Download Online Videos
Up to 8K on Mac.
Free to start. Upgrade to Pro for up to 8K quality, playlists, subtitles, and automatic updates.
One-time payment · No subscription · macOS 14+ · Instant download
Trusted by Mac Users Worldwide
Engineered for Performance.
Built from the ground up to utilize every core of your Apple Silicon for unprecedented download speeds.
Multi-threaded Core
Splits files into multiple logical parts and downloads them concurrently, maximizing your bandwidth.
8K Pro Engine
Native support for the highest bitrate streams — flawless 4K, 8K, and 60fps playback guaranteed.
Native macOS
Follows Apple Human Interface Guidelines. Integrates perfectly with Finder, QuickLook, and the Dock.
Instant Start
Paste a URL and the download begins in under a second. No sign-in, no accounts, no friction.
Private by Design
Zero telemetry. Zero analytics. Everything runs locally — nothing ever leaves your Mac.
Auto-updating Engine
yt-dlp updates silently in the background. Pro users also get automatic app updates via Sparkle.
Everything you need.
Nothing you don't.
Start free. Unlock the full power with a one-time purchase.
4Kly Free
- Up to 720p HD quality
- Single video downloads
- MP4 and MP3 output
- Download history
- Open source · MIT license
- 4K / 8K resolution
- Playlist downloads
- Subtitle extraction (.srt)
- Browser cookies support
- Automatic app updates
4Kly Pro
- Up to 8K Ultra HD quality
- 4K and 8K resolution unlocked
- Playlist & channel downloads
- Subtitle extraction (.srt, .vtt)
- Browser cookies (Chrome, Firefox, Brave)
- 3 concurrent downloads
- Automatic app updates (Sparkle)
- MP4 and MP3 output
- Download history
- Priority support
Secure checkout via Dodo Payments · Instant email delivery
See it in action
Clean native macOS design. No Electron, no web wrappers.
Real-time progress with speed, ETA, and thumbnail