Your files stay on your Mac.
Converting a WMV file to WAV extracts the audio track and writes it as uncompressed PCM — the format DAWs, editors, and audio tools read natively. Everything runs on your Mac; no file ever leaves the machine. Drag a folder of WMV files and Convertessa processes them all at once.
Drag one WMV file or an entire folder onto Convertessa. All files are read locally — nothing is uploaded anywhere.
Choose WAV from the output list. Convertessa writes uncompressed PCM audio — no lossy encoding step, no signal degradation.
Click Convert. Convertessa extracts the audio track from each WMV and saves a WAV file alongside the original. Batch jobs finish in the background.
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. WAV stores uncompressed PCM audio, so the output is a lossless copy of the audio track from the WMV container. No re-encoding step degrades the signal.
Yes. Drag the folder onto Convertessa or run convertessa /folder/*.wmv --to wav in the terminal. Every WMV in the folder is processed in one pass.
Never. All conversion happens locally on your Mac. Your WMV files never leave the machine.