Your files stay on your Mac.
Convertessa reads your .rst markup, maps headings, paragraphs, lists, and code blocks into EPUB chapter structure, and writes a self-contained e-book file ready for any reader app. Files never leave your Mac. Set quality to control how embedded images are encoded in the output.
Drag one .rst file or a whole folder onto Convertessa. Batch mode processes every file in the folder automatically.
Pick EPUB from the output format list. Set quality to adjust how images embedded in the e-book are encoded.
Click Convert. Convertessa writes one .epub per source document, preserving document structure. Nothing is uploaded — everything runs 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.
No. Convertessa runs entirely on your Mac. Your reStructuredText files are read locally and the EPUB is written to your chosen output folder — nothing is sent to a server.
Yes. Drop the folder onto Convertessa or run convertessa ./docs/ --to epub in the terminal. The app converts every .rst file it finds and writes a matching .epub for each one.
Convertessa maps reStructuredText headings, paragraphs, lists, and code blocks into proper EPUB chapter structure. The output is a reflowable e-book any EPUB-compatible reader can open.