Can I use the generated waveform image for commercial purposes?

Yes. The waveform images generated by this tool are completely free and can be used for both commercial and non-commercial purposes, such as video editing, podcast backgrounds, and social media materials.

Are the selected audio files saved on a server?

No. File loading and waveform generation are processed entirely within your browser locally. No files are ever uploaded to any external servers, so you can safely use even confidential audio data.

Can it process long audio files over tens of minutes?

Yes, it can. It uses the browser's Web Audio API for fast decoding, though it may take a few seconds to load depending on the file size and length.

What audio formats are supported?

It supports standard audio formats supported by your browser (e.g., MP3, WAV, FLAC, AAC, OGG, M4A).

Can I save a PNG image with a transparent background?

Yes. By adjusting the transparency (alpha channel) of the background color using the color picker or specifying a transparent color, you can save it as a PNG with a transparent background.

🔊

audio waveform,

Audio Waveform Generator

Generate high-quality waveform images from audio files.
Perfect for podcasts, video editing, and social media.

🔒️

In-Browser

Audio never leaves your device

⚡️

High Quality

Custom resolution output

Select Audio File

🎵

Select or drag & drop your audio file

MP3, WAV, OGG, M4A, FLAC

about,

About

A tool that automatically generates visual waveform images (Waveform/Audio Spectrum) from audio files such as music, voice, narration, etc. (MP3, WAV, AAC, FLAC, etc.).

You can choose from three styles: "Bars," "Line," and "Mirror" to suit your design taste, and the colors of the waveform and background can also be freely customized. Very useful as a background image for audio content distribution on YouTube etc.

Since analysis and drawing are performed on the browser using the Web Audio API, even large audio files of several tens of minutes can be converted into images in an instant, and the files are not loaded to the server.

how to,

How to Use

STEP 1

Select audio file

Load audio files such as MP3 and WAV formats by dragging and dropping. The analysis is finished in an instant.

STEP 2

Adjust design

Change the waveform display style (Bars/Line/Mirror) and choose the waveform color and background color according to your preference.

STEP 3

Save as PNG

When you press the "Save" button, it will be saved as a high-quality PNG image with a transparent background.

glossary,

Glossary

Waveform: A visual representation of sound amplitude over time. The horizontal axis represents time and the vertical axis represents amplitude.
Sine Wave: The most fundamental waveform containing only a single frequency (pure tone). It produces a smooth, round sound without any harmonics.
Square Wave: A waveform composed of the fundamental frequency and odd harmonics only. It produces the distinctive "8-bit" or "chiptune" sound.
Sawtooth Wave: A waveform containing all integer harmonics. Known for its bright, buzzy tone, it is widely used as a basis for synthesizer lead and pad sounds.
Triangle Wave: A soft waveform similar to a sine wave but containing odd harmonics at reduced amplitudes. It produces a mellow, flute-like tone.
Web Audio API: A JavaScript API for advanced audio processing in the browser. It enables creating oscillators, effects chains, and audio analysis nodes.
Frequency (Hz): The number of wave cycles per second, measured in Hertz. Human hearing ranges from about 20 Hz to 20,000 Hz. 440 Hz corresponds to the note A4.

faq,

FAQ

Q.Can I use the generated waveform image for commercial purposes?: Yes. The waveform images generated by this tool are completely free and can be used for both commercial and non-commercial purposes, such as video editing, podcast backgrounds, and social media materials.
Q.Are the selected audio files saved on a server?: No. File loading and waveform generation are processed entirely within your browser locally. No files are ever uploaded to any external servers, so you can safely use even confidential audio data.
Q.Can it process long audio files over tens of minutes?: Yes, it can. It uses the browser's Web Audio API for fast decoding, though it may take a few seconds to load depending on the file size and length.
Q.What audio formats are supported?: It supports standard audio formats supported by your browser (e.g., MP3, WAV, FLAC, AAC, OGG, M4A).
Q.Can I save a PNG image with a transparent background?: Yes. By adjusting the transparency (alpha channel) of the background color using the color picker or specifying a transparent color, you can save it as a PNG with a transparent background.

use cases,

Use Cases

🎙️

Podcast promotional video (Audiogram)

This tool generates waveform images from radio and podcast sound sources, and overlays them on video editing software to create announcement videos for social media.

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