Your files stay on your Mac.
GIMP's XCF format stores every layer, channel, and path as editable data — a format almost nothing outside GIMP can open. Converting to TIFF composites those layers into a single high-resolution raster image that design tools, print workflows, and photo editors all accept. Convertessa does the whole job locally on your Mac; your files never touch a server.
Drag one XCF file or an entire folder of XCF files onto Convertessa. Batch mode processes every file in one pass with no size limit.
Choose TIFF from the output format list. Because TIFF is lossless, Convertessa preserves every pixel at full resolution exactly as composited from your XCF layers.
Click Convert. Convertessa flattens the XCF layer stack and writes the TIFF files to your chosen destination folder — 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.
Yes. TIFF stores a single raster image, so all GIMP layers are composited and flattened into one image during conversion. Your original XCF file is left untouched.
No. TIFF is a lossless format, so every pixel of the flattened composite is preserved at full resolution with no quality loss.
Yes. Drop a folder onto Convertessa or run convertessa ./folder/ --to tiff on the command line to convert every XCF file in one pass.