Complete guide to migrating your OpenCart store to SvelteKit. Leave OpenCart's code quality and architecture have not modernized well behind and get svelte compiles to vanilla js. Free migration tool included.
You can migrate from OpenCart to SvelteKit for free using LeaveWP. Enter your site URL, choose SvelteKit as the destination, and download your content — posts, pages, and media — in minutes. No API keys, passwords, or CLI tools required. Difficulty: Advanced. Estimated time: 1-3 hours.
Official docs: SvelteKit Documentation
Lightweight open-source PHP e-commerce. Small stores on a budget wanting simple, self-hosted e-commerce, but these limitations push teams toward modern alternatives.
Code quality and architecture have not modernized well
This is the most common reason teams migrate away from OpenCart. SvelteKit eliminates this issue entirely.
Security vulnerabilities require vigilant patching
With SvelteKit, svelte compiles to vanilla js — smallest possible bundle sizes.
Limited scalability for high-traffic stores
Modern architectures like SvelteKit are designed to avoid this from the ground up.
Extension quality is inconsistent
After migrating, you'll no longer need to worry about this — SvelteKit takes a fundamentally different approach.
Full-stack Svelte framework with SSR and SSG. Built with JavaScript/TypeScript (Svelte), it's teams wanting excellent performance with a simpler, more intuitive framework.
Svelte compiles to vanilla JS — smallest possible bundle sizes
Intuitive syntax — easier to learn than React or Vue
Excellent developer experience with fast HMR
File-based routing with SSR, SSG, and SPA modes
SvelteKit is open-source and free to use. You own your code and data with no vendor lock-in. Deploy to any host that supports JavaScript/TypeScript, or use managed platforms like Vercel and Netlify for zero-config deployments.
Side-by-side comparison based on real platform characteristics
| Metric | OpenCart | SvelteKit |
|---|---|---|
| Ease of Use | ⭐⭐⭐ 3/5 | ⭐⭐⭐⭐ 4/5 |
| Performance | ⭐⭐⭐ 3/5 | ⭐⭐⭐⭐⭐ 5/5 |
| Flexibility | ⭐⭐⭐ 3/5 | ⭐⭐⭐⭐ 4/5 |
| Cost | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐⭐ 5/5 |
| Scalability | ⭐⭐ 2/5 | ⭐⭐⭐⭐ 4/5 |
| Ecosystem | ⭐⭐ 2/5 | ⭐⭐ 2/5 |
| Language | PHP | JavaScript/TypeScript (Svelte) |
| Pricing | Free (self-hosted) | Free (open-source) |
| Open Source | Yes | Yes |
Ratings are based on publicly available data, documentation, and community consensus as of 2026. Individual experience may vary.
A detailed breakdown of how your OpenCart content maps to SvelteKit
What may need manual attention
Payment gateway configurations, active subscriptions, and order history are platform-specific and need manual setup on SvelteKit. Customer accounts may require a re-authentication flow.
Migrate your content in three simple steps
Enter your OpenCart site URL — LeaveWP connects automatically.
Select SvelteKit as destination and choose content options.
Download your migrated content or preview it in your browser.
Migrating from OpenCart to SvelteKit makes the most sense if you're experiencing code quality and architecture have not modernized well or outgrowing OpenCart's architecture. SvelteKit is best for teams wanting excellent performance with a simpler, more intuitive framework.
You should migrate if: your OpenCart site is slow, your hosting costs are climbing, your store needs a custom frontend, or you want to adopt a modern JAMstack architecture.
You might want to stay if: your OpenCart site benefits from lightweight and easy to install on basic hosting and you don't have JavaScript/TypeScript developers on your team.
The migration itself is straightforward with LeaveWP — enter your OpenCart URL, select SvelteKit, and download your content. The more important question is whether SvelteKit's architecture fits your team's skills and your project's long-term needs.
Explore more migration paths from OpenCart or to SvelteKit
In-depth guides and tutorials to help with your migration
Learn how to properly export your WordPress site for backup or migration. Covers database exports, media files, theme settings, and everything you need for a complete backup.
12 min readtutorialStep-by-step guide to migrating your WooCommerce store to Shopify. Covers products, customers, orders, SEO, and go-live checklist.
15 min readtutorialEverything you need to know about migrating from WordPress to Next.js. From planning to deployment, this guide covers the entire migration process.
18 min read