Your files stay on your Mac.
WavPack and FLAC are both lossless formats, so every audio sample is preserved exactly during conversion. FLAC's wider hardware and software support makes it the practical default for music libraries, portable players, and archiving workflows. Convertessa re-encodes your .wv files to FLAC on your Mac — nothing is uploaded.
Drag one .wv file or an entire folder into Convertessa. Batch processing handles whole albums or libraries in a single pass.
Choose FLAC from the output format list. Because both formats are lossless, no quality settings are needed — the conversion is exact.
Click Convert. Convertessa encodes your files locally; they never leave 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.
No. Both WavPack and FLAC are lossless formats. Convertessa decodes the WavPack audio exactly and re-encodes it as FLAC, preserving every sample bit-for-bit.
Yes. Drag a folder onto Convertessa or use the CLI: convertessa /path/to/folder --to flac. Every .wv file in the folder is converted in one pass.
FLAC is supported by a much wider range of music players, streaming apps, and portable devices than WavPack. Converting lets you use the same lossless audio in more places without re-encoding from a lossy source.