Your files stay on your Mac.
Convertessa reads your RTF file and emits a roff source file formatted for Unix Man Pages. Headings, bold, and list structure map to standard .TH, .SH, and .B macros ready for nroff. Every file is processed locally — nothing is uploaded, ever.
Drag one .rtf file or an entire folder onto Convertessa. Batch mode processes every Rich Text file in the folder in a single pass.
Choose Man Page (roff) from the output format list. Convertessa targets the roff macro set used by standard Unix man pages.
Click Convert. Convertessa writes a .man roff file alongside each source document. Feed the output directly to nroff or bundle it with your software distribution.
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.
Headings, bold, italic, and list items map to the corresponding roff macros (.TH, .SH, .B, .I, .IP). Decorative formatting that has no Man Page equivalent is dropped cleanly rather than converted to noise.
Yes. Drag a folder onto Convertessa and every .rtf file inside is converted in one pass. From the command line, run convertessa ./docs/ --to man to process the entire directory.
Yes. Author, company, and revision metadata embedded in the RTF are stripped during conversion. The output roff file contains only document content.