Your files stay on your Mac.
Converting Ogg Vorbis to AIFF decodes the compressed audio stream and writes full PCM samples into an AIFF container — the format Logic Pro, GarageBand, and most professional DAWs expect as uncompressed input. Convertessa performs the entire decode on your Mac. No upload, no account, no internet connection required.
Drag one .ogg file or an entire folder into Convertessa. All files are processed locally — nothing leaves your Mac.
Choose AIFF from the output format list. Convertessa will decode each Ogg Vorbis file to uncompressed PCM wrapped in an AIFF container.
Click Convert. Your AIFF files land in the output folder, ready for Logic Pro, GarageBand, or any editor that requires uncompressed audio.
Images, audio, video, documents, archives and eBooks — all converted natively, right on your Mac.
Pick a format you have — see everything Convertessa can turn it into.
Convert hundreds of files at once with per-type group defaults and individual overrides.
First-class support for HEIC, AVIF and WebP — encode and decode, both ways. Read JPEG XL and a dozen more modern formats too.
Drop files anywhere on the window. Native, instant, and exactly what you’d expect on a Mac.
Dial in compression, resolution and bitrate. Keep originals pristine or shrink for sharing.
Never overwrite a file by accident. Convertessa appends safe suffixes automatically.
Every job is logged locally. Re-run a previous conversion or revisit recent outputs in a click.
Bundle your converted files straight into a single ZIP, TAR or 7z — packaged and ready to share the moment a job finishes.
Right-click any file in Finder and choose Convert. A Quick Action handles it on the spot — no need to open the app first.
Shrink Convertessa to a tidy mini window that tucks into a corner — just a drop zone and a format picker for quick, one-off conversions.
No cloud. No account. No upload. Every conversion happens entirely on-device, using the power already in your Mac. What you convert is nobody’s business but yours.
Script conversions, wire them into your build, or batch a folder from the terminal. The same engine, no GUI required.
Read the full CLI documentation →Shrink Convertessa down to a small, focused window — drop, convert, done, with your recent conversions one click away.
macOS 14+ · Apple Silicon & Intel
New formats, new features, and fixes — every release, on the record.
No. AIFF is an uncompressed format, but the Ogg Vorbis source is already lossy — decoding it to AIFF preserves exactly what was in the .ogg file without adding or recovering any audio data.
No. Convertessa runs entirely offline on your Mac. Your .ogg files are read from disk, decoded locally, and written as AIFF files — nothing is transmitted over the network.
Yes. Drop a folder into Convertessa or pass a directory path with convertessa ./folder/ --to aiff to batch-convert every Ogg Vorbis file inside it.