Free Online YouTube Downloader
YT1s is a free online tool for downloading and converting YouTube videos to formats you can keep and use offline, including MP3, MP4, and 3GP. You don't need to install any software or create an account - paste the YouTube video link into the search box above, choose the format and quality you want, and the download starts right away.
The tool works directly in your web browser, so it runs the same on a desktop computer, a laptop, an Android phone, or an iPhone. Once a video is converted, you can watch or listen to it anytime, even without an internet connection - useful for saving music, tutorials, lectures, or any other YouTube content you want to keep on your device.
YT1s supports MP3 downloads at 64kbps, 128kbps, 192kbps, 256kbps, and 320kbps, so you can pick a smaller file size for casual listening or a higher bitrate for better audio quality. On the video side, downloads are available in resolutions up to 4K, along with formats like WEBM, M4A, WMA, and FLV. There's no limit on how many videos you can convert, and the service stays free for all users.
Features of YT1s YouTube Downloader

Fast Conversion
YT1s processes videos on our servers, so conversion takes only a few seconds even for longer videos. Paste the link, select a format, and your file is ready almost immediately.

No Download Limits
There is no restriction on how many videos or audio files you can convert. Use it as often as you like without hitting a daily cap.

Safe to Use
YT1s doesn't require you to install a browser extension or desktop application. Files are generated fresh for each request and aren't shared with third parties.

Works on All Devices
The tool is fully browser-based, so it works on Windows, macOS, Linux, Android, and iOS without needing a separate app for mobile.

Save to Cloud Storage
Converted files can be uploaded directly to Google Drive or Dropbox instead of saving locally - useful if you're converting from a phone with limited storage.

Multiple Format Options
In addition to MP3 and MP4, YT1s converts YouTube videos to 3GP, WMA, M4A, FLV, WEBM, and OGG.
Supported Formats
- MP4

- MP3

- 3GP

- M4A

- WEBM

YT1s converts YouTube videos to MP4, MP3, WEBM, 3GP, M4A, WMA, and FLV, with video quality ranging from standard definition up to 4K.
Convert NowHow to Download a YouTube Video in 3 Steps
- 1
Copy the URL of the YouTube video from your browser's address bar or the YouTube app, then paste it into the search box above.
- 2
Choose MP3 if you only want the audio, or MP4 if you want the video, then pick the bitrate or resolution you prefer.
- 3
Click the download button. The converted file will be ready within a few seconds and saved to your device's default downloads location.
FAQs - YT1s YouTube Downloader
What is YT1s?
YT1s is a free online YouTube downloader that converts YouTube videos into MP3 or MP4 files you can save to your device. It works through your browser and does not require any software installation.
Is YT1s free to use?
Yes, YT1s is completely free. There are no hidden charges, subscription plans, or limits on the number of files you can convert.
Do I need to create an account to use YT1s?
No account or registration is required. You can start converting videos as soon as you open the page.
Is it legal to download YouTube videos with YT1s?
YT1s is a conversion tool, similar to other recording software. You're responsible for how you use the files it produces - downloading content you don't have rights to and sharing it further can violate copyright law, so only save videos you're permitted to keep.
What video and audio formats does YT1s support?
MP4 and MP3 are the main formats, along with 3GP, WEBM, M4A, WMA, FLV, and OGG. MP3 downloads are available from 64kbps up to 320kbps.
What is the highest video quality available?
YT1s can convert videos up to 4K resolution, depending on what quality is available for that specific video on YouTube.
Can I use YT1s on my phone?
Yes. It works in any mobile browser on Android and iOS, so there's no separate app to install.
How long does a conversion take?
Most conversions finish within a few seconds to a couple of minutes, depending on the length of the video and your internet connection.
Where are my downloaded files saved?
Files go to your browser's default download location, usually a Downloads folder on your device, unless you've changed that setting.
Can I download an entire YouTube playlist at once?
YT1s converts one video at a time. To save several videos from a playlist, paste the link for each video separately.
Does YT1s store my files or personal information?
No. YT1s doesn't ask for personal information to use the service, and converted files aren't kept on our servers after you download them.
Which browsers work with YT1s?
All major browsers work, including Chrome, Firefox, Safari, Edge, and Opera, on both desktop and mobile.