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 |
---|---|---|---|---|---|---|
2 | 0 | 4 | 8 | 43 | 9 | 180 |
1% | 0% | 2% | 3% | 17% | 4% | 73% |
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
⚠️⏩⏩⏩⏩⏩⏩⏩ℹ️Check 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.
⚠️ Kalnia[wdth,wght].ttf
-
⚠️ WARN
Interpolation issues were found in the font:
[code: interpolation-issues]- Contour 1 in glyph 'X': becomes underweight between wght=100,wdth=125 and wght=700,wdth=100. - Contour 2 in glyph 'X': becomes underweight between wght=100,wdth=125 and wght=700,wdth=100. - Contour 0 in glyph 'AE': becomes underweight between wght=100,wdth=125 and wght=700,wdth=100.
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.
🔥 Kalnia[wdth,wght].ttf
-
⚠️ WARN
Article page is too short!
[code: length-requirements-not-met] -
🔥 FAIL
Image is too large:
2400 x 1350 pixels
Max resolution allowed:
[code: image-too-large]2048 x 1024 pixels
-
🔥 FAIL
Image is too large:
2400 x 1350 pixels
Max resolution allowed:
[code: image-too-large]2048 x 1024 pixels
-
🔥 FAIL
Image is too large:
2400 x 1158 pixels
Max resolution allowed:
[code: image-too-large]2048 x 1024 pixels
-
🔥 FAIL
Image is too large:
2400 x 1350 pixels
Max resolution allowed:
[code: image-too-large]2048 x 1024 pixels
-
✅ PASS
ok
Metadata Checks
⚠️⏩⏩ℹ️Does 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'.
METADATA.pb subsets should be alphabetically ordered.
Ensure METADATA.pb lists all font binaries.
METADATA.pb: check if fonts field only has unique "full_name" values.
METADATA.pb: check if fonts field only contains unique style:weight pairs.
Check for codepoints not covered by METADATA subsets.
⚠️ Kalnia[wdth,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: tifinagh, canadian-aboriginal, yi
- 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+02DD DOUBLE ACUTE ACCENT: not included in any glyphset definition
- U+0306 COMBINING BREVE: try adding one of: tifinagh, old-permic
- U+030A COMBINING RING ABOVE: try adding syriac
- U+030B COMBINING DOUBLE ACUTE ACCENT: try adding one of: osage, 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+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+2021 DOUBLE DAGGER: try adding adlam
- U+2030 PER MILLE SIGN: try adding adlam
- 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:
[code: unreachable-subsetting]latin
,latin-ext
,math
,menu
Check for METADATA subsets with zero support.
METADATA.pb font.filename field contains font name in right format?
METADATA.pb font.full_name field contains font name in right format?
Check name ID 25 to end with "Italic" for Italic VFs.
METADATA.pb font.post_script_name field contains font name in right format?
Glyphset Checks
🔥Shapes languages in all GF glyphsets.
🔥 Kalnia[wdth,wght].ttf
-
🔥 FAIL
GF_Latin_Core glyphset:
Language FAIL messages nl_Latn (Dutch) Shaper didn't attach acutecomb to uni0237 ^ Shaper didn't attach acutecomb to J
Description Checks
🔥🔥⚠️⏩⏩⏩⏩⏩⏩Does DESCRIPTION file contain broken links?
DESCRIPTION.en_us.html should end in a 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.
Does DESCRIPTION file contain a upstream Git repo URL?
Check the description doesn't contain unsupported html elements
DESCRIPTION.en_us.html must have more than 200 bytes.
🔥 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
🔥 Kalnia[wdth,wght].ttf
-
🔥 FAIL
This font has both a DESCRIPTION.en_us.html file and an ARTICLE.en_us.html file. In this case the description must be deleted.
[code: description-and-article]
URLs on DESCRIPTION file must not display http(s) prefix.
Is this a proper HTML snippet?
Name table checks
⚠️⏩Combined length of family and style must not exceed 32 characters.
Check family name for GF Guide compliance.
Check copyright namerecords match license file.
⚠️ Kalnia[wdth,wght].ttf
-
⚠️ WARN
Please consider updating the url from 'https://scripts.sil.org/OFL' to 'https://openfontlicense.org'.
[code: old-url]
License URL matches License text on name table?
Name table entries should not contain line-breaks.
Name table strings must not contain the string 'Reserved Font Name'.
Substitute copyright, registered and trademark symbols in name table entries.
Repository Checks
⚠️⏩⏩Check OFL body text is correct.
⚠️ Kalnia[wdth,wght].ttf
-
⚠️ WARN
The OFL.txt body text is incorrect. Please use https://github.com/googlefonts/Unified-Font-Repository/blob/main/OFL.txt as a template. You should only modify the first line.
Lines changed:
+ \n
[code: incorrect-ofl-body-text]
Check license file has good copyright string.
Directory name in GFonts repo structure must match NameID 1 of the regular.
A font repository should not include FontBakery report files
Check upstream.yaml file contains all required fields
A static fonts directory, if present, must contain manually hinted fonts
A font repository should not include ZIP files
Shaping Checks
⚠️⏩⏩⏩Check that texts shape as per expectation
Check that no forbidden glyphs are found while shaping
Check that no collisions are found while shaping
Ensure dotted circle glyph is present and can attach marks.
Ensure soft_dotted characters lose their dot when combined with marks that replace the dot.
⚠️ Kalnia[wdth,wght].ttf
-
⚠️ WARN
The dot of soft dotted characters should disappear in other cases, for example: ĩ̦ ĭ̦ i̦̇ i̦̊ i̦̋ ǐ̦ i̦̒ j̦̀ j̦́ ĵ̦ j̦̃ j̦̄ j̦̆ j̦̇ j̦̈ j̦̊ j̦̋ ǰ̦ j̦̒ į̦̀
Your font fully covers the following languages that require the soft-dotted feature: Navajo (Latn, 166,319 speakers), Lithuanian (Latn, 2,357,094 speakers).
Your font does not cover the following languages that require the soft-dotted feature: Dii (Latn, 71,000 speakers), Cicipu (Latn, 44,000 speakers), Nzakara (Latn, 50,000 speakers), Mundani (Latn, 34,000 speakers), South Central Banda (Latn, 244,000 speakers), Bete-Bendi (Latn, 100,000 speakers), Bafut (Latn, 158,146 speakers), Makaa (Latn, 221,000 speakers), Belarusian (Cyrl, 10,064,517 speakers), Sar (Latn, 500,000 speakers), Zapotec (Latn, 490,000 speakers), Kom (Latn, 360,685 speakers), Kpelle, Guinea (Latn, 622,000 speakers), Ebira (Latn, 2,200,000 speakers), Koonzime (Latn, 40,000 speakers), Mfumte (Latn, 79,000 speakers), Nateni (Latn, 100,000 speakers), Dan (Latn, 1,099,244 speakers), Ejagham (Latn, 120,000 speakers), Avokaya (Latn, 100,000 speakers), Basaa (Latn, 332,940 speakers), Ngbaka (Latn, 1,020,000 speakers), Aghem (Latn, 38,843 speakers), Southern Kisi (Latn, 360,000 speakers), Ijo, Southeast (Latn, 2,471,000 speakers), Mango (Latn, 77,000 speakers), Gulay (Latn, 250,478 speakers), Ekpeye (Latn, 226,000 speakers), Igbo (Latn, 27,823,640 speakers), Ukrainian (Cyrl, 29,273,587 speakers), Dutch (Latn, 31,709,104 speakers), Lugbara (Latn, 2,200,000 speakers), Yala (Latn, 200,000 speakers), Fur (Latn, 1,230,163 speakers), Vute (Latn, 21,000 speakers), Ma’di (Latn, 584,000 speakers).
[code: soft-dotted]
Font File Checks
💥💥⚠️⚠️⏩⏩⏩⏩⏩⏩ℹ️ℹ️ℹ️ℹ️ℹ️ℹ️Are there unwanted Apple tables?
Checking file is named canonically.
Does the font contain less than 150 CJK characters?
Check font follows the Google Fonts CJK vertical metric schema
Check if the vertical metrics of a CJK family are similar to the same family hosted on Google Fonts.
💥 Kalnia[wdth,wght].ttf
-
💥 ERROR
'manifest'
[code: error]
Color layers should have a minimum brightness
Check font has the expected color font tables.
Put an empty glyph on GID 1 right after the .notdef glyph for COLRv0 fonts.
EPAR table present in font?
Ensure files are not too large.
Copyright notices match canonical pattern in fonts
Check font names are correct
Checking OS/2 fsType does not impose restrictions.
Check variable font instances
All name entries referenced by fvar instances exist on the name table?
Is the Grid-fitting and Scan-conversion Procedure ('gasp') table set to optimize rendering?
Validate defaults on fvar table match registered fallback names in GFAxisRegistry.
Check glyphs do not have components which are themselves components.
Check Google Fonts glyph coverage.
Font has ttfautohint params?
Show hinting filesize impact.
PPEM must be an integer on hinted fonts.
Is there kerning info for non-ligated sequences?
⚠️ Kalnia[wdth,wght].ttf
-
⚠️ WARN
GPOS table lacks kerning info for the following non-ligated sequences:
[code: lacks-kern-info]- f + b - f + f - f + h - f + i - f + j - f + k - f + l
Are there caret positions declared for every ligature?
Ensure variable fonts include an avar table.
Ensure fonts have ScriptLangTags declared on the 'meta' table.
Check small caps glyphs are available.
Are there non-ASCII characters in ASCII-only NAME table entries?
Description strings in the name table must not exceed 200 characters.
Make sure family name does not begin with a digit.
Font has all mandatory 'name' table entries?
Version format is correct in 'name' table?
Ensure fonts do not contain any pre-production tables.
Font has old ttfautohint applied?
OS/2.fsSelection bit 7 (USE_TYPO_METRICS) is set in all fonts.
Check font can render its own name.
Checking direction of slnt axis angles
Font enables smart dropout control in "prep" table instructions?
Check axis ordering on the STAT table.
Validate STAT particle names and values match the fallback names in GFAxisRegistry.
Ensure Stylistic Sets have description.
Stricter unitsPerEm criteria for Google Fonts.
Check the OS/2 usWeightClass is appropriate for the font's best SubFamily name.
The variable font 'wght' (Weight) axis coordinate must be 700 on the 'Bold' instance.
Ensure that all variable font files have the same set of axes and axis ranges.
Ensure VFs with duplexed axes do not vary horizontal advance.
Check variable font instances don't have duplicate names
Check a static ttf can be generated from a variable font.
EXPERIMENTAL CHECK - Since 2024/Mar/27
Ensure the font's instances are in the correct order.
Check that variable fonts have an HVAR table.
Ensure VFs do not contain the ital axis.
Checking OS/2 achVendID.
⚠️ Kalnia[wdth,wght].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 font follows the Google Fonts vertical metric schema
Check if the vertical metrics of a family are similar to the same family hosted on Google Fonts.
💥 Kalnia[wdth,wght].ttf
-
💥 ERROR
'manifest'
[code: error]