Combine multiple audio files into one continuous track. Supports crossfade between songs and automatic volume normalization. Perfect for making mixtapes, podcasts, and audiobooks. Everything runs locally in your browser — nothing is uploaded.
Normalize loudness across multiple audio files to broadcast-standard LUFS levels (–16 LUFS for podcasts, –14 LUFS for streaming). Podcast networks use this to unify episode volume. Everything runs locally in your browser — nothing is uploaded.
Convert an entire folder of audio files between MP3, WAV, OGG, FLAC, and M4A formats in one batch with consistent quality and bitrate settings. Everything runs locally in your browser — nothing is uploaded.
Reduce background noise from audio recordings. Choose from mild to extreme reduction or sample a noise profile for precision cleaning. Perfect for podcasts, calls, and field recordings.
Combine multiple PDF pages onto a single sheet with N-up layout. Choose 2-up, 4-up, 6-up, 9-up, or booklet mode. Perfect for printing multiple slides or pages on one sheet.
Turn photos and scanned images into a professional PDF document. Upload multiple images, reorder, and combine into a single PDF. Everything runs locally in your browser — nothing is uploaded.
There is no limit. Add as many files as you need — the merger concatenates them in the order you arrange. Each file is processed sequentially from your browser.
Crossfade blends the end of one track into the beginning of the next, creating a smooth transition instead of an abrupt cut. You can set the crossfade duration in seconds.
The volume normalization option adjusts each input to a consistent level before merging. Without it, files recorded at different volumes will sound uneven in the output.
Yes. The tool accepts mixed formats — for example, you can merge an MP3 with a WAV and an OGG. All files are converted to a common format before joining.
The merged output defaults to MP3 for broad compatibility. You can also choose WAV, FLAC, or OGG depending on your quality and file size preferences.
Audio Cutter
Trim and cut audio files online — MP3, WAV, M4A, FLAC, and OGG. Select start and end points visually on the waveform, then download the trimmed clip.
Fade In/Out
Apply smooth volume fades to your audio tracks. Supports fade in, fade out, or both with linear, logarithmic, exponential, and S-curve transitions. Perfect for podcast intros and outros.