diff --git a/public/about.md b/public/about.md
index 1b10f97..20495d9 100644
--- a/public/about.md
+++ b/public/about.md
@@ -1,5 +1,6 @@
 ---
 Title: About me
+Page type: profile
 ---
 
 I'm Sami Samhuri, a software developer and general technology geek. Sometimes I write my thoughts and post my projects here. I moved to [Victoria, BC][vic] in 2003 to study computer science at the [University of Victoria][uvic], and then dropped out a couple of years later.
diff --git a/public/images/me.jpg b/public/images/me.jpg
index ddd4c02..db89643 100644
Binary files a/public/images/me.jpg and b/public/images/me.jpg differ
diff --git a/samhuri.net/Sources/samhuri.net/Posts/JSONFeed/JSONFeed.swift b/samhuri.net/Sources/samhuri.net/Posts/JSONFeed/JSONFeed.swift
index 4e0569d..4f04169 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/JSONFeed/JSONFeed.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/JSONFeed/JSONFeed.swift
@@ -9,7 +9,6 @@ import Foundation
 
 struct JSONFeed {
     let path: String
-    let avatarPath: String?
     let iconPath: String?
     let faviconPath: String?
 }
diff --git a/samhuri.net/Sources/samhuri.net/Posts/JSONFeed/JSONFeedWriter.swift b/samhuri.net/Sources/samhuri.net/Posts/JSONFeed/JSONFeedWriter.swift
index 0a2b8cb..93b58aa 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/JSONFeed/JSONFeedWriter.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/JSONFeed/JSONFeedWriter.swift
@@ -39,7 +39,7 @@ private extension JSONFeedWriter {
     func buildFeed(site: Site, posts: [Post], renderer: JSONFeedRendering) throws -> Feed {
         let author = FeedAuthor(
             name: site.author,
-            avatar: jsonFeed.avatarPath.map(site.url.appendingPathComponent)?.absoluteString,
+            avatar: site.imageURL?.absoluteString,
             url: site.url.absoluteString
         )
         return Feed(
diff --git a/samhuri.net/Sources/samhuri.net/Posts/Model/Post.swift b/samhuri.net/Sources/samhuri.net/Posts/Model/Post.swift
index c8316af..271b042 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/Model/Post.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/Model/Post.swift
@@ -18,6 +18,7 @@ struct Post {
     let scripts: [Script]
     let styles: [Stylesheet]
     let body: String
+    let excerpt: String
     let path: String
 
     var isLink: Bool {
diff --git a/samhuri.net/Sources/samhuri.net/Posts/PostRepo.swift b/samhuri.net/Sources/samhuri.net/Posts/PostRepo.swift
index 5466e24..94ad21c 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/PostRepo.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/PostRepo.swift
@@ -11,6 +11,31 @@ import Ink
 struct RawPost {
     let slug: String
     let markdown: String
+
+    private static let StripMetadataRegex = try! Regex(#"---\n.*?---\n"#).dotMatchesNewlines()
+
+    private static let TextifyParenthesesLinksRegex = try! Regex(#"\[([\w\s.-_]*)\]\([^)]+\)"#)
+
+    private static let TextifyBracketLinksRegex = try! Regex(#"\[([\w\s.-_]*)\]\[[^\]]+\]"#)
+
+    private static let StripImagesRegex = try! Regex(#"!\[[\w\s.-_]*\]\([^)]+\)"#)
+
+    private static let WhitespaceRegex = try! Regex(#"\s+"#)
+
+    private static let StripHTMLTagsRegex = try! Regex(#"<[^>]+>"#)
+
+    var excerpt: String {
+        markdown
+            .replacing(Self.StripMetadataRegex, with: "")
+            .replacing(Self.StripImagesRegex, with: "") // must be before links for linked images
+            .replacing(Self.TextifyParenthesesLinksRegex) { match in match.output[1].substring ?? "" }
+            .replacing(Self.TextifyBracketLinksRegex) { match in match.output[1].substring ?? "" }
+            .replacing(Self.StripHTMLTagsRegex, with: "")
+            .replacing(Self.WhitespaceRegex, with: " ")
+            .trimmingPrefix(Self.WhitespaceRegex)
+            .prefix(300)
+        + "..."
+    }
 }
 
 final class PostRepo {
@@ -72,6 +97,7 @@ private extension PostRepo {
             scripts: metadata.scripts,
             styles: metadata.styles,
             body: result.html,
+            excerpt: rawPost.excerpt,
             path: path
         )
     }
diff --git a/samhuri.net/Sources/samhuri.net/Posts/PostWriter.swift b/samhuri.net/Sources/samhuri.net/Posts/PostWriter.swift
index c016d69..377fceb 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/PostWriter.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/PostWriter.swift
@@ -22,16 +22,18 @@ final class PostWriter {
 extension PostWriter {
     func writePosts(_ posts: [Post], for site: Site, to targetURL: URL, with renderer: PostsRendering) throws {
         for post in posts {
-            let postHTML = try renderer.renderPost(post, site: site)
-            let postURL = targetURL
-                .appendingPathComponent(outputPath)
-                .appendingPathComponent(filePath(date: post.date, slug: post.slug))
-            try fileWriter.write(string: postHTML, to: postURL)
+            let path = [
+                outputPath,
+                postPath(date: post.date, slug: post.slug),
+            ].joined(separator: "/")
+            let fileURL = targetURL.appending(path: path).appending(component: "index.html")
+            let postHTML = try renderer.renderPost(post, site: site, path: path)
+            try fileWriter.write(string: postHTML, to: fileURL)
         }
     }
 
-    private func filePath(date: Date, slug: String) -> String {
-        "/\(date.year)/\(Month(date).padded)/\(slug)/index.html"
+    private func postPath(date: Date, slug: String) -> String {
+        "\(date.year)/\(Month(date).padded)/\(slug)"
     }
 }
 
@@ -39,7 +41,7 @@ extension PostWriter {
 
 extension PostWriter {
     func writeRecentPosts(_ recentPosts: [Post], for site: Site, to targetURL: URL, with renderer: PostsRendering) throws {
-        let recentPostsHTML = try renderer.renderRecentPosts(recentPosts, site: site)
+        let recentPostsHTML = try renderer.renderRecentPosts(recentPosts, site: site, path: "/")
         let fileURL = targetURL.appendingPathComponent("index.html")
         try fileWriter.write(string: recentPostsHTML, to: fileURL)
     }
@@ -49,7 +51,7 @@ extension PostWriter {
 
 extension PostWriter {
     func writeArchive(posts: PostsByYear, for site: Site, to targetURL: URL, with renderer: PostsRendering) throws {
-        let archiveHTML = try renderer.renderArchive(postsByYear: posts, site: site)
+        let archiveHTML = try renderer.renderArchive(postsByYear: posts, site: site, path: outputPath)
         let archiveURL = targetURL.appendingPathComponent(outputPath).appendingPathComponent("index.html")
         try fileWriter.write(string: archiveHTML, to: archiveURL)
     }
@@ -61,7 +63,7 @@ extension PostWriter {
     func writeYearIndexes(posts: PostsByYear, for site: Site, to targetURL: URL, with renderer: PostsRendering) throws {
         for yearPosts in posts.byYear.values {
             let yearDir = targetURL.appendingPathComponent(yearPosts.path)
-            let yearHTML = try renderer.renderYearPosts(yearPosts, site: site)
+            let yearHTML = try renderer.renderYearPosts(yearPosts, site: site, path: yearPosts.path)
             let yearURL = yearDir.appendingPathComponent("index.html")
             try fileWriter.write(string: yearHTML, to: yearURL)
         }
@@ -75,7 +77,7 @@ extension PostWriter {
         for yearPosts in posts.byYear.values {
             for monthPosts in yearPosts.byMonth.values {
                 let monthDir = targetURL.appendingPathComponent(monthPosts.path)
-                let monthHTML = try renderer.renderMonthPosts(monthPosts, site: site)
+                let monthHTML = try renderer.renderMonthPosts(monthPosts, site: site, path: monthPosts.path)
                 let monthURL = monthDir.appendingPathComponent("index.html")
                 try fileWriter.write(string: monthHTML, to: monthURL)
             }
diff --git a/samhuri.net/Sources/samhuri.net/Posts/PostsPlugin+Builder.swift b/samhuri.net/Sources/samhuri.net/Posts/PostsPlugin+Builder.swift
index 8029bb9..2e4b1b4 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/PostsPlugin+Builder.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/PostsPlugin+Builder.swift
@@ -26,14 +26,12 @@ extension PostsPlugin {
 
         func jsonFeed(
             path: String? = nil,
-            avatarPath: String? = nil,
             iconPath: String? = nil,
             faviconPath: String? = nil
         ) -> Self {
             precondition(jsonFeed == nil, "JSON feed is already defined")
             jsonFeed = JSONFeed(
                 path: path ?? "feed.json",
-                avatarPath: avatarPath,
                 iconPath: iconPath,
                 faviconPath: faviconPath
             )
diff --git a/samhuri.net/Sources/samhuri.net/Posts/PostsRendering.swift b/samhuri.net/Sources/samhuri.net/Posts/PostsRendering.swift
index 0914839..28f02ad 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/PostsRendering.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/PostsRendering.swift
@@ -8,13 +8,13 @@
 import Foundation
 
 protocol PostsRendering {
-    func renderArchive(postsByYear: PostsByYear, site: Site) throws -> String
+    func renderArchive(postsByYear: PostsByYear, site: Site, path: String) throws -> String
 
-    func renderYearPosts(_ yearPosts: YearPosts, site: Site) throws -> String
+    func renderYearPosts(_ yearPosts: YearPosts, site: Site, path: String) throws -> String
 
-    func renderMonthPosts(_ posts: MonthPosts, site: Site) throws -> String
+    func renderMonthPosts(_ posts: MonthPosts, site: Site, path: String) throws -> String
 
-    func renderPost(_ post: Post, site: Site) throws -> String
+    func renderPost(_ post: Post, site: Site, path: String) throws -> String
 
-    func renderRecentPosts(_ posts: [Post], site: Site) throws -> String
+    func renderRecentPosts(_ posts: [Post], site: Site, path: String) throws -> String
 }
diff --git a/samhuri.net/Sources/samhuri.net/Posts/Templates/PageRenderer+JSONFeed.swift b/samhuri.net/Sources/samhuri.net/Posts/Templates/PageRenderer+JSONFeed.swift
index dcbe5c9..149e7cd 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/Templates/PageRenderer+JSONFeed.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/Templates/PageRenderer+JSONFeed.swift
@@ -10,8 +10,13 @@ import Plot
 
 extension PageRenderer: JSONFeedRendering {
     func renderJSONFeedPost(_ post: Post, site: Site) throws -> String {
-        let context = SiteContext(site: site, subtitle: post.title, templateAssets: post.templateAssets)
         let url = site.url.appendingPathComponent(post.path)
+        let context = SiteContext(
+            site: site,
+            canonicalURL: url,
+            subtitle: post.title,
+            templateAssets: post.templateAssets
+        )
         // Turn relative URLs into absolute ones.
         return Node.feedPost(post, url: url, styles: context.styles)
             .render(indentedBy: .spaces(2))
diff --git a/samhuri.net/Sources/samhuri.net/Posts/Templates/PageRenderer+Posts.swift b/samhuri.net/Sources/samhuri.net/Posts/Templates/PageRenderer+Posts.swift
index 44418ff..3a1bd3b 100644
--- a/samhuri.net/Sources/samhuri.net/Posts/Templates/PageRenderer+Posts.swift
+++ b/samhuri.net/Sources/samhuri.net/Posts/Templates/PageRenderer+Posts.swift
@@ -9,29 +9,62 @@ import Foundation
 import Plot
 
 extension PageRenderer: PostsRendering {
-    func renderArchive(postsByYear: PostsByYear, site: Site) throws -> String {
-        let context = SiteContext(site: site, subtitle: "Archive")
+    func renderArchive(postsByYear: PostsByYear, site: Site, path: String) throws -> String {
+        let context = SiteContext(
+            site: site,
+            canonicalURL: site.url.appending(path: path),
+            subtitle: "Archive",
+            description: "Archive of all posts"
+        )
         return render(.archive(postsByYear), context: context)
     }
 
-    func renderYearPosts(_ yearPosts: YearPosts, site: Site) throws -> String {
-        let context = SiteContext(site: site, subtitle: yearPosts.title)
+    func renderYearPosts(_ yearPosts: YearPosts, site: Site, path: String) throws -> String {
+        let context = SiteContext(
+            site: site,
+            canonicalURL: site.url.appending(path: path),
+            subtitle: yearPosts.title,
+            description: "Archive of all posts from \(yearPosts.year)",
+            pageType: "article"
+        )
         return render(.yearPosts(yearPosts), context: context)
     }
 
-    func renderMonthPosts(_ posts: MonthPosts, site: Site) throws -> String {
+    func renderMonthPosts(_ posts: MonthPosts, site: Site, path: String) throws -> String {
+        let subtitle = "\(posts.month.name) \(posts.year)"
         let assets = posts.posts.templateAssets
-        let context = SiteContext(site: site, subtitle: "\(posts.month.name) \(posts.year)", templateAssets: assets)
+        let context = SiteContext(
+            site: site,
+            canonicalURL: site.url.appending(path: path),
+            subtitle: subtitle,
+            description: "Archive of all posts from \(subtitle)",
+            pageType: "article",
+            templateAssets: assets
+        )
         return render(.monthPosts(posts), context: context)
     }
 
-    func renderPost(_ post: Post, site: Site) throws -> String {
-        let context = SiteContext(site: site, subtitle: post.title, templateAssets: post.templateAssets)
+    func renderPost(_ post: Post, site: Site, path: String) throws -> String {
+        let context = SiteContext(
+            site: site,
+            canonicalURL: site.url.appending(path: path),
+            subtitle: post.title,
+            description: post.excerpt,
+            pageType: "article",
+            templateAssets: post.templateAssets
+        )
         return render(.post(post, articleClass: "container"), context: context)
     }
 
-    func renderRecentPosts(_ posts: [Post], site: Site) throws -> String {
-        let context = SiteContext(site: site, subtitle: nil, templateAssets: posts.templateAssets)
+    func renderRecentPosts(_ posts: [Post], site: Site, path: String) throws -> String {
+        let context = SiteContext(
+            site: site,
+            canonicalURL: site.url.appending(path: path),
+            subtitle: nil,
+            description: "Recent posts",
+            pageType: "article",
+            templateAssets: posts.templateAssets
+        )
         return render(.recentPosts(posts), context: context)
     }
 }
diff --git a/samhuri.net/Sources/samhuri.net/Projects/ProjectsPlugin.swift b/samhuri.net/Sources/samhuri.net/Projects/ProjectsPlugin.swift
index 40a0bb5..c4df27a 100644
--- a/samhuri.net/Sources/samhuri.net/Projects/ProjectsPlugin.swift
+++ b/samhuri.net/Sources/samhuri.net/Projects/ProjectsPlugin.swift
@@ -54,12 +54,13 @@ final class ProjectsPlugin: Plugin {
 
         let projectsDir = targetURL.appendingPathComponent(outputPath)
         let projectsURL = projectsDir.appendingPathComponent("index.html")
-        let projectsHTML = try renderer.renderProjects(projects, site: site)
+        let projectsHTML = try renderer.renderProjects(projects, site: site, path: outputPath)
         try fileWriter.write(string: projectsHTML, to: projectsURL)
 
         for project in projects {
             let projectURL = projectsDir.appendingPathComponent("\(project.title)/index.html")
-            let projectHTML = try renderer.renderProject(project, site: site, assets: projectAssets)
+            let path = [outputPath, project.title].joined(separator: "/")
+            let projectHTML = try renderer.renderProject(project, site: site, path: path, assets: projectAssets)
             try fileWriter.write(string: projectHTML, to: projectURL)
         }
     }
diff --git a/samhuri.net/Sources/samhuri.net/Projects/ProjectsRenderer.swift b/samhuri.net/Sources/samhuri.net/Projects/ProjectsRenderer.swift
index 912c687..f06c793 100644
--- a/samhuri.net/Sources/samhuri.net/Projects/ProjectsRenderer.swift
+++ b/samhuri.net/Sources/samhuri.net/Projects/ProjectsRenderer.swift
@@ -8,7 +8,7 @@
 import Foundation
 
 protocol ProjectsRenderer {
-    func renderProjects(_ projects: [Project], site: Site) throws -> String
+    func renderProjects(_ projects: [Project], site: Site, path: String) throws -> String
 
-    func renderProject(_ project: Project, site: Site, assets: TemplateAssets) throws -> String
+    func renderProject(_ project: Project, site: Site, path: String, assets: TemplateAssets) throws -> String
 }
diff --git a/samhuri.net/Sources/samhuri.net/Projects/Templates/PageRenderer+Projects.swift b/samhuri.net/Sources/samhuri.net/Projects/Templates/PageRenderer+Projects.swift
index e8a1b0d..485a109 100644
--- a/samhuri.net/Sources/samhuri.net/Projects/Templates/PageRenderer+Projects.swift
+++ b/samhuri.net/Sources/samhuri.net/Projects/Templates/PageRenderer+Projects.swift
@@ -9,14 +9,25 @@ import Foundation
 import Plot
 
 extension PageRenderer: ProjectsRenderer {
-    func renderProjects(_ projects: [Project], site: Site) throws -> String {
-        let context = SiteContext(site: site, subtitle: "Projects", templateAssets: .empty())
+    func renderProjects(_ projects: [Project], site: Site, path: String) throws -> String {
+        let context = SiteContext(
+            site: site,
+            canonicalURL: site.url.appending(path: path),
+            subtitle: "Projects",
+            templateAssets: .empty()
+        )
         return render(.projects(projects), context: context)
     }
 
-    func renderProject(_ project: Project, site: Site, assets: TemplateAssets) throws -> String {
+    func renderProject(_ project: Project, site: Site, path: String, assets: TemplateAssets) throws -> String {
         let projectContext = ProjectContext(project: project, site: site, templateAssets: assets)
-        let context = SiteContext(site: site, subtitle: project.title, templateAssets: assets)
+        let context = SiteContext(
+            site: site,
+            canonicalURL: site.url.appending(path: path),
+            subtitle: project.title,
+            description: project.description,
+            templateAssets: assets
+        )
         return render(.project(projectContext), context: context)
     }
 }
diff --git a/samhuri.net/Sources/samhuri.net/Projects/Templates/ProjectContext.swift b/samhuri.net/Sources/samhuri.net/Projects/Templates/ProjectContext.swift
index 1ac3cce..3e0fd88 100644
--- a/samhuri.net/Sources/samhuri.net/Projects/Templates/ProjectContext.swift
+++ b/samhuri.net/Sources/samhuri.net/Projects/Templates/ProjectContext.swift
@@ -10,13 +10,16 @@ import Foundation
 struct ProjectContext: TemplateContext {
     let site: Site
     let title: String
+    let canonicalURL: URL
     let description: String
+    let pageType = "website"
     let githubURL: URL
     let templateAssets: TemplateAssets
 
     init(project: Project, site: Site, templateAssets: TemplateAssets) {
         self.site = site
         self.title = project.title
+        self.canonicalURL = site.url.appending(components: "projects", project.title)
         self.description = project.description
         self.githubURL = URL(string: "https://github.com/samsonjs/\(title)")!
         self.templateAssets = templateAssets
diff --git a/samhuri.net/Sources/samhuri.net/Site/MarkdownRenderer.swift b/samhuri.net/Sources/samhuri.net/Site/MarkdownRenderer.swift
index 9912b66..2343ab3 100644
--- a/samhuri.net/Sources/samhuri.net/Site/MarkdownRenderer.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/MarkdownRenderer.swift
@@ -18,26 +18,31 @@ final class MarkdownRenderer: Renderer {
         self.fileWriter = fileWriter
     }
 
-    func canRenderFile(named filename: String, withExtension ext: String) -> Bool {
+    func canRenderFile(named filename: String, withExtension ext: String?) -> Bool {
         ext == "md"
     }
 
     /// Parse Markdown and render it as HTML, running it through a Stencil template.
     func render(site: Site, fileURL: URL, targetDir: URL) throws {
-        let bodyMarkdown = try String(contentsOf: fileURL)
-        let bodyHTML = markdownParser.html(from: bodyMarkdown).trimmingCharacters(in: .whitespacesAndNewlines)
         let metadata = try markdownMetadata(from: fileURL)
-        let pageHTML = try pageRenderer.renderPage(site: site, bodyHTML: bodyHTML, metadata: metadata)
-
         let mdFilename = fileURL.lastPathComponent
         let showExtension = mdFilename == "index.md" || metadata["Show extension"]?.lowercased() == "yes"
-        let htmlPath: String
-        if showExtension {
-            htmlPath = mdFilename.replacingOccurrences(of: ".md", with: ".html")
+        let htmlPath: String = if showExtension {
+            mdFilename.replacingOccurrences(of: ".md", with: ".html")
         }
         else {
-            htmlPath = mdFilename.replacingOccurrences(of: ".md", with: "/index.html")
+            mdFilename.replacingOccurrences(of: ".md", with: "/index.html")
         }
+        let bodyMarkdown = try String(contentsOf: fileURL)
+        let bodyHTML = markdownParser.html(from: bodyMarkdown).trimmingCharacters(in: .whitespacesAndNewlines)
+        let url = site.url.appending(path: htmlPath.replacingOccurrences(of: "/index.html", with: ""))
+        let pageHTML = try pageRenderer.renderPage(
+            site: site,
+            url: url,
+            bodyHTML: bodyHTML,
+            metadata: metadata
+        )
+
         let htmlURL = targetDir.appendingPathComponent(htmlPath)
         try fileWriter.write(string: pageHTML, to: htmlURL)
     }
diff --git a/samhuri.net/Sources/samhuri.net/Site/PageRendering.swift b/samhuri.net/Sources/samhuri.net/Site/PageRendering.swift
index 06162bd..e00adb3 100644
--- a/samhuri.net/Sources/samhuri.net/Site/PageRendering.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/PageRendering.swift
@@ -8,5 +8,5 @@
 import Foundation
 
 protocol PageRendering {
-    func renderPage(site: Site, bodyHTML: String, metadata: [String: String]) throws -> String
+    func renderPage(site: Site, url: URL, bodyHTML: String, metadata: [String: String]) throws -> String
 }
diff --git a/samhuri.net/Sources/samhuri.net/Site/Renderer.swift b/samhuri.net/Sources/samhuri.net/Site/Renderer.swift
index 541ca09..abbae38 100644
--- a/samhuri.net/Sources/samhuri.net/Site/Renderer.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/Renderer.swift
@@ -8,7 +8,7 @@
 import Foundation
 
 protocol Renderer {
-    func canRenderFile(named filename: String, withExtension ext: String) -> Bool
+    func canRenderFile(named filename: String, withExtension ext: String?) -> Bool
 
     func render(site: Site, fileURL: URL, targetDir: URL) throws
 }
diff --git a/samhuri.net/Sources/samhuri.net/Site/Site+Builder.swift b/samhuri.net/Sources/samhuri.net/Site/Site+Builder.swift
index 97e1fca..ae5f648 100644
--- a/samhuri.net/Sources/samhuri.net/Site/Site+Builder.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/Site+Builder.swift
@@ -12,6 +12,7 @@ extension Site {
         private let title: String
         private let description: String
         private let author: String
+        private let imageURL: URL?
         private let email: String
         private let url: URL
 
@@ -25,12 +26,20 @@ extension Site {
             title: String,
             description: String,
             author: String,
+            imagePath: String?,
             email: String,
             url: URL
         ) {
             self.title = title
             self.description = description
             self.author = author
+            self.imageURL = imagePath.flatMap { path in
+                var imageURL = url
+                for component in path.split(separator: "/") {
+                    imageURL = imageURL.appending(component: component)
+                }
+                return imageURL
+            }
             self.email = email
             self.url = url
         }
@@ -61,6 +70,7 @@ extension Site {
                 email: email,
                 title: title,
                 description: description,
+                imageURL: imageURL,
                 url: url,
                 scripts: scripts,
                 styles: styles,
diff --git a/samhuri.net/Sources/samhuri.net/Site/Site.swift b/samhuri.net/Sources/samhuri.net/Site/Site.swift
index 41722ab..3ef2f75 100644
--- a/samhuri.net/Sources/samhuri.net/Site/Site.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/Site.swift
@@ -12,6 +12,7 @@ struct Site {
     let email: String
     let title: String
     let description: String
+    let imageURL: URL?
     let url: URL
     let scripts: [Script]
     let styles: [Stylesheet]
diff --git a/samhuri.net/Sources/samhuri.net/Site/SiteGenerator.swift b/samhuri.net/Sources/samhuri.net/Site/SiteGenerator.swift
index c38139a..5265c55 100644
--- a/samhuri.net/Sources/samhuri.net/Site/SiteGenerator.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/SiteGenerator.swift
@@ -70,7 +70,7 @@ final class SiteGenerator {
             try fileManager.removeItem(at: targetURL)
         }
 
-        let ext = String(filename.split(separator: ".").last!)
+        let ext = filename.split(separator: ".").last.flatMap { String($0) }
         for renderer in site.renderers {
             if renderer.canRenderFile(named: filename, withExtension: ext) {
                 try renderer.render(site: site, fileURL: sourceURL, targetDir: targetDir)
diff --git a/samhuri.net/Sources/samhuri.net/Site/Templates/PageRenderer.swift b/samhuri.net/Sources/samhuri.net/Site/Templates/PageRenderer.swift
index ebe0345..ffc653f 100644
--- a/samhuri.net/Sources/samhuri.net/Site/Templates/PageRenderer.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/Templates/PageRenderer.swift
@@ -9,18 +9,25 @@ import Foundation
 import Plot
 
 final class PageRenderer {
-    func render(_ body: Node<HTML.BodyContext>, context: TemplateContext) -> String {
+    func render<Context: TemplateContext>(_ body: Node<HTML.BodyContext>, context: Context) -> String {
         Template.site(body: body, context: context).render(indentedBy: .spaces(2))
     }
 }
 
 extension PageRenderer: PageRendering {
-    func renderPage(site: Site, bodyHTML: String, metadata: [String: String]) throws -> String {
+    func renderPage(site: Site, url: URL, bodyHTML: String, metadata: [String: String]) throws -> String {
         let pageTitle = metadata["Title"]
+        let pageType = metadata["Page type"]
         let scripts = metadata.commaSeparatedList(key: "Scripts").map(Script.init(ref:))
         let styles = metadata.commaSeparatedList(key: "Styles").map(Stylesheet.init(ref:))
         let assets = TemplateAssets(scripts: scripts, styles: styles)
-        let context = SiteContext(site: site, subtitle: pageTitle, templateAssets: assets)
+        let context = SiteContext(
+            site: site,
+            canonicalURL: url,
+            subtitle: pageTitle,
+            pageType: pageType,
+            templateAssets: assets
+        )
         return render(.page(title: pageTitle ?? "", bodyHTML: bodyHTML), context: context)
     }
 }
diff --git a/samhuri.net/Sources/samhuri.net/Site/Templates/SiteContext.swift b/samhuri.net/Sources/samhuri.net/Site/Templates/SiteContext.swift
index 0554472..080ed69 100644
--- a/samhuri.net/Sources/samhuri.net/Site/Templates/SiteContext.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/Templates/SiteContext.swift
@@ -9,12 +9,26 @@ import Foundation
 
 struct SiteContext: TemplateContext {
     let site: Site
+    let canonicalURL: URL
     let subtitle: String?
+    let description: String
+    let pageType: String
     let templateAssets: TemplateAssets
 
-    init(site: Site, subtitle: String? = nil, templateAssets: TemplateAssets = .empty()) {
+    init(
+        site: Site,
+        canonicalURL: URL,
+        subtitle: String? = nil,
+        description: String? = nil,
+        pageType: String? = nil,
+        templateAssets: TemplateAssets = .empty()
+    ) {
         self.site = site
+        self.canonicalURL = canonicalURL
         self.subtitle = subtitle
+        self.description = description ?? site.description
+        self.pageType = pageType ?? "website"
+
         self.templateAssets = templateAssets
     }
 
@@ -26,15 +40,3 @@ struct SiteContext: TemplateContext {
         return "\(site.title): \(subtitle)"
     }
 }
-
-extension SiteContext {
-    var dictionary: [String: Any] {
-        [
-            "site": site,
-            "title": site.title,
-            "styles": site.styles,
-            "scripts": site.scripts,
-            "currentYear": Date().year,
-        ]
-    }
-}
diff --git a/samhuri.net/Sources/samhuri.net/Site/Templates/SiteTemplate.swift b/samhuri.net/Sources/samhuri.net/Site/Templates/SiteTemplate.swift
index 8688596..0629a8b 100644
--- a/samhuri.net/Sources/samhuri.net/Site/Templates/SiteTemplate.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/Templates/SiteTemplate.swift
@@ -8,35 +8,51 @@
 import Foundation
 import Plot
 
+private extension Node where Context == HTML.DocumentContext {
+    /// Add a `<head>` HTML element within the current context, which
+    /// contains non-visual elements, such as stylesheets and metadata.
+    /// - parameter nodes: The element's attributes and child elements.
+    static func head(_ nodes: [Node<HTML.HeadContext>]) -> Node {
+        .element(named: "head", nodes: nodes)
+    }
+}
+
 enum Template {
-    static func site(body: Node<HTML.BodyContext>, context: TemplateContext) -> HTML {
-        HTML(
+    static func site<Context: TemplateContext>(body: Node<HTML.BodyContext>, context: Context) -> HTML {
+        // Broken up to fix a build error because Swift can't type-check the varargs version.
+        let headNodes: [Node<HTML.HeadContext>] = [
+            .encoding(.utf8),
+            .title(context.title),
+            .description(context.description),
+            .siteName(context.site.title),
+            .url(context.canonicalURL),
+            .meta(.property("og:image"), .content(context.site.imageURL?.absoluteString ?? "")),
+            .meta(.property("og:type"), .content(context.pageType)),
+            .meta(.property("article:author"), .content(context.site.author)),
+            .meta(.name("twitter:card"), .content("summary")),
+            .rssFeedLink(context.url(for: "feed.xml"), title: context.site.title),
+            .jsonFeedLink(context.url(for: "feed.json"), title: context.site.title),
+            .meta(.name("fediverse:creator"), .content("@sjs@techhub.social")),
+            .link(.rel(.author), .type("text/plain"), .href(context.url(for: "humans.txt"))),
+            .link(.rel(.icon), .type("image/png"), .href(context.imageURL("favicon-32x32.png"))),
+            .link(.rel(.shortcutIcon), .href(context.imageURL("favicon.icon"))),
+            .appleTouchIcon(context.imageURL("apple-touch-icon.png")),
+            .safariPinnedTabIcon(context.imageURL("safari-pinned-tab.svg"), color: "#aa0000"),
+            .link(.attribute(named: "rel", value: "manifest"), .href(context.imageURL("manifest.json"))),
+            .meta(.name("msapplication-config"), .content(context.imageURL("browserconfig.xml").absoluteString)),
+            .meta(.name("theme-color"), .content("#121212")), // matches header
+            .meta(.name("viewport"), .content("width=device-width, initial-scale=1.0, viewport-fit=cover")),
+            .link(.rel(.dnsPrefetch), .href("https://use.typekit.net")),
+            .link(.rel(.dnsPrefetch), .href("https://netdna.bootstrapcdn.com")),
+            .link(.rel(.dnsPrefetch), .href("https://gist.github.com")),
+            .group(context.styles.map { url in
+                    .link(.rel(.stylesheet), .type("text/css"), .href(url))
+            }),
+        ]
+        return HTML(
             .lang(.english),
             .comment("meow"),
-            .head(
-                .encoding(.utf8),
-                .title(context.title),
-                .siteName(context.site.title),
-                .url(context.site.url),
-                .rssFeedLink(context.url(for: "feed.xml"), title: context.site.title),
-                .jsonFeedLink(context.url(for: "feed.json"), title: context.site.title),
-                .meta(.name("fediverse:creator"), .content("@sjs@techhub.social")),
-                .link(.rel(.author), .type("text/plain"), .href(context.url(for: "humans.txt"))),
-                .link(.rel(.icon), .type("image/png"), .href(context.imageURL("favicon-32x32.png"))),
-                .link(.rel(.shortcutIcon), .href(context.imageURL("favicon.icon"))),
-                .appleTouchIcon(context.imageURL("apple-touch-icon.png")),
-                .safariPinnedTabIcon(context.imageURL("safari-pinned-tab.svg"), color: "#aa0000"),
-                .link(.attribute(named: "rel", value: "manifest"), .href(context.imageURL("manifest.json"))),
-                .meta(.name("msapplication-config"), .content(context.imageURL("browserconfig.xml").absoluteString)),
-                .meta(.name("theme-color"), .content("#121212")), // matches header
-                .meta(.name("viewport"), .content("width=device-width, initial-scale=1.0, viewport-fit=cover")),
-                .link(.rel(.dnsPrefetch), .href("https://use.typekit.net")),
-                .link(.rel(.dnsPrefetch), .href("https://netdna.bootstrapcdn.com")),
-                .link(.rel(.dnsPrefetch), .href("https://gist.github.com")),
-                .group(context.styles.map { url in
-                    .link(.rel(.stylesheet), .type("text/css"), .href(url))
-                })
-            ),
+            .head(headNodes),
             .body(
                 .header(.class("primary"),
                     .div(.class("title"),
diff --git a/samhuri.net/Sources/samhuri.net/Site/Templates/TemplateContext.swift b/samhuri.net/Sources/samhuri.net/Site/Templates/TemplateContext.swift
index 1e9fda3..4dbf2df 100644
--- a/samhuri.net/Sources/samhuri.net/Site/Templates/TemplateContext.swift
+++ b/samhuri.net/Sources/samhuri.net/Site/Templates/TemplateContext.swift
@@ -12,6 +12,9 @@ protocol TemplateContext {
 
     var site: Site { get }
     var title: String { get }
+    var canonicalURL: URL { get }
+    var description: String { get }
+    var pageType: String { get }
     var templateAssets: TemplateAssets { get }
 
     // These all have default implementations
diff --git a/samhuri.net/Sources/samhuri.net/samhuri.net.swift b/samhuri.net/Sources/samhuri.net/samhuri.net.swift
index c190ceb..088cbf6 100644
--- a/samhuri.net/Sources/samhuri.net/samhuri.net.swift
+++ b/samhuri.net/Sources/samhuri.net/samhuri.net.swift
@@ -45,7 +45,6 @@ public extension samhuri {
             let postsPlugin = PostsPlugin.Builder(renderer: renderer)
                 .path("posts")
                 .jsonFeed(
-                    avatarPath: "images/me.jpg",
                     iconPath: "images/apple-touch-icon-300.png",
                     faviconPath: "images/apple-touch-icon-80.png"
                 )
@@ -54,8 +53,9 @@ public extension samhuri {
 
             return Site.Builder(
                 title: "samhuri.net",
-                description: "just some blog",
+                description: "Sami Samhuri's blog about programming, mainly about iOS and Ruby and Rails these days.",
                 author: "Sami Samhuri",
+                imagePath: "images/me.jpg",
                 email: "sami@samhuri.net",
                 url: siteURLOverride ?? URL(string: "https://samhuri.net")!
             )