Telegram Web Viewer от RicardoCa

Telegram Web Viewer adds a compact movable toolbar to Telegram Web.

Features:
- Collapse or expand the left sidebar.
- Enable wider message bubbles so long messages have more horizontal space before wrapping.
- Drag the toolbar to a preferred position.
- Double-click the drag handle to reset the toolbar position.
- Works on Telegram Web pages under web.telegram.org.
- Stores preferences locally in Firefox.

The extension does not collect, transmit, sell, rent, or share personal data.