Your files stay on your Mac.
Converting OPML to AsciiDoc maps each outline node to an AsciiDoc list item or section, preserving the full nesting depth of your original file. The result is plain-text markup ready for Asciidoctor, documentation pipelines, or static-site generators. Embedded metadata is stripped during conversion.
Drag one OPML file or an entire folder into Convertessa. Files never leave your Mac — conversion runs completely offline.
Choose AsciiDoc from the output format list. Convertessa maps every outline node to the corresponding AsciiDoc structure, keeping nesting intact.
Click Convert. Convertessa writes one .adoc file per source file, ready to open in any text editor or feed straight into Asciidoctor.
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. Each level of nesting in your OPML file becomes the equivalent nested list or section in the AsciiDoc output. No depth is flattened or lost.
No — Convertessa strips metadata from the file during conversion. The AsciiDoc output contains only the structural content from your OPML outline.
Yes. Drag a whole folder into Convertessa or run convertessa *.opml --to adoc in the terminal to batch-convert every OPML file in one pass.