Your files stay on your Mac.
JATS XML is the international standard for scholarly and scientific article markup. ICML is Adobe InCopy's native story format, used in InDesign editorial workflows. Convertessa reads your JATS file and writes clean ICML that InCopy and InDesign can open directly — no upload, no cloud, no waiting.
Drag one file or an entire folder of .jats documents onto Convertessa. Your files are processed on your Mac and never sent anywhere.
Pick ICML (InCopy) from the output list. Convertessa writes one .icml story file per source document, preserving text structure and stripping embedded metadata.
Click Convert. Output files land beside your originals, ready to place in InDesign or open in InCopy.
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. Convertessa runs entirely on your Mac. Your files are processed locally and never sent to any server.
Yes. Drop a folder onto Convertessa or run convertessa ./manuscripts --to icml in Terminal to batch-convert every JATS file in one pass.
Convertessa strips embedded metadata from the source JATS XML when producing the ICML output, giving you clean story files with no residual document properties.