Your files stay on your Mac.
Kodak DC RAW (.kdc) files store unprocessed sensor data captured by Kodak digital cameras. Converting to JPG decodes that raw sensor data and writes a standard JPEG at full resolution, ready to share, upload, or print. Convertessa runs the entire process on your Mac — files never leave your machine.
Drag one .kdc file or an entire folder of them onto Convertessa. Batch mode processes every file in one pass.
Choose JPG from the output format list. Set the output quality level to balance file size against image fidelity — or leave it at the default for the best-quality result.
Click Convert. Convertessa decodes each KDC at full resolution and writes the JPGs to your chosen destination folder, with no upload and no internet connection required.
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 can strip all EXIF and embedded metadata from the output JPG before saving. Enable the option in preferences or pass --strip-exif on the command line.
Yes — JPG is a lossy format, so Convertessa lets you set the output quality level. Higher values preserve more detail; lower values produce smaller files. The default is set for high quality with reasonable file sizes.
Yes. Drop a folder onto Convertessa or run convertessa ./folder --to jpg in the terminal. Every .kdc file in the folder is converted in one batch, preserving the original filenames with a .jpg extension.