WCAG (Web Content Accessibility Guidelines) is a standard from the W3C that explains how to make digital content perceivable, operable, understandable, and robust. Conformance is rated at levels A, AA, and AAA.
Why it matters
Accessible sites reach more people and reduce legal risk, since many laws and procurement rules point to WCAG, usually level AA. The guidelines cover things such as text alternatives for images, keyboard operation, captions, and sufficient color contrast.
Several versions exist, including 2.1 and 2.2, so check which one your requirement names.
Example
<img src="chart.png" alt="Uptime rose from 99.5% to 99.9% between March and June">
<button>Save</button> <!-- real button: focusable, keyboard friendly -->The alt text gives the same information to people who cannot see the image. WCAG AA asks for a text contrast ratio of at least 4.5:1 for normal text.
Common mistakes
- Relying only on automated scanners, which catch only a share of problems.
- Using color alone to show errors or status.
- Adding ARIA attributes instead of using correct native HTML elements.
Related
Get notified when this term updates
Plus occasional practical tips on uptime and monitoring, nothing else. Unsubscribe anytime.
यह पेज सामान्य जानकारी है, जिसे हमारी संपादकीय टीम ने लिखा है और दस्तावेज़ीकरण बदलने पर अपडेट किया जाता है। सर्वर और प्रदाता अलग-अलग होते हैं, इसलिए बदलाव पहले सुरक्षित तरीके से जाँचें। देखें: संपादकीय नीति और अस्वीकरण.