Your files stay on your Mac.
Converting a TTC to WOFF2 unpacks the font collection and repackages each face as a standalone WOFF2 file, the compressed format browsers load fastest. The glyph outlines, hinting, and kerning are carried over unchanged — nothing is redrawn or re-hinted. The whole process runs offline on your Mac, so the fonts never leave your machine.
Add one file or an entire folder of TTC collections — Convertessa runs entirely offline, so nothing uploads anywhere.
Choose WOFF2 from the output list. Convertessa never auto-detects or guesses a target — you always pick it.
Convertessa unpacks each font face and repackages it as a compressed WOFF2 file, copying the glyph outlines, hinting, and kerning across unchanged.
Images, audio, video, documents, archives, eBooks and fonts — 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. The glyph outlines, hinting instructions, and kerning tables are copied over unchanged — the conversion only repackages the font data into the WOFF2 container.
Yes. Point Convertessa at a folder and every TTC file inside is converted to WOFF2 in one batch run, entirely offline.
No. Changing the file format doesn't change the font's licence — whatever redistribution or embedding terms the original font came with still apply after conversion.