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.
| indexinteger | familystring | stylestring | postScriptNamestring | glyphsinteger |
|---|---|---|---|---|
| 0 | Novus Grotesk P7 Collection | Regular | NovusGroteskP7Collection-Regular | 69 |
| 1 | Novus Grotesk P7 Collection | Black | NovusGroteskP7Collection-Black | 69 |
| 2 | Novus Grotesk P7 Collection | Condensed | NovusGroteskP7Collection-Condensed | 69 |
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 Testaroo 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.
Related files
- otfOTF: Web Container Source, CFF (Type 2) OutlinesThe uncompressed CFF (Type 2) source for this container set. Every WOFF and WOFF2 file in the group is packed from exactly these bytes, so a compression comparison is measuring the container and nothing else. Original typeface, free to use.
- ttfTTF, Intentionally Corrupt: Wrong glyf Table-Directory ChecksumAn intentionally corrupt font whose glyf table data is perfectly fine but whose recorded checksum in the table directory is wrong. The complement to the head fixture: this one catches tools that verify per-table checksums, and its glyphs still draw, so the damage is invisible without a real integrity check.
- ttfTTF, Intentionally Corrupt: Wrong head.checkSumAdjustmentAn intentionally corrupt font: four bytes of head.checkSumAdjustment overwritten with 0xDEADBEEF and nothing else touched. It still renders, because browsers and operating systems do not verify the field, which is precisely why this is a useful fixture for validators, signing tools, and font-integrity checks that claim they do.
- ttfTTF, Subset: DigitsThe full face subset to U+0030-U+0039 (digits only): a numeric-display cut, the shape a dashboard font ends up. Layout features are kept, so lookups whose glyphs were removed are the ones you can watch disappear. Original typeface, free to use.
- ttfTTF, Subset: HeadlineThe full face subset to the 8 codepoints of the string NOVUS 07: the extreme case a headline-only web font gets cut down to. Layout features are kept, so lookups whose glyphs were removed are the ones you can watch disappear. Original typeface, free to use.
- ttfTTF, Subset: Latin BasicThe full face subset to U+0020-U+007E (printable ASCII): the range a Latin-only page actually needs. Layout features are kept, so lookups whose glyphs were removed are the ones you can watch disappear. Original typeface, free to use.
