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ttc17.7 KB

TTC — Three-Face Collection with Shared Tables

A TrueType Collection holding three faces of one family with identical tables stored once and referenced by offset from each face's table directory. For testing face-index selection, collection-aware loaders, and extractors that must not assume each face owns its tables. Original typeface, free to use.

Preview — schema + first 3 rowsttc
indexintegerfamilystringstylestringpostScriptNamestringglyphsinteger
0Novus Grotesk P7 CollectionRegularNovusGroteskP7Collection-Regular69
1Novus Grotesk P7 CollectionBlackNovusGroteskP7Collection-Black69
2Novus Grotesk P7 CollectionCondensedNovusGroteskP7Collection-Condensed69
The three faces inside the collection container, in face-index order.

Specifications

Family
Novus Grotesk P7 Collection
Units Per Em
1000
Cap Height
700
X Height
500
Wave
p7
Seed
20260807
Built With
fontTools 4.x
Determinism
head.created/head.modified pinned to 2026-01-01T00:00:00Z, recalcTimestamp off; outlines are parametric, colour material is seeded
Usage Rights
original artwork, free for any use
Faces
3
Styles
Regular, Black, Condensed
Share Tables
true
File Bytes
18128
Unshared Twin Bytes
19012
Saved
884 bytes versus the unshared twin
Shared Tables
cmap, name-independent tables reused across faces by offset

Testing contract

Expected to pass
Scenario
Open the collection, enumerate the faces by index, and extract face 1 as a standalone font.
Expected result
Three faces are reported with distinct PostScript names; the file is 18128 bytes against the unshared twin's 19012, and extracting a face must copy the shared tables rather than slicing the file.

What is a .ttc file?

A TrueType Collection (.ttc) is a single file that bundles several related fonts, sharing common tables (like glyph outlines) to save space. It is used to ship font families or CJK fonts with many variants in one file. A font index selects which face inside the collection to use.

How to use this file

Use an example .ttc to test collection-aware font loaders, font-index selection, and tools that split a collection back into individual TTF/OTF files.

How to use this file for testing

“TTC — Three-Face Collection with Shared Tables” is a deterministic Novus Examples fixture for Conversion testing, Performance testing, Metadata testing. The same content exported across many formats and linked as a group, so you can convert one and diff against the expected twin.

Documented properties for this file: seed 20260807. Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.

Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.

Font fixtures carry a small documented glyph set across the common wrappers. Test font loaders, subsetting, and @font-face; the specimen preview renders the glyphs the face actually maps.

Generated by generation/fonts_p7.py. Free for any use, no attribution required — license.