Free online TTC to OTF converter

Some design, publishing, CAD, and font-management applications require one standalone OpenType font instead of a TrueType Collection. Converting the collection extracts the required face as an individual .otf file; renaming .ttc does not convert it.

What the TTC format is

TTC means TrueType Collection. It is a single file containing multiple related font faces, often regular, bold, italic, and bold italic, with shared tables that reduce duplication. Windows and macOS system font libraries, Microsoft Office installations, and commercial font packages commonly use TTC files.

A TTC can contain fonts with TrueType glyf outlines and, in some collections, OpenType fonts with CFF/PostScript outlines. Each member is an independent face, but software that lacks collection support may display only one face or reject the file.

What the OTF format is

OTF is the OpenType font format. A standalone OTF normally contains one font face and can include ligatures, alternate glyphs, multilingual shaping, kerning, and positioning data. Its outlines may be CFF/PostScript or TrueType; the .otf extension alone does not prove that the font uses CFF outlines.

Use individual OTF files when an application requires standalone OpenType fonts, when faces must be installed separately, or when a font package must be distributed without the original collection.

How to convert a TTC file

Using FontForge

1. Install FontForge from its official desktop distribution and open the .ttc file through File → Open.
2. When FontForge shows the collection members, select the required face. Open and export each additional face separately.
3. Choose File → Generate Fonts.
4. Select OpenType (CFF) if the destination specifically requires PostScript/CFF outlines, or select the OpenType TrueType option when retaining TrueType outlines is preferable.
5. Save the output with an .otf filename, then validate it in FontForge and test it in the target application.

FontForge is appropriate when the conversion must change TrueType outlines to CFF outlines. That change can affect hinting, rasterization, and validation, so retain the original TTC.

Extracting faces with FontTools

FontTools can split a collection into standalone OpenType sfnt files while preserving the existing outline technology:

from fontTools.ttLib import TTCollection

collection = TTCollection("family.ttc")
for index, font in enumerate(collection.fonts):
    font.save(f"family-{index}.otf")

Install the library with python -m pip install fonttools, save the code as a Python script, replace family.ttc with the source filename, and run it. The script writes one file for each collection member, but it does not convert TrueType outlines into CFF outlines. Use FontForge for that specific requirement.

Using the built-in converter

You can convert the file on 101convert.com without installing software: upload the TTC, choose OTF as the output, start the conversion, and download the generated standalone font. If the converter exposes individual collection members, select and convert each required face; a multi-face TTC cannot be represented as one ordinary standalone OTF without losing the other faces.

Quality and compatibility limits

Extraction normally preserves glyphs and OpenType layout data, but conversion can change naming records, hinting, table structure, or validation status. CFF conversion may render differently at small sizes, while retaining TrueType outlines usually preserves the source font’s screen-rendering behavior.

Test accented characters, scripts, ligatures, and alternate glyphs in the destination application. Install generated files under distinct names to prevent collisions with system fonts. A system-installed TTC is not automatically licensed for extraction, modification, or redistribution; check the font license before sharing the resulting OTF files.