Your files stay on your Mac.
Convertessa reads your .muse files and rewrites the markup as Djot—headings, lists, links, inline emphasis, and fenced code blocks all map to their Djot equivalents. Conversion runs entirely on your Mac; no file is uploaded anywhere. Batch mode converts a whole folder of Muse documents in one pass.
Drag one or more .muse files into Convertessa, or point it at a folder to process every Muse document at once.
Pick Djot from the output format list. Convertessa will rewrite each document using Djot's clean, unambiguous markup syntax.
Click Convert. Your .djot files are written alongside the originals—or to a destination folder you choose—leaving the source .muse files untouched.
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, paragraphs, ordered and unordered lists, links, inline emphasis (bold, italic), and fenced code blocks all convert to their Djot counterparts. Muse directives that have no Djot equivalent are dropped and noted in the conversion log.
No. Convertessa always writes output to a new file. Your source .muse files are never modified or deleted.
Yes. Pass the folder path and every .muse file inside is converted to Djot in one run: convertessa ./docs --to djot. You can also drop the folder into the app window.