Your files stay on your Mac.
Convertessa reads your .md files and writes standard roff-formatted man pages the macOS and Linux man command can display natively. The conversion runs entirely on your Mac — no file is uploaded anywhere. Convert a single document or a whole folder of docs in one pass.
Drag one .md file or an entire folder into Convertessa. The app lists every file queued for conversion before anything runs.
Choose Man Page (roff) from the output format list. Convertessa will write each result as a .man roff document using standard groff macros your system understands.
Click Convert. Convertessa writes the roff files alongside your originals or to a destination folder you choose. Your source .md files are never modified.
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.
Yes. Pass the folder path to the CLI (convertessa ./docs/ --to man) or drop the folder onto the Convertessa window. Every .md file inside is converted in one pass.
No. Convertessa runs entirely offline on your Mac. Your Markdown files never leave your machine — there is no upload step and no internet connection required.
Convertessa writes standard groff/troff man page markup, including .TH, .SH, .TP, and related macros. The output can be read directly by the man command on macOS and Linux without any post-processing.