From c8ff5c1d688d7bd3866f32784613521ca3d5a8b3 Mon Sep 17 00:00:00 2001
From: Pierre-Olivier Mercier <nemunaire@nemunai.re>
Date: Thu, 12 Mar 2026 11:07:10 +0700
Subject: [PATCH] Add SEO improvements: canonical, hreflang, schema fixes,
 robots.txt
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Fix breadcrumb schema position bug (3 → 2) for Google Rich Results
- Override article/post schemas to use post image instead of site logo
- Fix og:type to emit "article" on post pages with published/modified times
- Add canonical link and hreflang alternate tags (incl. x-default) for bilingual site
- Add organizationName/organizationLogo params for valid Organization schema
- Add robots.txt with sitemap pointer
- Add preconnect hint for analytics host
---
 config.yml                                    |  3 ++
 layouts/partials/head_custom.html             |  8 ++++
 layouts/partials/header.html                  | 17 +++----
 layouts/partials/seo/opengraph.html           | 21 +++++++++
 layouts/partials/seo/structured/article.html  | 28 +++++++++++
 .../partials/seo/structured/breadcrumb.html   | 21 +++++++++
 layouts/partials/seo/structured/post.html     | 47 +++++++++++++++++++
 static/css/custom.css                         | 35 +++++++++-----
 static/robots.txt                             |  4 ++
 9 files changed, 164 insertions(+), 20 deletions(-)
 create mode 100644 layouts/partials/seo/opengraph.html
 create mode 100644 layouts/partials/seo/structured/article.html
 create mode 100644 layouts/partials/seo/structured/breadcrumb.html
 create mode 100644 layouts/partials/seo/structured/post.html
 create mode 100644 static/robots.txt

diff --git a/config.yml b/config.yml
index 87e0710..5bdc1b5 100644
--- a/config.yml
+++ b/config.yml
@@ -28,6 +28,9 @@ params:
       desc: "My school: Épita."
       link: "http://epita.fr/"
 
+  organizationName: "nemunaire's blog"
+  organizationLogo: "https://www.nemunai.re/img/mug.jpg"
+
   author:
     name: "nemunaire"
     email: "blog@nemunai.re"
diff --git a/layouts/partials/head_custom.html b/layouts/partials/head_custom.html
index 00a1aa9..8c964c1 100644
--- a/layouts/partials/head_custom.html
+++ b/layouts/partials/head_custom.html
@@ -1,3 +1,11 @@
+    <link rel="canonical" href="{{ .Permalink }}" />
+    {{ if .IsTranslated }}
+    {{ range .AllTranslations }}
+    <link rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}" />
+    {{ end }}
+    {{ range .AllTranslations }}{{ if eq .Lang "en" }}<link rel="alternate" hreflang="x-default" href="{{ .Permalink }}" />{{ end }}{{ end }}
+    {{ end }}
+    <link rel="preconnect" href="https://pythagore.p0m.fr" />
     <script async defer data-website-id="714f2f10-3a65-4c5b-971f-7cea9eac1ecd" src="https://pythagore.p0m.fr/pythagore.js"></script>
     <link rel="stylesheet" href="{{ "css/custom.css" | absURL }}" />
     <style>
diff --git a/layouts/partials/header.html b/layouts/partials/header.html
index 6f74d5b..9e81483 100644
--- a/layouts/partials/header.html
+++ b/layouts/partials/header.html
@@ -90,14 +90,15 @@
 
     {{ if $thumbs }}
     <div class="container">
-      {{range $i, $thumb := $thumbs}}
-      <a href="{{ $thumb.link | absURL }}" target="_blank">
-        <div class="thumbApp" style="background-image:url('{{ $thumb.src | absURL }}')">
-          {{ if $thumb.desc }}<p><span>{{ $thumb.desc }}</span></p>{{end}}
-        </div>
-      </a>
-      {{ end }}
-      <span style="clear:both; display: block"></span>
+      <div class="thumbApps">
+        {{range $i, $thumb := $thumbs}}
+        <a href="{{ $thumb.link | absURL }}" target="_blank">
+          <div class="thumbApp" style="background-image:url('{{ $thumb.src | absURL }}')">
+            {{ if $thumb.desc }}<p><span>{{ $thumb.desc }}</span></p>{{end}}
+          </div>
+        </a>
+        {{ end }}
+      </div>
       <hr class="small">
     </div>
     {{ end }}
diff --git a/layouts/partials/seo/opengraph.html b/layouts/partials/seo/opengraph.html
new file mode 100644
index 0000000..aa2daba
--- /dev/null
+++ b/layouts/partials/seo/opengraph.html
@@ -0,0 +1,21 @@
+{{- with .Title | default .Site.Title }}
+<meta property="og:title" content="{{ . }}" />
+{{- end }}
+{{- with .Description | default .Params.subtitle | default .Summary }}
+<meta property="og:description" content="{{ . }}">
+{{- end }}
+{{- with .Params.share_img | default .Params.image | default .Site.Params.logo }}
+<meta property="og:image" content="{{ . | absURL }}" />
+{{- end }}
+{{- with .Site.Params.fb_app_id }}
+<meta property="fb:app_id" content="{{ . }}" />
+{{- end }}
+<meta property="og:url" content="{{ .Permalink | absLangURL }}" />
+{{- if .IsPage }}
+<meta property="og:type" content="article" />
+{{- with .PublishDate }}<meta property="article:published_time" content="{{ .Format "2006-01-02T15:04:05Z07:00" }}" />{{- end }}
+{{- with .Lastmod }}<meta property="article:modified_time" content="{{ .Format "2006-01-02T15:04:05Z07:00" }}" />{{- end }}
+{{- else }}
+<meta property="og:type" content="website" />
+{{- end }}
+<meta property="og:site_name" content="{{ .Site.Title }}" />
diff --git a/layouts/partials/seo/structured/article.html b/layouts/partials/seo/structured/article.html
new file mode 100644
index 0000000..6acdba1
--- /dev/null
+++ b/layouts/partials/seo/structured/article.html
@@ -0,0 +1,28 @@
+<script type="application/ld+json">
+{
+  "@context": "http://schema.org",
+  "@type": "Article",
+  "author": {
+    "name" : "{{ if .Params.author -}}{{ .Params.author }}{{- else if .Site.Params.author.name -}}{{ .Site.Params.author.name }}{{- end }}"
+  },
+  "headline": "{{ .Title }}",
+  "description" : "{{ if .Description }}{{ .Description | plainify }}{{ else }}{{if .IsPage}}{{ .Summary | plainify  }}{{ end }}{{ end }}",
+  "inLanguage" : "{{ .Lang }}",
+  "wordCount": {{ .WordCount }},
+  "datePublished" : "{{ .PublishDate.Format "2006-01-02T15:04:05-07:00" }}",
+  "dateModified" : "{{ .Lastmod.Format "2006-01-02T15:04:05-07:00"  }}",
+  "image" : "{{ .Params.share_img | default .Params.image | default .Site.Params.logo | absURL }}",
+  "keywords" : [ "{{ range $i, $e := .Params.tags }}{{ if $i }}, {{ end }}{{ $e }}{{ end }}" ],
+  "mainEntityOfPage" : "{{ .Permalink }}",
+  "publisher" : {
+    "@type": "Organization",
+    "name" : "{{ .Site.BaseURL }}",
+    "logo" : {
+        "@type" : "ImageObject",
+        "url" : "{{ .Site.Params.logo | absURL }}",
+        "height" :  60 ,
+        "width" :  60
+    }
+  }
+}
+</script>
diff --git a/layouts/partials/seo/structured/breadcrumb.html b/layouts/partials/seo/structured/breadcrumb.html
new file mode 100644
index 0000000..fbc2e0d
--- /dev/null
+++ b/layouts/partials/seo/structured/breadcrumb.html
@@ -0,0 +1,21 @@
+<script type="application/ld+json">
+{
+  "@context": "http://schema.org",
+  "@type": "BreadcrumbList",
+  "itemListElement": [{
+        "@type": "ListItem",
+        "position": 1,
+        "item": {
+          "@id": "{{ .Site.BaseURL }}",
+          "name": "home"
+        }
+    },{
+        "@type": "ListItem",
+        "position": 2,
+        "item": {
+          "@id": "{{ .Permalink }}",
+          "name": "{{ .Title | humanize }}"
+        }
+    }]
+}
+</script>
diff --git a/layouts/partials/seo/structured/post.html b/layouts/partials/seo/structured/post.html
new file mode 100644
index 0000000..909f759
--- /dev/null
+++ b/layouts/partials/seo/structured/post.html
@@ -0,0 +1,47 @@
+<script type="application/ld+json"> {
+  "@context" : "http://schema.org",
+  "@type" : "BlogPosting",
+  {{ if .Params.categories }}{{ range .Params.categories }}"articleSection" : "{{ . }}",{{ end }}{{ end }}
+  "name" : "{{ .Title | safeJS }}",
+  "headline" : "{{ .Title | safeJS }}",
+  "mainEntityOfPage": {
+    "@type": "WebPage",
+    "@id": "{{ .Permalink }}"
+  },
+  "description" : "{{ if .Description }}{{ .Description | plainify }}{{ else }}{{if .IsPage}}{{ .Summary | plainify  }}{{ end }}{{ end }}",
+  "inLanguage" : "{{ .Lang }}",
+  {{ if .Params.author -}}
+    "author": {
+      "@type": "Person",
+      "name": "{{ .Params.author }}"
+  },
+  {{- else if .Site.Params.author.name -}}
+    "author": {
+      "@type": "Person",
+      "name": "{{ .Site.Params.author.name }}"
+  },
+  {{- end }}
+  "copyrightYear" : "{{ .Site.Params.since }} - {{ .Site.Lastmod.Format "2006" }}",
+  {{ if not .PublishDate.IsZero -}}
+    "datePublished": "{{ .PublishDate.Format "2006-01-02T15:04:05-07:00" | safeHTML }}",
+  {{- else if not .Date.IsZero -}}
+    "datePublished": "{{ .Date.Format "2006-01-02T15:04:05-07:00" | safeHTML }}",
+  {{- end }}
+  {{ with .Lastmod -}}
+    "dateModified": "{{ .Format "2006-01-02T15:04:05-07:00" | safeHTML }}",
+  {{- end }}
+  "url" : "{{ .Permalink }}",
+  "wordCount" : "{{ .WordCount }}",
+  "image" : "{{ .Params.share_img | default .Params.image | default .Site.Params.logo | absURL }}",
+  "keywords" : [ "{{ range $i, $e := .Params.tags }}{{ if $i }}, {{ end }}{{ $e }}{{ end }}" ],
+  "publisher" : {
+    "@type": "Organization",
+    "name" : "{{ .Site.BaseURL }}",
+    "logo" : {
+        "@type" : "ImageObject",
+        "url" : "{{ .Site.Params.logo | absURL }}",
+        "height" :  60 ,
+        "width" :  60
+    }
+  }
+} </script>
diff --git a/static/css/custom.css b/static/css/custom.css
index edeaefb..df4966e 100644
--- a/static/css/custom.css
+++ b/static/css/custom.css
@@ -15,6 +15,7 @@ pre, code {
 hr.small {
   border-width: 5px;
   border-color: #00a185;
+  margin-top: 4rem;
 }
 
 h1,h2,h3,h4,h5,h6 {
@@ -129,6 +130,19 @@ footer .copyright {
   font-family: "Linux Biolinum O", 'Helvetica Neue', Helvetica, Arial, sans-serif;
 }
 
+.thumbApps {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 12px;
+    margin-bottom: 20px;
+}
+
+.thumbApps > a {
+    flex: 1 1 180px;
+    min-width: 0;
+    text-decoration: none;
+}
+
 .thumbApp {
     background-position: 50% 50%;
     background-repeat: no-repeat;
@@ -137,18 +151,14 @@ footer .copyright {
     box-shadow: 0px 0px 10px #555;
     font-family: "Linux Biolinum O", 'Helvetica Neue', Helvetica, Arial, sans-serif;
     height: 200px;
-    display: block;
-    float: left;
-    margin-right: 0.5%;
-    margin-bottom: 20px;
-    width: 24.5%;
-    min-width: 149px;
+    display: flex;
+    flex-direction: column;
+    justify-content: flex-end;
+    transition: transform 0.2s ease, box-shadow 0.2s ease;
 }
-
-@media only screen and (max-width: 330px) {
-    .thumbApp {
-        min-width: 100%;
-    }
+.thumbApps > a:hover .thumbApp {
+    transform: translateY(-4px) scale(1.02);
+    box-shadow: 0px 8px 20px #444;
 }
 @media only screen and (max-width: 850px) {
     .avatar-container {
@@ -164,9 +174,10 @@ footer .copyright {
 .thumbApp p {
     background-color: rgba(0,0,0,0.7);
     border-bottom: solid 4px #00a185;
+    border-radius: 0 0 0 1px;
     color: white;
     font-weight: bolder;
-    margin-top: 123px;
+    margin: 0;
     padding: 10px;
 }
 .thumbApp:hover p {
diff --git a/static/robots.txt b/static/robots.txt
new file mode 100644
index 0000000..633634f
--- /dev/null
+++ b/static/robots.txt
@@ -0,0 +1,4 @@
+User-agent: *
+Allow: /
+
+Sitemap: https://www.nemunai.re/sitemap.xml