Firefox 145 release notes for developers
New CSS, JS and media features plus experimental security and layout APIs.
All news — Page 12
HTML’s best kept secret: the
<output>tagRediscover the forgotten HTML element that improves accessibility.
<color‑input>, a modern color picker web componentAdvanced color picker supports wide-gamut and multiple color spaces.
Searchable, collapsible sections with
hidden="until-found"Enhancing collapsible sections with progressive discovery and better find-in-page support.
Directives and the platform boundary
Tanner Linsley warns that framework directives blur the line between JS and the platform.
Harmonizer, an accessible color palette generator
Generate accessible, consistent color palettes with OKLCH, APCA, and WCAG contrast tools.
WebKit Features for Safari 26.1
SVG units support, improved CSS Anchor Positioning, and 36 fixes across CSS and WebGPU.
setHTML(), Trusted Types and the Sanitizer APINew setHTML() and Sanitizer API prevent XSS by safely inserting HTML into the DOM.
Perfectly pointed tooltips
Auto-positioned tooltips using CSS Anchor Positioning with position-area and fallbacks.
What’s new in Chrome 142
CSS style queries range syntax, if(), interestfor attribute, and unified select rendering.
Evaluating frameworks performance
Comparing 10 meta-frameworks: Marko, SolidStart, SvelteKit, Qwik lead. React has limits.
Deprecating XSLT in browsers
Chrome plans to remove XSLT by 2027 due to low usage and security risks. Other browsers agree.