Your files stay on your Mac.
Phase One IIQ files store unprocessed sensor data from Phase One medium-format cameras in a proprietary format that most image editors cannot open directly. Converting to TIFF renders the file into a lossless, universally-supported raster image any application can read. Full resolution is preserved and EXIF metadata is stripped during conversion.
Drag one IIQ file or an entire folder of IIQ files onto Convertessa. Batch mode processes every file in a single pass.
Choose TIFF from the output format list. Because TIFF is lossless, no quality settings are required.
Convertessa converts your files entirely on your Mac — nothing is uploaded. The resulting TIFF files are saved alongside the originals.
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. TIFF is a lossless format, so every pixel from the rendered RAW file is preserved exactly as-is.
Yes. Drop a folder onto Convertessa or run convertessa /path/to/folder --to tiff in the terminal and every IIQ file in that folder is converted in one pass.
No. Convertessa runs entirely on your Mac. Files never leave your computer — important for client work covered by NDAs or confidentiality requirements.