Your files stay on your Mac.
Convertessa reads your .txt files and writes them out as .rst files ready for Sphinx, Read the Docs, or any reStructuredText-aware toolchain. Conversion runs entirely on your Mac — nothing is uploaded. Process a single file or an entire folder of documents in one pass.
Drag one .txt file or a whole folder of them onto Convertessa. The app reads every file you add.
Pick reStructuredText from the output format list. Convertessa will write each source file as a .rst document preserving your content.
Click Convert. Your .rst files appear alongside the originals — or in a destination folder of your choice — without ever leaving 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 offline on your Mac. Your .txt files are never sent to a server or third-party service.
Yes. Drop a folder onto Convertessa or pass a directory path with the CLI and every .txt file inside is converted to .rst in one go.
Convertessa writes standard .rst files. Any tool that reads reStructuredText — including Sphinx and Read the Docs — can open them directly.