How to Use the Open A P K YouTube Thumbnail Downloader
This guide shows you exactly how to use openapk.site to grab YouTube thumbnails in HD or 4K with just a few clicks.
Step 1 – Copy the YouTube Video Link or ID
Go to YouTube and open the video whose thumbnail you want. Copy the URL from your browser’s address bar, or tap “Share → Copy link” in the YouTube app. You can also copy only the 11-character video ID if you prefer.
Step 2 – Paste Into Open A P K
Visit https://openapk.site. At the top of the page you’ll see an input box that says “Paste YouTube URL or ID”. Click or tap inside, and paste the URL or ID that you copied.
Step 3 – Click “Get Thumbnails”
Hit the Get Thumbnails button. The tool will detect the video ID, generate different thumbnail URLs, and show every available image size in a preview grid.
Step 4 – Preview and Download
Each thumbnail will have two buttons:
- Open – opens the image in a new tab for full-size preview.
- Download – saves the thumbnail file to your device.
Filenames include both the video ID and the size label, such as
VIDEOID-maxresdefault.jpg, making organization easier if you download many images.
Supported Thumbnail Sizes
- maxresdefault.jpg – highest available resolution, ideal for HD/4K.
- sddefault.jpg – standard definition.
- hqdefault.jpg – common “high quality” size.
- mqdefault.jpg – medium quality.
- default.jpg – small preview image.
What If maxresdefault Doesn’t Work?
Sometimes creators do not upload a dedicated high-resolution thumbnail. In that case YouTube may only provide
hqdefault or sddefault. If maxres shows a “Not Available” placeholder in Open A P K,
simply choose one of the other sizes – they will still look sharp for many use cases.
Safe and Private Usage
Open A P K runs entirely in your browser. Links are processed with JavaScript only; your video URLs are not stored on a server. Thumbnails are loaded directly from YouTube’s CDN, just as they would be when you browse YouTube normally.
Use Cases
- Previewing how your own thumbnail looks in different resolutions.
- Studying thumbnails from successful channels for design inspiration.
- Using thumbnails in internal presentations or reports.
Ready to try it? Go back to the Open A P K homepage and paste any public YouTube link to see the thumbnails instantly.