buncha.tools
buncha/video & audio/audio-normalize

Audio Loudness Normalizer

Loudness measurement and gain run in your browser. Nothing uploads.

Pairs well with

AI Mastering
Auto-master a track by spectral matching it to a g…
Audio Joiner
Combine multiple MP3 / WAV / M4A files into a sing…
Audio Speed Changer
Speed up or slow down any audio file from 0.5× to …
Chord & Key Transposer
Transpose guitar/piano chord charts to any key wit…

About Audio Loudness Normalizer

Bring any audio file to a streaming-ready loudness — Spotify (-14 LUFS), Podcast (-16), Broadcast (-23), or Audiobook (-19). Measures current LUFS, applies the right gain, caps at -1 dBTP so it never clips.

Everything happens on your device. Close the tab and it's gone.
b
Built browser-first. Run by one developer.
Every tool runs on your device. No tracking pixels, no sign-up to start. The numbers below are pulled live from the registry.
386
Free tools
Across 14 categories
7
Visual editors
PDF · image · video · audio
34
Curated kits
By profession + lifestyle
27
AI tools
Powered by Claude API
Files never uploadNo tracking pixelsNo sign-up neededWorks in any modern browser
The handful of AI tools (paraphrase, summarise, blog, captions, etc.) send your prompt text to Anthropic's Claude API to do the work. Files, images, PDFs and video never leave your device. Pick the tools that fit your privacy comfort.