------
My website: https://tonyzhang.net
My Github: https://github.com/Tony1324
Contact me: [email protected]