Your files stay on your Mac.
Convertessa reads your OPML file's outline hierarchy and writes it as a Rich Text (RTF) document, mapping titles, descriptions, and nesting to formatted paragraphs. Everything runs locally — your files never leave your Mac. You can set quality for any embedded image content written into the RTF output.
Drag one OPML file or an entire folder into Convertessa. Batch mode processes every .opml file in the folder in one pass, no setup required.
Pick Rich Text from the output format list. Set quality if your output will contain embedded image content.
Convertessa writes the RTF file alongside your original. No internet connection required — conversion happens entirely on 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 each OPML outline node to a formatted paragraph, preserving nesting depth as indentation so the hierarchy stays readable in any RTF-compatible editor.
Feed URLs and other OPML attributes are written as plain text in the converted document so no structured data is silently dropped.
Yes. Drop the folder onto Convertessa or run convertessa ./folder --to rtf in the terminal. Every .opml file is converted in a single pass.