diff --git a/src/Svg/Document.php b/src/Svg/Document.php
index 27c9944..e5c2c24 100644
--- a/src/Svg/Document.php
+++ b/src/Svg/Document.php
@@ -204,7 +204,7 @@ protected function before($attributes)
     {
         $surface = $this->getSurface();
 
-        $style = new DefaultStyle();
+        $style = new DefaultStyle($this);
         $style->inherit($this);
         $style->fromAttributes($attributes);
 
diff --git a/src/Svg/Style.php b/src/Svg/Style.php
index 3ce70a5..1f07154 100644
--- a/src/Svg/Style.php
+++ b/src/Svg/Style.php
@@ -18,6 +18,7 @@ class Style
     const TYPE_ANGLE = 4;
     const TYPE_NUMBER = 5;
 
+    private $_document;
     private $_parentStyle;
 
     public $color;
@@ -43,6 +44,12 @@ class Style
     public $fontStyle = 'normal';
     public $textAnchor = 'start';
 
+    public function __construct($document = null) {
+        if ($document !== null) {
+            $this->_document = $document;
+        }
+    }
+
     protected function getStyleMap()
     {
         return array(
@@ -139,16 +146,6 @@ public function fromStyleSheets(AbstractTag $tag, $attributes) {
                         break;
                     }
                 }
-
-                if (
-                    \array_key_exists("font-family", $styles)
-                    && (
-                        \strtolower(\substr($this->href, 0, 7)) === "phar://"
-                        || ($this->document->allowExternalReferences === false && \strtolower(\substr($this->href, 0, 5)) !== "data:")
-                    )
-                ) {
-                    unset($style["font-family"]);
-                }
             }
         }
 
@@ -185,6 +182,16 @@ protected function fillStyles($styles)
                         $value = $styles[$from];
                 }
 
+                if ($from === "font-family") {
+                    $scheme = \strtolower(parse_url($value, PHP_URL_SCHEME) ?: "");
+                    if (
+                        $scheme === "phar" || \strtolower(\substr($value, 0, 7)) === "phar://"
+                        || ($this->_document !== null && $this->_document->allowExternalReferences === false && $scheme !== "data")
+                    ) {
+                        continue;
+                    }
+                }
+
                 if ($value !== null) {
                     $this->$to = $value;
                 }
diff --git a/src/Svg/Tag/AbstractTag.php b/src/Svg/Tag/AbstractTag.php
index 9d4e0c1..027db2a 100644
--- a/src/Svg/Tag/AbstractTag.php
+++ b/src/Svg/Tag/AbstractTag.php
@@ -119,7 +119,7 @@ public function getStyle()
      * @return Style
      */
     protected function makeStyle($attributes) {
-        $style = new Style();
+        $style = new Style($this->document);
         $style->inherit($this);
         $style->fromStyleSheets($this, $attributes);
         $style->fromAttributes($attributes);
diff --git a/src/Svg/Tag/Image.php b/src/Svg/Tag/Image.php
index 8cbfccd..de397c4 100644
--- a/src/Svg/Tag/Image.php
+++ b/src/Svg/Tag/Image.php
@@ -58,7 +58,11 @@ public function start($attributes)
 
         $this->document->getSurface()->transform(1, 0, 0, -1, 0, $height);
 
-        if (\strtolower(\substr($this->href, 0, 7)) === "phar://" || ($this->document->allowExternalReferences === false && \strtolower(\substr($this->href, 0, 5) !== "data:"))) {
+        $scheme = \strtolower(parse_url($this->href, PHP_URL_SCHEME) ?: "");
+        if (
+            $scheme === "phar" || \strtolower(\substr($this->href, 0, 7)) === "phar://"
+            || ($this->document->allowExternalReferences === false && $scheme !== "data")
+        ) {
             return;
         }