Make Your Audiogram
Choose an MP3 or WAV file and a cover image, select a clip of up to 60 seconds, then download the MP4.
Turn a podcast clip into a video with your cover art, a title and a waveform that moves with the voice, right in your browser, no upload, no watermark, no sign up
Choose an MP3 or WAV file and a cover image, select a clip of up to 60 seconds, then download the MP4.
100% Private, your audio never leaves your browser. The tool works locally on your device using WebAssembly. Nothing is uploaded to our servers.
This tool draws each frame on a canvas and encodes the video with the video encoder that is built into your browser (WebCodecs). Then FFmpeg, the industry‑standard media toolkit compiled to WebAssembly, cuts the audio clip and puts the sound and the picture in one MP4. The waveform comes from the sound of your clip, so it moves with the voice. No account, no watermark, no server queue.
The first time you create an audiogram, the tool downloads the media engine (~30MB) to your browser and caches it, so later audiograms start instantly. On our test laptop, a 30‑second square clip was ready in 3 seconds. Browsers with no built‑in H.264 encoder use FFmpeg for the video too, which took about 25 seconds for the same clip.
Want to make audiogram clips for every episode automatically? The Bannerbear API automates it for you. Plug it into your app or no‑code workflow, give it one episode file, and get waveform clips with illustrated art, captions and show notes.
An audiogram is a short video of a podcast clip. It shows a still image, a waveform that moves with the voice, and a title.
Social feeds play video, not audio files. An audiogram puts a moment from your episode into a video, so you can post it like any other clip. This tool makes the video from four parts:
Note: this audiogram is a podcast video. It is not the chart from a hearing test, which has the same name.
You can make an audiogram in a few minutes. You do not need to install software or make an account.
To add captions, open the MP4 in the free subtitle tool. It can write the captions for you with AI, in your browser.
Choose the size for the place where you post the clip.
| Size | Pixels | Use it for |
|---|---|---|
| Square (1:1) | 1080 x 1080 | Feed posts |
| Portrait (4:5) | 1080 x 1350 | Feed posts that fill more of a phone screen |
| Vertical (9:16) | 1080 x 1920 | Reels, Stories, Shorts and TikTok |
The common questions about making a podcast audiogram, and their answers
No. The tool runs in your browser, and your files stay on your device. We do not see them, and we do not keep a copy.
Yes. The tool is free, with no watermark, no signup and no limit on the number of clips.
From 1 to 60 seconds. Most social apps show short clips best. The audio file itself can be a full episode, up to 2 hours on a computer.
Yes. For each frame, the tool measures the sound at that moment of the clip. Loud speech makes tall bars, and a pause makes flat bars.
The first time, your browser downloads the media engine (~30MB) and keeps it. After that, a 30-second square clip took 3 seconds on our test laptop (Apple M5, Chrome). A browser with no built-in H.264 video encoder uses FFmpeg for the video, and the same clip took about 25 seconds. Older computers take longer.
Yes. Download the MP4, then open it in the free subtitle tool. It writes the captions with AI in your browser, and you can edit them before you burn them in.
MP3 and WAV audio, and PNG, JPG or WEBP images. To use an M4A, FLAC or OGG file, change it to MP3 with the media converter first.
No. A hearing test audiogram is a chart of hearing levels. This tool makes a podcast audiogram, which is a short video with a waveform.
Do you publish a new episode every week? A Bannerbear workflow makes the clips for each episode from one audio file.
This free tool makes one clip at a time, and you choose the moment. The Turn an Audio Podcast into Illustrated Audiogram Clips workflow takes one episode file and gives you AI-chosen waveform clips with illustrated art and captions, and show notes.
See what Bannerbear does for shows like yours on the Bannerbear for Podcasts page. Other free tools for podcasters:
Trim, resize, caption and combine your videos right in your browser, no upload and no watermark
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