Upload your AAC file and PDF.to re-encodes it into a AIFF container with sensible default bitrate and sample-rate. The AIFF download is ready in seconds.
Is AAC to AIFF a lossy or lossless conversion?
+
If both AAC and AIFF are lossless (WAV, FLAC, AIFF), no quality is lost. If AIFF 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 AIFF output use?
+
192 kbps by default for AIFF 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 AAC to AIFF?
+
Yes. ID3 / Vorbis / iTunes-style tags are mapped across formats. Album artwork is preserved when AIFF supports it.
Will sample-rate and bit-depth survive the AAC to AIFF conversion?
Does PDF.to support multi-channel (5.1, 7.1) AAC files?
+
Yes for AIFF 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 AAC files to AIFF?
+
Yes. Drop a whole folder of AAC files; each becomes a separate AIFF and all are zipped for download.
Is the AAC to AIFF converter free?
+
Yes, within the free size limit. PRO unlocks much larger files, parallel jobs, and higher bitrates.
