Your files stay on your Mac.
HEIC is Apple's native photo container — compact on device, but unreadable by most apps and websites. Convertessa decodes each HEIC file into a standard, lossless PNG that opens everywhere. Your files never leave your Mac: no upload, no account, no internet required.
Drag a single HEIC photo or an entire folder onto Convertessa. Batch mode picks up every .heic file in the folder and queues them all at once.
Choose PNG from the output format list. Convertessa writes a full-fidelity PNG, preserving the original resolution and producing a lossless result.
Click Convert. PNG files appear alongside your originals — or in a destination folder you select. EXIF and metadata are stripped from every output file.
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 decodes the HEIC pixel data and writes it directly to PNG — every pixel is preserved exactly, with no recompression artifacts.
No. Convertessa strips EXIF and metadata from every converted file, so GPS coordinates, camera model, timestamps, and other embedded data are removed from the output PNG.
Yes. Drop a folder onto Convertessa and batch mode converts every .heic file inside it in a single pass. You can also use the CLI: convertessa ./photos --to png.