Your files stay on your Mac.
Convertessa reads each .rtf file and writes it out as an .odt document that conforms to the OpenDocument Text specification. The converter runs entirely on your Mac — no file is uploaded or transmitted. You control output quality and can strip document metadata before the files leave the app.
Drag one .rtf file or an entire folder of them onto the Convertessa window. The app lists every file and shows you the source format it detected.
Select OpenDocument Text from the output format list. Set the quality level to taste and toggle metadata stripping if you want a clean output file.
Click Convert. Convertessa processes every file locally and writes the .odt output to the destination folder you choose — nothing leaves 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.
Convertessa passes text styles, paragraph formatting, and inline content from the .rtf source through to the .odt output. The converter works at the document level — it does not reinterpret or reflow your content.
Yes. Drop the folder onto the Convertessa window or run convertessa /path/to/folder --to odt in your terminal. Every .rtf file in the folder is converted in one pass, with output written alongside the originals or to a folder you specify.
Convertessa can strip document metadata — author name, revision history, and similar properties — before writing the .odt file. Toggle the option in the output panel before you click Convert.