Your files stay on your Mac.
Convertessa reads your WMA files and re-encodes the audio as Ogg Vorbis (.ogg) entirely on your Mac — nothing is uploaded. You control the output quality before converting. The result plays natively on Linux, Android, and any player with Ogg Vorbis support.
Drag one WMA file or an entire folder onto Convertessa. All files are processed locally — they never leave your Mac.
Choose Ogg Vorbis from the output list, then set the quality level to balance file size against audio fidelity.
Click Convert. Convertessa encodes each file and saves the .ogg result alongside the original. Batch jobs run in parallel.
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.
Both WMA and Ogg Vorbis are lossy formats, so transcoding always involves some generation loss. Set a higher quality level in Convertessa to minimise the difference — at high quality settings the result is inaudible to most listeners.
Yes. Drop a folder onto Convertessa or use the CLI: convertessa /path/to/folder --to ogg. Every WMA file in the folder is converted in one pass.
No. Convertessa runs entirely offline on your Mac. Your WMA files are read from disk, converted in memory, and written back to disk — nothing is sent to any server.