Your files stay on your Mac.
OpenDocument Text (.odt) is the open document format used by LibreOffice, OpenOffice, and compatible office suites. Convertessa converts your .odt files into PDF, DOCX, Markdown, EPUB, HTML, and 19 other formats directly on your Mac. No account, no upload — every conversion runs offline.
Drag a single .odt file or an entire folder into Convertessa. You can also pass files directly on the command line. Document content is read locally — nothing is sent to a server.
Pick a target — choose PDF, DOCX, Markdown, EPUB, HTML, or any of the 23 supported formats from the output list. If the target format is lossy, set the quality level before converting.
Click Convert. Convertessa writes the result to your Mac and strips document metadata from the output file. Whole-folder batches finish in one pass.
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 supports batch conversion: point it at a folder and every .odt file inside is converted in one pass. On the command line, run convertessa ./docs/ --to pdf (or swap pdf for any supported target).
Yes. Convertessa strips document metadata — author, revision history, and other embedded properties — from the output file during conversion.
No. Convertessa runs entirely offline. Your .odt files are read and converted on your Mac; they never leave your machine and no internet connection is required.