Your files stay on your Mac.
reStructuredText files use plain-text markup built for technical documentation. Converting to HTML renders that markup as standard web tags — headings, lists, code blocks, hyperlinks — ready to embed in a site or docs portal. Every file stays on your Mac; nothing is uploaded.
Drag one or more .rst files — or an entire folder — into Convertessa. The app reads each file locally with no internet connection required.
Choose HTML from the output format list. Convertessa will write one .html file for each .rst source.
Click Convert. Your HTML files are saved alongside the originals. All RST markup — sections, directives, code blocks, and inline roles — is rendered as standard HTML elements.
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. Drag the folder into Convertessa or pass the directory path on the command line with convertessa ./docs/ --to html. Every .rst file in the folder is converted in one pass.
Yes. RST directives, code-block sections, inline roles, and section headings are all rendered as their HTML equivalents. The output is clean, standards-compliant HTML.
No. Convertessa runs entirely offline. Your .rst files are processed on your Mac and are never uploaded to any server.