Bulk Steam Nicknames by niko

Bulk Steam Nickname is a browser extension that lets you apply and manage Steam nicknames in bulk using the Steam friends page. Add your SteamID64s and nicknames manually or via CSV input, and all nicknames are applied in bulk using your Steam session. Includes optional nickname prefixing, automatic adding of friends, and automatic cleanup for users who are no longer in your list.

Features:
- Bulk nickname and adding application from table or CSV
- Optional nickname prefix support
- Optional friend request support
- Automatically remove outdated nicknames using your prefix
- Session-based: no login or external server required