Your files stay on your Mac.
Man pages are written in roff (troff) markup — the terse typesetting language used throughout Unix documentation. Convertessa parses the roff source and emits an EPUB file with structured chapters, headings, and code blocks readable in any EPUB reader. Processing happens entirely on your Mac; no files are uploaded.
Drag one .man file or an entire folder of man pages into Convertessa. Batch mode handles hundreds of pages in one pass.
Choose EPUB from the output list. Set quality for any embedded images in the output if needed.
Click Convert. Convertessa processes every file locally and saves the EPUB files alongside the originals — or to a folder you specify.
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 a folder path to the CLI (convertessa ./manpages/ --to epub) or drop the folder onto the Convertessa window. Every .man file inside is converted in one pass.
No. Convertessa runs entirely offline. Files are never uploaded to any server — conversion happens on your machine.
Convertessa translates roff structure — sections, headings, synopsis blocks, and code examples — into equivalent EPUB markup, so the document reads naturally in any EPUB reader.