Podcast Level Checker
Upload your WAV or MP3 to analyze loudness levels, check platform compatibility, and download a normalized mono MP3 — entirely in your browser.
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Analysis
Integrated Loudness
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True Peak
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Duration
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Channels
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Sample Rate
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Platform Compatibility
Target Loudness
Output Settings
Channels
Bitrate
Sample Rate
Episode Metadata
— optional, embedded in the MP3
Add art
JPEG or PNG — minimum 1400×1400 px (3000×3000 ideal for Spotify & Apple). Embedded as APIC cover art.
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Platform Standards Reference
| Platform | Target LUFS | True Peak Max | Channels | Notes |
|---|---|---|---|---|
| Spotify | −14 LUFS | −1 dBTP | Mono / Stereo | Normalizes on playback; files above −14 are turned down |
| Apple Podcasts | −16 LUFS | −1 dBTP | Mono recommended | Smart Speed may alter perceived dynamics |
| YouTube | −14 LUFS | −1 dBTP | Mono / Stereo | Normalizes to −14 LUFS; no boost applied to quiet uploads |
| General Podcast | −16 LUFS | −1 dBTP | Mono / Stereo | Industry best practice; passes all platforms with headroom |
Recommended: −16 LUFS integrated loudness with a true peak of −1 dBTP is the safest universal target — it meets or exceeds all three platforms while leaving headroom. Mono output halves file size and avoids stereo imaging issues in earbuds and car speakers.
About platform normalization: Spotify and YouTube normalize loudness on playback. Uploading too hot (above −14 LUFS) gets automatically turned down. Uploading too quiet may trigger a boost, raising your noise floor. Normalizing before upload ensures your episode sounds exactly as intended.