diff --git a/apps/web/app/[locale]/builders-hub/ideas/[slug]/page.tsx b/apps/web/app/[locale]/builders-hub/ideas/[slug]/page.tsx
index e68a166b68..0a55f48e7c 100644
--- a/apps/web/app/[locale]/builders-hub/ideas/[slug]/page.tsx
+++ b/apps/web/app/[locale]/builders-hub/ideas/[slug]/page.tsx
@@ -5,16 +5,21 @@ import {
   ContentNotFoundError,
   getAllIdeas,
   getAllRfps,
+  getBuilderHubListingSettings,
   getIdeaBySlug,
+  getPageCopy,
 } from '@repo/content/loaders'
 
 import { BuildersHubDetailLayout } from '@/components/sections/builders-hub/builders-hub-detail-layout'
 import { RelatedLinksList } from '@/components/sections/builders-hub/related-links-list'
+import { JsonLd } from '@/components/seo/json-ld'
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { formatDateLong } from '@/lib/dates'
 import { createDefaultMetadata } from '@/lib/metadata'
 import { resolveLocale, type LocaleSlugParams } from '@/lib/route-params'
 import { formatReward } from '@/lib/reward'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 export async function generateStaticParams() {
   const params: Array<{ locale: string; slug: string }> = []
@@ -60,6 +65,11 @@ export default async function IdeaDetailPage({ params }: LocaleSlugParams) {
   }
   if (idea.status !== 'published') notFound()
 
+  const [buildersHub, listingSettings] = await Promise.all([
+    getPageCopy(ROUTES.buildersHub, locale),
+    getBuilderHubListingSettings({ page: 'ideas', locale }),
+  ])
+
   const submitter = idea.submitter.name
     ? `${idea.submitter.name} (@${idea.submitter.handle})`
     : `@${idea.submitter.handle}`
@@ -90,30 +100,46 @@ export default async function IdeaDetailPage({ params }: LocaleSlugParams) {
   }
 
   return (
-    <BuildersHubDetailLayout
-      backHref={ROUTES.ideas}
-      backLabel="All ideas"
-      eyebrow={`Idea · ${idea.status}`}
-      title={idea.title}
-      tagline={idea.tagline}
-      description={idea.description}
-      primaryCta={
-        idea.discussionUrl
-          ? {
-              label: idea.ctaLabel ?? 'Discuss',
-              href: idea.discussionUrl,
-              external: true,
-            }
-          : undefined
-      }
-      meta={meta}
-      footer={
-        <RelatedLinksList
-          heading="Related RFPs"
-          hrefBase={ROUTES.rfps}
-          items={related}
-        />
-      }
-    />
+    <>
+      <JsonLd
+        data={createBreadcrumbListJsonLd(
+          [
+            { name: siteConfig.name, path: ROUTES.home },
+            {
+              name: buildersHub.heading ?? buildersHub.title,
+              path: ROUTES.buildersHub,
+            },
+            { name: listingSettings.breadcrumbLabel, path: ROUTES.ideas },
+            { name: idea.title, path: `${ROUTES.ideas}/${slug}` },
+          ],
+          locale
+        )}
+      />
+      <BuildersHubDetailLayout
+        backHref={ROUTES.ideas}
+        backLabel="All ideas"
+        eyebrow={`Idea · ${idea.status}`}
+        title={idea.title}
+        tagline={idea.tagline}
+        description={idea.description}
+        primaryCta={
+          idea.discussionUrl
+            ? {
+                label: idea.ctaLabel ?? 'Discuss',
+                href: idea.discussionUrl,
+                external: true,
+              }
+            : undefined
+        }
+        meta={meta}
+        footer={
+          <RelatedLinksList
+            heading="Related RFPs"
+            hrefBase={ROUTES.rfps}
+            items={related}
+          />
+        }
+      />
+    </>
   )
 }
diff --git a/apps/web/app/[locale]/builders-hub/ideas/page.tsx b/apps/web/app/[locale]/builders-hub/ideas/page.tsx
index dc992f071b..e789dca51a 100644
--- a/apps/web/app/[locale]/builders-hub/ideas/page.tsx
+++ b/apps/web/app/[locale]/builders-hub/ideas/page.tsx
@@ -1,12 +1,16 @@
 import {
   getAllIdeas,
   getBuilderHubListingSettings,
+  getPageCopy,
 } from '@repo/content/loaders'
 import { isActiveLocale } from '@repo/content/locales'
 
 import { BuildersHubListingClient } from '@/components/sections/builders-hub/builders-hub-listing-client'
+import { JsonLd } from '@/components/seo/json-ld'
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { createDefaultMetadata } from '@/lib/metadata'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 const ROUTE = ROUTES.ideas
 
@@ -38,16 +42,32 @@ export default async function IdeasPage({
     throw new Error(`IdeasPage received non-active locale "${locale}"`)
   }
 
-  const [settings, allIdeas] = await Promise.all([
+  const [settings, allIdeas, buildersHub] = await Promise.all([
     getBuilderHubListingSettings({ page: 'ideas', locale }),
     getAllIdeas({ locale, status: 'published' }),
+    getPageCopy(ROUTES.buildersHub, locale),
   ])
 
   return (
-    <BuildersHubListingClient
-      kind="ideas"
-      settings={settings}
-      items={allIdeas}
-    />
+    <>
+      <JsonLd
+        data={createBreadcrumbListJsonLd(
+          [
+            { name: siteConfig.name, path: ROUTES.home },
+            {
+              name: buildersHub.heading ?? buildersHub.title,
+              path: ROUTES.buildersHub,
+            },
+            { name: settings.breadcrumbLabel, path: ROUTE },
+          ],
+          locale
+        )}
+      />
+      <BuildersHubListingClient
+        kind="ideas"
+        settings={settings}
+        items={allIdeas}
+      />
+    </>
   )
 }
diff --git a/apps/web/app/[locale]/builders-hub/rfps/[slug]/page.tsx b/apps/web/app/[locale]/builders-hub/rfps/[slug]/page.tsx
index ddb341a469..92caa0a905 100644
--- a/apps/web/app/[locale]/builders-hub/rfps/[slug]/page.tsx
+++ b/apps/web/app/[locale]/builders-hub/rfps/[slug]/page.tsx
@@ -1,11 +1,17 @@
 import { notFound } from 'next/navigation'
 
 import { getActiveLocales } from '@repo/content/locales'
+import {
+  getBuilderHubListingSettings,
+  getPageCopy,
+} from '@repo/content/loaders'
 
 import { BuildersHubDetailLayout } from '@/components/sections/builders-hub/builders-hub-detail-layout'
+import { JsonLd } from '@/components/seo/json-ld'
 import { LegalMarkdown } from '@/components/sections/shared/legal-markdown'
 import { Button } from '@/components/ui'
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { createDefaultMetadata } from '@/lib/metadata'
 import { resolveLocale, type LocaleSlugParams } from '@/lib/route-params'
 import {
@@ -14,6 +20,7 @@ import {
   fetchGithubRfps,
   stripLeadingHeading,
 } from '@/lib/rfps-github'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 export async function generateStaticParams() {
   const rfps = await fetchGithubRfps()
@@ -45,12 +52,17 @@ export async function generateMetadata({ params }: LocaleSlugParams) {
 }
 
 export default async function RfpDetailPage({ params }: LocaleSlugParams) {
-  await resolveLocale(params, 'RfpDetailPage')
+  const locale = await resolveLocale(params, 'RfpDetailPage')
   const { slug } = await params
 
   const rfp = await fetchGithubRfpBySlug(slug)
   if (!rfp) notFound()
 
+  const [buildersHub, listingSettings] = await Promise.all([
+    getPageCopy(ROUTES.buildersHub, locale),
+    getBuilderHubListingSettings({ page: 'rfps', locale }),
+  ])
+
   const meta = [
     { label: 'Status', value: rfp.status },
     rfp.category ? { label: 'Category', value: rfp.category } : null,
@@ -58,24 +70,40 @@ export default async function RfpDetailPage({ params }: LocaleSlugParams) {
   ].filter((x): x is { label: string; value: string } => Boolean(x))
 
   return (
-    <BuildersHubDetailLayout
-      backHref={ROUTES.rfps}
-      backLabel="All RFPs"
-      eyebrow={`${rfp.number} · ${rfp.status}`}
-      title={rfp.title}
-      tagline={rfp.summary}
-      body={<LegalMarkdown body={stripLeadingHeading(rfp.rawMarkdown)} />}
-      primaryCta={{
-        label: 'Apply',
-        href: RFP_APPLY_URL,
-        external: true,
-      }}
-      meta={meta}
-      footer={
-        <Button href={rfp.githubUrl} variant="secondary">
-          View on GitHub
-        </Button>
-      }
-    />
+    <>
+      <JsonLd
+        data={createBreadcrumbListJsonLd(
+          [
+            { name: siteConfig.name, path: ROUTES.home },
+            {
+              name: buildersHub.heading ?? buildersHub.title,
+              path: ROUTES.buildersHub,
+            },
+            { name: listingSettings.breadcrumbLabel, path: ROUTES.rfps },
+            { name: rfp.title, path: `${ROUTES.rfps}/${slug}` },
+          ],
+          locale
+        )}
+      />
+      <BuildersHubDetailLayout
+        backHref={ROUTES.rfps}
+        backLabel="All RFPs"
+        eyebrow={`${rfp.number} · ${rfp.status}`}
+        title={rfp.title}
+        tagline={rfp.summary}
+        body={<LegalMarkdown body={stripLeadingHeading(rfp.rawMarkdown)} />}
+        primaryCta={{
+          label: 'Apply',
+          href: RFP_APPLY_URL,
+          external: true,
+        }}
+        meta={meta}
+        footer={
+          <Button href={rfp.githubUrl} variant="secondary">
+            View on GitHub
+          </Button>
+        }
+      />
+    </>
   )
 }
diff --git a/apps/web/app/[locale]/builders-hub/rfps/page.tsx b/apps/web/app/[locale]/builders-hub/rfps/page.tsx
index d90346947e..2c196e9ca3 100644
--- a/apps/web/app/[locale]/builders-hub/rfps/page.tsx
+++ b/apps/web/app/[locale]/builders-hub/rfps/page.tsx
@@ -1,10 +1,16 @@
-import { getBuilderHubListingSettings } from '@repo/content/loaders'
+import {
+  getBuilderHubListingSettings,
+  getPageCopy,
+} from '@repo/content/loaders'
 import { isActiveLocale } from '@repo/content/locales'
 
 import { BuildersHubListingClient } from '@/components/sections/builders-hub/builders-hub-listing-client'
+import { JsonLd } from '@/components/seo/json-ld'
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { createDefaultMetadata } from '@/lib/metadata'
 import { fetchGithubRfps } from '@/lib/rfps-github'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 const ROUTE = ROUTES.rfps
 
@@ -36,12 +42,32 @@ export default async function RfpsPage({
     throw new Error(`RfpsPage received non-active locale "${locale}"`)
   }
 
-  const [settings, allRfps] = await Promise.all([
+  const [settings, allRfps, buildersHub] = await Promise.all([
     getBuilderHubListingSettings({ page: 'rfps', locale }),
     fetchGithubRfps(),
+    getPageCopy(ROUTES.buildersHub, locale),
   ])
 
   return (
-    <BuildersHubListingClient kind="rfps" settings={settings} items={allRfps} />
+    <>
+      <JsonLd
+        data={createBreadcrumbListJsonLd(
+          [
+            { name: siteConfig.name, path: ROUTES.home },
+            {
+              name: buildersHub.heading ?? buildersHub.title,
+              path: ROUTES.buildersHub,
+            },
+            { name: settings.breadcrumbLabel, path: ROUTE },
+          ],
+          locale
+        )}
+      />
+      <BuildersHubListingClient
+        kind="rfps"
+        settings={settings}
+        items={allRfps}
+      />
+    </>
   )
 }
diff --git a/apps/web/app/[locale]/field-guide/[slug]/page.tsx b/apps/web/app/[locale]/field-guide/[slug]/page.tsx
index ac58b25ba6..14792dfb6e 100644
--- a/apps/web/app/[locale]/field-guide/[slug]/page.tsx
+++ b/apps/web/app/[locale]/field-guide/[slug]/page.tsx
@@ -9,9 +9,12 @@ import {
 import { isActiveLocale } from '@repo/content/locales'
 
 import { FieldGuidePageView } from '@/components/sections/field-guide'
+import { JsonLd } from '@/components/seo/json-ld'
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { routing } from '@/i18n/routing'
 import { createDefaultMetadata } from '@/lib/metadata'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 const INDEX_SLUG = 'index'
 
@@ -73,7 +76,26 @@ export default async function FieldGuideChapterPage({
       getFieldGuideManifest(locale),
       getFieldGuideChapter(locale, slug),
     ])
-    return <FieldGuidePageView manifest={manifest} slug={slug} body={body} />
+    const item = flattenFieldGuideItems(manifest).find(
+      (chapter) => chapter.slug === slug
+    )
+    if (!item) notFound()
+
+    return (
+      <>
+        <JsonLd
+          data={createBreadcrumbListJsonLd(
+            [
+              { name: siteConfig.name, path: ROUTES.home },
+              { name: manifest.title, path: ROUTES.fieldGuide },
+              { name: item.title, path: ROUTES.fieldGuideChapter(slug) },
+            ],
+            locale
+          )}
+        />
+        <FieldGuidePageView manifest={manifest} slug={slug} body={body} />
+      </>
+    )
   } catch (error) {
     if (error instanceof ContentNotFoundError) notFound()
     throw error
diff --git a/apps/web/app/[locale]/page.tsx b/apps/web/app/[locale]/page.tsx
index 7a43ffdbf2..8d8f07b9ef 100644
--- a/apps/web/app/[locale]/page.tsx
+++ b/apps/web/app/[locale]/page.tsx
@@ -16,6 +16,7 @@ import type {
 import AboutSection from '@/components/sections/home/about-section'
 import BuilderPortalSection from '@/components/sections/home/builder-portal-section'
 import DecideSection from '@/components/sections/home/decide-section'
+import { JsonLd } from '@/components/seo/json-ld'
 import FeatureCardsSection from '@/components/sections/shared/feature-cards-section'
 import HeroSectionView from '@/components/sections/shared/hero-section'
 import BlogSection from '@/components/sections/home/blog-section'
@@ -28,6 +29,7 @@ import { EXTERNAL_URLS, ROUTES } from '@/constants/routes'
 import { createPageMetadata } from '@/lib/page-metadata'
 import { createSectionFinder } from '@/lib/page-sections'
 import { getLatestBlogArticles } from '@/lib/blog-engine'
+import { createOrganizationJsonLd } from '@/lib/structured-data'
 import { getSocialProofStats } from '@/lib/social-proof-stats'
 import { getWinnableIssuesCount } from '@/lib/winnable-issues'
 
@@ -112,6 +114,7 @@ export default async function HomePage({
 
   return (
     <>
+      <JsonLd data={createOrganizationJsonLd()} />
       <HeroSectionView data={hero} />
       <SocialProofSection
         data={socialProof}
diff --git a/apps/web/app/[locale]/technology-stack/blockchain/page.tsx b/apps/web/app/[locale]/technology-stack/blockchain/page.tsx
index cc7156b096..dbe05d8b56 100644
--- a/apps/web/app/[locale]/technology-stack/blockchain/page.tsx
+++ b/apps/web/app/[locale]/technology-stack/blockchain/page.tsx
@@ -10,6 +10,7 @@ import type {
 import BlockchainCryptarchia from '@/components/sections/blockchain/blockchain-cryptarchia'
 import BlockchainHero from '@/components/sections/blockchain/blockchain-hero'
 import BlockchainPrivacy from '@/components/sections/blockchain/blockchain-privacy'
+import { JsonLd } from '@/components/seo/json-ld'
 import TechStackBuilderCta from '@/components/sections/shared/tech-stack-builder-cta'
 import {
   TechStackDetailPage,
@@ -18,10 +19,12 @@ import {
 import TechStackExplorer from '@/components/sections/shared/tech-stack-explorer'
 import TechStackRelatedArticles from '@/components/sections/shared/tech-stack-related-articles'
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { createPageMetadata } from '@/lib/page-metadata'
 import { createSectionFinder } from '@/lib/page-sections'
 import { getLatestBlogArticles } from '@/lib/blog-engine'
 import { TECH_STACK_RELATED_ARTICLE_TAGS } from '@/lib/tech-stack-related-articles'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 const ROUTE = ROUTES.blockchain
 
@@ -73,6 +76,16 @@ export default async function BlockchainPage({
 
   return (
     <TechStackDetailPage>
+      <JsonLd
+        data={createBreadcrumbListJsonLd(
+          [
+            { name: siteConfig.name, path: ROUTES.home },
+            { name: hero.eyebrow ?? page.title, path: ROUTES.technologyStack },
+            { name: page.heading ?? page.title, path: ROUTE },
+          ],
+          locale
+        )}
+      />
       <BlockchainHero data={hero} backHref={ROUTES.technologyStack} />
       <TechStackDetailSection className="mt-0 border-t border-brand-dark-green/10 md:border-t-0">
         <BlockchainPrivacy data={privacy} />
diff --git a/apps/web/app/[locale]/technology-stack/messaging/page.tsx b/apps/web/app/[locale]/technology-stack/messaging/page.tsx
index 834d9113dd..e87f694cc5 100644
--- a/apps/web/app/[locale]/technology-stack/messaging/page.tsx
+++ b/apps/web/app/[locale]/technology-stack/messaging/page.tsx
@@ -11,6 +11,7 @@ import MessagingCaseStudies from '@/components/sections/messaging/messaging-case
 import MessagingHero from '@/components/sections/messaging/messaging-hero'
 import MessagingIntro from '@/components/sections/messaging/messaging-intro'
 import MessagingTechStack from '@/components/sections/messaging/messaging-tech-stack'
+import { JsonLd } from '@/components/seo/json-ld'
 import TechStackBuilderCta from '@/components/sections/shared/tech-stack-builder-cta'
 import {
   TechStackDetailPage,
@@ -18,10 +19,12 @@ import {
 } from '@/components/sections/shared/tech-stack-detail-layout'
 import TechStackRelatedArticles from '@/components/sections/shared/tech-stack-related-articles'
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { createPageMetadata } from '@/lib/page-metadata'
 import { createSectionFinder } from '@/lib/page-sections'
 import { getLatestBlogArticles } from '@/lib/blog-engine'
 import { TECH_STACK_RELATED_ARTICLE_TAGS } from '@/lib/tech-stack-related-articles'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 const ROUTE = ROUTES.messaging
 
@@ -91,6 +94,16 @@ export default async function MessagingPage({
 
   return (
     <TechStackDetailPage>
+      <JsonLd
+        data={createBreadcrumbListJsonLd(
+          [
+            { name: siteConfig.name, path: ROUTES.home },
+            { name: hero.eyebrow ?? page.title, path: ROUTES.technologyStack },
+            { name: page.heading ?? page.title, path: ROUTE },
+          ],
+          locale
+        )}
+      />
       <MessagingHero data={hero} backHref={ROUTES.technologyStack} />
       <TechStackDetailSection>
         <MessagingIntro privacy={privacy} lmn={lmn} censorship={censorship} />
diff --git a/apps/web/app/[locale]/technology-stack/networking/page.tsx b/apps/web/app/[locale]/technology-stack/networking/page.tsx
index 37613f9733..b9fa32b41e 100644
--- a/apps/web/app/[locale]/technology-stack/networking/page.tsx
+++ b/apps/web/app/[locale]/technology-stack/networking/page.tsx
@@ -10,6 +10,7 @@ import type {
 import NetworkingFeatures from '@/components/sections/networking/networking-features'
 import NetworkingHero from '@/components/sections/networking/networking-hero'
 import NetworkingIntro from '@/components/sections/networking/networking-intro'
+import { JsonLd } from '@/components/seo/json-ld'
 import TechStackBuilderCta from '@/components/sections/shared/tech-stack-builder-cta'
 import {
   TechStackDetailPage,
@@ -19,10 +20,12 @@ import TechStackRelatedArticles from '@/components/sections/shared/tech-stack-re
 import NetworkingTechStack from '@/components/sections/networking/networking-tech-stack'
 
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { createPageMetadata } from '@/lib/page-metadata'
 import { createSectionFinder } from '@/lib/page-sections'
 import { getLatestBlogArticles } from '@/lib/blog-engine'
 import { TECH_STACK_RELATED_ARTICLE_TAGS } from '@/lib/tech-stack-related-articles'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 const ROUTE = ROUTES.networking
 
@@ -74,6 +77,16 @@ export default async function NetworkingPage({
 
   return (
     <TechStackDetailPage>
+      <JsonLd
+        data={createBreadcrumbListJsonLd(
+          [
+            { name: siteConfig.name, path: ROUTES.home },
+            { name: hero.eyebrow ?? page.title, path: ROUTES.technologyStack },
+            { name: page.heading ?? page.title, path: ROUTE },
+          ],
+          locale
+        )}
+      />
       <NetworkingHero data={hero} backHref={ROUTES.technologyStack} />
       <TechStackDetailSection>
         <NetworkingIntro data={intro} />
diff --git a/apps/web/app/[locale]/technology-stack/storage/page.tsx b/apps/web/app/[locale]/technology-stack/storage/page.tsx
index 3e8e33791f..19217e8bda 100644
--- a/apps/web/app/[locale]/technology-stack/storage/page.tsx
+++ b/apps/web/app/[locale]/technology-stack/storage/page.tsx
@@ -11,6 +11,7 @@ import StorageHero from '@/components/sections/storage/storage-hero'
 import StorageAccess from '@/components/sections/storage/storage-access'
 import StorageMain from '@/components/sections/storage/storage-main'
 import StorageTechStack from '@/components/sections/storage/storage-tech-stack'
+import { JsonLd } from '@/components/seo/json-ld'
 // Temporarily hidden — may be reused later. Do not delete.
 // import StorageUseCases from '@/components/sections/storage/storage-use-cases'
 import TechStackBuilderCta from '@/components/sections/shared/tech-stack-builder-cta'
@@ -21,10 +22,12 @@ import {
 import TechStackRelatedArticles from '@/components/sections/shared/tech-stack-related-articles'
 
 import { ROUTES } from '@/constants/routes'
+import siteConfig from '@/constants/site-config'
 import { createPageMetadata } from '@/lib/page-metadata'
 import { createSectionFinder } from '@/lib/page-sections'
 import { getLatestBlogArticles } from '@/lib/blog-engine'
 import { TECH_STACK_RELATED_ARTICLE_TAGS } from '@/lib/tech-stack-related-articles'
+import { createBreadcrumbListJsonLd } from '@/lib/structured-data'
 
 const ROUTE = ROUTES.storage
 
@@ -89,6 +92,16 @@ export default async function StoragePage({
 
   return (
     <TechStackDetailPage>
+      <JsonLd
+        data={createBreadcrumbListJsonLd(
+          [
+            { name: siteConfig.name, path: ROUTES.home },
+            { name: hero.eyebrow ?? page.title, path: ROUTES.technologyStack },
+            { name: page.heading ?? page.title, path: ROUTE },
+          ],
+          locale
+        )}
+      />
       <StorageHero data={hero} backHref={ROUTES.technologyStack} />
       <TechStackDetailSection>
         <StorageMain data={main} />
diff --git a/apps/web/components/seo/json-ld.tsx b/apps/web/components/seo/json-ld.tsx
new file mode 100644
index 0000000000..904e003c7d
--- /dev/null
+++ b/apps/web/components/seo/json-ld.tsx
@@ -0,0 +1,16 @@
+import type { JsonLdObject } from '@/lib/structured-data'
+
+type Props = {
+  data: JsonLdObject
+}
+
+export function JsonLd({ data }: Props) {
+  const json = JSON.stringify(data).replace(/</g, '\\u003c')
+
+  return (
+    <script
+      type="application/ld+json"
+      dangerouslySetInnerHTML={{ __html: json }}
+    />
+  )
+}
diff --git a/apps/web/lib/__tests__/structured-data.test.tsx b/apps/web/lib/__tests__/structured-data.test.tsx
new file mode 100644
index 0000000000..7468fd84b0
--- /dev/null
+++ b/apps/web/lib/__tests__/structured-data.test.tsx
@@ -0,0 +1,73 @@
+import { renderToStaticMarkup } from 'react-dom/server'
+import { describe, expect, it } from 'vitest'
+
+import { JsonLd } from '@/components/seo/json-ld'
+import {
+  createBreadcrumbListJsonLd,
+  createOrganizationJsonLd,
+} from '@/lib/structured-data'
+
+const BASE_URL = 'https://logos.co'
+
+describe('structured data', () => {
+  it('builds the canonical Logos organisation entity', () => {
+    expect(createOrganizationJsonLd()).toMatchObject({
+      '@context': 'https://schema.org',
+      '@type': 'Organization',
+      '@id': `${BASE_URL}/#organization`,
+      name: 'Logos',
+      url: BASE_URL,
+      logo: `${BASE_URL}/apple-touch-icon.png`,
+    })
+  })
+
+  it('builds ordered canonical breadcrumb URLs', () => {
+    expect(
+      createBreadcrumbListJsonLd(
+        [
+          { name: 'Logos', path: '/' },
+          { name: 'Technology Stack', path: '/technology-stack' },
+          { name: 'Storage', path: '/technology-stack/storage' },
+        ],
+        'en'
+      )
+    ).toMatchObject({
+      '@type': 'BreadcrumbList',
+      itemListElement: [
+        {
+          '@type': 'ListItem',
+          position: 1,
+          name: 'Logos',
+          item: `${BASE_URL}/`,
+        },
+        {
+          '@type': 'ListItem',
+          position: 2,
+          name: 'Technology Stack',
+          item: `${BASE_URL}/technology-stack`,
+        },
+        {
+          '@type': 'ListItem',
+          position: 3,
+          name: 'Storage',
+          item: `${BASE_URL}/technology-stack/storage`,
+        },
+      ],
+    })
+  })
+
+  it('escapes markup that could terminate the JSON-LD script', () => {
+    const html = renderToStaticMarkup(
+      <JsonLd
+        data={{
+          '@context': 'https://schema.org',
+          '@type': 'Thing',
+          name: '</script><script>alert(1)</script>',
+        }}
+      />
+    )
+
+    expect(html).not.toContain('</script><script>alert(1)</script>')
+    expect(html).toContain('\\u003c/script>')
+  })
+})
diff --git a/apps/web/lib/structured-data.ts b/apps/web/lib/structured-data.ts
new file mode 100644
index 0000000000..7d2eed8dd0
--- /dev/null
+++ b/apps/web/lib/structured-data.ts
@@ -0,0 +1,54 @@
+import siteConfig from '@/constants/site-config'
+import { absoluteUrl } from '@/lib/metadata'
+
+import siteSettings from '../../../content/site/en/settings.json'
+
+type JsonLdPrimitive = boolean | null | number | string
+type JsonLdValue =
+  | JsonLdPrimitive
+  | JsonLdObject
+  | ReadonlyArray<JsonLdValue>
+
+export interface JsonLdObject {
+  readonly [key: string]: JsonLdValue | undefined
+}
+
+export interface BreadcrumbItem {
+  name: string
+  path: string
+}
+
+export function createOrganizationJsonLd(): JsonLdObject {
+  const sameAs = [
+    siteSettings.social.twitter,
+    siteSettings.social.youtube,
+    siteSettings.social.github,
+  ].filter((url): url is string => Boolean(url))
+
+  return {
+    '@context': 'https://schema.org',
+    '@type': 'Organization',
+    '@id': `${siteConfig.url}/#organization`,
+    name: siteConfig.name,
+    url: siteConfig.url,
+    logo: absoluteUrl('/apple-touch-icon.png'),
+    description: siteConfig.description,
+    sameAs,
+  }
+}
+
+export function createBreadcrumbListJsonLd(
+  items: ReadonlyArray<BreadcrumbItem>,
+  locale: string
+): JsonLdObject {
+  return {
+    '@context': 'https://schema.org',
+    '@type': 'BreadcrumbList',
+    itemListElement: items.map((item, index) => ({
+      '@type': 'ListItem',
+      position: index + 1,
+      name: item.name,
+      item: absoluteUrl(item.path, locale),
+    })),
+  }
+}
diff --git a/apps/web/scripts/static-export-smoke.ts b/apps/web/scripts/static-export-smoke.ts
index 21fba140d9..f1aa73d0e1 100644
--- a/apps/web/scripts/static-export-smoke.ts
+++ b/apps/web/scripts/static-export-smoke.ts
@@ -121,6 +121,56 @@ const isLocalAssetHref = (href: string): boolean => {
   )
 }
 
+const isRecord = (value: unknown): value is Record<string, unknown> =>
+  typeof value === 'object' && value !== null && !Array.isArray(value)
+
+const breadcrumbTechRoutes = new Set<string>([
+  ROUTES.blockchain,
+  ROUTES.messaging,
+  ROUTES.networking,
+  ROUTES.storage,
+])
+
+const assertStructuredData = (route: string, html: string): string[] => {
+  const failures: string[] = []
+  const types = new Set<string>()
+  const scripts = html.matchAll(
+    /<script[^>]*type=["']application\/ld\+json["'][^>]*>([\s\S]*?)<\/script>/gi
+  )
+
+  for (const [, rawJson] of scripts) {
+    try {
+      const parsed: unknown = JSON.parse(rawJson ?? '')
+      const entries = Array.isArray(parsed) ? parsed : [parsed]
+      for (const entry of entries) {
+        if (isRecord(entry) && typeof entry['@type'] === 'string') {
+          types.add(entry['@type'])
+        }
+      }
+    } catch {
+      failures.push(`${route} contains invalid JSON-LD`)
+    }
+  }
+
+  if (route === ROUTES.home && !types.has('Organization')) {
+    failures.push(`${route} is missing Organization JSON-LD`)
+  }
+
+  const expectsBreadcrumb =
+    route === ROUTES.ideas ||
+    route === ROUTES.rfps ||
+    route.startsWith(`${ROUTES.ideas}/`) ||
+    route.startsWith(`${ROUTES.rfps}/`) ||
+    route.startsWith(`${ROUTES.fieldGuide}/`) ||
+    breadcrumbTechRoutes.has(route)
+
+  if (expectsBreadcrumb && !types.has('BreadcrumbList')) {
+    failures.push(`${route} is missing BreadcrumbList JSON-LD`)
+  }
+
+  return failures
+}
+
 const assertHtmlPage = (route: string, filePath: string): string[] => {
   const html = readFileSync(filePath, 'utf8')
   const failures: string[] = []
@@ -133,6 +183,7 @@ const assertHtmlPage = (route: string, filePath: string): string[] => {
   if (html.includes(`href="/${locale}/`) || html.includes(`src="/${locale}/`)) {
     failures.push(`${route} still contains default-locale-prefixed asset paths`)
   }
+  failures.push(...assertStructuredData(route, html))
 
   const refs = html.matchAll(/\b(?:href|src)=["']([^"']+)["']/g)
   for (const [, rawHref] of refs) {