Your files stay on your Mac.
Org Mode files interleave structured prose, headings, and #+BEGIN_SRC blocks in plain text. Converting to Jupyter Notebook maps each source block to an executable code cell and the surrounding text to Markdown cells. Convertessa does the entire conversion on your Mac — no file is ever uploaded.
Drag one .org file or an entire folder into Convertessa. The app reads your source blocks, headings, and body text locally without sending anything to a server.
Pick Jupyter Notebook from the output format list. Each .org file will produce a matching .ipynb file with code cells, Markdown cells, and metadata intact.
Click Convert. Convertessa writes the .ipynb files alongside your originals. Open them directly in JupyterLab, VS Code, or any other notebook viewer.
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.
Each #+BEGIN_SRC block becomes a code cell in the output notebook. The language tag on the block is preserved as the cell's kernel language. Prose and headings between blocks are written as Markdown cells.
Yes. Drag a folder onto Convertessa or run convertessa *.org --to ipynb in the terminal. Every .org file in the selection is converted in a single pass.
No. Convertessa runs entirely on your Mac. Your .org files are read and written locally — nothing is sent over the network.