Merging Audio Files Online

Defyaudio makes merging audio files straightforward — whether you are merging two audio files or joining an entire playlist into one track. Upload your clips, set the order, and download the result instantly. Everything runs in your browser, so your files stay completely private.

Merging Audio Files Online — Step by Step

Merging audio online with Defyaudio takes less than a minute. Here is how it works.

  1. 1

    Open the merging tool

    Go to the Defyaudio homepage and select the Audio Joiner from the toolbar.

  2. 2

    Upload your files

    Add the tracks you want to merge — drag and drop or click to browse. Merging audio files in MP3, WAV, FLAC, OGG, M4A and AAC is fully supported.

  3. 3

    Set the sequence

    Drag your clips into the playback order you want. Whether merging two audio files or more, the final track follows this exact sequence.

  4. 4

    Choose transitions

    Add a crossfade for smooth blending when merging audio online, or insert silence gaps to separate sections naturally.

  5. 5

    Merge and download

    Click Merge. Your files are processed locally in your browser and the merged track downloads immediately.

Merging MP3 Files Online and Other Formats

From merging two audio files to joining dozens of clips, Defyaudio handles any combination of formats in a single session.

Unlimited clips

Merging audio files of any number — from merging two audio files to an entire album of tracks with no cap.

Crossfade blending

Smooth transitions when merging audio online — set a crossfade duration between any two clips.

Silence gaps

Insert pauses of any length between tracks when merging MP3 files online or any other format.

Cross-format merging

Merge MP3, WAV, FLAC, OGG, M4A and AAC freely — combine different formats and export to one.

Why Choose Defyaudio for Merging Audio Files?

Most merging tools upload your audio to a remote server. Defyaudio processes everything locally — your files never leave your device.

100% private — merging happens entirely in your browser
Free tier with no watermarks on merged output
Merging audio files online in seconds
Merging two audio files or hundreds — no limits
Works on any modern browser and operating system
High-quality output with no re-encoding artifacts

Ready to Start Merging Audio Files?

Free and 100% private. Start in seconds.