Audio Watermark
Mix a watermark clip into your track to protect preview audio
Audio Watermark loops a short watermark clip (a spoken tag or stamped sound) continuously under your main track at a volume you set, producing a single MP3 you can safely send as a preview before a sale or license is confirmed.
Main track
Watermark clip
0 = silent, 1 = full volume, relative to the main track
Choose your audio track above — processing starts automatically.
How to use Audio Watermark
- 1
Upload your main track and a short watermark clip.
- 2
Set the watermark volume relative to the main track (0–100%).
- 3
Click "Add Watermark" to mix and render the result.
- 4
Download the watermarked MP3 and use it for every preview or demo link.
Everything you need to know about audio watermarking
What does watermarking audio actually do?
This mixes a short audio clip — a spoken tag, a tone, a brand mention — into your main track at a set volume, so preview or demo versions of your audio carry an audible mark that discourages unauthorized use of the full-quality file.
When you actually need this
- Sharing preview tracks with clients before a purchase or licensing agreement is finalized.
- Protecting sample packs or stock audio from being used before it's actually licensed.
Getting the volume right
Set the watermark volume high enough to be clearly audible throughout the track (defeating its purpose if it's too quiet), but not so loud it makes the preview unpleasant to actually listen to — somewhere in the middle is the usual target.
Related Audio Tools
Frequently Asked Questions
What happens if the watermark clip is shorter than the main track?
It loops continuously for the full length of the main track, so the watermark is present throughout, not just once at the start.
What format is the output?
A single MP3 file, regardless of the input formats, so it's easy to share anywhere.
How loud should the watermark be?
Loud enough that the track is unusable without paying for the clean version, but not so loud it drowns out the music a buyer needs to evaluate. Test a few volume levels and listen on more than one device before settling on one.
Does this tool send my audio to a server?
Yes — your files are uploaded securely, processed to mix the watermark in, and deleted from our servers within 1 hour.
Is this tool free to use?
Yes — completely free, with no signup and no watermark on the tool itself.