Font Ligature Tester — OpenType Features Preview
Upload fonts and test ligatures, stylistic sets, and alternates in real-time. Supports TTF, OTF, and WOFF files. Preview how text changes based on enabled OpenType features.
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Visualize How Fonts Behave with Ligatures & Features
This tool lets you test how OpenType features affect text rendering. Toggle ligatures, stylistic sets (like ss01–ss20), alternates, and contextual forms — and see how they reshape your previewed content.
Common Features You Can Toggle
| Feature Tag | Description | Example |
|---|---|---|
liga | Standard Ligatures | fi, fl, ff |
clig | Contextual Ligatures | ffi, ffl (in context) |
dlig | Discretionary Ligatures | st, ct, Th |
hlig | Historical Ligatures | long s, ct (old style) |
calt | Contextual Alternates | dynamic character shaping |
salt | Stylistic Alternates | variant shapes of characters |
ss01–ss20 | Stylistic Sets | font-specific alternates |
Use Cases
- Compare ligature-enabled vs ligature-disabled text
- Test stylistic alternates for branding or display typography
- Explore a font’s OpenType features before using in projects
- Check support for discretionary and historical ligatures
How to Use
- Upload a TTF, OTF, or WOFF font file
- Type or paste your sample preview text
- Select which features to apply — like liga, ss01, or salt
- Compare side-by-side preview with and without features
Frequently Asked Questions (FAQs)
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