Your files stay on your Mac.
OPML stores hierarchical outlines—feed subscriptions, reading lists, and podcast libraries—as XML. Convertessa walks each outline node and renders it as a Markdown list item, preserving nesting depth. The result is a plain-text file you can edit in any editor, paste into a note, or commit to a repo.
Drag one file or an entire folder of OPML exports onto Convertessa. The app queues every file for conversion without uploading anything to a server.
Choose Markdown from the output list. Convertessa maps each OPML outline node to a Markdown list item, keeping the full hierarchy intact.
Click Convert. Your Markdown files land beside the originals. Batch jobs finish in one pass—no cloud round-trip, no waiting.
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.
Each level of nesting in the OPML <outline> tree becomes an indented Markdown list item. A two-level OPML outline produces a two-level Markdown list with no structure lost.
Yes. Drop a folder onto Convertessa or run convertessa ./folder/ --to md to process every OPML file in one pass. Each input file produces a corresponding .md file.
No. Convertessa converts files entirely on your Mac. Nothing is uploaded to a server or third-party service.