diff --git a/ada-font-analyzer.html b/ada-font-analyzer.html new file mode 100644 index 0000000..3124e36 --- /dev/null +++ b/ada-font-analyzer.html @@ -0,0 +1,787 @@ + + + + + +ADA §703 Font Analyzer — Digital Signage + + + + +
+ +
+

ADA §703.5 Font Compliance Analyzer — Digital Signage

+

Curated Google Fonts evaluated against the 2010 ADA Standards for Accessible Design, Chapter 7 (Signs). Test any Google Font by name or upload a TTF/OTF file for direct metric analysis.

+
+ +
+ + + +
+ + +
+
+
+
+ + + + + +
+
25 fonts
+
+
+
+
+
Selected for download
+

Click fonts to select them

+ +
To embed in Odoo Knowledge: host this file and paste its URL into a page block using / → HTML Block or an <iframe> in the article source.
+
+
+
ADA §703.5 criteria
+
+
Sans-serif, conventional form (§703.5.3)
+
O:I width ratio 55–110% (§703.5.4)
+
Stroke weight 10–30% of height (§703.5.7)
+
Character spacing 10–35% (§703.5.8)
+
No italic/script/decorative (§703.5.3)
+

= passes with weight restrictions

+
+
+
+
+
+ + +
+
+
+
+

Test any Google Font for ADA §703.5 compliance

+

Enter a Google Font name exactly as it appears on fonts.google.com. The tool renders test characters on a canvas and measures key geometric ratios against ADA signage standards.

+
+ + +
+ + + + +
+
+
+
+
How scoring works (Google Fonts)
+
+
Canvas pixel measurement
Renders I and O to a hidden canvas at 120px, scans bounding boxes for §703.5.4 O:I ratio and §703.5.7 stroke weight. Accuracy ~±5%.
+
Style & form
Font name heuristics detect serif, script, and decorative patterns for §703.5.3 compliance.
+
Upload a TTF instead
For higher-accuracy metric analysis using the actual font binary tables, use the Upload TTF / OTF file tab.
+
+
+
+
Quick-test suggestions
+
+
+
+
+
+ + +
+
+
+
+
+ +
⇧
+
Drop a TTF, OTF, WOFF or WOFF2 file here
+
Or click to browse your files
+ +
+

+ Files are processed entirely in your browser — nothing is uploaded to any server. Analysis reads font metric tables directly from the binary file for the most accurate ADA §703.5 measurements available. +

+
+
+
+
+ + – + +
+
+
+
Live character preview
+
IO Hamburgefons
+
The quick brown fox jumps over the lazy dog
+
I O H B D 1 l 0 8 Q W M
+
+
+
Light-on-dark contrast test
+
IO Hamburgefons
+
+
+
+
–
+
–
–
+
+
+

+
+
Raw font metrics from binary tables
+ + + +
MetricValueSource
+
+

+
+
+
+
+
How TTF analysis works
+
+
Direct table parsing
Reads binary font tables using a JavaScript DataView — no server, no library. Measurements from the font's own metric data.
+
Tables read: +
    +
  • head — unitsPerEm
    • +
  • OS/2 — sCapHeight, usWeightClass, fsSelection, panose
    • +
  • hhea — ascender, lineGap
    • +
  • hmtx — advance widths for O and I
    • +
  • cmap — glyph index for O and I
    • +
  • name — family name, subfamily
    • +
+
+
Accuracy
O:I from hmtx is exact. Stroke from usWeightClass is a strong estimate; canvas provides cross-check. Combined: ±2–3% vs ±5% canvas-only.
+
Privacy
Font file never leaves your browser. All parsing runs locally in JavaScript.
+
+
+
+
ADA §703.5 — what we measure
+
+
§703.5.3 Style — Sans-serif, no italic/script/decorative. Via OS/2 fsSelection, panose bFamilyType, name table.
+
§703.5.4 O:I proportion — O width 55–110% of I height. From hmtx advance widths / sCapHeight.
+
§703.5.7 Stroke weight — I stroke 10–30% of height. From usWeightClass + canvas cross-check.
+
§703.5.8 Spacing — 10–35% of height. Condensed-variant name detection.
+
§703.5.3 Conventional form — No unusual letterforms. Via panose + subfamily name.
+
+
+
+
+
+ +
+ + + +