# Tab Preview On Hover

> Adds on-hover tab preview to Firefox (requires CSS theme).

Canonical page: [https://chrome-stats.com/d/tab-preview-on-hover](https://chrome-stats.com/d/tab-preview-on-hover)

## Overview

- **ID:** `tab-preview-on-hover`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Eason & Yue
- **Category:** appearance,tabs
- **Daily users:** 81
- **Weekly downloads:** 4
- **Rating:** 4.88 / 5 (8 ratings)
- **Version:** 1.1
- **Last updated:** 2023-08-28
- **First published:** 2023-04-11
- **Size:** 29 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/tab-preview-on-hover/)
- **Website:** [https://github.com/easonwong-de/Tab-Preview-On-Hover/issues](https://github.com/easonwong-de/Tab-Preview-On-Hover/issues)

## Description

**Tab Preview On Hover** is a Firefox add-on paired with a custom CSS theme that provides on-hover tab previews to enhance your browsing experience. When you hover over a tab, a preview of its content will appear after a customizable delay, helping you quickly glance through tabs without switching to them.

The add-on requires installing a supporting CSS theme in your Firefox profile folder and enabling stylesheet customizations via `about:config`. Note that it supports previews for the first ten tabs and disables background images on the navbar for optimal display. Users can adjust preview timing by modifying CSS variables like `--preview-delay` and `--preview-delay-tolerance`.

Ideal for users seeking efficient tab management, this extension improves navigation in Firefox, though it may not be compatible with certain Firefox built-in themes. Detailed installation steps and technical notes are provided for easy setup.

## Rankings

- #12,880 — Overall
- #68 — hover
- #139 — preview

## Permissions and access

### Permissions

- `tabs`
- `theme`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/tab-preview-on-hover)