Your files stay on your Mac.
WavPack stores audio losslessly, producing large files designed for archiving. Converting to MP3 applies psychoacoustic compression so the same recording plays on any device or player that accepts MP3. Convertessa decodes the WavPack container locally and encodes to MP3 without sending audio anywhere.
Drag .wv files — or an entire folder — onto Convertessa. Batch mode queues every file at once so you can convert a whole album in one pass.
Choose MP3 from the output list, then set the quality level that controls the trade-off between file size and fidelity.
Click Convert. Convertessa decodes each WavPack file and writes the MP3 result alongside the original. Nothing is uploaded — processing happens entirely on your Mac.
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.
Yes. MP3 is a lossy format — some audio data is discarded during encoding. Use the quality setting to control the trade-off: higher quality retains more detail at the cost of larger files.
Yes. Drop the folder onto Convertessa or pass the folder path on the command line: convertessa ./album/ --to mp3. Every .wv file in the folder is queued and converted in one pass.
No. Convertessa writes the MP3 files alongside the originals and leaves your .wv files untouched.