Free · in your browser · no upload

4K music visualizer

Most online visualizers charge for 1080p. PulSound renders on your own graphics card, so 1440p and 4K cost nothing — and big files never have to be uploaded anywhere.

Open in the studio No sign-up needed

How it works

  1. 1

    Drop in your track

    MP3, WAV, FLAC or M4A. The file never leaves your computer — nothing is uploaded.

  2. 2

    Pick a look

    Choose from 80+ reactive templates, set colours, cover art, text and effects. You see the result live.

  3. 3

    Export the video

    MP4 up to 4K, rendered faster than real time — for YouTube, Shorts, TikTok, Reels or Instagram.

What you get

  • 3840×2160 MP4

    H.264 with AAC audio, ready for YouTube's 4K encoding.

  • Straight to disk

    Very large exports are written directly to a file you choose, not held in memory.

  • GPU templates

    Shaders render at full resolution — no blurry upscaling.

  • Cancel anytime

    Change your mind mid-export without losing anything.

Questions

How long does a 4K export take?

Depends on your computer: on a recent laptop a 3-minute track in 4K usually takes a few minutes. 1080p is much faster.

Is it really free?

Yes. Make and download as many videos as you like, up to 4K. A small PulSound mark appears for a few seconds at the start and end of the video.

Which browser should I use?

A current Chrome, Edge or Safari on a computer gives the fastest export (usually faster than real time). Firefox and phones work too, at real-time speed.

Do you upload my track?

No. Your audio, images and the finished video never leave your computer — everything is rendered in your browser. There is nothing to install either.

Make yours now — it takes a couple of minutes

Open in the studio