Your files stay on your Mac.
Convertessa decodes your Pentax RAW (.pef) sensor data and re-encodes it as a standard JPG, preserving the full capture resolution and stripping embedded EXIF metadata on the way out. You set the quality level to balance file size against image fidelity. Nothing leaves your Mac.
Drag one .pef file or an entire folder of Pentax RAW files onto Convertessa. Batch mode processes every .pef in the folder in a single pass.
Choose JPG from the output format list, then set the quality level to control how much the encoder compresses the result.
Click Convert. Convertessa writes one JPG per RAW file alongside the originals — no server, no upload, no waiting.
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 decodes each PEF at its native sensor resolution and writes the JPG at that same pixel count.
No — Convertessa strips embedded EXIF metadata during conversion, so the output JPG contains no camera model, lens, or location data.
Yes. Point Convertessa at any folder and it converts every .pef file inside in one pass — useful for importing an entire memory card's worth of Pentax RAW files.