PrevYou — YouTube Thumbnail Previewer

By: Val

Preview your video thumbnail and title on YouTube home page or subscription feed.

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Features & Capabilities

PrevYou — YouTube Thumbnail Previewer is a handy Chrome extension designed for YouTubers to easily preview their upcoming video thumbnails and titles directly on the YouTube homepage or subscription feed. Instead of manually screenshotting and editing through external software, users can upload their thumbnail and title within the extension to instantly see how it stands among other videos.

Key features include random thumbnail placement to test effectiveness, a dark mode for user comfort, no login or credential requirements, and memory of your last input for convenience. This open-source tool was developed live by Benjamin Code and designed by BastiUI with contributions from a growing community. PrevYou aims to empower creators to optimize their video presentation and boost engagement effortlessly.

User Growth & Download Statistics

Add-on Open Source Content Social Media

By:

Val

Daily users:

87 -2

Rating:

2.67

(3)

Version:

1.5 Last updated: 2023-06-03

Version code:

5575548

Creation date:

2021-09-01

Risk:

Permissions:

Size:

71.51KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-17

Compare stats and ranking:

Ranking

# 12,011 ▼ 169

Other rankings

#37 in preview keyword 16 #83 in review keyword 18 #87 in subscriptions keyword 24 #101 in subscription keyword 29 ▼ 1#235 in contribute keyword 8 ▲

Other platforms

PrevYou — YouTube Thumbnail Previewer (v1.8)

6,000 4.62

(50)

For Developers

Monetize with App Pass Boost with Extension Booster

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:

Val

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/prevyou/

Permission Change History

2023-06-03: Version 1.3 → 1.5

Add Permissions: scripting

User Reviews

Marchait très bien jusqu'à la semaine dernière, mais depuis peu cliquer sur le bouton "preview" ne fonctionne plus sur firefox.

by St*****, 2025-07-07

by 远离*****, 2025-04-17

by 退出*****, 2025-03-12

View all user reviews ›

Is PrevYou — YouTube Thumbnail Previewer 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.

PrevYou — YouTube Thumbnail Previewer does not require any sensitive permissions.

Risk impact analysis details

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.

PrevYou — YouTube Thumbnail Previewer is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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