Two-file workflow
Join an intro and recording, or consecutive interview clips.
VoysumPrivate browser tool
Audio Merger
Select two recordings, place the second after the first, and download one combined MP3.
No uploadNo accountFree to use
✓ Runs locally in your browser
↥Choose or drop a fileaudio/*, .mp3, .wav, .m4a, .webm · up to 500 MB
🔒 Your media file is never uploaded to Voysum.
Private by default
Useful conversion without giving up your file.
Format handling
Inputs can use different supported audio formats.
Browser-only merge
Neither source file is uploaded.
Common questions
Audio Merger FAQ
How local browser processing works and what to expect.
Can the two files have different formats?
Yes. Both inputs are decoded before being joined and encoded as MP3.
Does the second file start immediately?
Yes. It is placed directly after the first file without an inserted gap.
Keep working
Related free tools
Free browser tool
Audio Cutter
Trim audio locally in your browser and download only the section you need.
Open tool →Free browser toolAudio Compressor
Compress audio to a smaller MP3 locally in your browser.
Open tool →Free browser toolAudio Volume Normalizer
Normalize perceived audio loudness locally in your browser.
Open tool →Turn this recording into searchable text.
Download the result, then upload it to Voysum for an editable transcript plus TXT, SRT, VTT, and CSV exports.
Continue to audio transcription