Audio Waveform
Generate a waveform image from an audio file. Podcasts, music posts and video thumbnails routinely use one, and it is also the quickest way to see whether a recording is clipping or nearly silent. It is free, needs no account, and adds no watermark to your result.
Audio Waveform
Add your files. Recommended settings are ready, so you can process in one click.
PDF, Word, images, audio, video, archives and more
Up to 100 files · 250 MB · No account- 1Add files
- 2Choose an action
- 3Download or keep going
What people use it for.
What happens to your file.
The recording is decoded and, for each column of the picture, the lowest and highest level in that slice of time are drawn, so the shape is accurate at any length. The loudest moment is scaled to the edge of the picture, so a quiet voice memo is still readable, and stereo can be drawn as separate left and right lanes. Choose the size (1200x300 by default), the waveform colour, and a background colour or transparency, and download a PNG, an SVG that stays sharp at any size for print, or the peaks as JSON for a web player such as wavesurfer.js.
Everything you need, without a paywall.
Common questions.
What does a flat waveform mean?
Silence. The loudest moment is scaled to the edge of the picture, so even a quiet recording is drawn full height; a flat line means there is no sound in that stretch.
What does a solid block mean?
The signal is at or near maximum for long stretches, which usually indicates clipping or heavy compression.
Can I change the image size or colour?
Yes. Type the size as width x height, choose the waveform colour and a background colour, or leave the background transparent to place the picture over artwork.
Can I use it in a web player?
Choose JSON to get the peaks, the lowest and highest level in each column from -1 to 1, ready for wavesurfer.js and similar players. Choose SVG for a vector picture.
You might also need.
Normalize perceived loudness using FFmpeg loudnorm processing for more consistent playback volume.
Inspect codec, sample rate, channels, duration, bitrate, tags and stream metadata using ffprobe.
Raise or lower audio volume by a percentage and export a new MP3 or WAV file.
Reduce audio size by re-encoding to MP3 or AAC at a selected bitrate while preserving normal playback compatibility.