# Overlay Clock

> Shows digital clock as overlay rectangle to Firefox browser window

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

## Overview

- **ID:** `overlay-clock`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Jan Zilka
- **Category:** photos-music-videos,social-communication
- **Daily users:** 4
- **Weekly downloads:** 1
- **Version:** 1.0
- **Last updated:** 2019-12-17
- **First published:** 2019-12-17
- **Size:** 14 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/overlay-clock/)

## Description

Overlay Clock is a Firefox add-on that adds a digital clock as an overlay to the browser window. It was created to support live events broadcast using BCM, allowing viewers to easily identify the time during the event for later reference.

## Rankings

- #48,771 — Overall
- #35 — overlay
- #95 — clock

## Permissions and access

### 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).

## Similar extensions and apps

- [Simple Clock Extension](https://chrome-stats.com/d/simple-clock-extension) — 2 users
- [Floating Clock](https://chrome-stats.com/d/floating-clock) — 12 users, 5.00 / 5
- [Clocky](https://chrome-stats.com/d/clocky) — 1 users, 5.00 / 5
- [Simple Clock](https://chrome-stats.com/d/simple-clock-at) — 2 users
- [Firefox Code Clock](https://chrome-stats.com/d/firefox-code-clock)
- [Toolbar Clock](https://chrome-stats.com/d/toolbar-clock-1) — 1 users
- [Digital Clock](https://chrome-stats.com/d/digitalclock) — 104 users, 4.40 / 5
- [Toolbar Clock](https://chrome-stats.com/d/toolbar-clock-atc) — 5 users
- [Water Clock](https://chrome-stats.com/d/waterclock) — 9 users, 1.00 / 5
- [Icon Clock](https://chrome-stats.com/d/icon-clock) — 105 users, 4.83 / 5
- [Wall Clock](https://chrome-stats.com/d/wall-clock) — 19 users, 4.50 / 5
- [Clock](https://chrome-stats.com/d/clock-time-date) — 556 users, 4.17 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/overlay-clock)