An audio visualizer that runs in your browser.
Afterglow listens to your song, finds the bass, mids, highs and every beat, and turns them into moving visuals you can export as an MP4 with the audio. There is nothing to install and no watermark, and your music never leaves your computer.
Free
2 videos a day without an account, unlimited with a free one.
No watermark
Your video, your name on it, nobody else's.
Nothing uploaded
Songs are analysed and rendered on your device.
How it works
How to make a music visualizer video
- 01
Load a song
Drop an MP3, WAV, M4A, FLAC or OGG file, or a video's soundtrack. Afterglow reads the title, artist and cover art from the file's tags. No song handy? Play the demo.
- 02
Pick a look
Choose one of five styles and eight palettes. Tune the shape and how hard it reacts to the beat, add a title card or your cover art, or press Shuffle.
- 03
Export the MP4
Pick 16:9 or 9:16, 720p or 1080p, 30 or 60 fps, and the part of the song you want. The video renders on your computer, usually faster than the clip plays.
What you can make
Visualizer videos for every platform
YouTube videos
A 16:9 visualizer for a single, a full album track or a mix, with a title card and cover art. Up to 1080p at 60 fps.
Shorts, Reels and TikTok
9:16 clips that keep the title clear of the buttons those apps put at the bottom. Grab 15, 30 or 60 seconds from the playhead.
Song teasers
Afterglow starts you on the loudest 15 seconds of the song, usually the chorus or the drop, snapped to a beat. Drag the handles to change it.
Live visuals
React to a microphone, a line-in or another browser tab in real time, then record what you see and hear. Handy for streams and practice sessions.
Styles
Five sound visualizer styles
Each style reacts to the same analysis of your song, so beats land on the beat in the preview and in the exported video alike. All five work in landscape and vertical.
Halo
A radial audio spectrum that pulses with shockwaves on every beat. The classic visualizer look.
Ridgelines
The spectrum's recent history as ridges rolling into the distance, like a moving mountain range.
Nebula
Shader clouds that swirl and warp with the bass, mids and highs. Great behind cover art.
Particles
Thousands of glowing specks riding a flow field that the music bends and scatters.
Scope
A phosphor oscilloscope that draws the actual sound wave, for a retro sound wave visualizer.
Export specs
What you get
- File
- MP4 with H.264 video and AAC stereo audio (the song itself)
- Shapes
- 16:9 at 1280×720 or 1920×1080, 9:16 at 720×1280 or 1080×1920
- Frame rate
- 30 or 60 fps
- Length
- The whole track or any clip, with optional fade in and out. Songs up to 30 minutes and 600 MB
- File size
- About 60 MB per minute at 1080p and 30 fps, more at 60 fps or high bitrate
- Speed
- Renders offline with your browser's built-in encoder, usually faster than real time
- Browsers
- Tested in desktop Chrome and Edge. Where offline encoding isn't available, it records the clip in real time instead
- Allowance
- 2 free videos a day without an account, unlimited with a free account. Previewing is always unlimited
Privacy
Your music stays on your computer
Afterglow decodes, analyses and renders everything inside your browser, using its built-in audio and video tools. Your song is never uploaded, there is no watermark, and there is nothing to install. We count how many videos are saved so we can keep the tool free, never what's in them.
FAQ
Music visualizer questions
How do I make a music visualizer for free?
Open this page, drop in your song and pick one of the five styles. Tune the colors and shape if you like, then open Export, choose 16:9 or 9:16 and press Render video. You get an MP4 with your song's audio, and it costs nothing.
Is there a free music visualizer without a watermark?
Yes. Videos from this music visualizer never carry a watermark. You can save 2 videos a day without an account, or sign in with a free account for unlimited videos.
What is the best free music visualizer?
It depends on what you need. For a video file you can post, look for a tool that exports a real MP4 with no watermark and doesn't make you upload your song. Afterglow does that, in 16:9 and 9:16, up to 1080p at 60 fps. For visuals during a live set or a stream, pick one that reacts to a microphone or another tab, which Afterglow also does.
What website can I use to visualize music?
You can use this page. It runs in a modern desktop browser with nothing to install: load a song and the visuals react to it right away. Chrome and Edge also get the fastest video export.
How can I create my own audio visualizer?
Start from one of the five styles, then make it yours: pick a palette, change the shape settings, set how strongly it reacts to the beat, and add your title and cover art. Press Shuffle to try random combinations. Your settings are saved in your browser for next time.
How can I visualize audio waveforms?
Pick the Scope style. It draws the actual waveform of your audio like an oscilloscope, in sync with playback. Halo and Ridgelines show the frequency spectrum instead, and the timeline under the preview shows the waveform of the whole song.
Does Spotify have a built-in visualizer?
No. Spotify's apps don't include a music visualizer. Some songs show Canvas, a 3 to 8 second looping video the artist uploads, but it doesn't react to the music. Afterglow can react live to the Spotify web player: open it in another tab, choose Source, then Browser tab audio in Chrome or Edge, and tick the option to share tab audio.
Is my music uploaded anywhere?
No. Your song is decoded, analysed and rendered inside your browser, and the finished video is built there too. We only count how many videos are saved, never what's in them.
Can I post the videos on YouTube and TikTok?
The visuals are yours to use. The music is a separate question: only post songs you own or have the rights to, since YouTube, TikTok and Instagram check audio for copyright.
Keep going
Related tools and guides
Need a song first?
Make an original track with the AI Song Generator, download it, then bring it back here for the video.
Full AI music videos
How beat-synced and lip-synced music videos are made with OpenArt, for when a visualizer isn't enough.
Lyric videos in 15 minutes
A fast workflow for lyric videos, the other big format for songs on YouTube.
More free tools on the tools page.