Your files stay on your Mac.
Converting a Canon RAW 3 file to PNG extracts the full-resolution image data and writes it as a lossless, widely-compatible PNG. No lossy compression is applied, so every pixel from the CR3 is preserved exactly. EXIF and embedded metadata are stripped from the output file.
Drag one CR3 file or an entire folder of Canon RAW 3 files onto Convertessa. Files never leave your Mac — no upload, no cloud, no account.
Choose PNG from the output format list. PNG is lossless, so no quality setting is needed — Convertessa preserves all image data from the original CR3.
Click Convert. Convertessa processes every file locally and saves each PNG alongside the original. Batch jobs run in one pass.
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. PNG is a lossless format. Convertessa preserves every pixel from the Canon RAW 3 file with no lossy compression applied to the output.
Yes. Convertessa strips embedded EXIF and metadata from the output PNG, so location data, camera settings, and shooting information are not carried over.
Yes. Drop a folder onto Convertessa and it converts every CR3 file inside to PNG in one pass — entirely offline, nothing uploaded.