Upload your WAV file and PDF.to re-encodes it into a M4R container with sensible default bitrate and sample-rate. The M4R download is ready in seconds.
Is WAV to M4R a lossy or lossless conversion?
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If both WAV and M4R are lossless (WAV, FLAC, AIFF), no quality is lost. If M4R is lossy (MP3, AAC, OGG, Opus), audio is re-encoded; we default to a high bitrate (192-320 kbps) for near-transparent quality.
What bitrate does the M4R output use?
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192 kbps by default for M4R where applicable. Use the options panel to pick 96, 128, 192, 256, or 320 kbps depending on whether you want smaller files or higher fidelity.
Are tags (artist, title, album) preserved when converting WAV to M4R?
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Yes. ID3 / Vorbis / iTunes-style tags are mapped across formats. Album artwork is preserved when M4R supports it.
Will sample-rate and bit-depth survive the WAV to M4R conversion?
Does PDF.to support multi-channel (5.1, 7.1) WAV files?
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Yes for M4R formats that support multi-channel (AC3, FLAC, Opus). For stereo-only targets, multi-channel audio is downmixed using a perceptually weighted mix.
Can I batch-convert WAV files to M4R?
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Yes. Drop a whole folder of WAV files; each becomes a separate M4R and all are zipped for download.
Is the WAV to M4R converter free?
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Yes, within the free size limit. PRO unlocks much larger files, parallel jobs, and higher bitrates.
