diff --git a/docs/features/Obsidian compatibility.md b/docs/features/Obsidian compatibility.md
index 61fcc060d..d519e1779 100644
--- a/docs/features/Obsidian compatibility.md	
+++ b/docs/features/Obsidian compatibility.md	
@@ -26,6 +26,7 @@ Finally, Quartz also provides `Plugin.CrawlLinks` which allows you to customize
     - `mermaid`: whether to enable [[Mermaid diagrams]]. Defaults to `true`
     - `parseTags`: whether to try and parse tags in the content body. Defaults to `true`
     - `enableInHtmlEmbed`: whether to try and parse Obsidian flavoured markdown in raw HTML. Defaults to `false`
+    - `enableYouTubeEmbed`: whether to enable embedded YouTube videos using external image Markdown syntax. Defaults to `false`
 - Link resolution behaviour:
   - Disabling: remove all instances of `Plugin.CrawlLinks()` from `quartz.config.ts`
   - Changing link resolution preference: set `markdownLinkResolution` to one of `absolute`, `relative` or `shortest`
diff --git a/quartz/components/styles/explorer.scss b/quartz/components/styles/explorer.scss
index ff046a665..304fd4500 100644
--- a/quartz/components/styles/explorer.scss
+++ b/quartz/components/styles/explorer.scss
@@ -126,7 +126,7 @@ svg {
   backface-visibility: visible;
 }
 
-div:has(> .folder-outer:not(.open)) > .folder-container > svg {
+li:has(> .folder-outer:not(.open)) > .folder-container > svg {
   transform: rotate(-90deg);
 }
 
diff --git a/quartz/plugins/filters/explicit.ts b/quartz/plugins/filters/explicit.ts
index 30f0b37fa..48f92bdf2 100644
--- a/quartz/plugins/filters/explicit.ts
+++ b/quartz/plugins/filters/explicit.ts
@@ -3,7 +3,11 @@ import { QuartzFilterPlugin } from "../types"
 export const ExplicitPublish: QuartzFilterPlugin = () => ({
   name: "ExplicitPublish",
   shouldPublish(_ctx, [_tree, vfile]) {
-    const publishFlag: boolean = vfile.data?.frontmatter?.publish ?? false
+    const publishProperty = vfile.data?.frontmatter?.publish ?? false
+    const publishFlag =
+      typeof publishProperty === "string"
+        ? publishProperty.toLowerCase() === "true"
+        : Boolean(publishProperty)
     return publishFlag
   },
 })
diff --git a/quartz/plugins/transformers/lastmod.ts b/quartz/plugins/transformers/lastmod.ts
index feca4b52f..6e12616f7 100644
--- a/quartz/plugins/transformers/lastmod.ts
+++ b/quartz/plugins/transformers/lastmod.ts
@@ -57,10 +57,22 @@ export const CreatedModifiedDate: QuartzTransformerPlugin<Partial<Options> | und
                 published ||= file.data.frontmatter.publishDate
               } else if (source === "git") {
                 if (!repo) {
-                  repo = new Repository(file.cwd)
+                  // Get a reference to the main git repo.
+                  // It's either the same as the workdir,
+                  // or 1+ level higher in case of a submodule/subtree setup
+                  repo = Repository.discover(file.cwd)
                 }
 
-                modified ||= await repo.getFileLatestModifiedDateAsync(file.data.filePath!)
+                try {
+                  modified ||= await repo.getFileLatestModifiedDateAsync(file.data.filePath!)
+                } catch {
+                  console.log(
+                    chalk.yellow(
+                      `\nWarning: ${file.data
+                        .filePath!} isn't yet tracked by git, last modification date is not available for this file`,
+                    ),
+                  )
+                }
               }
             }
 
diff --git a/quartz/plugins/transformers/ofm.ts b/quartz/plugins/transformers/ofm.ts
index 5aa09c5bb..be3344aa4 100644
--- a/quartz/plugins/transformers/ofm.ts
+++ b/quartz/plugins/transformers/ofm.ts
@@ -25,6 +25,7 @@ export interface Options {
   parseTags: boolean
   parseBlockReferences: boolean
   enableInHtmlEmbed: boolean
+  enableYouTubeEmbed: boolean
 }
 
 const defaultOptions: Options = {
@@ -36,6 +37,7 @@ const defaultOptions: Options = {
   parseTags: true,
   parseBlockReferences: true,
   enableInHtmlEmbed: false,
+  enableYouTubeEmbed: false,
 }
 
 const icons = {
@@ -127,6 +129,7 @@ const calloutLineRegex = new RegExp(/^> *\[\!\w+\][+-]?.*$/, "gm")
 // (?:\/[-_\p{L}\d\p{Z}]+)*)   -> non-capturing group, matches an arbitrary number of tag strings separated by "/"
 const tagRegex = new RegExp(/(?:^| )#((?:[-_\p{L}\p{Emoji}\d])+(?:\/[-_\p{L}\p{Emoji}\d]+)*)/, "gu")
 const blockReferenceRegex = new RegExp(/\^([A-Za-z0-9]+)$/, "g")
+const ytLinkRegex = /^.*(youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/
 
 export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options> | undefined> = (
   userOpts,
@@ -201,7 +204,7 @@ export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options>
                 if (value.startsWith("!")) {
                   const ext: string = path.extname(fp).toLowerCase()
                   const url = slugifyFilePath(fp as FilePath)
-                  if ([".png", ".jpg", ".jpeg", ".gif", ".bmp", ".svg"].includes(ext)) {
+                  if ([".png", ".jpg", ".jpeg", ".gif", ".bmp", ".svg", ".webp"].includes(ext)) {
                     const dims = alias ?? ""
                     let [width, height] = dims.split("x", 2)
                     width ||= "auto"
@@ -505,6 +508,30 @@ export const ObsidianFlavoredMarkdown: QuartzTransformerPlugin<Partial<Options>
         })
       }
 
+      if (opts.enableYouTubeEmbed) {
+        plugins.push(() => {
+          return (tree: HtmlRoot) => {
+            visit(tree, "element", (node) => {
+              if (node.tagName === "img" && typeof node.properties.src === "string") {
+                const match = node.properties.src.match(ytLinkRegex)
+                const videoId = match && match[2].length == 11 ? match[2] : null
+                if (videoId) {
+                  node.tagName = "iframe"
+                  node.properties = {
+                    class: "external-embed",
+                    allow: "fullscreen",
+                    frameborder: 0,
+                    width: "600px",
+                    height: "350px",
+                    src: `https://www.youtube.com/embed/${videoId}`,
+                  }
+                }
+              }
+            })
+          }
+        })
+      }
+
       return plugins
     },
     externalResources() {