Create perfect squares or circles and preserve aspect ratio when resizing and holding shift. Now in marker.js v3.5.
markerjs.com

From subtle glow, to pronounced outlines or drop shadows — apply filters to relevant marker types to improve annotation legibility or just simple visual flare. Now available in v3.3.

marker.js always had a rectangular highlight marker but the one resembling a physical highlighter was not on the menu. That changes in v3.2.

Curve marker somehow slipped through the cracks and didn't make it into the 3.0 release. Oops 🤭 Fixed in v3.1 out now.

markerjs.com

🚀 Big news! marker.js 3 is here! 🎉

Easily add image annotation feature to your web apps with the latest iteration of the popular JavaScript library. Interactive, user-friendly, and framework-agnostic!

markerjs.com