Your files stay on your Mac.
Convertessa reads each RWL file, renders the full-sensor data, and writes a lossless TIFF — no upload, no cloud processing, no intermediate copies. EXIF and embedded metadata are stripped from the output file. Resolution is preserved exactly as captured by the camera.
Drag one RWL file or an entire folder of Leica RAW files onto Convertessa. The app reads each file locally — nothing is uploaded.
Choose TIFF from the output format list. TIFF stores image data without lossy compression, so every pixel from the original capture is retained.
Click Convert. Convertessa writes one TIFF per source file, preserving the original resolution and stripping embedded metadata.
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.
Yes. Convertessa preserves the full resolution from the RWL file. No resampling is applied.
No. Convertessa strips EXIF and other embedded metadata from every output TIFF. The image data itself is untouched.
Yes. Drop a folder onto Convertessa or run convertessa ./folder/ --to tiff in the terminal. Every RWL file in the folder is converted in one pass.