Web Overlay Firefox

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。

Features & Capabilities

Web Overlay lets you instantly display any website as a fullscreen overlay on top of your current page.

  • Press L to show the overlay
  • Press L again or click ✕ to close
  • Set your preferred URL from the toolbar icon
  • Works on any website
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。

User Growth & Download Statistics

Manifest V2 Add-on
By:
はるまき
Daily users:
1
Version:
1.5 Last updated: 2026-05-07
Version code:
6246618
Creation date:
2026-05-04
Risk:
Moderate risk impact High risk likelihood
Permissions:
Content scripts matches:
  • <all_urls>
Size:
9.67KB
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-08-01
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:
はるまき
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/web-overlay/

Is Web Overlay 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.

Web Overlay requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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.

Web Overlay 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 has low user count. Unpopular extensions may not be stable or safe.
  • Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
  • Medium **** ********* *** ***** ** *** **** * ******* *** ********** *** *** ** ****** ** *****
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Best Web Overlay Alternatives

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