Fontbakery Technical 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 🔥 FAIL ⚠️ WARN ⏩ SKIP ℹ️ INFO ✅ PASS
0 0 11 60 8 162
0% 0% 6% 34% 5% 93%

Note: The following loglevels were omitted in this report: SKIP, INFO, PASS, DEBUG

Meaning of check results:

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: 0.9.2

Section: Google Fonts

⚠️⚠️⚠️⚠️⚠️⚠️⚠️⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩⏩ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️

Checking OS/2 achVendID.

Check ID: <FontBakeryCheck:com.google.fonts/check/vendor_id>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

    OS/2 VendorID value 'NONE' is not yet recognized. If you registered it recently, then it's safe to ignore this warning message. Otherwise, you should set it to your own unique 4 character code, and register it with Microsoft at https://www.microsoft.com/typography/links/vendorlist.aspx [code: unknown]

Check Google Fonts glyph coverage.

Check ID: <FontBakeryCheck:com.google.fonts/check/glyph_coverage>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

    GF_TransLatin_Arabic is almost fulfilled. Missing codepoints:

    - 0x02BC (MODIFIER LETTER APOSTROPHE)
    
    
    - 0x1E34 (LATIN CAPITAL LETTER K WITH LINE BELOW)
    
    
    - 0x1E35 (LATIN SMALL LETTER K WITH LINE BELOW)
    
    
    - 0x1E96 (LATIN SMALL LETTER H WITH LINE BELOW)
    
    
    - 0x02BD (MODIFIER LETTER REVERSED COMMA)
    

    [code: missing-codepoints]

Check for codepoints not covered by METADATA subsets.

Check ID: <FontBakeryCheck:com.google.fonts/check/metadata/unreachable_subsetting>
⚠️ YoungSerif-Regular.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+0272 LATIN SMALL LETTER N WITH LEFT HOOK: not included in any glyphset definition
    • U+02BE MODIFIER LETTER RIGHT HALF RING: not included in any glyphset definition
    • U+02BF MODIFIER LETTER LEFT HALF RING: not included in any glyphset definition
    • U+02C7 CARON: try adding one of: canadian-aboriginal, tifinagh
    • U+02C8 MODIFIER LETTER VERTICAL LINE: not included in any glyphset definition
    • U+02CA MODIFIER LETTER ACUTE ACCENT: not included in any glyphset definition
    • U+02CB MODIFIER LETTER GRAVE ACCENT: not included in any glyphset definition
    • U+02CC MODIFIER LETTER LOW VERTICAL LINE: not included in any glyphset definition
    • U+02D8 BREVE: try adding canadian-aboriginal
    • U+02D9 DOT ABOVE: try adding canadian-aboriginal
    • U+02DB OGONEK: try adding canadian-aboriginal
    • U+02DD DOUBLE ACUTE ACCENT: not included in any glyphset definition
    • U+0300 COMBINING GRAVE ACCENT: try adding one of: coptic, tai-le, cherokee
    • U+0301 COMBINING ACUTE ACCENT: try adding one of: coptic, tifinagh, tai-le, cherokee
    • U+0302 COMBINING CIRCUMFLEX ACCENT: try adding one of: coptic, tifinagh, cherokee
    • U+0303 COMBINING TILDE: not included in any glyphset definition
    • U+0304 COMBINING MACRON: try adding one of: coptic, tifinagh, gothic, cherokee
    • U+0306 COMBINING BREVE: try adding tifinagh
    • U+0307 COMBINING DOT ABOVE: try adding one of: tifinagh, tai-le, malayalam, coptic, canadian-aboriginal
    • U+0308 COMBINING DIAERESIS: try adding one of: coptic, tai-le, gothic
    • U+030A COMBINING RING ABOVE: not included in any glyphset definition
    • U+030B COMBINING DOUBLE ACUTE ACCENT: try adding cherokee
    • U+030C COMBINING CARON: try adding one of: tai-le, cherokee
    • U+0312 COMBINING TURNED COMMA ABOVE: not included in any glyphset definition
    • U+0323 COMBINING DOT BELOW: try adding one of: coptic, tifinagh, malayalam, cherokee
    • 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+032E COMBINING BREVE BELOW: not included in any glyphset definition
    • U+0331 COMBINING MACRON BELOW: try adding one of: tifinagh, gothic, cherokee
    • U+0394 GREEK CAPITAL LETTER DELTA: try adding greek
    • U+03A9 GREEK CAPITAL LETTER OMEGA: try adding greek
    • U+03BC GREEK SMALL LETTER MU: try adding greek
    • U+03C0 GREEK SMALL LETTER PI: try adding greek
    • U+1EA0 LATIN CAPITAL LETTER A WITH DOT BELOW: try adding vietnamese
    • U+1EA1 LATIN SMALL LETTER A WITH DOT BELOW: try adding vietnamese
    • U+1EB8 LATIN CAPITAL LETTER E WITH DOT BELOW: try adding vietnamese
    • U+1EB9 LATIN SMALL LETTER E WITH DOT BELOW: try adding vietnamese
    • U+1EBC LATIN CAPITAL LETTER E WITH TILDE: try adding vietnamese
    • U+1EBD LATIN SMALL LETTER E WITH TILDE: try adding vietnamese
    • U+1ECA LATIN CAPITAL LETTER I WITH DOT BELOW: try adding vietnamese
    • U+1ECB LATIN SMALL LETTER I WITH DOT BELOW: try adding vietnamese
    • U+1ECC LATIN CAPITAL LETTER O WITH DOT BELOW: try adding vietnamese
    • U+1ECD LATIN SMALL LETTER O WITH DOT BELOW: try adding vietnamese
    • U+1EE4 LATIN CAPITAL LETTER U WITH DOT BELOW: try adding vietnamese
    • U+1EE5 LATIN SMALL LETTER U WITH DOT BELOW: try adding vietnamese
    • U+2007 FIGURE SPACE: not included in any glyphset definition
    • U+2008 PUNCTUATION SPACE: not included in any glyphset definition
    • U+200A HAIR SPACE: not included in any glyphset definition
    • U+2010 HYPHEN: try adding one of: cham, sundanese, lisu, syloti-nagri, arabic, kayah-li, coptic, kaithi, kharoshthi
    • U+2012 FIGURE DASH: not included in any glyphset definition
    • U+2015 HORIZONTAL BAR: not included in any glyphset definition
    • U+2021 DOUBLE DAGGER: not included in any glyphset definition
    • U+2030 PER MILLE SIGN: not included in any glyphset definition
    • U+2070 SUPERSCRIPT ZERO: not included in any glyphset definition
    • U+2075 SUPERSCRIPT FIVE: not included in any glyphset definition
    • U+2076 SUPERSCRIPT SIX: not included in any glyphset definition
    • U+2077 SUPERSCRIPT SEVEN: not included in any glyphset definition
    • U+2078 SUPERSCRIPT EIGHT: not included in any glyphset definition
    • U+2079 SUPERSCRIPT NINE: not included in any glyphset definition
    • U+2080 SUBSCRIPT ZERO: not included in any glyphset definition
    • U+2081 SUBSCRIPT ONE: not included in any glyphset definition
    • U+2082 SUBSCRIPT TWO: not included in any glyphset definition
    • U+2083 SUBSCRIPT THREE: not included in any glyphset definition
    • U+2084 SUBSCRIPT FOUR: not included in any glyphset definition
    • U+2085 SUBSCRIPT FIVE: not included in any glyphset definition
    • U+2086 SUBSCRIPT SIX: not included in any glyphset definition
    • U+2087 SUBSCRIPT SEVEN: not included in any glyphset definition
    • U+2088 SUBSCRIPT EIGHT: not included in any glyphset definition
    • U+2089 SUBSCRIPT NINE: not included in any glyphset definition
    • U+2105 CARE OF: not included in any glyphset definition
    • U+2106 CADA UNA: not included in any glyphset definition
    • U+2116 NUMERO SIGN: try adding cyrillic
    • U+2126 OHM SIGN: not included in any glyphset definition
    • U+212E ESTIMATED SYMBOL: not included in any glyphset definition
    • U+21E7 UPWARDS WHITE ARROW: not included in any glyphset definition
    • U+2202 PARTIAL DIFFERENTIAL: not included in any glyphset definition
    • U+2205 EMPTY SET: not included in any glyphset definition
    • U+2206 INCREMENT: not included in any glyphset definition
    • U+220F N-ARY PRODUCT: not included in any glyphset definition
    • U+2211 N-ARY SUMMATION: not included in any glyphset definition
    • U+2219 BULLET OPERATOR: try adding tai-tham
    • U+221A SQUARE ROOT: not included in any glyphset definition
    • U+221E INFINITY: not included in any glyphset definition
    • U+222B INTEGRAL: not included in any glyphset definition
    • U+2248 ALMOST EQUAL TO: not included in any glyphset definition
    • U+2260 NOT EQUAL TO: not included in any glyphset definition
    • U+2264 LESS-THAN OR EQUAL TO: not included in any glyphset definition
    • U+2265 GREATER-THAN OR EQUAL TO: not included in any glyphset definition
    • U+2317 VIEWDATA SQUARE: not included in any glyphset definition
    • U+2318 PLACE OF INTEREST SIGN: not included in any glyphset definition
    • U+2325 OPTION KEY: not included in any glyphset definition
    • U+25A0 BLACK SQUARE: not included in any glyphset definition
    • U+25A1 WHITE SQUARE: not included in any glyphset definition
    • U+25B2 BLACK UP-POINTING TRIANGLE: not included in any glyphset definition
    • U+25B3 WHITE UP-POINTING TRIANGLE: not included in any glyphset definition
    • U+25B6 BLACK RIGHT-POINTING TRIANGLE: not included in any glyphset definition
    • U+25B7 WHITE RIGHT-POINTING TRIANGLE: not included in any glyphset definition
    • U+25BC BLACK DOWN-POINTING TRIANGLE: not included in any glyphset definition
    • U+25BD WHITE DOWN-POINTING TRIANGLE: not included in any glyphset definition
    • U+25C0 BLACK LEFT-POINTING TRIANGLE: not included in any glyphset definition
    • U+25C1 WHITE LEFT-POINTING TRIANGLE: not included in any glyphset definition
    • U+25C6 BLACK DIAMOND: not included in any glyphset definition
    • U+25C7 WHITE DIAMOND: not included in any glyphset definition
    • U+25CA LOZENGE: not included in any glyphset definition
    • U+25CB WHITE CIRCLE: not included in any glyphset definition
    • U+25CF BLACK CIRCLE: not included in any glyphset definition
    • U+2B1B BLACK LARGE SQUARE: not included in any glyphset definition
    • U+2B1C WHITE LARGE SQUARE: not included in any glyphset definition
    • U+2B98 THREE-D TOP-LIGHTED LEFTWARDS EQUILATERAL ARROWHEAD: not included in any glyphset definition
    • U+2B99 THREE-D RIGHT-LIGHTED UPWARDS EQUILATERAL ARROWHEAD: not included in any glyphset definition
    • U+2B9A THREE-D TOP-LIGHTED RIGHTWARDS EQUILATERAL ARROWHEAD: not included in any glyphset definition
    • U+2B9B THREE-D LEFT-LIGHTED DOWNWARDS EQUILATERAL ARROWHEAD: not included in any glyphset definition
    • U+2B9C BLACK LEFTWARDS EQUILATERAL ARROWHEAD: not included in any glyphset definition
    • U+2B9D BLACK UPWARDS EQUILATERAL ARROWHEAD: not included in any glyphset definition
    • U+2B9E BLACK RIGHTWARDS EQUILATERAL ARROWHEAD: not included in any glyphset definition
    • U+2B9F BLACK DOWNWARDS EQUILATERAL ARROWHEAD: not included in any glyphset definition
    • U+FB00 LATIN SMALL LIGATURE FF: not included in any glyphset definition
    • U+FB01 LATIN SMALL LIGATURE FI: not included in any glyphset definition
    • U+FB02 LATIN SMALL LIGATURE FL: not included in any glyphset definition
    • U+FB03 LATIN SMALL LIGATURE FFI: not included in any glyphset definition
    • U+FB04 LATIN SMALL LIGATURE FFL: not included in any glyphset definition

    Or you can add the above codepoints to one of the subsets supported by the font: latin, latin-ext, menu [code: unreachable-subsetting]

Is there kerning info for non-ligated sequences?

Check ID: <FontBakeryCheck:com.google.fonts/check/kerning_for_non_ligated_sequences>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

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

    - f + f
    
    - f + i
    
    - i + f
    
    - f + l
    
    - l + f
    
    - i + l [code: lacks-kern-info]
    

A static fonts directory with at least two fonts must accompany variable fonts

Check ID: <FontBakeryCheck:com.google.fonts/check/repo/vf_has_static_fonts>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

    Please consider adding a subdirectory called "static/" and including in it static font files. [code: missing]

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>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

    The DESCRIPTION.en_us.html file in this family has not changed in comparison to the latest font release on the google/fonts github repo. Please consider mentioning note-worthy improvements made to the family recently. [code: description-not-updated]

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

Check ID: <FontBakeryCheck:com.google.fonts/check/meta/script_lang_tags>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

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

Section: Universal

⚠️⚠️⏩⏩⏩⏩⏩⏩ℹ️ℹ️

Check font contains no unreachable glyphs

Check ID: <FontBakeryCheck:com.google.fonts/check/unreachable_glyphs>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

    The following glyphs could not be reached by codepoint or substitution rules:

    - IJacute
    
    - eight.subs
    
    - five.subs
    
    - four.subs
    
    - ijacute
    
    - nine.subs
    
    - one.subs
    
    - prime
    
    - seven.subs
    
    - six.subs
    
    - three.subs
    
    - two.subs
    
    - zero.subs
    

    [code: unreachable-glyphs]

Check if each glyph has the recommended amount of contours.

Check ID: <FontBakeryCheck:com.google.fonts/check/contour_count>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

    This check inspects the glyph outlines and detects the total number of contours in each of them. The expected values are infered from the typical ammounts of contours observed in a large collection of reference font families. The divergences listed below may simply indicate a significantly different design on some of your glyphs. On the other hand, some of these may flag actual bugs in the font such as glyphs mapped to an incorrect codepoint. Please consider reviewing the design and codepoint assignment of these to make sure they are correct.

    The following glyphs do not have the recommended number of contours:

    - Glyph name: aogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: eogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: Tbar	Contours detected: 2	Expected: 1
    
    - Glyph name: Uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: uni01EA	Contours detected: 3	Expected: 2
    
    - Glyph name: uni01EB	Contours detected: 3	Expected: 2
    
    - Glyph name: uni1E08	Contours detected: 3	Expected: 2
    
    - Glyph name: uni1E09	Contours detected: 3	Expected: 2
    
    - Glyph name: uni1E1C	Contours detected: 3	Expected: 2
    
    - Glyph name: uni1E1D	Contours detected: 4	Expected: 3
    
    - Glyph name: Tbar	Contours detected: 2	Expected: 1
    
    - Glyph name: Uogonek	Contours detected: 2	Expected: 1
    
    - Glyph name: aogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: eogonek	Contours detected: 3	Expected: 2
    
    - Glyph name: uni1E08	Contours detected: 3	Expected: 2
    
    - Glyph name: uni1E09	Contours detected: 3	Expected: 2
    
    - Glyph name: uni1E1C	Contours detected: 3	Expected: 2
    
    - Glyph name: uni1E1D	Contours detected: 4	Expected: 3
    
    - Glyph name: uogonek	Contours detected: 2	Expected: 1
    

    [code: contour-count]

Section: Shaping Checks

⚠️⚠️⏩⏩⏩

Ensure dotted circle glyph is present and can attach marks.

Check ID: <FontBakeryCheck:com.google.fonts/check/dotted_circle>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

    No dotted circle glyph present [code: missing-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>
⚠️ YoungSerif-Regular.ttf
  • ⚠️ WARN

    The dot of soft dotted characters used in orthographies must disappear in the following strings: į̀ į́ į̂ į̃ į̄ į̌ ị̀ ị́ ị̂ ị̃ ị̄

    The dot of soft dotted characters should disappear in other cases, for example: i̦̇ i̦̊ i̦̋ ǐ̦ i̦̒ j̦̀ j̦́ j̦̃ j̦̄ j̦̆ j̦̇ j̦̈ j̦̊ j̦̋ ǰ̦ j̦̒ į̆ į̇ į̈ į̊

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

    Your font does not cover the following languages that require the soft-dotted feature: Basaa (Latn, 332,940 speakers), Navajo (Latn, 166,319 speakers), Aghem (Latn, 38,843 speakers), Lithuanian (Latn, 2,357,094 speakers), Belarusian (Cyrl, 10,064,517 speakers), Ukrainian (Cyrl, 29,273,587 speakers), Igbo (Latn, 27,823,640 speakers). [code: soft-dotted]