Your files stay on your Mac.
Convertessa reads your Monkey's Audio (.ape) files and writes them out as FLAC — both are lossless codecs, so no audio data is discarded in the process. The conversion runs entirely on your Mac; files never leave your machine. Drop a single track or an entire album folder and Convertessa handles every file.
Drag one or more .ape files — or a whole folder — onto Convertessa. The app reads each file locally; nothing is uploaded to any server.
Choose FLAC from the output format list. Because both Monkey's Audio and FLAC are lossless, Convertessa can produce an exact audio copy in the new container.
Click Convert. Convertessa processes every file on your Mac and saves the resulting .flac files alongside the originals.
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. Monkey's Audio and FLAC are both lossless codecs. Convertessa decodes the APE bitstream and re-encodes it as FLAC without discarding any audio data, producing a bit-perfect copy in the new container.
Yes. Drag the folder onto Convertessa or use the batch CLI command and every .ape file inside is converted to FLAC in one pass — no need to process tracks one at a time.
Always. Convertessa runs entirely offline. Your .ape files are read and written locally; no data is sent to any server at any point.