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Fontspector 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/fontspector/issues and remember to include a pointer to the repo and branch you're checking.

Summary

🔥 FAIL⚠️ WARNℹ️ INFO✅ PASS⏩ SKIP
10 17 8 116 57
5% 8% 4% 56% 27%

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!)

Fontspector version: 1.8.0

Opentype Specification Checks

Check mark characters are in GDEF mark glyph class.

Check ID: opentype/GDEF_mark_chars
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    The following mark characters should be in the GDEF mark glyph class:

    • U+0951 (uni0951)
    • U+0952 (uni0952)
    • U+0C81 (uni0C81)
    • U+0CBC (uni0CBC)
    • U+0CBF (uni0CBF)
    • U+0CC6 (uni0CC6)
    • U+0CCC (uni0CCC)
    • U+0CCD (uni0CCD)
    • U+0CE2 (uni0CE2)
    • U+0CE3 (uni0CE3)
    • U+1CD0 (uni1CD0)
    • U+1CD2 (uni1CD2)
    • U+1CDA (doubleSvarita_vedic)
    • U+1CF4 (uni1CF4)
    [code: mark-chars]

Validates subfamilyNameID and postScriptNameID for the default instance record

Check ID: opentype/varfont/valid_default_instance_nameids
🔥 NotoSerifKannada[wght].ttf
  • 🔥 FAIL

    Thin instance has the same coordinates as the default instance; its subfamily name should be Light.

    Note: It is alternatively possible that Name ID 17 is incorrect, and should be set to the default instance subfamily name, Light, rather than 'Light'. If the default instance is Thin, NameID 17 is probably the problem.

    [code: invalid-default-instance-subfamily-name]
  • 🔥 FAIL

    Thin instance has the same coordinates as the default instance; its postscript name should be NotoSerifKannada-Light instead of NotoSerifKannada-Thin.

    [code: invalid-default-instance-postscript-name]

Universal Profile Checks

Check accent of Lcaron, dcaron, lcaron, tcaron

Check ID: alt_caron
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    Lcaron is decomposed and therefore could not be checked. Please check manually.

    [code: decomposed-outline]
  • ⚠️ WARN

    dcaron is decomposed and therefore could not be checked. Please check manually.

    [code: decomposed-outline]
  • ⚠️ WARN

    lcaron is decomposed and therefore could not be checked. Please check manually.

    [code: decomposed-outline]
  • ⚠️ WARN

    tcaron is decomposed and therefore could not be checked. Please check manually.

    [code: decomposed-outline]

Check base characters have non-zero advance width.

Check ID: base_has_width
🔥 NotoSerifKannada[wght].ttf
  • 🔥 FAIL

    The following glyphs had zero advance width:

    • uni0CD6 (Some(3286))
    [code: zero-width-bases]

Check if each glyph has the recommended amount of contours.

Check ID: contour_count
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    This check inspects the glyph outlines and detects the total number of contours in each of them. The expected values are inferred from the typical amounts 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:
    • uni0C87 (U+0C87): found 1, expected one of: [2, 3]
    • uni0C88 (U+0C88): found 3, expected one of: [4, 5, 6]
    • uni0C9A (U+0C9A): found 3, expected one of: [1, 2, 6]
    • uni0CB3 (U+0CB3): found 5, expected one of: [3, 4, 6]
    • uni0CCD (U+0CCD): found 1, expected one of: [2, 12]
    • jihvamuliyaSign_vedic (U+1CF5): found 2, expected one of: [1, 3]
    • minus (U+08A4): found 1, expected one of: [5, 6]
    [code: contour-count]

Are there caret positions declared for every ligature?

Check ID: ligature_carets
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    This font lacks caret position values for ligature glyphs on its GDEF table.

    [code: lacks-caret-pos]

Does the font contain a soft hyphen?

Check ID: soft_hyphen
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    This font has a 'Soft Hyphen' character.

    [code: softhyphen]

Ensure Stylistic Sets have description.

Check ID: stylisticset_description
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    The stylistic set ss01 lacks a description string in the name table

    [code: missing-description]

Checking that the typoAscender exceeds the yMax of the /Agrave.

Check ID: typoascender_exceeds_Agrave
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    OS/2.sTypoAscender value should be greater than 931, but got 910 instead

    [code: typoAscender]

Metadata Checks

Check for codepoints not covered by METADATA subsets.

Check ID: googlefonts/metadata/unreachable_subsetting
⚠️ variable-ttf
  • ⚠️ WARN

    fonts/NotoSerifKannada/googlefonts/variable-ttf/NotoSerifKannada[wght].ttf: 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: yi, canadian-aboriginal
    • 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: coptic, tifinagh, cherokee, math
    • U+0306 COMBINING BREVE: try adding one of: tifinagh, old-permic
    • U+0307 COMBINING DOT ABOVE: try adding one of: malayalam, math, tai-le, canadian-aboriginal, duployan, tifinagh, coptic, old-permic, todhri, hebrew, 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+07DA NKO LETTER RRA: try adding nko
    • U+07DD NKO LETTER FA: try adding nko
    • U+07DE NKO LETTER KA: try adding nko
    • U+07E2 NKO LETTER NYA: try adding nko
    • U+07E3 NKO LETTER NA: try adding nko
    • U+07EA NKO LETTER JONA RA: try adding nko
    • U+08A4 ARABIC LETTER FEH WITH DOT BELOW AND THREE DOTS ABOVE: try adding arabic
    • U+1CF5 VEDIC SIGN JIHVAMULIYA: try adding one of: bengali, devanagari

    Or you can add the above codepoints to one of the subsets supported by the font: kannada, latin-ext, latin

    [code: unreachable-subsetting]

Glyphset Checks

Shapes languages in all GF glyphsets.

Check ID: googlefonts/glyphsets/shape_languages
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    Warning language shaping:

    Message Languages
    Auxiliary orthography codepoints: * lv_Latn (Latvian)
    The following auxiliary characters are missing from the font: Ō
    The following auxiliary characters are missing from the font: Ŗ
    The following auxiliary characters are missing from the font: ō
    The following auxiliary characters are missing from the font: ŗ
    Auxiliary orthography codepoints: * cs_Latn (Czech)
    The following auxiliary characters are missing from the font: Ĕ * cy_Latn (Welsh)
    The following auxiliary characters are missing from the font: Ĭ * es_Latn (Spanish)
    The following auxiliary characters are missing from the font: Ŏ * hu_Latn (Hungarian)
    The following auxiliary characters are missing from the font: Ō * pt_Latn (Portuguese)
    The following auxiliary characters are missing from the font: Ŭ * sk_Latn (Slovak)
    The following auxiliary characters are missing from the font: ĕ * tr_Latn (Turkish)
    The following auxiliary characters are missing from the font: ĭ
    The following auxiliary characters are missing from the font: ŏ
    The following auxiliary characters are missing from the font: ō
    The following auxiliary characters are missing from the font: ŭ
    Auxiliary orthography codepoints: * en_Latn (English)
    The following auxiliary characters are missing from the font: Ĕ
    The following auxiliary characters are missing from the font: Ĭ
    The following auxiliary characters are missing from the font: Ŏ
    The following auxiliary characters are missing from the font: Ō
    The following auxiliary characters are missing from the font: Ŭ
    The following auxiliary characters are missing from the font: ĕ
    The following auxiliary characters are missing from the font: ĭ
    The following auxiliary characters are missing from the font: ŏ
    The following auxiliary characters are missing from the font: ō
    The following auxiliary characters are missing from the font: ŭ
    The following auxiliary characters are missing from the font: ʻ
    Auxiliary orthography codepoints: * lt_Latn (Lithuanian)
    The following auxiliary characters are missing from the font: Ẽ
    The following auxiliary characters are missing from the font: Ĩ
    The following auxiliary characters are missing from the font: Ũ
    The following auxiliary characters are missing from the font: ẽ
    The following auxiliary characters are missing from the font: ĩ
    The following auxiliary characters are missing from the font: ũ
    Auxiliary orthography codepoints: * fr_Latn (French)
    The following auxiliary characters are missing from the font: Ǔ
    The following auxiliary characters are missing from the font: ſ
    The following auxiliary characters are missing from the font: ǔ
    Auxiliary orthography codepoints: * fi_Latn (Finnish)
    The following auxiliary characters are missing from the font: Ǧ
    The following auxiliary characters are missing from the font: Ǥ
    The following auxiliary characters are missing from the font: Ȟ
    The following auxiliary characters are missing from the font: Ǩ
    The following auxiliary characters are missing from the font: Ŋ
    The following auxiliary characters are missing from the font: Ŝ
    The following auxiliary characters are missing from the font: Ţ
    The following auxiliary characters are missing from the font: Ŧ
    The following auxiliary characters are missing from the font: Ʒ
    The following auxiliary characters are missing from the font: Ǯ
    The following auxiliary characters are missing from the font: ǧ
    The following auxiliary characters are missing from the font: ǥ
    The following auxiliary characters are missing from the font: ȟ
    The following auxiliary characters are missing from the font: ǩ
    The following auxiliary characters are missing from the font: ŋ
    The following auxiliary characters are missing from the font: ŝ
    The following auxiliary characters are missing from the font: ţ
    The following auxiliary characters are missing from the font: ŧ
    The following auxiliary characters are missing from the font: ʒ
    The following auxiliary characters are missing from the font: ǯ
    Auxiliary orthography codepoints: * da_Latn (Danish)
    The following auxiliary characters are missing from the font: Ǿ
    The following auxiliary characters are missing from the font: ǿ
    Auxiliary orthography codepoints: * ca_Latn (Catalan)
    The following auxiliary characters are missing from the font: Ĕ
    The following auxiliary characters are missing from the font: Ĭ
    The following auxiliary characters are missing from the font: Ŀ
    The following auxiliary characters are missing from the font: Ŏ
    The following auxiliary characters are missing from the font: Ō
    The following auxiliary characters are missing from the font: Ŭ
    The following auxiliary characters are missing from the font: ĕ
    The following auxiliary characters are missing from the font: ĭ
    The following auxiliary characters are missing from the font: ŀ
    The following auxiliary characters are missing from the font: ŏ
    The following auxiliary characters are missing from the font: ō
    The following auxiliary characters are missing from the font: ŭ
    Auxiliary orthography codepoints: * de_Latn (German)
    The following auxiliary characters are missing from the font: Ĕ
    The following auxiliary characters are missing from the font: Ĭ
    The following auxiliary characters are missing from the font: Ŏ
    The following auxiliary characters are missing from the font: Ō
    The following auxiliary characters are missing from the font: Ŭ
    The following auxiliary characters are missing from the font: ĕ
    The following auxiliary characters are missing from the font: ĭ
    The following auxiliary characters are missing from the font: ŏ
    The following auxiliary characters are missing from the font: ō
    The following auxiliary characters are missing from the font: ſ
    The following auxiliary characters are missing from the font: ŭ
    Auxiliary orthography codepoints: * ro_Latn (Romanian)
    The following auxiliary characters are missing from the font: Ţ
    The following auxiliary characters are missing from the font: ţ
    Auxiliary orthography codepoints: * nl_Latn (Dutch)
    The following auxiliary characters are missing from the font: IJ
    The following auxiliary characters are missing from the font: ij
    Auxiliary orthography codepoints: * nb_Latn (Norwegian Bokmål)
    The following auxiliary characters are missing from the font: Ǎ
    The following auxiliary characters are missing from the font: Ŋ
    The following auxiliary characters are missing from the font: Ŧ
    The following auxiliary characters are missing from the font: ǎ
    The following auxiliary characters are missing from the font: ŋ
    The following auxiliary characters are missing from the font: ŧ
    [code: warning-language-shaping]

Font has correct separator glyphs?

Check ID: googlefonts/separator_glyphs
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    Missing separator glyph U+2028

    [code: missing-separator-glyphs]
  • ⚠️ WARN

    Missing separator glyph U+2029

    [code: missing-separator-glyphs]

Font File Checks

Check Google Fonts glyph coverage.

Check ID: googlefonts/glyph_coverage
🔥 variable-ttf
  • 🔥 FAIL

    fonts/NotoSerifKannada/googlefonts/variable-ttf/NotoSerifKannada[wght].ttf missing required codepoints:

    • 0x2013: EN DASH
    • 0x2014: EM DASH
    • 0x2018: LEFT SINGLE QUOTATION MARK
    • 0x2019: RIGHT SINGLE QUOTATION MARK
    • 0x2026: HORIZONTAL ELLIPSIS
    • 0x2212: MINUS SIGN
    [code: missing-codepoints]

Check font names are correct

Check ID: googlefonts/font_names
🔥 NotoSerifKannada[wght].ttf
  • 🔥 FAIL

    Font names are incorrect:

    Name Current Expected
    Family Name Noto Serif Kannada Light Noto Serif Kannada Thin
    Subfamily Name Regular Regular
    Full Name Noto Serif Kannada Light Noto Serif Kannada Thin
    Postscript Name NotoSerifKannada-Light NotoSerifKannada-Thin
    Typographic Family Name Noto Serif Kannada Noto Serif Kannada
    Typographic Subfamily Name Light Thin
    [code: bad-names]

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

Check ID: googlefonts/meta/script_lang_tags
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    This font file does not have a 'meta' table.

    [code: lacks-meta-table]

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

Check ID: googlefonts/STAT/axisregistry
🔥 NotoSerifKannada[wght].ttf
  • 🔥 FAIL

    STAT table is missing Axis Value Records

    [code: missing-axis-values]

Check a font's STAT table contains compulsory Axis Values.

Check ID: googlefonts/STAT/compulsory_axis_values
🔥 NotoSerifKannada[wght].ttf
  • 🔥 FAIL

    Compulsory STAT Axis Values are incorrect:

    Name Axis Current Value Expected Value Current Flags Expected Flags Current Linked Value Expected Linked Value
    Black wght N/A 900 N/A 0 N/A N/A
    Bold wght N/A 700 N/A 0 N/A N/A
    ExtraBold wght N/A 800 N/A 0 N/A N/A
    ExtraLight wght N/A 200 N/A 0 N/A N/A
    Light wght N/A 300 N/A 0 N/A N/A
    Medium wght N/A 500 N/A 0 N/A N/A
    Regular wght N/A 400 N/A 2 N/A 700
    SemiBold wght N/A 600 N/A 0 N/A N/A
    Thin wght N/A 100 N/A 0 N/A N/A
    [code: bad-axis-values]

Version number has increased since previous release on Google Fonts?

Check ID: googlefonts/version_bump
🔥 NotoSerifKannada[wght].ttf
  • 🔥 FAIL

    Version number 2.005005 is equal to version on Google fonts

    [code: same-version]

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

Check ID: googlefonts/weightclass
🔥 NotoSerifKannada[wght].ttf
  • 🔥 FAIL

    Best SubFamily name is 'Light'. Expected OS/2 usWeightClass is 300, got 100.

    [code: bad-value]

Shaping Checks

Ensure dotted circle glyph is present and can attach marks.

Check ID: dotted_circle
🔥 NotoSerifKannada[wght].ttf
  • 🔥 FAIL

    The following glyphs could not be attached to the dotted circle glyph:

    • uni0328
    [code: unattached-dotted-circle-marks]

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

Check ID: soft_dotted
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    The dot of soft dotted characters used in orthographies must disappear in the following strings:

    • į́

    • į̄

    • į̀

    • į̂

    • į̃

    • į̌The dot of soft dotted characters should disappear in other cases, for example:

    • į̈

    • į̆

    • į̋

    • į̊

    • į̇

    [code: soft-dotted]

Outline Checks

Check the direction of the outermost contour in each glyph

Check ID: outline_direction
⚠️ NotoSerifKannada[wght].ttf
  • ⚠️ WARN

    The following glyphs have a counter-clockwise outer contour:

    • nakaarapollu_kannada (U+0CDD) has a counter-clockwise outer contour
    [code: ccw-outer-contour]