FontBakery Check Report

If you think a check is flawed or have an idea for a check, please file an issue at https://github.com/fonttools/fontbakery/issues and remember to include a pointer to the repo and branch you're checking.

Summary

💥 ERROR	☠ FATAL	🔥 FAIL	⚠️ WARN	⏩ SKIP	ℹ️ INFO	✅ PASS
0	0	2	6	38	11	189
0%	0%	1%	2%	15%	4%	77%

Meaning of check results:

💥 An ERROR is something wrong with FontBakery itself, possibly a bug.
☠ A FATAL is an extremely severe issue that must be addressed immediately.
🔥 A FAIL is a problem with the font that must be fixed.
⚠️ A WARN is something that you should consider addressing.
ℹ️ An INFO result simply prints something useful. Typically stats.
✅ A PASS means the font looks good for the given checking routine.
⏩ And a SKIP happens when the check does not apply to the given font.

If you get ERRORs, please help us improve the tool by reporting them at our issue tracker.

(but other kinds of bug reports and/or feature requests are also always welcome, of course!)

FontBakery version: 0.12.10

Universal Profile Checks

⚠️⚠️⏩⏩⏩⏩⏩⏩ℹ️

Check accent of Lcaron, dcaron, lcaron, tcaron

Check ID: <FontBakeryCheck:com.google.fonts/check/alt_caron>

Check that glyph for U+0675 ARABIC LETTER HIGH HAMZA is not a mark.

Check ID: <FontBakeryCheck:com.google.fonts/check/arabic_high_hamza>

Check that Arabic spacing symbols U+FBB2–FBC1 aren't classified as marks.

Check ID: <FontBakeryCheck:com.google.fonts/check/arabic_spacing_symbols>

Ensure the font supports case swapping for all its glyphs.

Check ID: <FontBakeryCheck:com.google.fonts/check/case_mapping>

Does the font contain chws and vchw features?

Check ID: <FontBakeryCheck:com.google.fonts/check/cjk_chws_feature>

Check if each glyph has the recommended amount of contours.

Check ID: <FontBakeryCheck:com.google.fonts/check/contour_count>

Checking all files are in the same directory.

Check ID: <FontBakeryCheck:com.google.fonts/check/family/single_directory>

Each font in a family must have the same set of vertical metrics values.

Check ID: <FontBakeryCheck:com.google.fonts/check/family/vertical_metrics>

Checking OS/2 usWinAscent & usWinDescent.

Check ID: <FontBakeryCheck:com.google.fonts/check/family/win_ascent_and_descent>

Do we have the latest version of FontBakery installed?

Check ID: <FontBakeryCheck:com.google.fonts/check/fontbakery_version>

Ensure that the font can be rasterized by FreeType.

Check ID: <FontBakeryCheck:com.adobe.fonts/check/freetype_rasterizer>

Ensure no GPOS7 lookups are present.

Check ID: <FontBakeryCheck:com.google.fonts/check/gpos7>

EXPERIMENTAL CHECK - Since 2024/Jun/10
Ensure 'smcp' (small caps) lookups are defined before ligature lookups in the 'GSUB' table.

Check ID: <FontBakeryCheck:com.google.fonts/check/gsub/smallcaps_before_ligatures>

Detect any interpolation issues in the font.

Check ID: <FontBakeryCheck:com.google.fonts/check/interpolation_issues>

Check that legacy accents aren't used in composite glyphs.

Check ID: <FontBakeryCheck:com.google.fonts/check/legacy_accents>

Checking Vertical Metric Linegaps.

Check ID: <FontBakeryCheck:com.google.fonts/check/linegaps>

Font contains '.notdef' as its first glyph?

Check ID: <FontBakeryCheck:com.google.fonts/check/mandatory_glyphs>

Check math signs have the same width.

Check ID: <FontBakeryCheck:com.google.fonts/check/math_signs_width>

Name table records must not have trailing spaces.

Check ID: <FontBakeryCheck:com.google.fonts/check/name/trailing_spaces>

Checking OS/2 Metrics match hhea Metrics.

Check ID: <FontBakeryCheck:com.google.fonts/check/os2_metrics_match_hhea>

Checking with ots-sanitize.

Check ID: <FontBakeryCheck:com.google.fonts/check/ots>

Font contains all required tables?

Check ID: <FontBakeryCheck:com.google.fonts/check/required_tables>

Ensure indic fonts have the Indian Rupee Sign glyph.

Check ID: <FontBakeryCheck:com.google.fonts/check/rupee>

Font has the proper sfntVersion value?

Check ID: <FontBakeryCheck:com.adobe.fonts/check/sfnt_version>

Does the font contain a soft hyphen?

Check ID: <FontBakeryCheck:com.google.fonts/check/soft_hyphen>

Checking STAT table entries in static fonts.

Check ID: <FontBakeryCheck:com.google.fonts/check/STAT_in_statics>

Check correctness of STAT table strings

Check ID: <FontBakeryCheck:com.google.fonts/check/STAT_strings>

EXPERIMENTAL CHECK - Since 2024/Jun/04
Check tabular widths don't have kerning.

Check ID: <FontBakeryCheck:com.google.fonts/check/tabular_kerning>

Ensure component transforms do not perform scaling or rotation.

Check ID: <FontBakeryCheck:com.google.fonts/check/transformed_components>

EXPERIMENTAL CHECK - Since 2024/Jul/17
Checking that the typoAscender exceeds the yMax of the /Agrave.

Check ID: <FontBakeryCheck:com.arrowtype.fonts/check/typoascender_exceeds_Agrave>

Font contains unique glyph names?

Check ID: <FontBakeryCheck:com.google.fonts/check/unique_glyphnames>

Check font contains no unreachable glyphs

Check ID: <FontBakeryCheck:com.google.fonts/check/unreachable_glyphs>

⚠️ Fustat[wght].ttf

⚠️ WARN
The following glyphs could not be reached by codepoint or substitution rules:
```
- doubleverticalbarbelowar

- uni0307.i

- uni0308.narrow
```
[code: unreachable-glyphs]

Are there unwanted tables?

Check ID: <FontBakeryCheck:com.google.fonts/check/unwanted_tables>

Glyph names are all valid?

Check ID: <FontBakeryCheck:com.google.fonts/check/valid_glyphnames>

⚠️ Fustat[wght].ttf

⚠️ WARN
The following glyph names may be too long for some legacy systems which may expect a maximum 31-characters length limit: twodotshorizontalabove_tahabovear, twodotshorizontalbelow_tahabovear and twodotshorizontalcenter_tahabovear
[code: legacy-long-names]

Font has proper whitespace glyph names?

Check ID: <FontBakeryCheck:com.google.fonts/check/whitespace_glyphnames>

Font contains glyphs for whitespace characters?

Check ID: <FontBakeryCheck:com.google.fonts/check/whitespace_glyphs>

Whitespace glyphs have ink?

Check ID: <FontBakeryCheck:com.google.fonts/check/whitespace_ink>

Space and non-breaking space have the same width?

Check ID: <FontBakeryCheck:com.google.fonts/check/whitespace_widths>

Article Checks

⚠️

Validate size, and resolution of article images, and ensure article page has minimum length and includes visual assets.

Check ID: <FontBakeryCheck:com.google.fonts/check/article/images>

⚠️ Fustat[wght].ttf

⚠️ WARN
Family metadata at /home/runner/work/gf-dashboard/gf-dashboard/fonts/ofl/fustat does not have an article.
[code: lacks-article]

Metadata Checks

⚠️⏩⏩ℹ️

Does METADATA.pb copyright field contain broken links?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/broken_links>

METADATA.pb: Font styles are named canonically?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/canonical_style_names>

METADATA.pb: Check that font weight has a canonical value.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/canonical_weight_value>

Check samples can be rendered.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/can_render_samples>

Ensure METADATA.pb category field is valid.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/category>

Check if category on METADATA.pb matches what can be inferred from the family name.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/category_hints>

Validate VF axes match the ones declared on METADATA.pb.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/consistent_axis_enumeration>

METADATA.pb: Check URL on copyright string is the same as in repository_url field.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/consistent_repo_urls>

METADATA.pb: Copyright notice is the same in all fonts?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/copyright>

EXPERIMENTAL CHECK - Since 2024/May/22
Validate 'date_added' field on METADATA.pb.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/date_added>

METADATA.pb: Designers are listed correctly on the Google Fonts catalog?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/designer_profiles>

Multiple values in font designer field in METADATA.pb must be separated by commas.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/designer_values>

At least one designer is declared in METADATA.pb

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/empty_designer>

Ensure METADATA.pb does not use escaped strings.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/escaped_strings>

Check font family directory name.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/family_directory_name>

Check that METADATA.pb family values are all the same.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/familyname>

METADATA.pb: Font filenames match font.filename entries?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/filenames>

Validate METADATA.pb axes values are within gf_axisregistry bounds.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/gf_axisregistry_bounds>

Validate METADATA.pb axes tags are defined in gf_axisregistry.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/gf_axisregistry_valid_tags>

Ensure there is a regular style defined in METADATA.pb.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/has_regular>

Check METADATA.pb includes production subsets.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/includes_production_subsets>

Check METADATA.pb file only contains a single CJK subset.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/single_cjk_subset>

METADATA.pb license is "APACHE2", "UFL" or "OFL"?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/license>

METADATA.pb font.filename and font.post_script_name fields have equivalent values?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/match_filename_postscript>

METADATA.pb font.full_name and font.post_script_name fields have equivalent values ?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/match_fullname_postscript>

METADATA.pb: Check font name is the same as family name.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/match_name_familyname>

METADATA.pb weight matches postScriptName for static fonts.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/match_weight_postscript>

METADATA.pb should contain at least "menu" and "latin" subsets.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/menu_and_latin>

METADATA.pb: Validate family.minisite_url field.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/minisite_url>

METADATA.pb font.name and font.full_name fields match the values declared on the name table?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/nameid/family_and_full_names>

METADATA.pb font.name value should be same as the family name declared on the name table.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/nameid/font_name>

Checks METADATA.pb font.post_script_name matches postscript name declared on the name table.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/nameid/post_script_name>

Check METADATA.pb font weights are correct.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/os2_weightclass>

Check METADATA.pb parse correctly.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/parses>

METADATA.pb: Check for primary_script

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/primary_script>

METADATA.pb: Regular should be 400.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/regular_is_400>

Copyright notice on METADATA.pb should not contain 'Reserved Font Name'.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/reserved_font_name>

METADATA.pb subsets should be alphabetically ordered.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/subsets_order>

Ensure METADATA.pb lists all font binaries.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/undeclared_fonts>

METADATA.pb: check if fonts field only has unique "full_name" values.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/unique_full_name_values>

METADATA.pb: check if fonts field only contains unique style:weight pairs.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/unique_weight_style_pairs>

Check for codepoints not covered by METADATA subsets.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/unreachable_subsetting>

⚠️ Fustat[wght].ttf

⚠️ WARN
The following codepoints supported by the font are not covered by any subsets defined in the font's metadata file, and will never be served. You can solve this by either manually adding additional subset declarations to METADATA.pb, or by editing the glyphset definitions.
- U+02C7 CARON: try adding one of: yi, canadian-aboriginal, tifinagh
- U+02D8 BREVE: try adding one of: yi, canadian-aboriginal
- U+02D9 DOT ABOVE: try adding one of: yi, canadian-aboriginal
- U+02DB OGONEK: try adding one of: yi, canadian-aboriginal
- U+02DD DOUBLE ACUTE ACCENT: not included in any glyphset definition
- U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: coptic, tifinagh, cherokee, math
- U+0306 COMBINING BREVE: try adding one of: tifinagh, old-permic
- U+0307 COMBINING DOT ABOVE: try adding one of: canadian-aboriginal, math, coptic, syriac, old-permic, malayalam, tifinagh, tai-le
- U+030A COMBINING RING ABOVE: try adding syriac
- U+030B COMBINING DOUBLE ACUTE ACCENT: try adding one of: cherokee, osage
- U+030C COMBINING CARON: try adding one of: tai-le, cherokee
- U+0312 COMBINING TURNED COMMA ABOVE: not included in any glyphset definition
- U+0326 COMBINING COMMA BELOW: not included in any glyphset definition
- U+0327 COMBINING CEDILLA: not included in any glyphset definition
- U+0328 COMBINING OGONEK: not included in any glyphset definition
- U+0335 COMBINING SHORT STROKE OVERLAY: not included in any glyphset definition
- U+0337 COMBINING SHORT SOLIDUS OVERLAY: not included in any glyphset definition
- U+0338 COMBINING LONG SOLIDUS OVERLAY: not included in any glyphset definition
- U+2021 DOUBLE DAGGER: try adding adlam
- U+2030 PER MILLE SIGN: try adding adlam
- U+2116 NUMERO SIGN: try adding cyrillic
- U+212E ESTIMATED SYMBOL: not included in any glyphset definition
- U+2153 VULGAR FRACTION ONE THIRD: not included in any glyphset definition
- U+2154 VULGAR FRACTION TWO THIRDS: not included in any glyphset definition
- U+215B VULGAR FRACTION ONE EIGHTH: not included in any glyphset definition
- U+215C VULGAR FRACTION THREE EIGHTHS: not included in any glyphset definition
- U+215D VULGAR FRACTION FIVE EIGHTHS: not included in any glyphset definition
- U+215E VULGAR FRACTION SEVEN EIGHTHS: not included in any glyphset definition
- U+2190 LEFTWARDS ARROW: try adding one of: symbols, math
- U+2192 RIGHTWARDS ARROW: try adding one of: symbols, math
- U+2196 NORTH WEST ARROW: try adding one of: symbols, math
- U+2197 NORTH EAST ARROW: try adding one of: symbols, math
- U+2198 SOUTH EAST ARROW: try adding one of: symbols, math
- U+2199 SOUTH WEST ARROW: try adding one of: symbols, math
- U+2248 ALMOST EQUAL TO: try adding math
- U+2260 NOT EQUAL TO: try adding math
- U+2264 LESS-THAN OR EQUAL TO: try adding math
- U+2265 GREATER-THAN OR EQUAL TO: try adding math
- U+2460 CIRCLED DIGIT ONE: try adding one of: symbols, yi, mongolian
- U+2461 CIRCLED DIGIT TWO: try adding one of: symbols, yi, mongolian
- U+2462 CIRCLED DIGIT THREE: try adding one of: symbols, yi, mongolian
- U+2463 CIRCLED DIGIT FOUR: try adding one of: symbols, yi, mongolian
- U+2464 CIRCLED DIGIT FIVE: try adding one of: symbols, yi, mongolian
- U+2465 CIRCLED DIGIT SIX: try adding one of: symbols, yi, mongolian
- U+2466 CIRCLED DIGIT SEVEN: try adding one of: symbols, yi, mongolian
- U+2467 CIRCLED DIGIT EIGHT: try adding one of: symbols, yi, mongolian
- U+2468 CIRCLED DIGIT NINE: try adding one of: symbols, yi, mongolian
- U+24EA CIRCLED DIGIT ZERO: try adding symbols
- U+24FF NEGATIVE CIRCLED DIGIT ZERO: try adding symbols
- U+25CC DOTTED CIRCLE: try adding one of: music, phags-pa, zanabazar-square, rejang, devanagari, adlam, oriya, manichaean, batak, dogra, tai-viet, javanese, tai-le, khudawadi, miao, sogdian, sinhala, limbu, modi, new-tai-lue, ahom, tibetan, psalter-pahlavi, hebrew, syloti-nagri, tagalog, symbols, wancho, balinese, malayalam, khmer, armenian, math, hanifi-rohingya, tirhuta, pahawh-hmong, tagbanwa, canadian-aboriginal, elbasan, kayah-li, bhaiksuki, mahajani, saurashtra, telugu, brahmi, kaithi, yi, warang-citi, coptic, soyombo, gujarati, grantha, myanmar, tai-tham, takri, marchen, mende-kikakui, nko, mandaic, thaana, newa, hanunoo, kannada, gurmukhi, siddham, masaram-gondi, buginese, osage, caucasian-albanian, kharoshthi, khojki, tifinagh, duployan, mongolian, lepcha, chakma, old-permic, bengali, gunjala-gondi, meetei-mayek, bassa-vah, lao, sundanese, buhid, tamil, thai, syriac, cham, sharada
- U+26AA MEDIUM WHITE CIRCLE: try adding symbols
- U+26AB MEDIUM BLACK CIRCLE: try adding symbols
- U+2776 DINGBAT NEGATIVE CIRCLED DIGIT ONE: try adding symbols
- U+2777 DINGBAT NEGATIVE CIRCLED DIGIT TWO: try adding symbols
- U+2778 DINGBAT NEGATIVE CIRCLED DIGIT THREE: try adding symbols
- U+2779 DINGBAT NEGATIVE CIRCLED DIGIT FOUR: try adding symbols
- U+277A DINGBAT NEGATIVE CIRCLED DIGIT FIVE: try adding symbols
- U+277B DINGBAT NEGATIVE CIRCLED DIGIT SIX: try adding symbols
- U+277C DINGBAT NEGATIVE CIRCLED DIGIT SEVEN: try adding symbols
- U+277D DINGBAT NEGATIVE CIRCLED DIGIT EIGHT: try adding symbols
- U+277E DINGBAT NEGATIVE CIRCLED DIGIT NINE: try adding symbols
- U+2B1B BLACK LARGE SQUARE: try adding symbols
- U+2B1C WHITE LARGE SQUARE: try adding symbols
- U+FB01 LATIN SMALL LIGATURE FI: not included in any glyphset definition
- U+FB02 LATIN SMALL LIGATURE FL: not included in any glyphset definition
Or you can add the above codepoints to one of the subsets supported by the font: arabic, latin, latin-ext, menu
[code: unreachable-subsetting]

Check for METADATA subsets with zero support.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/unsupported_subsets>

METADATA.pb font.filename field contains font name in right format?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/valid_filename_values>

METADATA.pb font.full_name field contains font name in right format?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/valid_full_name_values>

Check name ID 25 to end with "Italic" for Italic VFs.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/valid_nameid25>

METADATA.pb font.post_script_name field contains font name in right format?

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/valid_post_script_name_values>

Glyphset Checks

🔥

Shapes languages in all GF glyphsets.

Check ID: <FontBakeryCheck:com.google.fonts/check/glyphsets/shape_languages>

🔥 Fustat[wght].ttf

⚠️ WARN
GF_Arabic_Plus glyphset:

Language WARN messages

ms_Arab (Malay (Arabic)) No exemplar glyphs were defined for language Malay (Arabic)

[code: warning-language-shaping]
🔥 FAIL
GF_Arabic_Core glyphset:

Language FAIL messages

fa_Arab (Persian) in Farsi, "saria heh" should use a small yeh above, not hamza; both buffers returned uni0654=0@272,96+0

[code: failed-language-shaping]

Language	WARN messages
ms_Arab (Malay (Arabic))	No exemplar glyphs were defined for language Malay (Arabic)

Language	FAIL messages
fa_Arab (Persian)	in Farsi, "saria heh" should use a small yeh above, not hamza; both buffers returned uni0654=0@272,96+0

Description Checks

🔥⚠️ℹ️ℹ️

Does DESCRIPTION file contain broken links?

Check ID: <FontBakeryCheck:com.google.fonts/check/description/broken_links>

DESCRIPTION.en_us.html should end in a linebreak.

Check ID: <FontBakeryCheck:com.google.fonts/check/description/eof_linebreak>

⚠️ METADATA.pb

⚠️ WARN
The last characther on DESCRIPTION.en_us.html is not a line-break. Please add it.
[code: missing-eof-linebreak]

On a family update, the DESCRIPTION.en_us.html file should ideally also be updated.

Check ID: <FontBakeryCheck:com.google.fonts/check/description/family_update>

Does DESCRIPTION file contain a upstream Git repo URL?

Check ID: <FontBakeryCheck:com.google.fonts/check/description/git_url>

Check the description doesn't contain unsupported html elements

Check ID: <FontBakeryCheck:com.google.fonts/check/description/has_unsupported_elements>

DESCRIPTION.en_us.html must have more than 200 bytes.

Check ID: <FontBakeryCheck:com.google.fonts/check/description/min_length>

🔥 METADATA.pb

🔥 FAIL
DESCRIPTION.en_us.html must have size larger than 200 bytes.
[code: too-short]

Check for presence of an ARTICLE.en_us.html file

Check ID: <FontBakeryCheck:com.google.fonts/check/description/has_article>

URLs on DESCRIPTION file must not display http(s) prefix.

Check ID: <FontBakeryCheck:com.google.fonts/check/description/urls>

Is this a proper HTML snippet?

Check ID: <FontBakeryCheck:com.google.fonts/check/description/valid_html>

Font File Checks

⚠️⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️

Are there unwanted Apple tables?

Check ID: <FontBakeryCheck:com.google.fonts/check/aat>

Checking file is named canonically.

Check ID: <FontBakeryCheck:com.google.fonts/check/canonical_filename>

Does the font contain less than 150 CJK characters?

Check ID: <FontBakeryCheck:com.google.fonts/check/cjk_not_enough_glyphs>

Check font follows the Google Fonts CJK vertical metric schema

Check ID: <FontBakeryCheck:com.google.fonts/check/cjk_vertical_metrics>

Check if the vertical metrics of a CJK family are similar to the same family hosted on Google Fonts.

Check ID: <FontBakeryCheck:com.google.fonts/check/cjk_vertical_metrics_regressions>

Color layers should have a minimum brightness

Check ID: <FontBakeryCheck:com.google.fonts/check/color_cpal_brightness>

Check font has the expected color font tables.

Check ID: <FontBakeryCheck:com.google.fonts/check/colorfont_tables>

Put an empty glyph on GID 1 right after the .notdef glyph for COLRv0 fonts.

Check ID: <FontBakeryCheck:com.google.fonts/check/empty_glyph_on_gid1_for_colrv0>

EPAR table present in font?

Check ID: <FontBakeryCheck:com.google.fonts/check/epar>

Ensure files are not too large.

Check ID: <FontBakeryCheck:com.google.fonts/check/file_size>

Copyright notices match canonical pattern in fonts

Check ID: <FontBakeryCheck:com.google.fonts/check/font_copyright>

Check font names are correct

Check ID: <FontBakeryCheck:com.google.fonts/check/font_names>

Checking OS/2 fsType does not impose restrictions.

Check ID: <FontBakeryCheck:com.google.fonts/check/fstype>

Check variable font instances

Check ID: <FontBakeryCheck:com.google.fonts/check/fvar_instances>

All name entries referenced by fvar instances exist on the name table?

Check ID: <FontBakeryCheck:com.google.fonts/check/fvar_name_entries>

Is the Grid-fitting and Scan-conversion Procedure ('gasp') table set to optimize rendering?

Check ID: <FontBakeryCheck:com.google.fonts/check/gasp>

Validate defaults on fvar table match registered fallback names in GFAxisRegistry.

Check ID: <FontBakeryCheck:com.google.fonts/check/gf_axisregistry/fvar_axis_defaults>

Check glyphs do not have components which are themselves components.

Check ID: <FontBakeryCheck:com.google.fonts/check/glyf_nested_components>

Check Google Fonts glyph coverage.

Check ID: <FontBakeryCheck:com.google.fonts/check/glyph_coverage>

Font has ttfautohint params?

Check ID: <FontBakeryCheck:com.google.fonts/check/has_ttfautohint_params>

Show hinting filesize impact.

Check ID: <FontBakeryCheck:com.google.fonts/check/hinting_impact>

PPEM must be an integer on hinted fonts.

Check ID: <FontBakeryCheck:com.google.fonts/check/integer_ppem_if_hinted>

Is there kerning info for non-ligated sequences?

Check ID: <FontBakeryCheck:com.google.fonts/check/kerning_for_non_ligated_sequences>

⚠️ Fustat[wght].ttf

⚠️ WARN

GPOS table lacks kerning info for the following non-ligated sequences:

- uni0644.init + uni0644.medi

- uni0644.medi + uni0651

- uni0651 + uni0670

- uni066E.init + uni062D.fina

- uni066E.init + uni062D.medi

- uni0670 + uni0647.fina

- uni0670 + uni06C1.fina

[code: lacks-kern-info]

Are there caret positions declared for every ligature?

Check ID: <FontBakeryCheck:com.google.fonts/check/ligature_carets>

Ensure variable fonts include an avar table.

Check ID: <FontBakeryCheck:com.google.fonts/check/mandatory_avar_table>

Ensure fonts have ScriptLangTags declared on the 'meta' table.

Check ID: <FontBakeryCheck:com.google.fonts/check/meta/script_lang_tags>

Check small caps glyphs are available.

Check ID: <FontBakeryCheck:com.google.fonts/check/missing_small_caps_glyphs>

Are there non-ASCII characters in ASCII-only NAME table entries?

Check ID: <FontBakeryCheck:com.google.fonts/check/name/ascii_only_entries>

Description strings in the name table must not exceed 200 characters.

Check ID: <FontBakeryCheck:com.google.fonts/check/name/description_max_length>

Make sure family name does not begin with a digit.

Check ID: <FontBakeryCheck:com.google.fonts/check/name/familyname_first_char>

Font has all mandatory 'name' table entries?

Check ID: <FontBakeryCheck:com.google.fonts/check/name/mandatory_entries>

Version format is correct in 'name' table?

Check ID: <FontBakeryCheck:com.google.fonts/check/name/version_format>

Ensure fonts do not contain any pre-production tables.

Check ID: <FontBakeryCheck:com.google.fonts/check/no_debugging_tables>

Font has old ttfautohint applied?

Check ID: <FontBakeryCheck:com.google.fonts/check/old_ttfautohint>

OS/2.fsSelection bit 7 (USE_TYPO_METRICS) is set in all fonts.

Check ID: <FontBakeryCheck:com.google.fonts/check/os2/use_typo_metrics>

Check font can render its own name.

Check ID: <FontBakeryCheck:com.google.fonts/check/render_own_name>

Checking direction of slnt axis angles

Check ID: <FontBakeryCheck:com.google.fonts/check/slant_direction>

Font enables smart dropout control in "prep" table instructions?

Check ID: <FontBakeryCheck:com.google.fonts/check/smart_dropout>

Check axis ordering on the STAT table.

Check ID: <FontBakeryCheck:com.google.fonts/check/STAT/axis_order>

Validate STAT particle names and values match the fallback names in GFAxisRegistry.

Check ID: <FontBakeryCheck:com.google.fonts/check/STAT/gf_axisregistry>

Ensure Stylistic Sets have description.

Check ID: <FontBakeryCheck:com.google.fonts/check/stylisticset_description>

Stricter unitsPerEm criteria for Google Fonts.

Check ID: <FontBakeryCheck:com.google.fonts/check/unitsperem_strict>

Check the OS/2 usWeightClass is appropriate for the font's best SubFamily name.

Check ID: <FontBakeryCheck:com.google.fonts/check/usweightclass>

The variable font 'wght' (Weight) axis coordinate must be 700 on the 'Bold' instance.

Check ID: <FontBakeryCheck:com.google.fonts/check/varfont/bold_wght_coord>

Ensure that all variable font files have the same set of axes and axis ranges.

Check ID: <FontBakeryCheck:com.google.fonts/check/varfont/consistent_axes>

Ensure VFs with duplexed axes do not vary horizontal advance.

Check ID: <FontBakeryCheck:com.google.fonts/check/varfont/duplexed_axis_reflow>

Check variable font instances don't have duplicate names

Check ID: <FontBakeryCheck:com.google.fonts/check/varfont_duplicate_instance_names>

Check a static ttf can be generated from a variable font.

Check ID: <FontBakeryCheck:com.google.fonts/check/varfont/generate_static>

EXPERIMENTAL CHECK - Since 2024/Mar/27
Ensure the font's instances are in the correct order.

Check ID: <FontBakeryCheck:com.google.fonts/check/varfont/instances_in_order>

Check that variable fonts have an HVAR table.

Check ID: <FontBakeryCheck:com.google.fonts/check/varfont/has_HVAR>

Ensure VFs do not contain the ital axis.

Check ID: <FontBakeryCheck:com.google.fonts/check/varfont/unsupported_axes>

Checking OS/2 achVendID.

Check ID: <FontBakeryCheck:com.google.fonts/check/vendor_id>

Check font follows the Google Fonts vertical metric schema

Check ID: <FontBakeryCheck:com.google.fonts/check/vertical_metrics>

Check if the vertical metrics of a family are similar to the same family hosted on Google Fonts.

Check ID: <FontBakeryCheck:com.google.fonts/check/vertical_metrics_regressions>

There must not be VTT Talk sources in the font.

Check ID: <FontBakeryCheck:com.google.fonts/check/vttclean>

Summary

Universal Profile Checks

Check accent of Lcaron, dcaron, lcaron, tcaron

Check that glyph for U+0675 ARABIC LETTER HIGH HAMZA is not a mark.

Check that Arabic spacing symbols U+FBB2–FBC1 aren't classified as marks.

Ensure the font supports case swapping for all its glyphs.

Does the font contain chws and vchw features?

Check if each glyph has the recommended amount of contours.

Checking all files are in the same directory.

Each font in a family must have the same set of vertical metrics values.

Checking OS/2 usWinAscent & usWinDescent.

Do we have the latest version of FontBakery installed?

Ensure that the font can be rasterized by FreeType.

Ensure no GPOS7 lookups are present.

EXPERIMENTAL CHECK - Since 2024/Jun/10 Ensure 'smcp' (small caps) lookups are defined before ligature lookups in the 'GSUB' table.

Detect any interpolation issues in the font.

Check that legacy accents aren't used in composite glyphs.

Checking Vertical Metric Linegaps.

Font contains '.notdef' as its first glyph?

Check math signs have the same width.

Name table records must not have trailing spaces.

Checking OS/2 Metrics match hhea Metrics.

Checking with ots-sanitize.

Font contains all required tables?

Ensure indic fonts have the Indian Rupee Sign glyph.

Font has the proper sfntVersion value?

Does the font contain a soft hyphen?

Checking STAT table entries in static fonts.

Check correctness of STAT table strings

EXPERIMENTAL CHECK - Since 2024/Jun/04 Check tabular widths don't have kerning.

Ensure component transforms do not perform scaling or rotation.

EXPERIMENTAL CHECK - Since 2024/Jul/17 Checking that the typoAscender exceeds the yMax of the /Agrave.

Font contains unique glyph names?

Check font contains no unreachable glyphs

Are there unwanted tables?

Glyph names are all valid?

Font has **proper** whitespace glyph names?

Font contains glyphs for whitespace characters?

Whitespace glyphs have ink?

Space and non-breaking space have the same width?

Article Checks

Validate size, and resolution of article images, and ensure article page has minimum length and includes visual assets.

Metadata Checks

Does METADATA.pb copyright field contain broken links?

METADATA.pb: Font styles are named canonically?

METADATA.pb: Check that font weight has a canonical value.

Check samples can be rendered.

Ensure METADATA.pb category field is valid.

Check if category on METADATA.pb matches what can be inferred from the family name.

Validate VF axes match the ones declared on METADATA.pb.

METADATA.pb: Check URL on copyright string is the same as in repository_url field.

METADATA.pb: Copyright notice is the same in all fonts?

EXPERIMENTAL CHECK - Since 2024/May/22 Validate 'date_added' field on METADATA.pb.

METADATA.pb: Designers are listed correctly on the Google Fonts catalog?

Multiple values in font designer field in METADATA.pb must be separated by commas.

At least one designer is declared in METADATA.pb

Ensure METADATA.pb does not use escaped strings.

Check font family directory name.

Check that METADATA.pb family values are all the same.

METADATA.pb: Font filenames match font.filename entries?

Validate METADATA.pb axes values are within gf_axisregistry bounds.

Validate METADATA.pb axes tags are defined in gf_axisregistry.

Ensure there is a regular style defined in METADATA.pb.

Check METADATA.pb includes production subsets.

Check METADATA.pb file only contains a single CJK subset.

METADATA.pb license is "APACHE2", "UFL" or "OFL"?

METADATA.pb font.filename and font.post_script_name fields have equivalent values?

METADATA.pb font.full_name and font.post_script_name fields have equivalent values ?

METADATA.pb: Check font name is the same as family name.

METADATA.pb weight matches postScriptName for static fonts.

METADATA.pb should contain at least "menu" and "latin" subsets.

METADATA.pb: Validate family.minisite_url field.

METADATA.pb font.name and font.full_name fields match the values declared on the name table?

METADATA.pb font.name value should be same as the family name declared on the name table.

Checks METADATA.pb font.post_script_name matches postscript name declared on the name table.

Check METADATA.pb font weights are correct.

Check METADATA.pb parse correctly.

METADATA.pb: Check for primary_script

METADATA.pb: Regular should be 400.

Copyright notice on METADATA.pb should not contain 'Reserved Font Name'.

EXPERIMENTAL CHECK - Since 2024/Jun/10
Ensure 'smcp' (small caps) lookups are defined before ligature lookups in the 'GSUB' table.

EXPERIMENTAL CHECK - Since 2024/Jun/04
Check tabular widths don't have kerning.

EXPERIMENTAL CHECK - Since 2024/Jul/17
Checking that the typoAscender exceeds the yMax of the /Agrave.

Font has proper whitespace glyph names?

EXPERIMENTAL CHECK - Since 2024/May/22
Validate 'date_added' field on METADATA.pb.