White card with truncated text about ducks and a 'Read more' button; when expanded, it reveals the full article with a smooth height transition

Vue.js Read More Expansion

This Vue.js Read More Expansion solves the classic “animate to height: auto” problem. It’s a robust component that truncates long text content and allows users to reveal the full article with a smooth animation. Unlike naive implementations that guess max-height, this solution calculates the exact pixel height of the content to ensure a perfect transition every time. (Requires: Vue.js)

Technologies:
HTML SCSS JavaScript
Difficulty: Intermediate
Browser Support (as of Jan 2026):
Chrome Chrome 49+ Edge Edge 15+ Firefox Firefox 43+ Safari Safari 9.1+
Features:
Dynamic Height Calculation Smooth Transition Gradient Fade
License: MIT

See the Pen Vue.js Read More Expansion.