Your files stay on your Mac.
Convertessa reads each .txt file and writes a standard Word .docx file — entirely on your Mac, nothing uploaded. Use it to hand a plain-text draft to someone who expects a Word document, or to feed .txt output from scripts and editors into a Word-based workflow. Batch mode converts an entire folder in one pass.
Drag one .txt file, a selection, or an entire folder onto the Convertessa window. Every file is read locally — nothing leaves your Mac.
Choose Word from the output format list. Convertessa targets the .docx standard, compatible with Microsoft Word, Apple Pages, and LibreOffice.
Click Convert. A .docx file is written next to each source file, ready to open or share.
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 onto Convertessa and every .txt inside is converted to .docx in one pass. From the terminal, run convertessa *.txt --to docx to batch-convert all plain-text files in the current directory.
No. Convertessa runs entirely on your Mac. Your .txt files are never sent to any server.
Yes. Convertessa writes standard .docx files compatible with Microsoft Word, Apple Pages, Google Docs (on import), and LibreOffice.