What is LUFS Matrix?
LUFS Matrix helps you check how your audio sounds across different platforms. Different platforms like Spotify, YouTube, and Apple Music adjust the volume of your audio to match their standards. This tool lets you hear what your audio will sound like on each platform, so you can make sure it sounds great everywhere.
Whether you’re producing music, creating videos, editing podcasts, or streaming content, you can use this app to test and compare your audio against platform standards — all in one place.
Important to Know
This is a reference tool. The loudness targets shown here are based on publicly available information about how platforms typically handle audio. We don’t have official partnerships with any platform, and these are guidelines to help you, not hard requirements. Always check each platform’s official guidelines before final delivery.
How to Get Started
Just open the app and you’re ready to go. No setup needed.
Understanding the App Layout
Buttons at the Top
- Theme button: Switch between dark and light mode (your choice is saved).
- Loudness Match toggle: Turn loudness matching on or off while playing.
Status Area
- Shows what the app is doing, like when it’s analyzing your audio or which track is playing.
Track Slots (A, B, C, D)
- Four slots where you can load up to 4 audio files.
- Each slot shows:
- A Browse button to pick a file
- The filename once loaded
- The loudness level once analysis is done
- You can also drag files directly into a slot.
Platform Targets
- Spotify, Apple, Instagram, YouTube, Amazon, Deezer — these show the loudness standards for each platform.
- Quietest Loaded Track — a reference based on whichever of your loaded tracks is quietest (available once you load 2+ tracks).
- Click any platform to select it and see how much your audio needs to change to match it.
Playback Controls
- Play, Pause, Stop buttons to control playback.
- A slider to jump to different parts of your track.
- Shows the track name and current playback position.
Quick Start
- Load a file: Click Browse or drag a file into a slot.
- Wait: The app analyzes it in a few seconds.
- Pick a platform: Click Spotify, YouTube, Apple, etc.
- Listen: Click any match cell to hear your audio adjusted for that platform.
- Compare: Toggle between original and adjusted to hear the difference.
Common Questions
How do I load audio?
Click the Browse button in a slot or drag a file directly into it. Works with any common audio or video format.
What does the loudness number mean?
Every audio file has a loudness level. Some are louder, some quieter. The loudness level shown is how the file compares to a standard measure. Different platforms target different levels.
Can I hear both versions?
Yes. Use the Loudness Match toggle to quickly switch between the original and the platform-adjusted version.
Can I compare my tracks to each other?
Yes. Load different files into slots A, B, C, and D, then click different boxes in the same platform row to hear how they each sound at the same loudness level.
What’s “Quietest Loaded Track”?
It uses whichever of your loaded files is the quietest as the reference. Try it if you want to see how all your files sound at the same level as your quietest track. (Load at least 2 tracks to make this available.)
Why does my audio not get louder?
The app only turns volume down when needed — it never makes things louder. This protects your audio from distortion.
Will this work on my platform?
These loudness targets are guidelines based on public information. Always check with the platform you’re uploading to for their current requirements before final delivery.
Troubleshooting
A file won’t load
Try a different file format or make sure the file isn’t corrupted. If it still doesn’t work, check that your browser allows audio playback.
Nothing plays
Make sure you’ve loaded a file and it finished analyzing (you should see the loudness level). Try clicking Play again.
Tips
- Drag and drop makes loading files faster than using Browse.
- Click Platform names to select them, then click the matrix cells to audition.
- Use the slider to jump around your track without waiting for it to play through.
- Compare the same time position across different tracks by switching between them with Play active — the position stays the same.