⚡ Compatible with WordPress & All Browsers
Convert Normal Videos to
Stunning 4K Quality
Upscale, enhance, and convert your footage instantly using FFmpeg. 100% Free, Secure, and runs entirely in your browser.
Drag & Drop or Click to Upload
Supports MP4, MKV, AVI, MOV, WEBM
Original Preview
filename.mp4
0.00 MB
Conversion Settings
Quality
Speed
Balanced
Quality
Initializing Core…
0%
Waiting for worker…
Conversion Failed
The browser process was terminated or the file format is unsupported.
Frequently Asked Questions
Is this tool really free?
Yes, ToolToast is completely free. We utilize your own browser’s processing power via WebAssembly, so we don’t have server costs.
How long does 4K conversion take?
It depends on your computer. 4K upscaling is CPU intensive. A 1-minute video might take 2-5 minutes on a modern laptop. Close other tabs for best speed.