Collapse All for Gmail

Adds an always-available Collapse all control to Gmail conversations.

Collapse All for Gmail™ adds a one-click Collapse all button to Gmail conversation views. The control remains available while you scroll, making it easier to manage long email threads without collapsing each expanded message manually. Features: • Collapse currently expanded messages with one click • Stays available while scrolling through a conversation • Appears only in conversation views—not in the inbox or message lists • Supports Gmail’s in-page navigation and browser Back and Forward • Accessible keyboard focus, tooltip, and disabled state • Lightweight Manifest V3 extension with no external dependencies The extension uses Gmail’s native Collapse all command when it can identify it safely. Otherwise, it collapses only message cards that are confidently identified as expanded. If Gmail’s interface is ambiguous, the extension does nothing rather than risk activating an unrelated control. Privacy: Processing occurs locally in your browser. The extension runs only on mail.google.com and inspects limited structural UI state needed to identify conversations and expanded or collapsed messages. It does not collect, store, or transmit email bodies, subjects, sender or recipient information, email addresses, attachments, or other Gmail content. It has no analytics, tracking, advertising, accounts, external backend, or remotely hosted code. Collapse All for Gmail is free. Gmail is a trademark of Google LLC. Use of this trademark is subject to Google Permissions. This extension is independently developed by Inverlux LLC and is not affiliated with or endorsed by Google.