Your files stay on your Mac.
Canon RAW 3 (CR3) is the proprietary sensor-data format used by Canon's EOS R-series cameras. Converting to TIFF extracts the full-resolution image into a lossless, universally readable file that opens in any editor, print workflow, or archive system. No proprietary decoder is required on the receiving end.
Drag individual .cr3 files or an entire folder onto Convertessa. Batch mode processes every CR3 in the folder in a single pass, so you never have to convert one file at a time.
Choose TIFF from the output format list. Convertessa writes lossless TIFF files at the original capture resolution — every pixel from the sensor is preserved in the output.
Click Convert. Your TIFF files are saved alongside the originals on your Mac. No upload, no account, 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.
No. Convertessa runs entirely on your Mac using local system libraries. Your CR3 files never leave your machine — there is no upload step and no internet connection required at any point.
Yes. Convertessa removes embedded metadata — including EXIF camera data, GPS coordinates, and creator fields — from the output TIFF. The full-resolution pixel data is preserved.
Yes. Drag any folder onto Convertessa and every CR3 inside is converted to TIFF in one pass. From the command line: convertessa ./folder/ --to tiff.