Image to Audio — Turn a Picture into Sound, Online Free
Paint a picture or a line of text into a WAV. A spectrogram shows it back.
Or drop an image
PNG, JPG, WebP, and more
PNG, JPG or WebP. It is resized to fit the spectrum.
Processed locally — your file never leaves this tab
Type a short line or drop an image. This page writes that shape into the frequencies of a WAV, the same trick as a picture hidden in a song. It is not a song and it is not speech. Open the WAV in the spectrogram generator to see it. Nothing is uploaded.
What people make with it
- Hide a spectrogram message — a name or one line only a spectrogram shows.
- Turn a simple logo or drawing into spectrogram art.
- Make a file you can drop straight into the spectrogram generator.
How to use the Image to Audio
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Type or drop
Type up to 32 characters, or drop a PNG, JPG or WebP. The preview is the picture that will be written, bright pixels as louder frequencies.
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Download the WAV
You get a 44.1 kHz 16-bit WAV. It sounds like chirps and noise, not like the picture spoken aloud.
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Look at the spectrum
Open the WAV in the spectrogram generator. Log frequency, ceiling around −20 dB. The shape sits between about 400 Hz and 12 kHz.
A picture written into frequencies
Type up to 32 characters, or drop a PNG, JPG, or WebP. The page writes that shape into the frequencies of a mono WAV at 44.1 kHz, 16-bit, a few seconds long. Bright pixels become louder frequencies.
It is not a song and it is not speech. You hear chirps and noise, not the words spoken aloud. A very detailed photo is shrunk so the file stays short.
How to see what you wrote
The shape is invisible on a normal waveform. Open the WAV in the spectrogram generator:
- Log frequency, ceiling around −20 dB.
- The drawing sits between about 400 Hz and 12 kHz.
- Keep the WAV. A low-bitrate MP3 can smear the shape.
Not a code, and not the spectrogram page
Anyone who opens a spectrogram of the WAV can see the picture. It is a drawing in the sound, not encryption.
The spectrogram generator draws a picture of audio you already have. This page builds audio so that picture shows your image or your line. The waveform generator only shows loudness, so the hidden shape will not be obvious there.
Image to Audio FAQ
Is my image uploaded?
No. The browser draws the text or the image and builds the WAV in this tab. There is no upload step. After the page loads you can go offline and it still works.
What file do I get?
A mono WAV at 44.1 kHz, 16-bit PCM, a few seconds long. It is not MP3. The picture lives in the frequencies, so converting it to a low-bitrate MP3 can smear the shape.
Will it sound like the picture or the words?
No. There is no speech synthesis and no music generator. You hear tones stacked where the pixels are bright. To read it, look at a spectrogram.
How is this different from the spectrogram generator?
The spectrogram generator draws a picture of audio you already have. This page does the reverse: it builds audio so that a spectrogram shows your picture or your line of text. The waveform generator only shows loudness, so the hidden shape will not be obvious there.
Does it work on a phone?
Yes. Type, pick a photo, download. It works in current Chrome, Edge, Firefox and Safari, on desktop and mobile. A very detailed photo is shrunk so the file stays short.
Is this a secret code?
No. Anyone who opens a spectrogram of the WAV can see the picture. It is a visible drawing in the sound, not encryption.
Related tools
Spectrogram Generator
See the frequencies in a song or a recording, then download the picture — drawn on your device.
Open Spectrogram Generator
Waveform Generator
A waveform picture of your audio — colors, size and a transparent PNG, drawn on your device.
Voice Recorder
Record your microphone, trim the take, save it as MP3 — nothing leaves your device.