Slimcord by sxthsns

Discord's web app spends a lot of screen space on the server list and chat list, even when your window is narrow or tiled next to something else. Slimcord hides them automatically once the window gets small, and gets out of the way completely — hover near the edge and they slide back in.

What it does

Hides the server list below a width you set (1100px by default)
Collapses the chat list below a second width you set (800px by default)
Hover near the edge to peek at chats without permanently expanding them
A small floating dock lets you toggle either list by hand, and snaps back next to Discord's Inbox icon with a double-click

Who this is for
If you stream, setting both lists to "Always hidden" keeps your server names, DM list, and friends list off camera without resizing the whole app or hiding it between scenes. If you just keep Discord tiled next to another window or on a laptop screen, it gets the sidebar clutter out of your way and gives the actual conversation more room. Either way, the layout stays clean and minimal without losing anything — everything's one hover or one click away.

Privacy
Slimcord makes no network requests and collects no data of any kind. Your settings are stored locally by Firefox and never leave your device.

Works on discord.com, canary.discord.com, and ptb.discord.com.