Success Criterion 1.4.12 "Text Spacing" is a Level AA requirement under the "perceivable" principle of WCAG 2.2. EN 301 549 clause 9.1.4.12 maps this criterion for procurement conformance.
Correct: content survives user stylesheet overrides — line-height 1.5×, letter-spacing 0.12em, word-spacing 0.16em, paragraph spacing 2× — with nothing clipped or overlapped. Incorrect: fixed-height text blocks that truncate when spacing grows. overflow:hidden plus a fixed height is the classic fail — text spacing must be able to expand.
Engine coverage: manual-only in the current audit tiers — no automated run can certify it.
Last reviewed 2026-11-02 — generated from the engine’s WCAG criterion registry.
Reading up on WCAG 1.4.12? The engine verifies this surface from the perimeter — live on sovereign EU/UK partitions.