# Web Overlay

> Press L to instantly overlay any website on your current page. Set your URL from the toolbar icon. Lキーを押すだけで任意のウェブサイトを全画面オーバーレイ表示。ツールバーのアイコンからURLを設定できます。

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

## Overview

- **ID:** `web-overlay`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** はるまき
- **Category:** tabs
- **Daily users:** 3
- **Weekly downloads:** 2
- **Version:** 1.5
- **Last updated:** 2026-05-07
- **First published:** 2026-05-04
- **Size:** 9.67 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/web-overlay/)

## Description

Web Overlay lets you instantly display any website as a fullscreen overlay on top of your current page.
<ul><li>Press L to show the overlay</li><li>Press L again or click ✕ to close</li><li>Set your preferred URL from the toolbar icon</li><li>Works on any website</li></ul>
Useful for quickly checking a calculator, notes, or any reference site without leaving your current page.

Web Overlayは、Lキーを押すだけで任意のウェブサイトを全画面オーバーレイ表示できる拡張機能です。もう一度Lを押すか✕ボタンで閉じられます。ツールバーのアイコンからURLを自由に設定できます。

## Rankings

- #54,937 — Overall
- #49 — overlay

## Permissions and access

### Permissions

- `storage`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High 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/web-overlay)