April 2026 Baseline monthly digest

The April 2026 Baseline monthly digest covers newly and widely available web platform features. Newly available features include the CSS contrast-color() function for automatic accessible color contrast and Math.sumPrecise() for floating-point-safe number summation. Widely available features include the HTML <search> element with implicit ARIA landmark support, WebAuthn public key extraction methods on AuthenticatorAttestationResponse, JavaScript String.prototype.isWellFormed() and toWellFormed() for handling lone surrogates in UTF-16 strings, and ARIA attribute reflection enabling dot-notation access to accessibility properties on DOM elements. The digest also highlights how Baseline supports accessibility by signaling when web platform features are mature enough for production use.