Session Vault for Firefox

Name: Session Vault for Firefox
Author: UncleVictor

Automatic local backups of your Firefox windows, tabs and tab groups. Bring a lost session back in a few clicks: tab order, groups and pinned tabs return. Keeps a safe copy when many tabs vanish at once. Nothing leaves your computer.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-11-08

Version:

0.1.3

Last updated: 2026-10-22

Features & Capabilities

Session Vault keeps copies of your workspace so that a crash, a wrong click or a failed session restore never costs you your tabs.

What it does

Daily (or weekly) backups, plus an autosave a minute after your tabs change.
Tab-drop guard: when many tabs disappear at once, the copy made before that is kept until you say everything is fine.
Each copy keeps windows, tab order, the active tab, pinned tabs, tab groups (name, colour, collapsed), titles and containers.
Restore into new windows, or replace the current session. Before a replace a safety copy is saved, and old windows close only after everything was restored.
Copies are verified with a checksum before older ones are removed. Smart retention: your newest copies, the best copy of every day and week, pinned copies, and a trash for 7 days.
Copies are also written as JSON files to your Downloads folder, so they survive a reinstall. Import them back, or import Firefox's own session files (sessionstore.jsonlz4, recovery.jsonlz4, previous.jsonlz4, upgrade.jsonlz4-*), optionally with recently closed windows, tabs and saved groups.
Search across all copies; click a saved tab to open it.

Privacy No network requests, no analytics, no cloud. Everything stays in your Firefox profile and your Downloads folder. Private windows are never saved.

Limits set by Firefox Closed and saved tab groups are not visible to extensions; split views and back/forward history cannot be restored; about:, file: and data: pages reopen as a placeholder page that shows the original address.

User Growth & Download Statistics

Add-on

By:

UncleVictor

Daily users:

Version:

0.1.3 Last updated: 2026-10-22

Version code:

6596133

Creation date:

2026-10-19

Firefox add-on GUID:

firefox-session-vault@victor21123

Firefox add-on numeric ID:

3101477

Firefox on Android:

Risk:

Permissions:

Size:

83.10KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-11-08

Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:: UncleVictor
Firefox Add-ons Store: https://addons.mozilla.org/firefox/addon/session-vault-for-firefox/

Is Session Vault for Firefox Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Session Vault for Firefox requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
Medium ****** ********** ** ******** ********** *** ********* ******* ******** ****** ******** ****** ********
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Session Vault for Firefox is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****