Complete guide to migrating your BigCommerce store to SvelteKit. Leave BigCommerce's revenue-based plan limits force upgrades as you grow behind and get svelte compiles to vanilla js. Free migration tool included.
You can migrate from BigCommerce 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
SaaS e-commerce with headless capabilities. Growing e-commerce businesses wanting headless capabilities without transaction fees, but these limitations push teams toward modern alternatives.
Revenue-based plan limits force upgrades as you grow
This is the most common reason teams migrate away from BigCommerce. SvelteKit eliminates this issue entirely.
Smaller app ecosystem compared to Shopify
With SvelteKit, svelte compiles to vanilla js — smallest possible bundle sizes.
Stencil theme framework has a steep learning curve
Modern architectures like SvelteKit are designed to avoid this from the ground up.
Fewer design themes available
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 | BigCommerce | SvelteKit |
|---|---|---|
| Ease of Use | ⭐⭐⭐ 3/5 | ⭐⭐⭐⭐ 4/5 |
| Performance | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐⭐ 5/5 |
| Flexibility | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐ 4/5 |
| Cost | ⭐⭐ 2/5 | ⭐⭐⭐⭐⭐ 5/5 |
| Scalability | ⭐⭐⭐⭐ 4/5 | ⭐⭐⭐⭐ 4/5 |
| Ecosystem | ⭐⭐⭐ 3/5 | ⭐⭐ 2/5 |
| Language | Proprietary / Stencil templates | JavaScript/TypeScript (Svelte) |
| Pricing | $39-399/month | Free (open-source) |
| Open Source | No | 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 BigCommerce 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 BigCommerce 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 BigCommerce to SvelteKit makes the most sense if you're experiencing revenue-based plan limits force upgrades as you grow or outgrowing BigCommerce's architecture. SvelteKit is best for teams wanting excellent performance with a simpler, more intuitive framework.
You should migrate if: your BigCommerce 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 BigCommerce site benefits from no transaction fees on any plan (unlike shopify) and you don't have JavaScript/TypeScript developers on your team.
The migration itself is straightforward with LeaveWP — enter your BigCommerce 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.
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