Your files stay on your Mac.
Convertessa reads your .muse files and writes valid Texinfo source that makeinfo, texi2pdf, and other GNU Texinfo utilities can process without modification. Headings, tagged regions, and inline markup are mapped to the corresponding Texinfo commands. The conversion runs entirely on your Mac — no files are uploaded and no internet connection is required.
Drag a single .muse file or an entire folder of Muse documents onto Convertessa. You can mix files freely in one batch.
Choose Texinfo from the output list. Because Texinfo is a lossless plain-text format, no additional settings are required.
Click Convert. Convertessa writes .texi files alongside your originals or into a destination folder you specify. Folder structure is preserved for batch jobs.
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 Convertessa — every .muse file inside is converted in a single pass and the original folder structure is reproduced in the output.
Convertessa produces standard Texinfo source. You can feed the resulting .texi files directly to makeinfo, texi2pdf, or any other GNU Texinfo tool without editing them first.
No. Convertessa is a standalone Mac app. It parses Muse markup natively and requires no Emacs installation or external dependencies.