Your files stay on your Mac.
AsciiDoc is a plain-text markup format built for technical documentation. Converting it to OpenDocument Text produces an editable .odt file that opens in LibreOffice, OpenOffice, or any ODT-compatible word processor. Convertessa renders the document entirely on your Mac — your source files never leave your machine.
Drag one .adoc file or an entire folder into Convertessa. The app reads each file's markup in full — headings, lists, code blocks, and inline formatting.
Choose OpenDocument Text from the output format list. Convertessa maps AsciiDoc block and inline elements to their ODT equivalents, preserving your document structure.
Click Convert. Your .odt files are saved alongside the originals, ready to open in LibreOffice Writer or any ODT-compatible application.
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.
No. Convertessa runs entirely on your Mac. Conversion happens locally with no network connection required — your files never leave your machine.
Yes. Drag a folder into Convertessa or use convertessa ./folder/ --to odt on the command line. Every .adoc file in the folder is converted in one pass.
Convertessa maps AsciiDoc structural elements — headings, lists, bold, italic, and code blocks — to their OpenDocument Text counterparts. The resulting .odt file is fully editable and retains your document's outline.