Make a video louder
Boost the volume of any video permanently — the fixed file plays loud everywhere, not just on your machine.
Free · No signup · Files never leave your device
Drag and drop a quiet video or audio file
or click to browse
Adjustment
Applies a fixed gain — simple and predictable
Other volume fixes
How it works
Drop your file
It stays on your device — nothing is uploaded.
Adjusted locally
The volume is measured and adjusted right in your browser via WebAssembly.
Download the result
Compare before and after, then download for free — no watermark.
Fix the file, not the playback
Turning up the volume knob only helps on your own device — everyone you send the video to gets the same quiet audio, and phone speakers that are already maxed out have nothing left to give. Boosting the file itself raises the actual recorded signal, so the video plays loud on every device, in every app, with no instructions needed.
Drop the video in, pick a boost amount (+6 dB is a good start), and download the fixed file. The picture is untouched — only the audio track is amplified — so there is no quality loss and no long re-encode wait.
Frequently asked questions
+6 dB roughly doubles perceived effort and is a safe start; +10 dB is a big, obvious jump. If the loudest parts start to crackle, the boost is clipping — switch to Normalize mode instead, which raises quiet audio while keeping peaks under control.
No. Only the audio track is adjusted and re-encoded — the video stream is copied bit-for-bit, so the picture stays identical and processing is fast even for long files.
Cameras and screen recorders deliberately record with headroom to avoid distortion, and a far-away microphone loses several decibels more. The file itself carries that low level everywhere you share it — boosting once at the source fixes it for every viewer.
Yes. The volume booster is completely free, with no signup, watermarks, or limits. We make money from our video translation service, not from this tool.
No. The volume adjustment happens locally in your browser using WebAssembly. Your file never leaves your device — you can even disconnect from the internet once the page has loaded.