# Overlay WebM

> Displays WebM videos in the browser window

Canonical page: [https://chrome-stats.com/d/overlay-webm](https://chrome-stats.com/d/overlay-webm)

## Overview

- **ID:** `overlay-webm`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** alternate-squared
- **Category:** appearance,photos-music-videos
- **Daily users:** 6
- **Version:** 1.0
- **Last updated:** 2024-10-18
- **First published:** 2024-10-18
- **Size:** 40 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/overlay-webm/)

## Description

<strong>Post Installation</strong>

<ol><li>Go to "about:addons" page</li><li>Click on the "Overlay WebM" block</li><li>Click on the "Options" tab</li><li>Enter the list of video URLs in the text box, separated by commas. For example, "<a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/364881ffedac8af99ef74302e153a73a5421674f39879686c0462a423675dcf0/https%3A//shorturl.at/n0pDK%2Chttps%3A//shorturl.at/r4K3z" rel="nofollow">https://shorturl.at/n0pDK,https://shorturl.at/r4K3z</a>"</li><li>Configure the extension to your liking.</li><li>Click on the "Save" button</li></ol>

## Rankings

- #41,459 — Overall
- #34 — overlay

## Permissions and access

### Permissions

- `storage`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- 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/overlay-webm)