TTC to WOFF Converter
Processing entirely on your device — large files may take a moment.
Converting WOFF back to TTF/OTF unlocks fonts trapped in old web projects for desktop install and editing. If your files are still in TTC format, this page is the shortcut: TTC packs several TrueType fonts into one file with shared glyph tables — how Microsoft and Apple ship CJK system fonts. The first member extracts as a normal TTF.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How TTC compares to WOFF
| TTC | WOFF | |
|---|---|---|
| Compatibility | Windows, macOS, fonttools | IE9+ and all modern browsers |
| Best for | CJK system font distribution | Legacy-browser web fonts |
How to convert TTC to WOFF
- 1
Select your files
Drag & drop your TTC files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to WOFF". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted WOFF file individually, or grab everything at once as a ZIP archive.
About the TTC format
TTC (TrueType Collection) is how you ship five CJK fonts in one download: a small ttcf header with member offsets points into shared glyph tables, so the fonts that differ only in metrics cost almost nothing extra. Microsoft's SimSun family and macOS system fonts are TTCs.
Most font tools want a single font, not a collection — extraction picks the first member and trims it to its own table directory, producing an ordinary TTF that every converter and @font-face rule accepts.
+Strengths
- ✓Shared glyphs make multi-font files small
- ✓Standard on Windows and macOS for CJK
- ✓First member extracts to a clean TTF
!Limitations
- −Most apps cannot use a collection directly
- −Web @font-face does not accept TTC
- −Members share glyphs — editing one is tricky
About the WOFF format
WOFF (Web Open Font Format, 2010) wrapped TTF/OTF data in a web-first container: zlib compression (~40% smaller), strict table structure, and optional license metadata that foundries required before allowing web embedding. It powered the first generation of real web typography under @font-face.
Its successor WOFF2 compresses better with Brotli and has since become the only format modern sites ship. WOFF remains useful for one reason: legacy browsers (IE9–IE11 era) that never learned WOFF2.
+Strengths
- ✓Compressed and web-legal by design
- ✓Works back to IE9-era browsers
!Limitations
- −Superseded by WOFF2 everywhere current
- −Larger than WOFF2 for identical glyphs
Why convert TTC to WOFF?
Converting makes sense where the strengths of WOFF meet what TTC cannot give you. Compressed and web-legal by design Meanwhile Most apps cannot use a collection directly One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this TTC to WOFF converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for TTC to WOFF?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Can I install the WOFF file on my computer?
That depends on the target: desktop systems install TTF/OTF files directly, while WOFF is a web container meant to be served with @font-face rather than installed. Keep the original for desktop use.
Do I still need the license for the converted font?
Yes. Converting a format does not change its license — the same foundry terms apply wherever the font is used, including the web.