diff --git a/layouts/shortcodes/audio.html b/layouts/shortcodes/audio.html
index 4f6f863..9878ca6 100644
--- a/layouts/shortcodes/audio.html
+++ b/layouts/shortcodes/audio.html
@@ -1,6 +1,39 @@
-<figure {{ with .Get "class" }}class="{{ . }}"{{ end }}>
-<audio controls preload="{{ .Get "preload" | default "metadata" }}">
-{{ with .Get "src" }}<source src="{{ . | relURL }}" type="audio/mpeg">{{ end }}
+{{ $caption := .Get "caption" -}}
+{{ $class := .Get "class" -}}
+{{ $preload := .Get "preload" | default "metadata" -}}
+{{ $src := .Get "src" -}}
+
+{{ $resource := false -}}
+{{ $static := false -}}
+{{ $type := false -}}
+
+{{ if and $src (fileExists (path.Join "/static" $src)) -}}
+  {{ $static = true -}}
+  {{ $src = relURL $src -}}
+{{ else if $src -}}
+  {{ $src = strings.TrimLeft "/" $src -}}
+  {{ with resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+  {{ with .Page.Resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+{{ end -}}
+
+{{ if $resource -}}
+  {{ $src = $resource.RelPermalink -}}
+  {{ $type = $resource.MediaType }}
+{{ end -}}
+
+{{ if not $src -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" is missing the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ else if not (or $static $resource) -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" has an error in the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ end -}}
+
+<figure class="audio{{ with $class }} {{ . }}{{ end }}">
+<audio controls preload="{{ $preload }}">
+<source src="{{ $src }}" {{ with $type }}type="{{ . }}"{{ end }}>
 </audio>
-{{ with .Get "caption" }}<figcaption>{{ . }}</figcaption>{{ end }}
+{{ with $caption }}<figcaption>{{ . | markdownify }}</figcaption>{{ end }}
 </figure>
diff --git a/layouts/shortcodes/figure.html b/layouts/shortcodes/figure.html
index 372bd6c..9c2be30 100644
--- a/layouts/shortcodes/figure.html
+++ b/layouts/shortcodes/figure.html
@@ -8,38 +8,54 @@
 {{ $size := .Get "size" -}}
 {{ $src := .Get "src" -}}
 {{ $srcset := .Get "srcset" -}}
-{{ $srcsetw := (slice) }}
 {{ $title := .Get "title" -}}
 {{ $width := .Get "width" -}}
+
 {{ $maxwidth := site.Params.imageMaxWidth -}}
 {{ $realwidth := 0 -}}
 {{ $realheight := 0 -}}
-{{ if and $src (fileExists (path.Join "/assets" $src)) -}}
-  {{ $original := resources.Get $src -}}
+{{ $resource := false -}}
+{{ $srcsetw := (slice) }}
+{{ $static := false -}}
+
+{{ if and $src (fileExists (path.Join "/static" $src)) -}}
+  {{ with (imageConfig (path.Join "/static" $src)) -}}
+    {{ $realwidth = .Width -}}
+    {{ $realheight = .Height -}}
+  {{ end -}}
+  {{ $static = true -}}
+  {{ $src = relURL $src -}}
+{{ else if $src -}}
+  {{ $src = strings.TrimLeft "/" $src -}}
+  {{ with resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+  {{ with .Page.Resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+{{ end -}}
+
+{{ if $resource -}}
   {{ if $size -}}
-    {{ $image := $original.Resize $size -}}
+    {{ $image := $resource.Resize $size -}}
     {{ $src = $image.RelPermalink -}}
     {{ $width = $image.Width -}}
     {{ $height = $image.Height -}}
   {{ else -}}
-    {{ $src = $original.RelPermalink -}}
-    {{ $realwidth = $original.Width -}}
-    {{ $realheight = $original.Height -}}
+    {{ $src = $resource.RelPermalink -}}
+    {{ $realwidth = $resource.Width -}}
+    {{ $realheight = $resource.Height -}}
   {{ end -}}
   {{ if $srcset -}}
     {{ range $set := split $srcset " " -}}
-      {{ $image := $original.Resize (printf "%sx" $set) -}}
+      {{ $image := $resource.Resize (printf "%sx" $set) -}}
       {{ $srcsetw = $srcsetw | append (printf "%s %sw" $image.RelPermalink $set) }}
     {{ end }}
     {{ $width = "" -}}
     {{ $height = "" -}}
   {{ end -}}
-{{ else if and $src (fileExists (path.Join "/static" $src)) -}}
-  {{ with (imageConfig (path.Join "/static" $src)) -}}
-    {{ $realwidth = .Width -}}
-    {{ $realheight = .Height -}}
-  {{ end -}}
 {{ end -}}
+
 {{ if and $width $height -}}
     {{ $width = int $width -}}
     {{ $height = int $height -}}
@@ -62,6 +78,13 @@
   {{ $height = (mul ($realheight) (div (add ($width) 0.0) ($realwidth))) -}}
   {{ $height = (math.Round $height) -}}
 {{ end -}}
+
+{{ if not $src -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" is missing the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ else if not (or $static $resource) -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" has an error in the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ end -}}
+
 <figure class="image{{ with $class }} {{ . }}{{ end }}">
 {{ with $link }}<a href="{{ . }}">{{ end -}}
 <img src="{{ $src }}"{{ with $srcsetw }} srcset="{{ delimit  .  ", " }}"{{ end }}{{ with $alt }} alt="{{ . }}"{{ end }}{{ with $width }} width="{{ . }}"{{ end }}{{ with $height }} height="{{ . }}"{{ end }}>
diff --git a/layouts/shortcodes/file.html b/layouts/shortcodes/file.html
index 44402fa..c8d7e57 100644
--- a/layouts/shortcodes/file.html
+++ b/layouts/shortcodes/file.html
@@ -2,11 +2,35 @@
 {{ $newtab := .Get "newtab" | default false -}}
 {{ $src := .Get "src" -}}
 {{ $text := .Get "text" -}}
-{{ if and $src (fileExists (path.Join "/assets" $src)) -}}
-  {{ $original := resources.Get $src -}}
-  {{ $src = $original.RelPermalink -}}
+
+{{ $resource := false -}}
+{{ $static := false -}}
+
+{{ if and $src (fileExists (path.Join "/static" $src)) -}}
+  {{ $static = true -}}
+  {{ $src = relURL $src -}}
+{{ else if $src -}}
+  {{ $src = strings.TrimLeft "/" $src -}}
+  {{ with resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+  {{ with .Page.Resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
 {{ end -}}
+
+{{ if $resource -}}
+  {{ $src = $resource.RelPermalink -}}
+{{ end -}}
+
 {{ if not $text -}}
   {{ $text = path.Base $src -}}
 {{ end -}}
+
+{{ if not $src -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" is missing the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ else if not (or $static $resource) -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" has an error in the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ end -}}
+
 <a class="file{{ with $class }} {{ . }}{{ end }}" href="{{ $src }}"{{ if $newtab }} target="_blank" rel="noopener noreferrer"{{ end }}>{{ $text }}</a>
diff --git a/layouts/shortcodes/img.html b/layouts/shortcodes/img.html
index 546d6f8..c972159 100644
--- a/layouts/shortcodes/img.html
+++ b/layouts/shortcodes/img.html
@@ -5,37 +5,53 @@
 {{ $size := .Get "size" -}}
 {{ $src := .Get "src" -}}
 {{ $srcset := .Get "srcset" -}}
-{{ $srcsetw := (slice) }}
 {{ $width := .Get "width" -}}
+
 {{ $maxwidth := site.Params.imageMaxWidth -}}
 {{ $realwidth := 0 -}}
 {{ $realheight := 0 -}}
-{{ if and $src (fileExists (path.Join "/assets" $src)) -}}
-  {{ $original := resources.Get $src -}}
+{{ $resource := false -}}
+{{ $srcsetw := (slice) }}
+{{ $static := false -}}
+
+{{ if and $src (fileExists (path.Join "/static" $src)) -}}
+  {{ with (imageConfig (path.Join "/static" $src)) -}}
+    {{ $realwidth = .Width -}}
+    {{ $realheight = .Height -}}
+  {{ end -}}
+  {{ $static = true -}}
+  {{ $src = relURL $src -}}
+{{ else if $src -}}
+  {{ $src = strings.TrimLeft "/" $src -}}
+  {{ with resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+  {{ with .Page.Resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+{{ end -}}
+
+{{ if $resource -}}
   {{ if $size -}}
-    {{ $image := $original.Resize $size -}}
+    {{ $image := $resource.Resize $size -}}
     {{ $src = $image.RelPermalink -}}
     {{ $width = $image.Width -}}
     {{ $height = $image.Height -}}
   {{ else -}}
-    {{ $src = $original.RelPermalink -}}
-    {{ $realwidth = $original.Width -}}
-    {{ $realheight = $original.Height -}}
+    {{ $src = $resource.RelPermalink -}}
+    {{ $realwidth = $resource.Width -}}
+    {{ $realheight = $resource.Height -}}
   {{ end -}}
   {{ if $srcset -}}
     {{ range $set := split $srcset " " -}}
-      {{ $image := $original.Resize (printf "%sx" $set) -}}
+      {{ $image := $resource.Resize (printf "%sx" $set) -}}
       {{ $srcsetw = $srcsetw | append (printf "%s %sw" $image.RelPermalink $set) }}
     {{ end }}
     {{ $width = "" -}}
     {{ $height = "" -}}
   {{ end -}}
-{{ else if and $src (fileExists (path.Join "/static" $src)) -}}
-  {{ with (imageConfig (path.Join "/static" $src)) -}}
-    {{ $realwidth = .Width -}}
-    {{ $realheight = .Height -}}
-  {{ end -}}
 {{ end -}}
+
 {{ if and $width $height -}}
     {{ $width = int $width -}}
     {{ $height = int $height -}}
@@ -58,6 +74,13 @@
   {{ $height = (mul ($realheight) (div (add ($width) 0.0) ($realwidth))) -}}
   {{ $height = (math.Round $height) -}}
 {{ end -}}
+
+{{ if not $src -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" is missing the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ else if not (or $static $resource) -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" has an error in the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ end -}}
+
 {{ with $link }}<a class="image-link" href="{{ . }}">{{ end -}}
 <img class="image{{ with $class }} {{ . }}{{ end }}" src="{{ $src }}"{{ with $srcsetw }} srcset="{{ delimit  .  ", " }}"{{ end }}{{ with $alt }} alt="{{ . }}"{{ end }}{{ with $width }} width="{{ . }}"{{ end }}{{ with $height }} height="{{ . }}"{{ end }}>
 {{- if $link }}</a>{{ end }}
diff --git a/layouts/shortcodes/svg.html b/layouts/shortcodes/svg.html
index a32c21d..c2e7f96 100644
--- a/layouts/shortcodes/svg.html
+++ b/layouts/shortcodes/svg.html
@@ -6,16 +6,34 @@
 {{ $link := .Get "link" -}}
 {{ $src := .Get "src" -}}
 {{ $width := .Get "width" -}}
-{{ if and $src (fileExists (path.Join "/assets" $src)) -}}
-  {{ $original := resources.Get $src -}}
-  {{ if $inline -}}
-    {{ $src = $original.Content -}}
-  {{ else -}}
-    {{ $src = $original.RelPermalink -}}
+
+{{ $resource := false -}}
+{{ $static := false -}}
+
+{{ if and $src (fileExists (path.Join "/static" $src)) -}}
+  {{ $static = true -}}
+  {{ $src = relURL $src -}}
+  {{ if $inline }}
+    {{ $src = readFile (path.Join "/static" $src) -}}
+  {{ end -}}
+{{ else if $src -}}
+  {{ $src = strings.TrimLeft "/" $src -}}
+  {{ with resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+  {{ with .Page.Resources.Get $src -}}
+    {{ $resource = . -}}
   {{ end -}}
-{{ else if and $src $inline (fileExists (path.Join "/static" $src)) -}}
-  {{ $src =  readFile (path.Join "/static" $src) -}}
 {{ end -}}
+
+{{ if $resource -}}
+  {{ if $inline -}}
+    {{ $src = $resource.Content -}}
+  {{ else -}}
+    {{ $src = $resource.RelPermalink -}}
+  {{ end -}}
+{{ end -}}
+
 {{ if and $width $height -}}
     {{ $width = int $width -}}
     {{ $height = int $height -}}
@@ -24,6 +42,13 @@
 {{ else if $height -}}
   {{ $height = int $height -}}
 {{ end -}}
+
+{{ if not $src -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" is missing the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ else if not (or $static $resource) -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" has an error in the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ end -}}
+
 {{ if $caption }}<figure class="image image--svg{{ with $class }} {{ . }}{{ end }}">{{ end -}}
 {{ with $link }}<a class="image-link" href="{{ . }}">{{ end -}}
 {{ if $inline -}}
diff --git a/layouts/shortcodes/video.html b/layouts/shortcodes/video.html
index 9ae5982..b54083e 100644
--- a/layouts/shortcodes/video.html
+++ b/layouts/shortcodes/video.html
@@ -1,6 +1,65 @@
-<figure {{ with .Get "class" }}class="{{ . }}"{{ end }}>
-<video controls preload="{{ .Get "preload" | default "metadata" }}" {{ with .Get "width" }}width="{{ . }}"{{ end }} {{ with .Get "autoplay" }}autoplay="{{ . }}"{{ end }} {{ with .Get "loop" }}loop="{{ . }}"{{ end }}>
-{{ with .Get "src" }}<source src="{{ . | relURL }}" type="video/mp4">{{ end }}
+{{ $autoplay := .Get "autoplay" -}}
+{{ $caption := .Get "caption" -}}
+{{ $class := .Get "class" -}}
+{{ $loop := .Get "loop" -}}
+{{ $poster := .Get "poster" -}}
+{{ $preload := .Get "preload" | default "metadata" -}}
+{{ $src := .Get "src" -}}
+{{ $width := .Get "width" -}}
+
+{{ $posterres := false -}}
+{{ $resource := false -}}
+{{ $static := false -}}
+{{ $type := false -}}
+
+{{ if and $src (fileExists (path.Join "/static" $src)) -}}
+  {{ $static = true -}}
+  {{ $src = relURL $src -}}
+{{ else if $src -}}
+  {{ $src = strings.TrimLeft "/" $src -}}
+  {{ with resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+  {{ with .Page.Resources.Get $src -}}
+    {{ $resource = . -}}
+  {{ end -}}
+{{ end -}}
+
+{{ if $resource -}}
+  {{ $src = $resource.RelPermalink -}}
+  {{ $type = $resource.MediaType }}
+{{ end -}}
+
+{{ if and $poster (fileExists (path.Join "/static" $poster)) -}}
+  {{ $poster = relURL $poster -}}
+{{ else if $poster -}}
+  {{ $poster = strings.TrimLeft "/" $poster -}}
+  {{ with resources.Get $poster -}}
+    {{ $posterres = . -}}
+  {{ end -}}
+  {{ with .Page.Resources.Get $poster -}}
+    {{ $posterres = . -}}
+  {{ end -}}
+{{ end -}}
+
+{{ if $posterres -}}
+  {{ if $width -}}
+    {{ $image := $posterres.Resize (printf "%sx" $width) -}}
+    {{ $poster = $image.RelPermalink -}}
+  {{ else -}}
+    {{ $poster = $posterres.RelPermalink -}}
+  {{ end -}}
+{{ end -}}
+
+{{ if not $src -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" is missing the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ else if not (or $static $resource) -}}
+{{ warnf "%s shortcode number %d in \"content/%s\" has an error in the \"src\" attribute." .Name .Ordinal .Page.File.Path -}}
+{{ end -}}
+
+<figure class="video{{ with $class }} {{ . }}{{ end }}">
+<video controls preload="{{ $preload }}" {{ with $width }}width="{{ . }}"{{ end }} {{ with $poster }}poster="{{ . }}"{{ end }} {{ with $autoplay }}autoplay="{{ . }}"{{ end }} {{ with $loop }}loop="{{ . }}"{{ end }}>
+<source src="{{ $src }}" {{ with $type }}type="{{ . }}"{{ end }}>
 </video>
-{{ with .Get "caption" }}<figcaption>{{ . }}</figcaption>{{ end }}
+{{ with $caption }}<figcaption>{{ . | markdownify }}</figcaption>{{ end }}
 </figure>