Rewriting Our Frontend from Angular 17 to Vue 3.5: 40% Smaller Bundles
A 12-person frontend team replaced a 3-year-old Angular 17 application with Vue 3.5, serving 2.4 million monthly active users, resulting in a 41.7% reduction in bundle size and significant performance improvements. The migration reduced first-contentful-paint by 58% and eliminated over 12,000 lines of boilerplate without customer-facing regressions. The rewrite achieved a 12-month ROI through lower CDN costs and a 22% increase in mobile conversion rates.
- ▪The Vue 3.5 migration reduced gzipped main bundle size from 187KB to 109KB, a 41.7% decrease compared to Angular 17.
- ▪First-contentful-paint improved from 2.8s to 1.2s on 4G connections, and time to interactive dropped from 4.1s to 1.9s.
- ▪The migration eliminated 12,400 lines of framework boilerplate and increased test coverage from 82% to 89%.
- ▪Mobile conversion rates increased by 22.6%, and annual CDN costs decreased by $32,000.
- ▪The project required 1,240 engineering hours over 12 weeks and delivered a full return on investment within 11 months.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3900225) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } ANKUSH CHOUDHARY JOHAL Posted on Apr 29 • Originally published at johal.in Rewriting Our Frontend from Angular 17 to Vue 3.5: 40% Smaller Bundles #rewriting #frontend #angular #smaller In Q3 2024, our 12-person frontend team replaced a 3-year-old, 142-route Angular 17 production app serving 2.4 million monthly active users with Vue 3.5, cutting total bundle size by 41.7%, reducing first-contentful-paint (FCP) by 58%, and eliminating 12,400 lines of framework boilerplate with zero…
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