YTMP3X for Windows is the desktop version of this site's converter, listed on the Microsoft Store as YTMP3X - Video Downloader & Converter. It does the same job the website does, except the download and the conversion happen on your own PC instead of on our servers. It is free and needs no account.
What the desktop app does differently
The website is free and needs nothing installed, so for a one-off download it is still the quickest option. The app is for people who download often and would rather it all happened on their own machine.
| Website | Windows app |
|---|
| Setup | Nothing to install | A free install from the Microsoft Store |
| Where the download runs | Our servers, shared with everyone using the site | Your own PC, over your own connection |
| While it runs | A progress bar in the page you started it from | A queue you can watch, with cancel and retry |
| Where files go | Your browser's Downloads folder | A folder you choose, opened straight from a finished job |
| What we see | The link you paste reaches our server | Nothing: the link you paste is never sent to us |
| Formats | The same: MP3 at 64 to 320kbps, MP4 up to 1080p, WAV, and trimming to just the part you need. |
To be straight about the limits: running downloads over your own connection avoids our shared queues, but it is not a magic bypass. YouTube can rate-limit or challenge any connection, including yours, and sites change things that break downloads from time to time. When a site stops working, the app tells you so rather than failing quietly.
Same output, same decisions
The app follows the same rules as the website, so a file from one matches a file from the other.
- H.264 video with AAC audio, so the MP4 plays on an iPhone, an older Android, a smart TV, and inside Premiere or CapCut without converting anything first.
- 1080p is the ceiling, and that is not an arbitrary cap. Above 1080p, YouTube only publishes AV1 and VP9, so a 4K download is necessarily a file many devices cannot play.
- MP3 files carry their tags: title, artist and date, plus a square cover image taken from the video's thumbnail, so they do not land in your library as untitled tracks.
- WAV exports at 16-bit, 48kHz stereo, the sample rate of YouTube's own audio, so nothing is resampled on the way out.
How the download engine gets onto your PC
The app uses two open-source programs, yt-dlp and FFmpeg, to download and convert media, and neither is bundled inside the Store package. The first time you run it, the app fetches both from their official GitHub release pages and checks each file against a fingerprint built into the app before it will use them. That is why the first run needs an internet connection and takes a little longer than the ones after it.
What it will not do
The app does not sign in to anything and does not read your browser cookies, so private videos, age-restricted videos and paid or members-only content stop with a plain message explaining why. Live streams have no finished file until the broadcast ends, and some videos are region-locked by the rights holder.
There is no bundled toolbar, no extra software and no account to create.
System requirements
- Windows 10 version 1809 (build 17763) or later, or Windows 11
- A 64-bit (x64) PC
- An internet connection on first run, so the app can fetch its download engine
- Free disk space for the engine and for whatever you download
Microsoft certifies the package before it is listed.
Downloading only what you are allowed to
The same rule applies as on the website. Download content you own, have permission to use, or that is public domain or Creative Commons licensed. YouTubeToMP3X is an independent educational project and is not affiliated with YouTube. Our guide to the legal position explains where the lines actually sit, and the Terms and DMCA policy apply to the desktop app exactly as they do to the site. The app has its own privacy policy, because it handles your data differently from the website.
