Font Analyzer
Extract detailed information from your font files
Drop your font file here
or click to browse from your computer
Supports: TTF, OTF, WOFF, WOFF2, TTC
Developer & Verifier
Developed by
Marcus Rodriguez
Lead Developer
Verified by
Sarah Mitchell
Product Designer, Font Specialist
What is Font Analysis?
Font analysis inspects the internal structure of font files, extracting metadata tables, glyph inventories, OpenType feature support, and metric values that determine how a typeface renders across platforms. Font files contain structured metadata in OpenType tables: name (identification), OS/2 (weight and width classification), head (units per em, bounding box), and post (PostScript naming).
The median Google Font contains 107 glyphs for US-ASCII subsets and 236 glyphs for Latin Extended, based on a phpied.com analysis of 1,074 fonts. The OpenType specification limits each font file to 65,535 glyphs maximum, a ceiling that CJK fonts approach with 10,000+ characters for basic coverage.
Font file anatomy includes kerning tables for letter spacing, hinting data for screen rendering at small sizes, and OpenType features for ligatures, stylistic alternates, and contextual forms.
Font metrics (ascender, descender, line gap, and x-height) determine vertical spacing and baseline alignment across TTF and OTF formats. Analyzing these values before deployment ensures consistent rendering across browsers and operating systems.
Upload a font file in TTF, OTF, WOFF, WOFF2, or TTC format to extract 15+ categories of metadata. The analyzer reports glyph count, character count, and file size alongside font properties (family, subfamily, weight class, style). Typography metrics include units per EM, x-height, cap height, ascender, descender, line gap, and underline position. OpenType feature detection identifies GPOS and GSUB tables for ligatures, kerning, small caps, and stylistic alternates. The tool also extracts copyright, license, designer, and manufacturer metadata from the name table, which is useful for font validation before deployment to production environments.
How to Use This Analyzer
Upload Your Font
Drag and drop or click to upload a TTF, OTF, WOFF, or WOFF2 font file from your device.
View Metadata
See the font's name table entries including family name, designer, copyright, and license information.
Explore Features
Check glyph count, OpenType features, supported scripts, and Unicode coverage details.
Make Decisions
Use the analysis to decide on subsetting, optimization, or whether the font meets your project needs.
Features
Font Metadata Name Table Fields
| Name ID | Field | Description |
|---|---|---|
| 0 | Copyright | Copyright notice for the font |
| 1 | Font Family | The font family name (e.g., "Roboto") |
| 2 | Font Subfamily | Style variant (e.g., "Bold Italic") |
| 9 | Designer | Name of the font designer |
| 11 | Vendor URL | URL of the font foundry or vendor |
| 13 | License | License description text |
Frequently Asked Questions
What metadata can be extracted from a font file?
What font formats are supported?
Is my font file uploaded to a server?
What are OpenType features?
How do I check Unicode coverage?
What is glyph count and why does it matter?
Related Tools & Guides
Font Subsetter
Reduce font file size by removing unused glyphs
Font Preview Generator
Preview fonts at multiple sizes, weights, and styles
Variable Font Tester
Explore variable font axes with interactive controls
Font File Anatomy
Understand the internal structure of font files
Font Metrics Reference
Technical reference for ascender, descender, and line gap values
OpenType Features Guide
Guide to ligatures, alternates, and contextual forms