Your files stay on your Mac.
Convertessa reads your RTF document's heading structure and maps it to an OPML outline tree. The resulting .opml file carries every title, nested node, and attribute that OPML-aware apps — outliners, podcast clients, feed readers — expect. Your files stay on your Mac throughout; nothing is uploaded.
Drag one RTF file or an entire folder onto Convertessa. The app reads the document outline without uploading anything.
Choose OPML from the output format list. Convertessa maps each heading level in the RTF to a nested OPML
Click Convert. Convertessa writes a valid .opml file next to each source document. Open it in any outliner or feed-reader that accepts OPML.
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 each heading level in the RTF (Heading 1, Heading 2, and so on) to a corresponding nested <outline> element in the OPML tree, so your document hierarchy is intact when you open the file in an outliner.
Yes. Pass the folder path to the CLI (convertessa ./docs/ --to opml) or drop the folder onto the app. Convertessa writes one .opml file per RTF source file.
Convertessa strips document metadata from the output. The resulting OPML contains the outline structure only — no author, creation date, or other document properties are carried over.