SubredditViewer runs entirely in your browser using your own free Reddit API app —
no shared keys, and your credentials never leave your machine. One-time setup:
Go to reddit.com/prefs/apps
(while logged in to Reddit) and click create app (or create another app).
Choose type installed app, pick any name, and set redirect uri to
Click create app, then copy the client ID — the short string shown
directly under "installed app" — and paste it below.