A free, private alternative to Kapwing’s audio visualizer

Keep your audio on your machine and still get captions, waveforms and vertical exports — without a watermark or a workspace plan.

Open BLOOB now Try Galaxy 3D

Who this is for

Social media managers
Podcast producers
Students

Privacy by architecture

BLOOB never uploads audio; the analysis, the transcription and the export all run in the browser.

The same jobs

Audiograms with progress bars, captions with three styles, vertical and square exports, batch rendering.

More reactive

Real onset detection for kicks, snares and hats instead of a loudness wobble.

How to do it

Open BLOOB — nothing to install, no account
Choose a song, or use your microphone or a browser tab
Pick a scene, a mood and a palette
Press Record (or Export MP4) and download your video

Questions people ask about kapwing audio visualizer alternative

Can I collaborate?

Share a preset link that restores your exact setup, or a .bloob file.

Is there a free plan limit?

There are no plans.

Formats?

MP4 and WebM out; MP3, WAV, FLAC, M4A, OGG in.

Can I trim?

Export the first 30/60 seconds or trim in your editor.

Free forever — help keep it that way. There is no paywall, no watermark and no ad. Support pays the hosting and the phone-remote relay servers and funds new scenes. ♥ Support BLOOB & Galaxy What it funds

Open BLOOB now Cloudflare mirror