#064 · Browser Audio Tool

Podcast Loudness Checker

Measure integrated-style loudness, true sample peak, and dynamic range for a podcast episode locally.

Choose podcast audio

Analysis only
No audio selected
Choose an audio file to begin.
Audio is processed locally in your browser and is not uploaded.
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How to use Podcast Loudness Checker

  1. Choose a compatible audio file.
  2. Set the available options for your task.
  3. Select Check loudness and wait for the local operation to finish.
  4. Review the measurements or compare the preview, then download the audio or report.

What this audio tool does

Measure integrated-style loudness, true sample peak, and dynamic range for a podcast episode locally.

The checker scans 400 ms blocks, excludes blocks below the chosen silence gate, combines channel energy, and reports an EBU-style loudness estimate plus sample peak and short-term spread.

This browser calculation is a practical estimate, not a certified broadcast meter. True-peak oversampling and full EBU R128 relative gating are outside this lightweight checker.

Supported formats and limits

Audio decoding follows the formats supported by your browser. WAV export uses 16-bit PCM. No file is uploaded.

InputBrowser-decodable audio
OutputPCM WAV or JSON analysis report
ProcessingLocal in this browser

Example and practical tips

For example, use Podcast Loudness Checker on a short copy first, listen or inspect the result, and only then process a long recording.

  • Close other audio-heavy tabs for smoother processing.
  • Keep an untouched copy of the source.
  • This browser calculation is a practical estimate, not a certified broadcast meter. True-peak oversampling and full EBU R128 relative gating are outside this lightweight checker.

Frequently asked questions

Does the podcast loudness checker upload my audio?

No. Audio processing and analysis happen in your browser, so the selected file is not sent to a server.

Which browsers work with this Podcast Loudness Checker?

A current browser with Web Audio API support works best. Input codec support still depends on the browser.

Can I preview the result before downloading?

Yes. When the tool creates audio, the original and result players let you compare them before saving.

Why is the exported file a WAV?

PCM WAV is widely supported and can be encoded reliably in the browser without an external server or codec.

Will this tool reduce audio quality?

This browser calculation is a practical estimate, not a certified broadcast meter. True-peak oversampling and full EBU R128 relative gating are outside this lightweight checker.

Processing details

ToolPodcast Loudness Checker
CategoryPodcast & Speech
PrivacyLocal browser processing

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