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Say Goodbye to Buffering!

Finally! A video player designed for your convenience!


Many websites use video players designed for minimum functionality. It's much easier to slap a basic player on a website and call it a day. The result? Constant buffering and terrible UI. FastStream is here to fix that.


FastStream will replace the default video player on websites with a modern, sleek, and fast video player designed for your convenience. With download acceleration and full video pre-buffering, you won't see a video buffer again.


FastStream is a browser extension originally developed by Andrew as a side project in high school. Six years and many iterations later, FastStream is now available for everyone to use. No costs, no ads, no tracking.

Download Acceleration

Downloads video fragments in parallel. Up to 6x faster download speeds for videos, ensuring smooth playback with no interruptions. Can predownload whole video in the background while you watch. Save videos as MP4 files to your computer with a click.


Customizable keyboard shortcuts. Adjustable video brightness, hue, contrast, and more. Adjustable audio dynamics with built in audio booster, equalizer, compressor, and channel mixer. OpenSubtitles support with subtitle offset controls.


Works on most websites, including Youtube. Supports MP4, HLS, and DASH videos.
Does not support services using DRM, paid services such as Netflix, Hulu, and Amazon Prime.

Install FastStream

FastStream is available for both Chrome and Firefox in English, Spanish, and Japanese.