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Audio-reactive music visualizer · in your browser

Make your music move.

Upload a track, pick a visual and export a video that reacts to every kick, bass line and vocal. For YouTube, Suno songs, Reels and VJ sets. The free export has no watermark.

Start free See how it works

Free · no watermark · 16:9, 9:16 and 1:1 · rendered with WebGPU

A looping recording of the real KosmoViz Studio: a visual is picked from the library and plays to the demo track, one of its settings is turned while it plays, and the free MP4 export is chosen, shown in the Modern dark, Modern light and Classic themes.
  • YouTube visualizers
  • Suno & AI songs
  • Reels · TikTok · Shorts
  • VJ clips
  • Spotify Canvas
  • Lyric intros

How it works

Track in. Video out.

Six steps, all in the browser. Nothing to install.

LIVE PREVIEW = FINAL VIDEO

  1. Upload your track

    Drop in an MP3. Nothing to install: KosmoViz runs in your browser.

  2. Let it listen

    KosmoViz analyses the track once, so every visual knows its beats and energy.

  3. Pick a visual

    Start from the library. Every visual reacts to the analysed audio, not to a simple volume meter.

  4. Make it yours

    Change colours, text and effects while the music plays, and see each change at once.

  5. See the final video

    The live preview is the final video. Rendering runs on your own graphics card, so what you see is what you export.

  6. Export and post

    Export an MP4 in 16:9, 9:16 or 1:1, ready for YouTube, Reels, TikTok and Shorts.

Use cases

One studio, four stages.

16:9

For YouTube

A visualizer video for every release.

Upload your MP3, pick a visual and watch it react to every kick, bass line and vocal. Export a 16:9 MP4 that is ready for YouTube.

  • No watermark on the free export. Your channel, your branding.
  • Real GPU rendering. The preview is the final video.

More on YouTube visualizers

1:1

For Suno & AI music

You made the song in minutes. The video too.

Drop your Suno export into KosmoViz, choose a visual that moves with the track and export for YouTube, Shorts or Reels.

  • Made for faceless channels. Audio-reactive visuals instead of a still cover.
  • One song, three formats. The same project exports in 16:9, 9:16 and 1:1.

More on visualizers for AI music

9:16

For Reels · TikTok · Shorts

Made to be held upright.

Short videos are where new listeners find music. Turn your track into a 9:16 video that moves with the beat, then export the same project square or widescreen.

  • Spotify Canvas ready. Even the free vertical export is 1080 × 1920 px.
  • Audio-reactive, not stock footage. The visual follows your song from start to end.

More on vertical videos

MP4 · H.264

For VJ sets

Clips that move to your beat.

Stock VJ loops move to someone else’s music. Render visuals that react to the tracks you actually play and load the MP4 into Resolume, VDMX or any VJ software.

  • Export with or without audio in 16:9, 9:16 or 1:1.
  • Clips, not a live output. You play them in your own software.

More on VJ clips

Made in KosmoViz · real renders

Why KosmoViz

Built for music, not for slideshows.

No watermark

The free export carries no logo. Your release, your branding.

WebGPU

Visuals render on your graphics card in the browser. Older browsers fall back to WebGL2.

3 formats

16:9, 9:16 and 1:1 from the same project. No rebuilding per platform.

0 installs

Runs in a current browser. Your projects are saved to your account.

Pricing · Free plan

Start without paying.

Make and export videos in your browser for free. The alpha takes no money.

Start freeSee pricing
Export
Up to 1080p MP4, 30 fps
Formats
16:9 · 9:16 · 1:1
Watermark
None

Pro · Premium

After the alpha. Not on sale yet, and nobody is charged; features and prices are announced when they open.

FAQ

Questions

Is it really free?

Yes. The free export goes up to 1080p at 30 fps and has no watermark. Only 60 fps is a paid export.

Do I need to install anything?

No. KosmoViz runs in a current browser with WebGPU; older browsers fall back to WebGL2.

Can I use AI-generated music from Suno or Udio?

Yes, any MP3 you are allowed to use. Whether you may publish a Suno song depends on your Suno plan and its terms.

Can I make a Spotify Canvas?

Yes. Spotify asks for 9:16 videos at least 720 px tall; the free vertical export is 1080 × 1920 px. Keep the clip between 3 and 8 seconds.

Can I run KosmoViz live on a projector?

Not yet. Today you export clips and play them in your VJ software.

Which formats can I export?

MP4 in 16:9 for YouTube, 9:16 for Shorts, Reels and TikTok, and 1:1.

Your next release, visible.

Start freeHow it works