Your files stay on your Mac.
Converting a Rich Text file to Markdown strips the proprietary RTF encoding and outputs a lightweight .md file with standard Markdown syntax. Headings, bold, italic, and lists are each mapped to their Markdown equivalents. The result works in any text editor, static site generator, or version-controlled documentation workflow.
Drag one .rtf file or an entire folder onto Convertessa. Files never leave your Mac — conversion runs fully offline.
Choose Markdown from the output format list. Convertessa will map RTF structure — headings, emphasis, and lists — to Markdown syntax.
Click Convert. Each .rtf file becomes a .md file in the same folder. Batch runs process every file 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.
Headings (H1–H6), bold, italic, and unordered and ordered lists are each mapped to their Markdown equivalents. Inline styles that have no Markdown counterpart — such as font colour or tab stops — are dropped, leaving clean plain-text output.
Yes. Drop a folder onto Convertessa or pass the directory path on the command line with convertessa ./folder/ --to md. Every .rtf file inside is converted in a single batch run, each producing its own .md file alongside the original.
No. Convertessa converts files locally on your Mac. Nothing is sent to a server, and no internet connection is required.