Your files stay on your Mac.
Convertessa reads each .ipynb file and maps its cells into AsciiDoc: code cells become delimited source blocks with language tags, and markdown cells become paragraphs, headings, and lists. Outputs and metadata are stripped, leaving clean markup ready for documentation pipelines, Antora, or any AsciiDoc toolchain. Every conversion runs on your Mac — no upload, no cloud.
Drag one .ipynb file or an entire folder of notebooks onto Convertessa. The app reads each file's cell structure directly — no Jupyter installation required.
Choose AsciiDoc from the output format list. Convertessa will write one .adoc file per notebook, preserving cell order and code-language hints.
Click Convert. Each notebook is processed locally and saved alongside the original. Open the .adoc files immediately in any text editor or feed them into your docs build.
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.
Cell outputs — printed text, tracebacks, display data — are not included in the AsciiDoc output. Only the source of each cell is converted, keeping the resulting document clean and source-control friendly.
Yes. Code cells become [source] blocks tagged with the notebook's kernel language (e.g. [source,python]). Markdown cells are converted to native AsciiDoc paragraphs, headings, lists, and inline formatting. Raw cells are passed through as literal blocks.
Yes — drag the folder onto Convertessa or run convertessa notebooks/ --to adoc in Terminal. Every .ipynb file in the folder is converted in one pass, with one .adoc file written per notebook.