2026-06-15•2 分鐘閱讀
如何線上下載 YouTube 縮圖
學習如何使用 PowerUtils 免費線上工具下載 YouTube 影片縮圖,支援高畫質、標準畫質和中等畫質。
youtubethumbnaildownloadmediatutorial
Why Download YouTube Thumbnails?
YouTube thumbnails are useful for:
Understanding YouTube Thumbnail Resolutions
| Resolution | Size | Use Case |
|------------|------|----------|
| maxresdefault | 1280×720 | Highest quality |
| sddefault | 640×480 | Standard quality |
| hqdefault | 480×360 | High quality |
| mqdefault | 320×180 | Medium quality |
| default | 120×90 | Low quality |
How to Use the Thumbnail Downloader
Step 1: Copy YouTube URL
Copy the video URL from YouTube (supports youtube.com and youtu.be links).
Step 2: Paste URL
Go to the YouTube Thumbnail Downloader and paste the URL.
Step 3: Get Thumbnails
The tool will automatically extract and display all available resolutions.
Step 4: Download
Click "Download" to open the image in a new tab, then right-click to save.
Supported URL Formats
https://www.youtube.com/watch?v=VIDEO_IDhttps://youtu.be/VIDEO_IDhttps://www.youtube.com/embed/VIDEO_IDhttps://www.youtube.com/shorts/VIDEO_ID