Your files stay on your Mac.
Convertessa reads DocBook's hierarchical parts, chapters, and sections and maps each one to a nested OPML outline node. The resulting file opens in any RSS reader, outliner, or mind-mapping tool that accepts OPML. All processing happens locally — nothing is uploaded.
Drag one .dbk file or an entire folder onto Convertessa. Every file queues instantly, no size limit.
Choose OPML from the output format list. Convertessa maps each DocBook section element to a matching outline node in the target tree.
Click Convert. OPML files land in the destination folder with the full document hierarchy intact. Files never leave your Mac.
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 maps DocBook <part>, <chapter>, and <section> elements to nested <outline> nodes, preserving the full document tree in the OPML output.
Yes. Pass a folder path — convertessa ./docs/ --to opml — and every .dbk file in the folder is converted in one run. Output files are written to the destination folder you configured.
No. Convertessa strips DocBook XML attributes and metadata, producing a clean outline that any OPML-compatible reader can open without unexpected extra nodes.