Audio Test Kit
Free online tools to test and tune your audio.
Check stereo, loudness, clipping, and audio quality before you upload — directly in your browser.
Pre-Upload Audio Checks
Run every pre-upload check against a platform target in one drop. The fastest way to know if a file is ready to publish.
Audio Analyzers
Single-metric, file-in tools. Pick one when you only need a focused answer.
Stereo Checker
Check if an audio or video file is mono, dual-mono, or stereo.
Bitrate Checker
Inspect audio bitrate, codec, sample rate, and quality.
Clipping Checker
Find clipped samples and timestamps in your audio file.
LUFS Meter
Check loudness against YouTube, Spotify, and podcast targets.
Dynamic Range Checker
Detect over-compressed, fatiguing audio.
Noise Floor Checker
Measure background noise and detect mains hum in your recording.
Why use Audio Test Kit
Browser-only
Files and microphone input stay on your device. We never upload your data.
No installs
Open a tool, use it, close the tab. No account, no plugins, no downloads.
Honest results
Browser audio is not a calibrated lab. We use estimate language and explain limits.