Free online audio visualizer and music video maker
Drop in an MP3 or WAV, pick a style and an aspect ratio, and export an MP4 you can post straight to YouTube, Instagram, or TikTok. There is no signup, no watermark, and no upload — your file is decoded and rendered entirely in your own browser.
Three visual styles
Bars gives you the classic spectrum analyser, split into 32 logarithmically spaced frequency bands so bass detail does not collapse into a single column. Radial arranges those same bands into a ring, which suits square and vertical formats. Ribbon draws the raw waveform as a filled shape — the look most people mean when they say "audiogram".
Your audio never leaves the device
Most online visualizers upload your file to a render farm and email you a link. This one does not. Decoding, analysis, frame rendering, and H.264 encoding all happen locally using the browser’s built-in WebCodecs engine. Nothing is transmitted, so there is no queue, no account, and no copy of your track sitting on someone else’s server.
How long a file can it handle?
Rendering happens in memory, and the memory required grows with the length of the audio — roughly 35 MB per minute, held from the moment decoding starts until the export finishes. Short clips are safe just about anywhere. Long ones depend on the machine: a thirty-minute episode exported in under three minutes during testing, but that was on a fast desktop with a great deal of memory free, and it is a best case rather than a promise. On a phone, or a laptop with plenty else open, a long file may fail. The tool tells you the estimate before you start.