Leveler — volume leveler and speed for any video

Evens out loudness in movies: quiet dialogue gets louder, explosions get softer. Playback speed for any HTML5 video.

Tired of turning the volume up for every whisper and down for every explosion? Leveler evens out the sound of any HTML5 video or audio right in your browser, so you can watch a movie at night without reaching for the volume. • Presets: Night mode (strong compression), Louder dialogue, Headphones, Bass+, Off • One "Level the sound" slider, or full control: threshold, ratio, knee, attack, release, makeup gain • 3-band equalizer and low cut to make voices clearer • Level meter before and after compression • Save your own presets, rename and delete them • Preset and speed are remembered for each site • Playback speed 0.25–4× without the chipmunk effect, hotkeys [ ] \ (you can change them) • Works on YouTube, Twitch, Vimeo, news sites and other players, inside iframes and in fullscreen • Smooth on/off without reloading the page • Backup and restore of all settings as a JSON file • Light and dark theme, English, Русский, Українська Streaming services with DRM protection (Netflix, Disney+, Prime Video and similar) do not let extensions process their sound. Leveler detects this, leaves the sound untouched and shows a clear message. Speed control still works there. Privacy: everything is processed on your device. No data is collected, nothing is sent anywhere, no analytics. Free and open source: https://github.com/vkardin/leveler