Your files stay on your Mac.
Convertessa reads each .ipynb file — markdown cells, code blocks, and plain-text outputs — and writes an ICML story file that Adobe InCopy and InDesign can place directly into a layout. All conversion runs locally on your Mac; files never leave your machine. Use the quality setting to control how much notebook output detail is preserved in the exported text.
Drag one or more .ipynb files into Convertessa, or drop an entire folder to batch-convert all notebooks at once.
Choose ICML (InCopy) from the output list, then adjust the quality setting to control how much notebook output detail is retained in the exported story.
Click Convert. Convertessa writes one ICML file per notebook to the same folder — ready to place in Adobe InCopy or InDesign.
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.
Convertessa exports markdown cells, code cells, and plain-text cell outputs into the ICML story structure. Rich outputs such as embedded HTML tables are omitted — ICML is a text-flow format.
No. Convertessa strips notebook metadata from the exported ICML file. Only the cell content flows through to the story.
Yes. Drop a folder onto Convertessa or run convertessa *.ipynb --to icml in your terminal to batch-convert every notebook in the current directory.