diff --git a/eleventy.config.js b/eleventy.config.js
index 5ce258c..41dc78d 100644
--- a/eleventy.config.js
+++ b/eleventy.config.js
@@ -9,86 +9,107 @@ const IMAGE_SIZES = [300, 600, 900, 1200]
 
 module.exports = function(eleventyConfig) {
 
-  // https://www.11ty.dev/docs/data-deep-merge/
-  eleventyConfig.setDataDeepMerge(true)
+	// https://www.11ty.dev/docs/data-deep-merge/
+	eleventyConfig.setDataDeepMerge(true)
 
-  // https://www.11ty.dev/docs/plugins/image/#make-your-own-markup
-  eleventyConfig.addShortcode("image", async (src, alt) => {
-    const metadata = await pluginImage(`./_src${src}`, {
-      widths: [...IMAGE_SIZES, 'auto'],
-      formats: ['auto', 'webp', 'avif'],
-      // https://www.11ty.dev/docs/plugins/image/#custom-filenames
-      filenameFormat: (id, src, width, format) =>
-        `${path.basename(src,path.extname(src))}-${width}w.${format}`,
-      // https://alexpeterhall.com/blog/2021/04/05/responsive-images-eleventy/#eleventy-configuration
-      urlPath: path.dirname(src),
-      outputDir: `_site/${path.dirname(src)}`,
-    })
+		// Optimized images
+	// https://www.11ty.dev/docs/plugins/image/#make-your-own-markup
+	eleventyConfig.addShortcode('image', async (src, alt) => {
+		const metadata = await pluginImage(`./_src${src}`, {
+			widths: [...IMAGE_SIZES, 'auto'],
+			formats: ['auto', 'webp', 'avif'],
+			// https://www.11ty.dev/docs/plugins/image/#custom-filenames
+			filenameFormat: (id, src, width, format) =>
+				`${path.basename(src,path.extname(src))}-${width}w.${format}`,
+			// https://alexpeterhall.com/blog/2021/04/05/responsive-images-eleventy/#eleventy-configuration
+			urlPath: path.dirname(src),
+			outputDir: `_site/${path.dirname(src)}`,
+		})
 		const lowsrc = metadata.webp[0]
 		const highsrc = metadata.webp[metadata.webp.length - 1]
-		return `<a href="${src}"><picture>\n${Object.values(metadata).map(imageFormat =>
-				`\t<source type="${imageFormat[0].sourceType}" srcset="${imageFormat.map(entry => entry.srcset).join(", ")}" sizes="${IMAGE_SIZES.reverse().reduce((str,size) => 
-					`(max-width:${size}px) ${size}px, ${str}`,'100vw')}">`).join("\n")}\n\t<img src="${lowsrc.url}" width="${highsrc.width}" height="${highsrc.height}" alt="${alt}" decoding="async">\n</picture></a>`
+		return `<a href="${src}"><picture>${Object.values(metadata).map(imageFormat =>
+				`\t<source type="${imageFormat[0].sourceType}" srcset="${imageFormat.map(entry => entry.srcset).join(', ')}" sizes="${IMAGE_SIZES.reverse().reduce((str,size) => 
+					`(max-width:${size}px) ${size}px, ${str}`,'100vw')}">`).join('')}<img src="${lowsrc.url}" width="${highsrc.width}" height="${highsrc.height}" alt="${alt}" decoding="async"></picture></a>`
 	})
 
-  eleventyConfig.addFilter('readableDate', dateObj => {
-    return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat('dd LLL yyyy')
-  })
+	// Video embed
+	eleventyConfig.addShortcode('vid', (src, autoplay=false) =>
+		`<video controls ${(autoplay)?'autoplay':''}width="100%"><source src="${src}" type="video/${src.split('.').pop()}">Embedded videos are not supported in this browser.</video>`
+	)
+	eleventyConfig.addShortcode('vidraw', (src) =>
+		`<video width="100%"><source src="${src}">Embedded videos are not supported in this browser.</video>`
+	)
 
-  // https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
-  eleventyConfig.addFilter('htmlDateString', (dateObj) => {
-    return DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat('yyyy-LL-dd')
-  })
+	// YouTube
+	eleventyConfig.addShortcode('yt', (shortcode) =>
+		`<iframe width="100%" height="500vh" src="https://www.youtube.com/embed/${shortcode}" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>`
+	)
 
-  // Get the first `n` elements of a collection.
-  eleventyConfig.addFilter('head', (array, n) => {
-    if( n < 0 ) {
-      return array.slice(n)
-    }
-    return array.slice(0, n)
-  })
+	// Audio embed
+	eleventyConfig.addShortcode('audio', (src, fmt) =>
+		`<audio controls><source src="${src}" type="audio/${fmt}">Embedded audio is not supported in this browser.</audio>`
+	)
+	
+	// iFrame
+	eleventyConfig.addShortcode('iframe', (url, height) =>
+		`<iframe width="100%" height="${height}" src="${url}"</iframe>`
+	)
 
-  // Return the smallest number argument
-  eleventyConfig.addFilter('min', (...numbers) => {
-    return Math.min.apply(null, numbers)
-  })
+	eleventyConfig.addFilter('readableDate', dateObj =>
+		DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat('dd LLL yyyy')
+	)
 
-  eleventyConfig.addFilter('filterTagList', tags => {
-    // should match the list in tags.njk
-    return (tags || []).filter(tag => ['all', 'nav', 'post', 'posts'].indexOf(tag) === -1)
-  })
+	// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-date-string
+	eleventyConfig.addFilter('htmlDateString', (dateObj) =>
+		DateTime.fromJSDate(dateObj, {zone: 'utc'}).toFormat('yyyy-LL-dd')
+	)
 
-  // Convert text to hex
-  eleventyConfig.addFilter('toHex', (str) => {
-    let hex = ''
-    for(let i=0; i<str.length; i++){
-      let h = str.codePointAt(i).toString(16)
-      if(h.length===1) h='0'+h
-      hex += h + ' '
-      if( h.length>4 ) i++
-    } return hex.trim()
-  })
+	// Get the first `n` elements of a collection.
+	eleventyConfig.addFilter('head', (array, n) =>
+		(n<0)? array.slice(n): array.slice(0, n)
+	)
 
-  // Fold lines
-  eleventyConfig.addFilter('fold', (str, size) => {
-    // https://stackoverflow.com/a/29202760/3006854
-    const numChunks = Math.ceil(str.length/size)
-    const chunks = new Array(numChunks)
-    for (let i = 0, o = 0; i < numChunks; ++i, o += size)
-      chunks[i] = str.substr(o, size)
-    return chunks.join('\n')
-  })
+	// Return the smallest number argument
+	eleventyConfig.addFilter('min', (...numbers) =>
+		Math.min.apply(null, numbers)
+	)
 
-  // Create an array of all tags
-  eleventyConfig.addCollection('tagList', function(collection) {
-    let tagSet = new Set()
-    collection.getAll().forEach(item => {
-      (item.data.tags || []).forEach(tag => tagSet.add(tag))
-    }); return [...tagSet]
-  })
+	eleventyConfig.addFilter('filterTagList', tags =>
+		// should match the list in tags.njk
+		(tags || []).filter(tag => ['all', 'nav', 'post', 'posts'].indexOf(tag) === -1)
+	)
+ 
+	// Convert text to hex
+	eleventyConfig.addFilter('toHex', (str) => {
+		let hex = ''
+		for(let i=0; i<str.length; i++){
+			let h = str.codePointAt(i).toString(16)
+			if(h.length===1) h='0'+h
+			hex += h + ' '
+			if( h.length>4 ) i++
+		} return hex.trim()
+	})
 
-  // Customize Markdown library and settings:
-	eleventyConfig.setLibrary("md", markdownIt({
+	// Fold lines
+	eleventyConfig.addFilter('fold', (str, size) => {
+		// https://stackoverflow.com/a/29202760/3006854
+		const numChunks = Math.ceil(str.length/size)
+		const chunks = new Array(numChunks)
+		for (let i = 0, o = 0; i < numChunks; ++i, o += size)
+			chunks[i] = str.substr(o, size)
+		return chunks.join('\n')
+	})
+
+	// Create an array of all tags
+	eleventyConfig.addCollection('tagList', function(collection) {
+		let tagSet = new Set()
+		collection.getAll().forEach(item => {
+			(item.data.tags || []).forEach(tag => tagSet.add(tag))
+		}); return [...tagSet]
+	})
+
+	// Customize Markdown library and settings:
+	eleventyConfig.setLibrary('md', markdownIt({
 		html: true,
 		breaks: true,
 		linkify: true,
@@ -99,73 +120,72 @@ module.exports = function(eleventyConfig) {
 		tabIndex: false,
 	}))
 
-  // Override Browsersync defaults (used only with --serve)
-  eleventyConfig.setBrowserSyncConfig({
-    callbacks: {
-      ready: async (err, browserSync) => {
-        const content_404 = await fs.readFile('_site/404.html')
+	// Override Browsersync defaults (used only with --serve)
+	eleventyConfig.setBrowserSyncConfig({
+		callbacks: {
+			ready: async (err, browserSync) => {
+				const content_404 = await fs.readFile('_site/404.html')
 
-        browserSync.addMiddleware("*", (req, res) => {
-          // Provides the 404 content without redirect.
-          res.writeHead(404, {"Content-Type": "text/html charset=UTF-8"})
-          res.write(content_404)
-          res.end()
-        })
-      },
-    },
-    ui: false,
-    ghostMode: false
-  })
+				browserSync.addMiddleware('*', (req, res) => {
+					// Provides the 404 content without redirect.
+					res.writeHead(404, {
+						'Content-Type': 'text/html charset=UTF-8' })
+					res.write(content_404)
+					res.end()
+				})
+			},
+		},
+		ui: false,
+		ghostMode: false
+	})
 
-  return {
-    // Control which files Eleventy will process
-    // e.g.: *.md, *.njk, *.html, *.liquid
-    templateFormats: [
-      "md",
-      "njk",
-      'html',
-      'liquid',
-      'css',
-      'png',
-      'webp',
-      'jpg',
-      'gif',
-      'js',
-      'crt',
-      'pem',
-      'ttf',
-      'webmanifest',
-    ],
+	return {
+		templateFormats: [
+			'md',
+			'njk',
+			'html',
+			'liquid',
+			'css',
+			'png',
+			'webp',
+			'jpg',
+			'gif',
+			'js',
+			'crt',
+			'pem',
+			'ttf',
+			'webmanifest',
+		],
 
-    // -----------------------------------------------------------------
-    // If your site deploys to a subdirectory, change `pathPrefix`.
-    // Don’t worry about leading and trailing slashes, we normalize these.
+		// -----------------------------------------------------------------
+		// If your site deploys to a subdirectory, change `pathPrefix`.
+		// Don’t worry about leading and trailing slashes, we normalize these.
 
-    // If you don’t have a subdirectory, use "" or "/' (they do the same thing)
-    // This is only used for link URLs (it does not affect your file structure)
-    // Best paired with the `url` filter: https://www.11ty.dev/docs/filters/url/
+		// If you don’t have a subdirectory, use "" or "/' (they do the same thing)
+		// This is only used for link URLs (it does not affect your file structure)
+		// Best paired with the `url` filter: https://www.11ty.dev/docs/filters/url/
 
-    // You can also pass this in on the command line using `--pathprefix`
+		// You can also pass this in on the command line using `--pathprefix`
 
-    // Optional (default is shown)
-    pathPrefix: '/',
-    // -----------------------------------------------------------------
+		// Optional (default is shown)
+		pathPrefix: '/',
+		// -----------------------------------------------------------------
 
-    // Pre-process *.md files with: (default: `liquid`)
-    markdownTemplateEngine: 'njk',
+		// Pre-process *.md files with: (default: `liquid`)
+		markdownTemplateEngine: 'njk',
 
-    // Pre-process *.html files with: (default: `liquid`)
-    htmlTemplateEngine: 'njk',
+		// Pre-process *.html files with: (default: `liquid`)
+		htmlTemplateEngine: 'njk',
 
-    // Opt-out of pre-processing global data JSON files: (default: `liquid`)
-    dataTemplateEngine: false,
+		// Opt-out of pre-processing global data JSON files: (default: `liquid`)
+		dataTemplateEngine: false,
 
-    // These are all optional (defaults are shown):
-    dir: {
-      input: '_src',
-      includes: '_includes',
-      data: '_data',
-      output: '_site'
-    }
-  }
+		// These are all optional (defaults are shown):
+		dir: {
+			input: '_src',
+			includes: '_includes',
+			data: '_data',
+			output: '_site'
+		}
+	}
 }