Your files stay on your Mac.
Convertessa reads your .adoc source files and writes JATS XML — the tag suite used by PubMed, PMC, and scientific publishers worldwide. Sections, paragraphs, lists, and inline markup are mapped to their JATS equivalents. Every file stays on your Mac; nothing is uploaded.
Drag one .adoc file or an entire folder onto Convertessa. The app accepts single files and whole-directory batches in one go.
Pick JATS XML from the output format list. Convertessa will write standards-compliant JATS XML for every source file in your selection.
Click Convert. Output files are written alongside your originals — or to a folder of your choice — without touching the source.
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. Convertessa removes embedded metadata from your AsciiDoc source before writing the JATS XML file, so no author machine details or hidden document properties carry over to the output.
Yes. Drag a folder onto Convertessa and every .adoc file inside is converted to JATS XML in a single pass. The CLI equivalent is convertessa ./docs/ --to jats.
Never. Convertessa runs entirely offline — your .adoc files are read and written locally and are never uploaded to any server.