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Migration Service

Migrate Webflow to Next.js | Full Technical Migration

Your Webflow Site Hits a 10,000-Item Wall—Before You Can Scale

  • Cap at 10,000 CMS items blocks content expansion the moment your catalog or blog scales past Webflow's hard limit
  • Pay $200+/month for hosting and team seats while performance stays flat—no speed gains, just recurring charges
  • Suffer mobile Lighthouse scores in the 45–65 range because Webflow generates bloated HTML and unoptimized CSS
  • Lose Git version control and CI/CD pipelines—your engineering team can't branch, test, or deploy like modern workflows demand
  • Hit a wall on custom backend logic—authentication, user dashboards, and API integrations require duct-taped third-party services
  • Ship mobile Lighthouse scores of 95–100 with Next.js automatic image optimization and tree-shaken JavaScript output
  • Store unlimited CMS items in Supabase Postgres with zero per-item pricing—scale your content library without ceiling anxiety
  • Deploy to Vercel and deliver sub-300ms TTFB globally with automatic CI/CD triggered on every Git push to main
  • Own your entire codebase in GitHub—no vendor lock-in, no proprietary export formats, full portability if you ever migrate again
  • Build API routes, middleware, and server-side rendering in the same repo—authentication, dashboards, and custom logic ship natively

Webflow got you to launch. It handled your first 20 pages, your blog, maybe even some gated content. But now you're hitting walls.

Your CMS collection has 8,000 items and you're eyeing the 10,000 ceiling. Your hosting bill crept past $200/month once you added team seats and CMS plans. Your developers can't use Git, can't write tests, and can't deploy through a proper CI/CD pipeline. Every custom interaction requires embedded scripts held together with duct tape.

The generated HTML is bloated. Lighthouse scores on mobile sit between 45 and 65. Your TTFB hovers around 1.5 seconds because Webflow's CDN isn't optimized for dynamic content. And the moment you need authentication, a user dashboard, or any real backend logic, you're bolting on third-party services with no cohesive architecture.

This isn't a knock on Webflow. It's a recognition that your site outgrew it.

Why Leave Webflow

Webflow got you to launch. It handled your first 20 pages, your blog, maybe even some gated content. But now you're hitting walls.

Your CMS collection has 8,000 items and you're eyeing the 10,000 ceiling. Your hosting bill crept past $200/month once you added team seats and CMS plans. Your developers can't use Git, can't write tests, and can't deploy through a proper CI/CD pipeline. Every custom interaction requires embedded scripts held together with duct tape.

The generated HTML is bloated. Lighthouse scores on mobile sit between 45 and 65. Your TTFB hovers around 1.5 seconds because Webflow's CDN isn't optimized for dynamic content. And the moment you need authentication, a user dashboard, or any real backend logic, you're bolting on third-party services with no cohesive architecture.

This isn't a knock on Webflow. It's a recognition that your site outgrew it.

What Next.js + Supabase + Vercel Gets You

The migration target isn't just "a React app." It's a production-grade architecture built on three pillars:

Next.js as the Frontend Runtime

Next.js gives you server-side rendering, static generation, incremental static regeneration, API routes, middleware, and image optimization out of the box. Every page ships as optimized HTML. Client-side JavaScript loads only when needed. You get full control over routing, data fetching strategy, and rendering mode per page.

Supabase as Your Headless CMS and Backend

Instead of paying $40/month for a headless CMS with another dashboard your team has to learn, we wire up Supabase. You get a Postgres database with a REST API auto-generated from your schema, real-time subscriptions, file storage for media, and row-level security for any authenticated features. Your content editors get a custom admin interface built around your exact content model—no field limits, no per-item pricing, no collection caps.

For teams that prefer a traditional CMS editing experience, we can layer Directus or Payload CMS on top of Supabase's Postgres instance. Best of both worlds.

Vercel for Deployment

Every push to main triggers a production deployment. Every pull request gets a preview URL. Edge functions handle middleware. The global CDN delivers sub-300ms TTFB worldwide. You pay for what you use—and for most marketing sites, that's close to $0 on the Pro plan.

Our Migration Process

We've migrated dozens of Webflow sites to Next.js. Here's exactly how we do it.

Phase 1: Audit and Architecture (Week 1)

We crawl your Webflow site and build a complete inventory: every page, every CMS collection, every form, every custom script, every third-party integration. We map your current URL structure, document your metadata, and screenshot every unique layout.

Deliverables: site map, component inventory, URL redirect map, CMS schema design, integration checklist, and a scoped proposal with fixed pricing.

Phase 2: CMS and Data Migration (Week 2)

We export all Webflow CMS content to structured JSON via Webflow's API. Blog posts, case studies, team members, testimonials—everything gets cleaned, transformed, and imported into Supabase with proper relational schemas. Media files move to Supabase Storage or Cloudflare R2, with URLs mapped for redirect handling.

Rich text content gets converted from Webflow's proprietary format to portable markdown or structured JSON. No formatting gets lost.

Phase 3: Component Build (Weeks 2-4)

Every Webflow section becomes a typed React component. We use Tailwind CSS for styling and match your existing design pixel-for-pixel—unless you've opted for a redesign. Components are built in a composable pattern so your team can assemble new pages without touching code.

Webflow interactions and animations get rebuilt with Framer Motion. Custom embeds and scripts are replaced with proper React integrations. Forms connect directly to your CRM through Next.js API routes instead of fragile Zapier chains.

Phase 4: Integration Reconnection (Week 4)

HubSpot, Google Analytics 4, Google Tag Manager, Intercom, LinkedIn Insight, Meta Pixel, cookie consent—every integration gets reconnected and verified. We build a QA matrix and test each one fires correctly across page types, user flows, and consent states.

Phase 5: SEO Preservation and 301 Redirects (Week 4-5)

This is where migrations live or die.

SEO Preservation Strategy

We treat SEO preservation as a first-class engineering concern, not an afterthought.

301 Redirect Mapping

Every Webflow URL gets a corresponding 301 redirect configured in next.config.js. This includes:

  • All page routes (including /blog/slug patterns)
  • CMS collection pages with dynamic slugs
  • Webflow's auto-generated pagination URLs
  • Any legacy redirects already configured in Webflow
  • Image URLs if you're changing CDN providers

We validate the redirect map programmatically by crawling your live Webflow site and confirming every URL resolves to a 200 on the new Next.js build.

Metadata Parity

Every page's title tag, meta description, canonical URL, Open Graph tags, and structured data (JSON-LD) are migrated exactly. We diff old vs. new metadata across every indexed URL before launch.

Sitemap and Robots.txt

Next.js generates a dynamic XML sitemap from your Supabase content. We submit it to Google Search Console immediately after DNS cutover and monitor indexing daily for two weeks.

Performance as an SEO Signal

Moving from Webflow's 45-65 mobile Lighthouse score to 95-100 isn't vanity. Core Web Vitals are a ranking factor. Faster TTFB, smaller bundles, and optimized images directly improve your search visibility.

Staged Cutover

For high-traffic sites, we run a phased migration. The blog section goes first—we watch rankings for a week, confirm nothing dropped, then migrate the rest. Limits the blast radius if something goes sideways.

Timeline and Pricing

Timelines depend on site complexity:

  • Marketing site (up to 15 pages + blog): 3-4 weeks, starting at $4,900
  • Complex site (15-50 pages + multiple CMS collections + integrations): 5-7 weeks, starting at $9,800
  • Web application (auth, dashboards, API logic): 8-12 weeks, starting at $18,000

Every engagement starts with a free migration audit. We review your Webflow site, identify technical debt, map the architecture, and deliver a fixed-price proposal. No hourly billing surprises.

What Happens After Launch

You own everything. The codebase lives in your GitHub repo. The database is in your Supabase project. The deployment runs on your Vercel account. If you want to bring development in-house six months later, you can—no vendor lock-in, no proprietary formats, no export fees.

We offer optional retainer packages for ongoing development, but the architecture is designed so your team can ship content updates, new pages, and minor changes without us.

How It Works

The migration process

01

Discovery & Audit

We map every page, post, media file, redirect, and plugin. Nothing gets missed.

02

Architecture Plan

New stack designed for your content structure, SEO requirements, and performance targets.

03

Staged Migration

Content migrated in batches. Each batch verified before the next begins.

04

SEO Preservation

301 redirects, canonical tags, sitemap, robots.txt — every ranking signal carried over.

05

Launch & Monitor

DNS cutover with zero downtime. 30-day monitoring period included.

Before vs After

Webflow vs Next.js

Metric Webflow Next.js
Lighthouse Mobile 45-65 95-100
TTFB 1.2-2.5s <0.3s
Build Time 30-90s (no ISR) <5s with ISR
Hosting Cost $79-212/mo $0-20/mo
Developer Experience No Git, no CI/CD Full Git + Vercel CI/CD
API/Headless Read-only API, no backend Full API routes + Supabase backend
FAQ

Common questions

WebflowからNext.jsへ移行するとSEOランキングを失いますか?

正しく移行されれば、失う心配はありません。すべてのURLに対して301リダイレクトを実装し、すべてのページでメタデータの完全一致を保ち、DNS切り替え直後にGoogle Search Consoleに更新されたサイトマップを送信します。移行後2週間のランキングを監視します。実際のところ、ほとんどのクライアントは起動後30日以内にランキングが改善します。Core Web Vitalsスコアが向上するため、そのようなことが起こります。

移行時にWebflow CMSコンテンツをどのように処理しますか?

Webflow APIを使用してすべてのCMSコレクションを構造化JSONにエクスポートし、データをクリーニングして変換し、適切なリレーショナルスキーマを使用してSupabaseにインポートします。リッチテキストフィールドはWebflowの独自形式からポータブルマークダウンに変換されます。メディアファイルはSupabase StorageまたはCloudflare R2に移動され、リダイレクト用のURLマッピングが配置されます。

ヘッドレスCMSとしてSupabaseではなくSanityやContentfulを使用しないのはなぜですか?

Supabaseは、1つのプラットフォームで完全なPostgresデータベース、ファイルストレージ、認証、自動生成API を提供します。アイテムあたりの価格設定なし、コレクション制限なし。従来のCMSエディターの経験を望むチームの場合、同じPostgresインスタンス上にPayload CMSまたはDirectusをレイヤーできます。慣れた編集体験を得られ、下部にはデータベースの柔軟性があり、ベンダーロックインはありません。

Webflow to Next.js移行にはどのくらいの時間がかかりますか?

最大15ページと1つのブログを含む標準マーケティングサイトは3~4週間かかります。15~50ページ、複数のCMSコレクション、サードパーティ統合を含む複雑なサイトは5~7週間です。認証とカスタムバックエンドロジックを備えた完全なWebアプリケーションは8~12週間かかります。すべてのプロジェクトは無料の監査から始まり、何かが始まる前に正確なスコープとタイムラインを決定します。

マーケティングチームは開発者なしでコンテンツを編集できますか?

絶対できます。Supabaseにあなたのコンテンツモデルに合わせた、またはあなたの編集者が慣れた経験を望む場合はPayload CMSを統合した、カスタム管理インターフェースを構築します。ブログ投稿の作成と公開、ページセクションの更新、メディア管理を独自に行うことができます。変更はVercelのビルドパイプラインを通じて自動的にデプロイされ、何もライブになる前にプレビューURL で確認できます。

移行後、Webflowのフォームと統合はどうなりますか?

すべてのフォームと統合がNext.jsで正しく再構築されます。フォームは脆弱なZapierチェーンではなく、APIルートを通じてCRMに直接接続します。分析、チャットウィジェット、トラッキングピクセル、同意管理ツールはすべて再接続され、起動前にすべてのページタイプとユーザーフロー全体で確認されます。何も見落とされないように完全なQAマトリックスを提供します。

移行後、コードを所有していますか?

完全に所有しています。コードベースはGitHubリポジトリに、データベースはSupabaseプロジェクトで実行され、デプロイメントはVercelアカウント上にあります。独自形式、エクスポート料金、ロックインはありません。後で開発を社内に持ち込みたい場合は、正確に中断したところから再開できます。

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