Your files stay on your Mac.
Convertessa reads your .wiki files and maps each section to a Markdown cell in a .ipynb notebook. Headings, lists, and inline formatting carry over so the notebook renders cleanly in JupyterLab or VS Code. Files never leave your Mac — conversion runs entirely offline.
Drag one .wiki file or an entire folder into Convertessa. Nothing is uploaded; the conversion engine runs locally on your Mac.
Choose Jupyter Notebook from the output list. Because .ipynb supports embedded output, you can set quality for any embedded media before the conversion runs.
Click Convert. Convertessa writes .ipynb files alongside your originals, stripping any embedded metadata in the process. Open the results directly in JupyterLab, VS Code, or any compatible 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 top-level section in your .wiki file becomes a Markdown cell in the output notebook. Headings, bold, italic, and list markup are converted to standard Markdown so the cells render without any manual cleanup.
Yes. Convertessa strips embedded metadata — such as author and revision fields — from the source file before writing the .ipynb output, so nothing private carries over into the notebook.
Yes. Point Convertessa at a folder and it converts every .wiki file inside to .ipynb in one pass. From the command line: convertessa ./wiki/ --to ipynb.