{"product_id":"migration-prestashop-shopify-mode-modeste-jennah","title":"Made in france.fr Case Study: PrestaShop → Shopify Migration (Long Catalog + SEO 301\/404)","description":"\u003cdiv class=\"encadre-info\"\u003e\n\u003cstrong\u003eSummary (10 s):\u003c\/strong\u003e Case study — Made in France.fr: migration from PrestaShop to Shopify for a very large catalog, with SEO safeguarding (301 plan + 404 handling post-launch) and a navigation structure designed for long product ranges.\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUpdated on:\u003c\/strong\u003e January 25, 2026\u003cbr\u003e\u003cstrong\u003eReviewed by Marion:\u003c\/strong\u003e a Shopify Migration Expert at LobsTTer\u003c\/p\u003e\n\u003c!-- split --\u003e\n\u003cp\u003eMigrating a PrestaShop site with a \u003cstrong\u003every wide product range\u003c\/strong\u003e is not just about \"importing products.\" The real risk is twofold: \u003cstrong\u003edisorganizing the catalog\u003c\/strong\u003e (navigation, filters, category pages) and \u003cstrong\u003ebreaking SEO\u003c\/strong\u003e (URLs, redirects, missing pages, 404s post-launch).\u003c\/p\u003e\n\u003cp\u003eFor Made in France.fr, the main challenge was to achieve a more user-friendly Shopify foundation while preserving existing value: historical category pages, product sheets, indexed content, and navigation habits.\u003c\/p\u003e\n\u003ch2\u003e◎ Context and Challenges\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOriginal platform:\u003c\/strong\u003e PrestaShop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVolume:\u003c\/strong\u003e very large catalog (products, variants, categories, SEO pages)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain risk:\u003c\/strong\u003e loss of traffic and conversions if SEO intentions are not maintained\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eObjective:\u003c\/strong\u003e migrate to Shopify with a more stable catalog structure and smoother operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e◎ Why do \"long product ranges\" require a different method?\u003c\/h2\u003e\n\u003cp\u003eAs the catalog grows, problems don't come from the theme. They come from the \u003cstrong\u003edata structure\u003c\/strong\u003e: inconsistent attributes, poorly standardized variants, excessively deep categories, unmanageable filters, and \"historical SEO\" pages that no longer correspond to a clear intent.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eData:\u003c\/strong\u003e a raw import reproduces (and amplifies) defects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNavigation:\u003c\/strong\u003e without logic (collections, tags, meta fields, filters), the catalog becomes unreadable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSEO:\u003c\/strong\u003e without a 301 plan + 404 monitoring, valuable pages are lost without even realizing it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e◎ Our LobsTTer approach (specialized in large catalogs)\u003c\/h2\u003e\n\u003ch3\u003e◈ 1) Framing: mapping before migrating\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003einventory of product types, variants, attributes, and content,\u003c\/li\u003e\n\u003cli\u003eidentification of truly useful pages (business + SEO),\u003c\/li\u003e\n\u003cli\u003edefinition of a launch MVP (what must be perfect on D-Day vs. what can evolve later).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e◈ 2) Shopify Architecture: making the range readable\u003c\/h3\u003e\n\u003cp\u003eThe goal is not \"to have all categories as before,\" but to have a usable catalog:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003estructured collections (clear navigation),\u003c\/li\u003e\n\u003cli\u003emeta fields to standardize product information (materials, uses, labels, etc.),\u003c\/li\u003e\n\u003cli\u003emaintainable filter logic (not an overcomplicated system),\u003c\/li\u003e\n\u003cli\u003equality controls on titles, variants, media, and information consistency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e◈ 3) Data migration: integrity checks (not just an import)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eproduct + variant + media recovery with systematic checks,\u003c\/li\u003e\n\u003cli\u003ecleaning\/standardization of attributes when necessary,\u003c\/li\u003e\n\u003cli\u003esample testing, then scaling up,\u003c\/li\u003e\n\u003cli\u003e\"long catalog\" oriented acceptance testing: search, filters, category pages, mobile performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e◎ Migration SEO: 301 plan + 404 management (the decisive point)\u003c\/h2\u003e\n\u003cp\u003eFor Made in France.fr, the SEO part was treated as a distinct project: preserving the existing, without perpetuating past errors.\u003c\/p\u003e\n\u003ch3\u003e◈ 1) Inventory of URLs and prioritization\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eextraction of PrestaShop URLs (products, categories, content),\u003c\/li\u003e\n\u003cli\u003esorting \"to absolutely keep\" vs \"to consolidate\" vs \"to drop,\"\u003c\/li\u003e\n\u003cli\u003eidentification of sensitive pages: traffic, backlinks, historical category pages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e◈ 2) Clean mapping and 301 redirects\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1:1 mapping when the intent is identical,\u003c\/li\u003e\n\u003cli\u003emapping to the best Shopify page when the structure evolves (without random redirects),\u003c\/li\u003e\n\u003cli\u003eavoiding loops and redirect chains,\u003c\/li\u003e\n\u003cli\u003evalidation of the redirection file before migration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e◈ 3) After launch: handling \"real\" 404s\u003c\/h3\u003e\n\u003cp\u003eEven with good mapping, 404s always appear after launch (external links, forgotten old pages, generated URLs, historical errors). The difference is in the management:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecollection of 404s (Search Console + field feedback),\u003c\/li\u003e\n\u003cli\u003ecreation of relevant 301s (to a page that matches the intent),\u003c\/li\u003e\n\u003cli\u003ecorrection of causes: broken internal linking, deleted pages without alternatives, filters generating useless URLs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e◎ Results\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSEO Continuity:\u003c\/strong\u003e +18% in the number of clicks before\/after migration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e404 Reduction:\u003c\/strong\u003e automatically managed by an App with rules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Exploitation:\u003c\/strong\u003e simplified management with batch processing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e◎ What this project shows (and why it's not \"a standard migration\")\u003c\/h2\u003e\n\u003cp\u003eWhen the range is very wide, the subject is not the platform: it's the \u003cstrong\u003emastery of the catalog structure\u003c\/strong\u003e and the \u003cstrong\u003emastery of post-migration SEO\u003c\/strong\u003e. Without a method, you end up with a Shopify \"in place\" but difficult to operate, and SEO that slowly degrades (404s, lost pages, broken intents).\u003c\/p\u003e\n\u003cp\u003eTo understand our complete framework (scope, deliverables, cost factors, risks), see: \u003ca title=\"See our complete approach: PrestaShop to Shopify migration (method, deliverables, risks)\" href=\"\/en\/collections\/migration-prestashop-vers-shopify\"\u003e See our complete approach: PrestaShop → Shopify Migration \u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eAnother comparable case study: \u003ca title=\"Another case study: PrestaShop to Shopify migration (Hindbag)\" href=\"https:\/\/lobstter.com\/products\/migration-du-site-hindbag-fr-de-prestashop-vers-shopify\"\u003e Another case study: PrestaShop → Shopify migration (Hindbag) \u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"encadre-info\"\u003e\n\u003cstrong\u003eKey takeaways (long catalogs):\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eValue lies in the catalog architecture (collections, meta fields, filters), not in \"the import.\"\u003c\/li\u003e\n\u003cli\u003eSEO is won through the 301 plan + 404 handling after launch.\u003c\/li\u003e\n\u003cli\u003eA successful migration is measured at D+30, not on D-Day.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Shopify Advanced","offers":[{"title":"site migration","offer_id":42590305386590,"sku":null,"price":10000.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0572\/0953\/files\/agence-shopify-jennah-boutiquecom-migration-prestashop-vers-shopify-pour-une-marque-de-modest-fashion-817670.webp?v=1774721886","url":"https:\/\/lobstter.com\/en\/products\/migration-prestashop-shopify-mode-modeste-jennah","provider":"Agence lobsTTer","version":"1.0","type":"link"}