YouTube Thumbnail Downloader 作者: Ryan Aby

Adds a clean hover button on YouTube thumbnails to view, download, or copy the full-resolution image (maxresdefault.jpg). Works on channel pages, search, and video pages.

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必須使用 Firefox 才能使用此擴充套件

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YouTube Thumbnail Downloader is a simple extension that lets you grab the full-resolution thumbnail of any YouTube video—effortlessly.

Just hover over a video thumbnail and a small button will appear. You can choose to:

View the high-res image in a new tab

Download it directly as a JPG

Or copy the image itself to your clipboard (not just the URL)

It works on the homepage, search results, channel pages, and even inside the video player.

There’s no clutter, no tracking, and no background scripts running. It’s just a clean, helpful tool for creators, designers, or anyone who wants a better look at YouTube thumbnails.

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1.1.0 版的發行公告

Improved UI feedback: download/copy buttons give visual cues when clicked
Fixed issue where buttons sometimes pointed to the wrong thumbnail on channel tabs (like "Popular")
Refactored code for better stability and cleaner logic
Updated manifest and permissions for Manifest V3 compatibility

Let us know if you have feature ideas or run into bugs!

YouTube Thumbnail Downloader 作者: Ryan Aby

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