# Once Watch: Hide Seen YouTube Videos

> Hide YouTube videos you've already watched. Optionally hide Shorts.

Canonical page: [https://chrome-stats.com/d/once-watch](https://chrome-stats.com/d/once-watch)

## Overview

- **ID:** `once-watch`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** elanor.d
- **Category:** photos-music-videos,social-communication
- **Daily users:** 1
- **Weekly downloads:** 1
- **Rating:** 4.50 / 5 (2 ratings)
- **Version:** 1.1.0
- **Last updated:** 2026-06-24
- **First published:** 2026-06-17
- **Size:** 24 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/once-watch/)
- **Website:** [https://www.elanordigital.com](https://www.elanordigital.com/)

## Description

With a toggle, hide all the videos you've watched.

Storage is based in the plug in so it won't sync with your youtube watch history.

If you can get a list of videos you watched, you can import the history through .txt or .csv files 

Import button: click "Import" in the popup, pick a .txt or .csv file. Each line can be any of:

Full URL: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/98327f91d602d007154fca4a0fadc47d9087a6a703ce901cda926dca1d1cd0eb/https%3A//www.youtube.com/watch%3Fv=dQw4w9WgXcQ" rel="nofollow">https://www.youtube.com/watch?v=dQw4w9WgXcQ</a>
Short URL: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/a6f7d0cc5291460dd9e602e8353f07df4bbebd0a0ad6e3978b3fde077c5e5ac1/https%3A//youtu.be/dQw4w9WgXcQ" rel="nofollow">https://youtu.be/dQw4w9WgXcQ</a>
Shorts URL: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/4f9860da34b20cddf44b0d81976a8363e32dadfa119a2d1bfa4d148dfc159ab6/https%3A//www.youtube.com/shorts/VIDEO_ID" rel="nofollow">https://www.youtube.com/shorts/VIDEO_ID</a>
Bare 11-character video ID: dQw4w9WgXcQ

## Rankings

- #75,777 — Overall

## Permissions and access

### Permissions

- `storage`

### Host permissions

- `*://*.youtube.com/*`

### Content script matches

- `*.youtube.com`

## Safety

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

### Analysis details

- Request access to the following domains: youtube.com
- This extension website URL may be invalid

> 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

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