v0.3.3

On addons.mozilla.org: https://addons.mozilla.org/firefox/addon/3035144/ — this is the same AMO-signed build; updates come from AMO.

The session list opens instantly on large profiles, plus quality-of-life fixes.

Speed

• The session list now appears in a fraction of a second even with thousands of sessions (it could sit blank for several seconds before). Search is ready almost immediately.
• The first time you open the list after this update, TS-G may show "Optimizing your sessions…" for a few seconds while it prepares. This happens once.

Improvements

• Add several tags at once: separate them with commas, e.g. "work, research, reading". Undo removes them all in one step.
• The undo/redo buttons show how many steps are available as a small badge, and in their tooltip.
• Changing the date format or the open-button setting updates an open session list straight away.

Fixes

• Backups: if a session's backup file couldn't be saved, it was silently skipped from then on. It's now retried on the next backup.

sha256: be76446d2753f98e86a0d8e9807a802be2ebb3be1a12fa760d9cbbaea89692b2

v0.3.2

On addons.mozilla.org: https://addons.mozilla.org/firefox/addon/3035144/ — this is the same AMO-signed build; updates come from AMO.

Faster, and fixes for backups and restore.

Speed

• The popup opens dramatically faster on large profiles: the session list and search now read a small index instead of decoding every saved session (every tab and favicon) each time.
• Auto-save does much less work in the background after every tab change.
• Large sessions scroll smoothly in the detail pane.

Fixes

• Backups: with backups on, the "all sessions" mode wrote a full, uncompressed copy of every session every 30 minutes. It's back to once per browser session, and the compressed Complete backup is skipped when nothing has changed.
• Opening a session in a new window did nothing when the Firefox homepage was saved without "https://". New windows now open on a blank page first.
• Backups still going to the old "TabSessionManager - Backup" folder now use "Tab_Session_Garrison_Backup" (only if you never changed it). Existing backup files stay where they are.

Polish

• The undo/redo arrows match the other header icons.
• The placeholder page for not-yet-loaded tabs uses the green theme.

Note: this update upgrades the internal session database. Your sessions are kept; going back to 0.3.0 afterwards isn't supported.

(0.3.1 was signed on the wrong channel by mistake and never shipped; 0.3.2 is that release.)

sha256: fde55982e1906723038c33c43e72798270c5ffd16e25d17f14d2b927ebd3dd43

v0.3.0

Now on addons.mozilla.org: https://addons.mozilla.org/firefox/addon/3035144/

This is the AMO-signed build of the first listed release (reviewed and approved by Mozilla on 2026-08-09). Installing this .xpi gives you the same add-on as the store — updates come from AMO automatically.

• Cloud sync removed entirely — the extension collects and transmits nothing
• Help pages now hosted on the project site instead of upstream's wiki
• Distribution moved from the self-signed channel to the public AMO listing; pre-0.3.0 installs upgrade in place and keep their data

sha256: 486d89bc3caf192798ae32b38f53f87d26b99de3587c443462f51675831389cd

v0.2.1

Fixes tab-group restore and makes tab-group names searchable.

Fixed

• Tab groups restore with their names, colours and collapsed state again. Restoring a session recreated its groups but stripped them back to Firefox's defaults — unnamed, default colour, expanded. The restore path passed a Chrome-style callback to browser.tabs.group, which is promise-based on Firefox, so the code that reapplied each group's title/colour/collapsed state never ran. (Matches upstream #1631 and #1583.)
• A single tab that fails to open no longer takes its whole group down with it. The failed tab was still counted as a group member, which made the grouping call throw and lose every tab in that group. It now restores with the tabs that did open.

Added

• Search matches tab-group names. Typing a group's name surfaces every session containing it. The group chips were already shown in both panes, but the search index never included them — only tab titles.

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Installed copies update automatically within ~24 h, or force it via about:addons → ⚙ → Check for Updates.

v0.2.0

Green UI redesign across popup + options, dark theme by default, branded header, pill buttons, and the non-functional cloud-sync section removed.

v0.1.2

New logo. Near-instant bulk delete (batched undo history). Restore respects 'Save tab groups' off (sienori#1635). Faster large-profile list rendering.

v0.1.1

Perf: faster list render (Map + Sets, content-visibility). Fix: no unwanted tab groups on restore when 'Save tab groups' is off (sienori#1635).