Your files stay on your Mac.
Convertessa reads each .html file and writes a .rst file that maps headings, paragraphs, inline markup, links, and code blocks to their reStructuredText equivalents. The conversion runs entirely on your Mac — no file is uploaded or sent to a server. Drop a single document or point Convertessa at a folder to process every HTML file at once.
Drag one or more .html files into Convertessa, or select a whole folder to queue every HTML document inside it for batch conversion.
Choose reStructuredText from the output format list. Convertessa will produce a .rst file for each HTML source you added.
Click Convert. Your .rst files are saved alongside the originals — or to a destination folder you pick. No internet connection needed.
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 maps <h1>–<h6> to RST section underlines, <strong> and <em> to bold and italic markup, <code> and <pre> to inline code and code blocks, and <a href> to RST hyperlink targets.
Yes. Pass a folder path to Convertessa and it will locate every .html file inside and convert each one to .rst in a single run. The output files are written to the same directory structure.
Convertessa outputs standard reStructuredText that is compatible with Sphinx. After conversion you can drop the .rst files into your Sphinx source tree and build as normal.