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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
3 11 8 112 50
2% 6% 4% 61% 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: 1.5.0

Universal Profile Checks

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

Check ID: arabic_high_hamza
🔥 NotoSansArabic[wdth,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 if each glyph has the recommended amount of contours.

Check ID: contour_count
⚠️ NotoSansArabic[wdth,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:
    
    • uni0621 (U+FE80): found 2, expected one of: {1}
    • uni066E (U+066E): found 2, expected one of: {64, 1}
    • uni0635 (U+FEB9): found 1, expected one of: {2}
    • uni0635.init (U+FEBB): found 1, expected one of: {3, 96, 2}
    • uni0639 (U+FEC9): found 2, expected one of: {1}
    • uni08AC.fina (unencoded): found 4, expected one of: {3}
    • uni0645.init (U+FEE3): found 1, expected one of: {56, 2, 3}
    • uni0648 (U+FEED): found 1, expected one of: {2}
    • uni0667 (U+0667): found 2, expected one of: {72, 1}
    • uni0668 (U+06F8): found 2, expected one of: {3, 1}
    • uni06F7 (U+06F7): found 2, expected one of: {1, 72}
    • uni200D (U+200D): found 3, expected one of: {1, 0, 2}
    • uniFD46 (U+FD46): found 17, expected one of: {34, 28}
    • uniFD4C (U+FD4C): found 21, expected one of: {24, 31, 41}
    • uniFD4A (U+FD4A): found 21, expected one of: {36, 30}
    • uniFD47 (U+FD47): found 23, expected one of: {20, 16}
    • uniFD4D (U+FD4D): found 23, expected one of: {22, 21}
    • uniFD49 (U+FD49): found 23, expected one of: {16, 21}
    • uniFD48 (U+FD48): found 23, expected one of: {17, 22}
    • uniFDCF (U+FDCF): found 21, expected one of: {15, 16}
    • uniFD42 (U+FD42): found 18, expected one of: {21, 16}
    • uniFD44 (U+FD44): found 20, expected one of: {18, 23}
    • uniFD43 (U+FD43): found 19, expected one of: {17, 21}
    • uniFD40 (U+FD40): found 13, expected one of: {12, 15}
    • uniFD4F (U+FD4F): found 13, expected one of: {17, 21}
    • uniFD4B (U+FD4B): found 11, expected one of: {13, 20}
    • uniFDFF (U+FDFF): found 9, expected one of: {18, 15}
    • uniFD4E (U+FD4E): found 22, expected one of: {26, 24}
    • uniFDFE (U+FDFE): found 23, expected one of: {26, 24}
    • uni065A (U+065A): found 2, expected one of: {1}
    • uni065B (U+065B): found 2, expected one of: {1}
    • vbelowar (unencoded): found 2, expected one of: {1}
    • vinvertedbelowar (unencoded): found 2, expected one of: {1}
    • uni08F7 (U+08F7): found 2, expected one of: {1}
    • uni08F8 (U+08F8): found 2, expected one of: {1}
    • uni08FB (U+08FB): found 4, expected one of: {1, 2}
    • uni08FC (U+08FC): found 5, expected one of: {2, 3}
    • uni08FD (U+08FD): found 3, expected one of: {2}
    • uni089C (U+089C): found 2, expected one of: {1}
    • uni08F9 (U+08F9): found 2, expected one of: {1}
    • uni08FA (U+08FA): found 2, expected one of: {1}
    • uni08D5 (U+08D5): found 1, expected one of: {3, 2}
    • uni08DB (U+08DB): found 7, expected one of: {12, 6, 10}
    • uni08DA (U+08DA): found 11, expected one of: {15, 8, 16}
    • uni08D4 (U+08D4): found 5, expected one of: {4, 6, 9}
    • uni08DE (U+08DE): found 6, expected one of: {8, 5}
    • uni08DD (U+08DD): found 5, expected one of: {3, 9}
    • uni08DF (U+08DF): found 9, expected one of: {8, 10, 12}
    • uni0898 (U+0898): found 9, expected one of: {7, 8, 11}
    • uni089B (U+089B): found 11, expected one of: {9, 12}
    • u10EFD (U+10EFD): found 5, expected one of: {3, 9}
    • uni0666.medium (unencoded): found 2, expected one of: {1}
    • uni0667.medium (unencoded): found 2, expected one of: {1}
    • uni0668.medium (unencoded): found 2, expected one of: {1}
    • uni0667.small (unencoded): found 2, expected one of: {1}
    • uni0668.small (unencoded): found 2, expected one of: {1}
    • uni0628 (U+FE8F): found 3, expected one of: {2}
    • uni062A (U+FE95): found 4, expected one of: {3}
    • uni062B (U+FE99): found 5, expected one of: {4}
    • uni067C (U+067C): found 6, expected one of: {5, 3, 4}
    • uni067D (U+067D): found 5, expected one of: {4, 3}
    • uni0750 (U+0750): found 5, expected one of: {4, 2}
    • uni0751 (U+0751): found 6, expected one of: {5, 4}
    • uni0752 (U+0752): found 5, expected one of: {3, 4}
    • uni0753 (U+0753): found 7, expected one of: {6, 4}
    • uni0754 (U+0754): found 5, expected one of: {4, 3}
    • uni0755 (U+0755): found 4, expected one of: {2}
    • uni0756 (U+0756): found 4, expected one of: {2}
    • uni08A0 (U+08A0): found 4, expected one of: {2}
    • uni08B6 (U+08B6): found 4, expected one of: {3, 0}
    • uni08B7 (U+08B7): found 6, expected one of: {0, 5, 4}
    • uni08B8 (U+08B8): found 5, expected one of: {4, 3}
    • uni08BE (U+08BE): found 7, expected one of: {5, 4}
    • uni08BF (U+08BF): found 6, expected one of: {3, 4}
    • uni06EE (U+06EE): found 3, expected one of: {0, 2}
    • uni075A (U+075A): found 3, expected one of: {2}
    • uni0692 (U+0692): found 3, expected one of: {2}
    • uni0695 (U+0695): found 3, expected one of: {0, 2}
    • uni06EF (U+06EF): found 3, expected one of: {2}
    • uni08B2 (U+08B2): found 4, expected one of: {3, 0}
    • uni0636 (U+FEBD): found 2, expected one of: {3}
    • uni06FB (U+06FB): found 3, expected one of: {5, 4}
    • uni063A (U+FECD): found 3, expected one of: {2}
    • uni0642 (U+FED5): found 3, expected one of: {4}
    • uni0643 (U+FED9): found 3, expected one of: {2}
    • uni06AC (U+06AC): found 4, expected one of: {3, 6, 2}
    • uni06AE (U+06AE): found 6, expected one of: {4, 8, 5}
    • uni077F (U+077F): found 5, expected one of: {4, 7, 3}
    • uni08B4 (U+08B4): found 4, expected one of: {3, 6}
    • uni08C2 (U+08C2): found 4, expected one of: {3, 2}
    • uni0769 (U+0769): found 4, expected one of: {3}
    • uni0889 (U+0889): found 3, expected one of: {2}
    • uni06FF (U+06FF): found 3, expected one of: {4, 2}
    • uni0624 (U+FE85): found 2, expected one of: {3}
    • uni063D (U+063D): found 3, expected one of: {2}
    • uni06CE (U+06CE): found 3, expected one of: {2, 0}
    • uniFC09 (U+FC09): found 3, expected one of: {2, 5}
    • uniFC0A (U+FC0A): found 5, expected one of: {4, 8, 3}
    • uniFC0F (U+FC0F): found 4, expected one of: {2, 6, 3}
    • uniFC10 (U+FC10): found 6, expected one of: {5, 3, 8}
    • uniFC3D (U+FC3D): found 2, expected one of: {1, 4}
    • uniFC3E (U+FC3E): found 4, expected one of: {2, 3, 6}
    • uniFC42 (U+FC42): found 3, expected one of: {2, 1}
    • uniFC43 (U+FC43): found 2, expected one of: {4, 6, 1}
    • uniFC4F (U+FC4F): found 3, expected one of: {2, 5}
    • uniFC59 (U+FC59): found 4, expected one of: {3}
    • uniFC5A (U+FC5A): found 6, expected one of: {5}
    • uniFC67 (U+FC67): found 4, expected one of: {3, 7, 5}
    • uniFC6A (U+FC6A): found 3, expected one of: {4, 5, 2}
    • uniFC6B (U+FC6B): found 4, expected one of: {6, 5, 3}
    • uniFC6D (U+FC6D): found 4, expected one of: {6, 5, 3}
    • uniFC83 (U+FC83): found 2, expected one of: {5, 1}
    • uniFC84 (U+FC84): found 4, expected one of: {3, 7, 2}
    • uniFC8A (U+FC8A): found 3, expected one of: {5, 4, 2}
    • uniFC8B (U+FC8B): found 4, expected one of: {6, 3, 5}
    • uniFC8D (U+FC8D): found 4, expected one of: {6, 5, 3}
    • uniFC95 (U+FC95): found 4, expected one of: {3}
    • uniFCCC (U+FCCC): found 3, expected one of: {1, 2}
    • uniFCFB (U+FCFB): found 2, expected one of: {5, 4, 1}
    • uniFD0E (U+FD0E): found 2, expected one of: {5, 3, 1}
    • uniFD17 (U+FD17): found 2, expected one of: {1, 7, 5}
    • uniFD2B (U+FD2B): found 3, expected one of: {2, 6, 4}
    • uniFB70 (U+FB70): found 5, expected one of: {4, 6}
    • uniFB79 (U+FB79): found 4, expected one of: {3, 2}
    • uniFB75 (U+FB75): found 4, expected one of: {2, 3}
    • uniFB81 (U+FB81): found 6, expected one of: {5, 3}
    • uniFB77 (U+FB77): found 4, expected one of: {2, 3}
    • uniFB73 (U+FB73): found 4, expected one of: {2, 3}
    • uniFB7F (U+FB7F): found 6, expected one of: {3, 5, 4}
    • uniFB6F (U+FB6F): found 7, expected one of: {4, 6}
    [code: contour-count]

Detect any interpolation issues in the font.

Check ID: interpolation_issues
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

    Glyph uni06DE has interpolation issues:

    • Contour order mismatch: [0, 1, 2, 3, 4, 5] in default vs [0, 3, 2, 1, 4, 5] in wght=100
    • Contour 1 becomes underweight in wght=100 compared to default
    • Contour 3 becomes underweight in wght=100 compared to default
    [code: glyph]

Ensure indic fonts have the Indian Rupee Sign glyph.

Check ID: rupee
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

    Font is missing the Indian Rupee Sign glyph. Please add a glyph for Indian Rupee Sign (₹) at codepoint U+20B9.

    [code: missing-rupee]

Check font contains no unreachable glyphs

Check ID: unreachable_glyphs
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

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

    • uni06BA.medi
    • uni06BA.init
    • uni06F7.mark
    [code: unreachable-glyphs]

Glyph names are all valid?

Check ID: valid_glyphnames
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

    The following glyph names are too long: "twodotshorizontalabovear.diagonal, twodotshorizontalabove_tahabovear, twodotshorizontalbelow_tahabovear, twodotshorizontalcenter_tahabovear"

    [code: legacy-long-names]

Whitespace glyphs have ink?

Check ID: whitespace_ink
🔥 NotoSansArabic[wdth,wght].ttf
  • 🔥 FAIL

    The following glyphs have ink; they should be replaced by an empty glyph:

    • uni200D
    • uni06DD
    • uni200C
    • uni0890
    • uni0600
    • uni08E2
    • uni0605
    • uni200F
    • uni0891
    • uni0604
    • uni0603
    • uni0602
    • uni200E
    • uni0601
    [code: has-ink]

Metadata Checks

Check for codepoints not covered by METADATA subsets.

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

    fonts/NotoSansArabic/googlefonts/variable-ttf/NotoSansArabic[wdth,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: tifinagh, cherokee, math, coptic
    • U+0306 COMBINING BREVE: try adding one of: old-permic, tifinagh
    • U+0307 COMBINING DOT ABOVE: try adding one of: duployan, malayalam, old-permic, coptic, hebrew, math, syriac, canadian-aboriginal, tai-le, tifinagh, todhri
    • U+030A COMBINING RING ABOVE: try adding one of: syriac, duployan
    • 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+200F RIGHT-TO-LEFT MARK: try adding one of: phags-pa, thaana, hebrew, syriac, nko
    • U+202F NARROW NO-BREAK SPACE: try adding one of: mongolian, phags-pa, yi
    • U+221A SQUARE ROOT: try adding math
    • U+25CC DOTTED CIRCLE: try adding one of: chakma, mahajani, marchen, mende-kikakui, miao, zanabazar-square, lepcha, bhaiksuki, meetei-mayek, modi, malayalam, bassa-vah, oriya, sundanese, khojki, music, tamil, bengali, tai-tham, yi, myanmar, khmer, dogra, javanese, hanunoo, soyombo, takri, thaana, tibetan, mongolian, tifinagh, warang-citi, buginese, rejang, cham, coptic, kannada, tai-viet, math, osage, ahom, masaram-gondi, caucasian-albanian, saurashtra, sogdian, psalter-pahlavi, grantha, wancho, batak, newa, syloti-nagri, devanagari, kaithi, old-permic, phags-pa, tagalog, lao, mandaic, manichaean, siddham, gujarati, gurmukhi, syriac, tagbanwa, brahmi, elbasan, limbu, armenian, hanifi-rohingya, adlam, nko, sinhala, tai-le, kayah-li, pahawh-hmong, telugu, tirhuta, gunjala-gondi, khudawadi, canadian-aboriginal, new-tai-lue, symbols, hebrew, thai, balinese, duployan, buhid, kharoshthi, sharada

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

    [code: unreachable-subsetting]

Glyphset Checks

Shapes languages in all GF glyphsets.

Check ID: googlefonts/glyphsets/shape_languages
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

    Warning language shaping:

    Message Languages
    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: * ca_Latn (Catalan)
    The following auxiliary characters are missing from the font: Ŀ
    The following auxiliary characters are missing from the font: ŀ
    Auxiliary orthography codepoints: * nb_Latn (Norwegian Bokmål)
    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: ŋ
    The following auxiliary characters are missing from the font: ŧ
    Auxiliary orthography codepoints: * de_Latn (German)
    The following auxiliary characters are missing from the font: ſ * fr_Latn (French)
    Auxiliary orthography codepoints: * en_Latn (English)
    The following auxiliary characters are missing from the font: ʻ
    Auxiliary orthography codepoints: * fi_Latn (Finnish)
    The following auxiliary characters are missing from the font: Ǥ
    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: Ʒ
    The following auxiliary characters are missing from the font: Ǯ
    The following auxiliary characters are missing from the font: ǥ
    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: ʒ
    The following auxiliary characters are missing from the font: ǯ
    [code: warning-language-shaping]

Font has correct separator glyphs?

Check ID: googlefonts/separator_glyphs
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

    The following separator glyphs are missing:

    • U+2028
    • U+2029
    [code: missing-separator-glyphs]

Font File Checks

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

Check ID: googlefonts/meta/script_lang_tags
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

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

    [code: lacks-meta-table]

Shaping Checks

Ensure dotted circle glyph is present and can attach marks.

Check ID: dotted_circle
🔥 NotoSansArabic[wdth,wght].ttf
  • 🔥 FAIL

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

    • uni06DB
    • uni06DA
    • uni0617
    • uni06DC
    • uni08D5
    • uni0615
    • uni08D6
    • uni08D7
    • uni06D8
    • uni06E8
    • uni06D9
    • uni08CC
    • uni08DB
    • uni08DC
    • uni08DA
    • uni08D4
    • uni08DE
    • uni08DD
    • uni08DF
    • uni06D6
    • uni06D7
    • uni0616
    • uni0898
    [code: unattached-dotted-circle-marks]

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

Check ID: soft_dotted
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

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

    • į̃

    • į̀

    • į́

    • į̌

    • į̂

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

    • į̨̃

    • į̨̋

    • į̨̇

    • į̨̈

    • į̨̊

    • į̨̀

    • į̨́

    • į̨̆

    • į̨̌

    • į̨̂

    • į̨̄

    • į̦̃

    • į̦̋

    • į̦̇

    • į̦̈

    • į̦̊

    • į̦̀

    • į̦́

    • į̦̆

    • į̦̌

    • į̦̂

    • į̦̄

    • į̧̃

    • į̧̋

    • į̧̇

    • į̧̈

    • į̧̊

    • į̧̀

    • į̧́

    • į̧̆

    • į̧̌

    • į̧̂

    • į̧̄

    • į̋

    • į̇

    • į̈

    • į̊

    • į̆

    [code: soft-dotted]

Outline Checks

Check there are no overlapping path segments

Check ID: overlapping_path_segments
⚠️ NotoSansArabic[wdth,wght].ttf
  • ⚠️ WARN

    The following glyphs have overlapping path segments:

    • uni06CD (U+06CD): Line(Line { p0: (72.0, 176.0), p1: (144.0, 148.0) }) has the same coordinates as a previous segment.
    • uniFEF5 (U+FEF5): Line(Line { p0: (398.0, 334.0), p1: (356.0, 269.0) }) has the same coordinates as a previous segment.
    • uniFEF7 (U+FEF7): Line(Line { p0: (398.0, 334.0), p1: (356.0, 269.0) }) has the same coordinates as a previous segment.
    • uniFEF9 (U+FEF9): Line(Line { p0: (398.0, 334.0), p1: (356.0, 269.0) }) has the same coordinates as a previous segment.
    • uniFEFB (U+FEFB): Line(Line { p0: (398.0, 334.0), p1: (356.0, 269.0) }) has the same coordinates as a previous segment.
    [code: overlapping-path-segments]