Your files stay on your Mac.
Convertessa reads each Jupyter Notebook cell — code, markdown, and rich output — and writes them as structured DocBook XML. The resulting .dbk file slots directly into DocBook-based publishing pipelines and technical documentation toolchains. Nothing is uploaded; files never leave your Mac.
Drag one or more .ipynb files into Convertessa, or select a whole folder of notebooks for batch conversion.
Choose DocBook from the output format list. Convertessa maps each notebook cell to the appropriate DocBook element — code blocks, sections, and prose — preserving the structure of the original notebook.
Click Convert. Convertessa writes .dbk files alongside your originals, ready to hand off to any DocBook toolchain or documentation pipeline.
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 code cell becomes a <programlisting> block in the DocBook file. Cell outputs are preserved as adjacent content so the document reads like an executed notebook.
Yes. Drag the folder onto Convertessa or run convertessa ./notebooks/ --to dbk to process every .ipynb file in one pass.
Yes. Convertessa removes embedded notebook metadata — such as kernel info and environment details — from the output, keeping the DocBook file clean for downstream processing.