YouTube Video Downloader:

1. YT1s

YT1s is online Youtube video downloader that lets users to quickly and safely download YouTube videos to MP3 or MP4 files in high quality for free of cost. It allows users to download YouTube videos in high quality such as 1080p, 2K and 4K. You can also convert YouTube videos to MP3 audio in 320kbps quickly. Users can unlimited download without installing desktop software.

Features:

• Simple and reliable interface

• Compatible in all device

• Supports high video quality options

• No desktop application required

• Quick and safe download 

How to Download YouTube Videos in HD Format Using YT1s?

1. Open YouTube and find the video you want to save.

2. Copy the video's URL from the browser or YouTube app.

3. Open the YT1s in your browser and paste the YouTube URL.

4. Select HD video quality or format.

5. Save the resulting file to your device.

2. SaveFrom

SaveFrom is an online Youtube downloader that quickly downloads YouTube videos and audio files at no cost. It's compatible with major devices. You can choose the high quality formats and unlimited files download. The browser-based approach can be convenient because users do not necessarily need to install additional software. However, supported platforms, formats, resolutions, and availability can change over time. 

Features:

• Web-based YouTube video downloader

• Simple and fast conversion

• Easily download Youtube to MP4 files in 4K

• Multiple quality options provides

• Works through all web browser

How to Download YouTube Videos in HD Format Using SaveFrom?

1. Go to YouTube and copy the video's URL.

2. Visit the SaveFrom website.

3. Paste the YouTube link into the URL field.

4. Choose the formats and HD quality.

5. Select the download button and save the file to your device.

3. Cobalt

Cobalt is a web-based youtube converter that offers a quick way to convert and download YouTube videos into multiple formats including MP3 or MP4. Users can download Youtube videos on their devices without paying any fees or requiring any sign up. There is no need to install any applications or any software. Cobalt compatible with all popular devices including Smartphones, PC and Tablets. 

Features:

• Clean and simple interface

• No limits to convert Youtube to MP3 audio files

• Supports high quality including 4K

• Simple and fast steps for conversion

How to Download YouTube Videos in HD Format Using Cobalt?

1. Open YouTube and copy the video link.

2. Open Cobalt in your web browser.

3. Paste the YouTube URL into the input box.

4. Select an HD quality option and format.

5. Start the download and save the file to your device.