OutMonkeyFree · No sign-up · Private

Video, GIF & Audio

Change an audio file’s volume.

Turn a clip down, boost it carefully, or set a precise percentage without uploading the recording.

Use percentages instead of guessing

100% keeps the existing level. Lower values reduce the waveform. Higher values amplify it, but a loud source can clip when boosted too far.

Good for

Quiet voice notes, overly loud effects, clips that need to sit under narration, and quick level fixes before a larger edit.

Listen before publishing

A numerical boost is not the same as mastering or loudness normalisation. Check for distortion and compare the result at a normal listening level.

Useful to know

Do the job. Know what to check.

Short, practical guidance for this specific kind of task, without turning a tiny job into a tutorial marathon.

What this tool does

Change audio volume

Make audio quieter or louder with percentage controls and quick level presets.

The tool is designed to get that one job done without making you learn a full piece of software first.

Best results

Play the exported file before you share it.

Watch the beginning and end, then jump through the middle. Make sure picture, sound, timing, crop and orientation survived.

Open the result once as the recipient will see it. That quick check catches many small mistakes.

In plain English

What matters most.

For a one-off video job, the useful test is whether the exported file plays properly where you intend to use it.

For one-off jobs, a focused tool is usually faster than opening a full video editor.

Next little job

You might also need.

Video & GIFVolume normaliser

Even out audio loudness.

Try this tool →Video & GIFFade audio in / out

Choose exactly when each fade starts and ends, plus the level it starts from and lands on.

Try this tool →Video & GIFConvert video

Change video container or codec.

Try this tool →
Private by design.How OutMonkey handles your files →Browse all 163 tools →

File size & formats

Large videos need more patience.

What can I use?

Choose a video format your browser can open. Browser-based video exports use WebM where the tool needs to re-encode a clip.

Is there a size limit?

There is no extra OutMonkey file-size cap in these browser tools. Your device memory and browser are the practical limit, so very large or long videos can be slow or fail.

If the file is huge

Shorter clips and ordinary phone-sized videos are the safest fit. Keep this tab open while a video is processing.