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
1	0	2	9	94	7	138
0%	0%	1%	4%	37%	3%	55%

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>

🔥 NotoKufiArabic[wght].ttf

🔥 FAIL
The arabic letter high hamza (U+0675) should have roughly the same size the arabic letter hamza (U+0621), but a different glyph outline area was detected.
[code: glyph-area]

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>

⚠️ NotoKufiArabic[wght].ttf

⚠️ WARN

Interpolation issues were found in the font:

- Contour 0 point 54 in glyph 'uni062D' has a kink between location wght=100 and location wght=699

- Contour 0 point 12 in glyph 'uni062D.fina' has a kink between location wght=400 and location wght=100

- Contour 0 point 12 in glyph 'uni062D.fina' has a kink between location wght=100 and location wght=699

[code: 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>

Checking with fontTools.ttx

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

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>

⚠️ NotoKufiArabic[wght].ttf

⚠️ WARN
The following glyphs could not be reached by codepoint or substitution rules:
```
- uni06F7.mark
```
[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>

⚠️ NotoKufiArabic[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, twodotshorizontalabovear.diagonal, 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>

⚠️ NotoKufiArabic[wght].ttf

⚠️ WARN
Family metadata at fonts/NotoKufiArabic/googlefonts/variable-ttf does not have an article.
[code: lacks-article]

Metadata Checks

⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩

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>

⚠️ NotoKufiArabic[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+02D8 BREVE: try adding one of: canadian-aboriginal, yi
- U+02D9 DOT ABOVE: try adding one of: canadian-aboriginal, yi
- U+02DB OGONEK: try adding one of: canadian-aboriginal, yi
- U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: tifinagh, cherokee, coptic, math
- U+0306 COMBINING BREVE: try adding one of: tifinagh, old-permic
- U+0307 COMBINING DOT ABOVE: try adding one of: math, malayalam, canadian-aboriginal, duployan, old-permic, tifinagh, todhri, hebrew, tai-le, coptic, syriac
- U+030A COMBINING RING ABOVE: try adding one of: duployan, 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+0326 COMBINING COMMA BELOW: try adding math
- U+0327 COMBINING CEDILLA: try adding math
- U+0328 COMBINING OGONEK: not included in any glyphset definition
- U+08E2 ARABIC DISPUTED END OF AYAH: not included in any glyphset definition
- U+200F RIGHT-TO-LEFT MARK: try adding one of: thaana, hebrew, phags-pa, nko, syriac
- U+202F NARROW NO-BREAK SPACE: try adding one of: phags-pa, yi, mongolian
- U+221A SQUARE ROOT: try adding math
- U+25CC DOTTED CIRCLE: try adding one of: ahom, thaana, thai, balinese, saurashtra, dogra, tifinagh, brahmi, hanifi-rohingya, hanunoo, javanese, psalter-pahlavi, syriac, batak, math, osage, old-permic, tibetan, tai-tham, caucasian-albanian, tagalog, khojki, zanabazar-square, mandaic, sinhala, kannada, masaram-gondi, buginese, modi, khudawadi, telugu, sharada, tai-le, chakma, khmer, tamil, elbasan, devanagari, takri, miao, bengali, warang-citi, mende-kikakui, nko, kayah-li, syloti-nagri, music, mongolian, manichaean, limbu, gurmukhi, duployan, yi, armenian, pahawh-hmong, siddham, soyombo, marchen, lepcha, tirhuta, kaithi, tai-viet, oriya, kharoshthi, malayalam, canadian-aboriginal, gunjala-gondi, adlam, phags-pa, sundanese, tagbanwa, newa, wancho, buhid, hebrew, myanmar, symbols, new-tai-lue, rejang, mahajani, coptic, bassa-vah, grantha, meetei-mayek, lao, cham, bhaiksuki, gujarati, sogdian
Or you can add the above codepoints to one of the subsets supported by the font: arabic, latin, latin-ext
[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>

💥 NotoKufiArabic[wght].ttf

💥 ERROR

Failed with AttributeError: 'NoneType' object has no attribute 'get'

  File "/home/runner/work/arabic/arabic/venv/lib/python3.11/site-packages/fontbakery/checkrunner.py", line 213, in _run_check
    subresults = list(subresults)
                 ^^^^^^^^^^^^^^^^
  File "/home/runner/work/arabic/arabic/venv/lib/python3.11/site-packages/fontbakery/checks/googlefonts/glyphset.py", line 145, in com_google_fonts_check_glyphsets_shape_languages
    reporter = shaperglot_checker.check(shaperglot_languages[language_code])
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/work/arabic/arabic/venv/lib/python3.11/site-packages/shaperglot/checker.py", line 53, in check
    for check_object in self.lang.get("shaperglot_checks", []):
                        ^^^^^^^^^^^^^

[code: failed-check]

Description Checks

🔥⏩⏩⏩⏩⏩⏩⏩⏩

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>

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>

Check for presence of an ARTICLE.en_us.html file

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

🔥 NotoKufiArabic[wght].ttf

🔥 FAIL
This is a Noto font but it lacks an ARTICLE.en_us.html file.
[code: missing-article]
🔥 FAIL
This is a Noto font but it lacks a DESCRIPTION.en_us.html file.
[code: missing-description]

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>

Shaping Checks

⚠️⏩⏩⏩

Check that texts shape as per expectation

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

Check that no forbidden glyphs are found while shaping

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

Check that no collisions are found while shaping

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

Ensure dotted circle glyph is present and can attach marks.

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

Ensure soft_dotted characters lose their dot when combined with marks that replace the dot.

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

⚠️ NotoKufiArabic[wght].ttf

⚠️ WARN
The dot of soft dotted characters used in orthographies must disappear in the following strings: į̀ į́ į̂ į̃ į̄ į̌

The dot of soft dotted characters should disappear in other cases, for example: į̆ į̇ į̈ į̊ į̋ į̦̀ į̦́ į̦̂ į̦̃ į̦̄ į̦̆ į̦̇ į̦̈ į̦̊ į̦̋ į̦̌ į̧̀ į̧́ į̧̂ į̧̃

Your font fully covers the following languages that require the soft-dotted feature: Dutch (Latn, 31,709,104 speakers), Lithuanian (Latn, 2,357,094 speakers).

Your font does not cover the following languages that require the soft-dotted feature: Dan (Latn, 1,099,244 speakers), Aghem (Latn, 38,843 speakers), South Central Banda (Latn, 244,000 speakers), Southern Kisi (Latn, 360,000 speakers), Han (Latn, 6 speakers), Basaa (Latn, 332,940 speakers), Ukrainian (Cyrl, 29,273,587 speakers), Ngbaka (Latn, 1,020,000 speakers), Ekpeye (Latn, 226,000 speakers), Heiltsuk (Latn, 300 speakers), Avokaya (Latn, 100,000 speakers), Ma’di (Latn, 584,000 speakers), Kpelle, Guinea (Latn, 622,000 speakers), Ebira (Latn, 2,200,000 speakers), Vute (Latn, 21,000 speakers), Bafut (Latn, 158,146 speakers), Bete-Bendi (Latn, 100,000 speakers), Dii (Latn, 71,000 speakers), Belarusian (Cyrl, 10,064,517 speakers), Nateni (Latn, 100,000 speakers), Fur (Latn, 1,230,163 speakers), Koonzime (Latn, 40,000 speakers), Lugbara (Latn, 2,200,000 speakers), Sar (Latn, 500,000 speakers), Igbo (Latn, 27,823,640 speakers), Teke-Ebo (Latn, 260,000 speakers), Yala (Latn, 200,000 speakers), Ejagham (Latn, 120,000 speakers), Navajo (Latn, 166,319 speakers), Cicipu (Latn, 44,000 speakers), Mfumte (Latn, 79,000 speakers), Makaa (Latn, 221,000 speakers), Gulay (Latn, 250,478 speakers), Nzakara (Latn, 50,000 speakers), Zapotec (Latn, 490,000 speakers), Mundani (Latn, 34,000 speakers), Ijo, Southeast (Latn, 2,471,000 speakers), Mango (Latn, 77,000 speakers), Kom (Latn, 360,685 speakers), Kaska (Latn, 125 speakers).
[code: soft-dotted]

Font File Checks

⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️ℹ️ℹ️ℹ️

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>

Familyname must be unique according to namecheck.fontdata.com

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

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>

⚠️ NotoKufiArabic[wght].ttf

⚠️ WARN

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

- uni0627 + uni0644.init

- uni0644.init + uni0644.medi

- uni0644.medi + uni0651

- uni0651 + uni0670

- 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>

⚠️ NotoKufiArabic[wght].ttf

⚠️ WARN
This variable font does not have an avar table.
[code: missing-avar]

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

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

⚠️ NotoKufiArabic[wght].ttf

⚠️ WARN
This font file does not have a 'meta' table.
[code: lacks-meta-table]

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.

Checking with fontTools.ttx

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.

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.