Your files stay on your Mac.
Convertessa reads each OpenDocument Text file and writes an IPYNB file with document content mapped to notebook cells. Document metadata is stripped from the source file during conversion. The entire process runs locally on your Mac — no upload, no account, no network connection required.
Drag one ODT file or an entire folder into Convertessa. Batch mode queues every file in the folder and converts them in a single pass.
Pick Jupyter Notebook from the output format list. Set quality to control output fidelity before the conversion runs.
Click Convert. Convertessa writes the IPYNB files to your destination folder. Document metadata is stripped and nothing leaves your Mac.
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 offline. Your OpenDocument Text files are read and written on your Mac — nothing is sent to a server at any point.
Yes. Drag a folder into Convertessa or run convertessa ./folder/ --to ipynb to batch-convert every ODT file in one pass without opening them one by one.
Yes. Convertessa strips metadata from your OpenDocument Text files as part of the conversion, so the resulting IPYNB files contain only the document content you are exporting.