Your files stay on your Mac.
DTS stores surround audio as a compressed bitstream. Converting to AIFF decodes that bitstream into uncompressed PCM, producing a standard lossless file that any audio editor, DAW, or media player can open without a dedicated DTS decoder. The original sample rate and bit depth are preserved, and metadata is stripped from the output.
Drag individual DTS files or an entire folder into Convertessa. Everything is processed locally — files never leave your Mac.
Pick AIFF from the output format list. Convertessa decodes the DTS bitstream and writes uncompressed PCM into a standard AIFF container.
Click Convert. Convertessa processes all files on-device and saves the AIFF output to your chosen destination folder.
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. AIFF is an uncompressed lossless format. Convertessa decodes the DTS bitstream directly to PCM with no re-encoding, so the output is bit-for-bit accurate to what the source stream encodes.
Yes. The sample rate and bit depth from the source DTS stream are carried through to the AIFF file unchanged.
Yes. Drag a folder into Convertessa or run convertessa ./folder/ --to aiff in the terminal to batch-convert every DTS file in the directory in one pass.