Craft & Detail · 6 min read

Kerning, Tracking, and Leading: The Essential Guide to Spatial Typography

Understand the precise definitions, CSS properties, and practical applications of letter-spacing, line-height, and glyph adjustment.

Kerning vs. Tracking: What Is the Difference?

- **Kerning:** The selective adjustment of space between two specific adjacent glyphs (e.g., 'AV', 'To', 'Wa') to eliminate awkward visual gaps.
- **Tracking (Letter-Spacing):** The uniform spacing applied across a sequence of letters or an entire paragraph. In CSS, this is managed via `letter-spacing`.

Leading (Line-Height) Best Practices

Leading derives from the physical strips of lead printers inserted between lines of type. In digital design, line-height governs reading comfort. For body text, aim for `1.4` to `1.65` times the font size. For large display headings, tighten leading to `1.1` to `1.2` to prevent fragmented visual chunks.

Frequently Asked Questions

When should I increase tracking?
Always add positive letter-spacing (0.05em to 0.15em) when setting all-caps text or very small captions. Decrease tracking slightly on very large headlines (above 48px) to keep them tight and impactful.