How to get a smaller game window(lower resolution)?

zzzyyds1

L1: Registered
Sep 27, 2023
4
0
How can I set the game resolution to lower than 640*480? I have tried some methods to make the window size lower than 640*480, but it was detected by the system and I was unable to enter the game. What startup items should I use or how to edit autoexec.cfg that can Let the game window size of Team Fortress2 be lower than 640*480