Smartshift
Case Studies

Web projects measured on what actually matters: speed, conversion, autonomy.

We work with startups, SMBs, mid-market companies, and large groups on their corporate sites, international multisite networks, e-commerce stores, and AI-driven process optimization.

Here is how we scope a WordPress, Shopify, or automation project: the starting problem, what we do, and the results we target.

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Web redesign performance analysis with dashboards and project documents
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From large media, retail, health, and industrial groups to SMBs.

Ouest-France
Ouest-France
Le Parisien
Le Parisien
Easypara
Easypara
Ducerf
Ducerf
Nutrition & Santé
Nutrition & Santé
Gerblé
Gerblé
Gerlinéa
Gerlinéa
Milical
Milical
Céréal Bio
Céréal Bio
Isostar
Isostar
Norlink
Norlink
Medimage
Medimage
Envoi du Net
Envoi du Net
SCC
SCC
FVD
FVD
La Chambre Claire
La Chambre Claire
Le Grand Comptoir
Le Grand Comptoir
Valto
Valto
Zylio
Zylio
DigitalAine
DigitalAine
WordPressCase 01 · 8 weeks

Industrial equipment manufacturer, Ile-de-France, 55 employees

WordPress redesign: -62% load time, +34% leads

The WordPress site had an LCP above 5 seconds on mobile, a PageSpeed score of 28/100, and a bounce rate of 71%. Six years of misconfigured plugins, a heavy page-builder theme, and uncompressed images were sending prospects away before they reached the contact form.

What we did

  • Full technical audit (Core Web Vitals, PageSpeed, site structure, crawl) and ranking of initiatives by impact
  • Custom lightweight theme (FSE), removal of 14 plugins replaced by native functions, NVMe hosting + CDN
  • WebP images, lazy loading, fixed dimensions to prevent CLS, minification, and preloading of critical resources
  • UX redesign of service and contact pages: clearer hierarchy, above-the-fold CTA, form reduced from 9 to 4 fields

+34%

more quote requests in the 3 months after launch

Mobile LCP

5.3 s1.9 s

Mobile PageSpeed

28 / 10081 / 100

Bounce rate

71%48%

ShopifyCase 02 · 11 weeks

B2B/DTC workwear brand, Grand Est, 28 employees

PrestaShop to Shopify Plus migration: +41% organic traffic

A PrestaShop 1.7 store that had become hard to maintain: blocked updates, incompatible modules, slowdowns at traffic peaks, no B2B features (account-based pricing, quick order). Conversion rate stagnant at 1.1% and a catalog of 380 references that was unmanageable.

What we did

  • E-commerce audit: catalog, order flows, ERP integration, and mapping of the 301 redirects to preserve
  • Data migration (380 products, 4,200 customers, 3 years of history) to Shopify Plus via custom imports, zero data loss
  • Custom Shopify theme with a B2B portal (tiered pricing, quick order, delivery note download), mobile-first and CWV-optimized
  • 301 redirects, sitemap submission, and weekly SEO monitoring for 8 weeks to secure re-indexing

+55%

online revenue at 6 months vs. prior year

Organic traffic

baseline+41% at 5 months

Mobile LCP

4.8 s2.1 s

Conversion rate

1.1%1.7%

AutomationCase 03 · 5 weeks

HR consulting and recruitment firm, Ile-de-France, 12 staff

n8n automation: 15 h/week recovered, lead response in under 8 min

Incoming leads (form, LinkedIn, referrers) were handled manually: copy-pasting into the CRM, sending an acknowledgment email, creating a Notion task by hand. Average first-contact delay of 4 to 6 hours, and 18 h/week of data entry for two assistants.

What we did

  • Mapping of 6 incoming sources and manual tasks: 23 automatable actions identified with no quality loss
  • n8n workflows: unified lead capture, automatic enrichment, HubSpot contact creation, Slack notification to the relevant consultant
  • Automated post-interview follow-up: formatted summary, day-3 reminder, deal update based on stages reached
  • Auto-populated Notion dashboard (volume, response time, conversion by source) with no manual data entry

-83%

of administrative time returned to consultants

Time to first contact

4 to 6 h< 8 min

Admin hours/week

18 h3 h

Lead to meeting

22%31%

Project scoping

What we need to clarify before writing a single line of code.

Business objective

What concrete outcome are we after: inbound inquiries, sales, or team autonomy?

Technical constraints

Which CMS, theme, apps, data, SEO, or tracking must be preserved at all costs?

SEO and data risks

Which URLs, redirects, content, products, or integrations could break during the cutover?

Acceptance criteria

What concretely proves that the page, the store, or the workflow is ready to ship?

Services

You can combine levers, but every project needs one clear priority.

Corporate & Marketing Websites

Custom WordPress, showcase, and institutional sites built for credibility and inbound inquiries.

E-commerce

Shopify stores, custom e-commerce, PIM and DAM to sell more and manage your catalog without friction.

Business Automation and AI

Make, n8n, and AI automations to eliminate repetitive tasks, from back-office to product visuals.