blink elements are deprecated and must not be used

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Rule Description

This rule requires that no <blink> elements are present. Flashing text can be difficult to read and blinking objects can be difficult to activate. The associated automated check finds the presence of all <blink> elements so that they can be removed.

The Algorithm, in Simple Terms

Checks to make sure that the <blink> element is never used

Why this is Important

As the name suggests, <blink> elements cause content to flash. Though you may like the effect, blinking text can be difficult to read, and blinking objects (links, buttons, etc.) can be difficult to activate.

How to Fix the Problem

Remove all <blink> elements.

Compliance Data & User Impact

User Impact: Minor
Disabilities Affected:
  • Low Vision
  • Cognitive
  • Mobility/Dexterity
Issue Type:
  • WCAG 2.0 (A): MUST
  • WCAG 2.1 (A): MUST
  • Section 508: MUST
WCAG Success Criteria:
  • 2.2.2 Pause, Stop, Hide
Section 508 Guidelines:
  • 1194.22 (j) Screen flicker frequency

Related Deque University Course Pages

Other Related Resources

Additional Information

Relevant Technologies:
  • HTML 4
  • HTML5
Test Reliability: Automated testing is possible, with high accuracy
Rule ID: blink