diff --git a/src/AMP.php b/src/AMP.php
index e852ade7..7d3d94f9 100644
--- a/src/AMP.php
+++ b/src/AMP.php
@@ -51,6 +51,8 @@ class AMP
     public $passes = [
         'Lullabot\AMP\Pass\PreliminaryPass', // Removes user blacklisted tags
         'Lullabot\AMP\Pass\ImgTagTransformPass',
+        'Lullabot\AMP\Pass\ImgurTransformPass',
+        'Lullabot\AMP\Pass\TumblrTransformPass',
         'Lullabot\AMP\Pass\IframeSoundCloudTagTransformPass',
         'Lullabot\AMP\Pass\IframeFacebookTagTransformPass',
         'Lullabot\AMP\Pass\AudioTagTransformPass',
diff --git a/src/Pass/ImgTagTransformPass.php b/src/Pass/ImgTagTransformPass.php
index 8e28efeb..74a00b97 100644
--- a/src/Pass/ImgTagTransformPass.php
+++ b/src/Pass/ImgTagTransformPass.php
@@ -175,6 +175,19 @@ protected function getImageWidthHeight($src)
 
         // Try obtaining image size without having to download the whole image
         $size = $this->fastimage->getImageSize($img_url);
+    
+        if (!$size) {
+            // Now try with downloading the whole image
+            list($width, $height) = @getimagesize($src);
+        
+            if ($width && $height) {
+                $size = [
+                    'width' => $width,
+                    'height' => $height,
+                ];
+            }
+        }
+        
         return $size;
     }
 
diff --git a/src/Pass/ImgurTransformPass.php b/src/Pass/ImgurTransformPass.php
new file mode 100644
index 00000000..58a3bffa
--- /dev/null
+++ b/src/Pass/ImgurTransformPass.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace Lullabot\AMP\Pass;
+
+use QueryPath\DOMQuery;
+
+use Lullabot\AMP\Utility\ActionTakenLine;
+use Lullabot\AMP\Utility\ActionTakenType;
+
+/**
+ * Class ImgurTransformPass
+ * @package Lullabot\AMP\Pass
+ */
+class ImgurTransformPass extends ImgTagTransformPass
+{
+    function pass()
+    {
+        $all_imgur = $this->q->top()->find('blockquote.imgur-embed-pub');
+        /** @var DOMQuery $el */
+        foreach ($all_imgur as $el) {
+            /** @var \DOMElement $dom_el */
+            $dom_el = $el->get(0);
+            $lineno = $this->getLineNo($dom_el);
+            $context_string = $this->getContextString($dom_el);
+            
+            /** @var \DOMElement $new_dom_el */
+            $imgur_id = $el->attr('data-id');
+            $img_src = 'https://i.imgur.com/' . $imgur_id . '.png';
+            $size = $this->getImageWidthHeight($img_src);
+            
+            if (!$size) {
+                $size['height'] = 400;
+                $size['width'] = 400;
+            }
+            
+            $amp_string =<<<"HTML"
+<amp-iframe 
+    height="{$size['height']}"
+    width="{$size['width']}"
+    layout="responsive"
+    frameborder="0"
+    sandbox="allow-scripts allow-same-origin"
+    src="https://imgur.com/$imgur_id/embed">
+    <amp-img layout="fill" src="$img_src" placeholder=''></amp-img>
+</amp-iframe>
+HTML;
+            
+            $el->after($amp_string);
+            $new_dom_el = $el->get(0);
+            
+            // Remove the blockquote, its children
+            $el->removeChildren()->remove();
+            $this->addActionTaken(new ActionTakenLine('blockquote.imgur', ActionTakenType::IMGUR_CONVERTED, $lineno, $context_string));
+            $this->context->addLineAssociation($new_dom_el, $lineno);
+        }
+        
+        return $this->transformations;
+    }
+}
diff --git a/src/Pass/TumblrTransformPass.php b/src/Pass/TumblrTransformPass.php
new file mode 100644
index 00000000..7419b88f
--- /dev/null
+++ b/src/Pass/TumblrTransformPass.php
@@ -0,0 +1,68 @@
+<?php
+namespace Lullabot\AMP\Pass;
+
+use QueryPath\DOMQuery;
+
+use Lullabot\AMP\Utility\ActionTakenLine;
+use Lullabot\AMP\Utility\ActionTakenType;
+
+/**
+ * Class TumblrTransformPass
+ * @package Lullabot\AMP\Pass
+ */
+class TumblrTransformPass extends BasePass
+{
+    function pass()
+    {
+        $all_tumblr = $this->q->top()->find('div.tumblr-post');
+        /** @var DOMQuery $el */
+        foreach ($all_tumblr as $el) {
+            /** @var \DOMElement $dom_el */
+            $dom_el = $el->get(0);
+            $lineno = $this->getLineNo($dom_el);
+            $context_string = $this->getContextString($dom_el);
+            $script_tag = $this->getScriptTag($el, '&(*UTF8)tumblr\.com/post\.js&i');
+            
+            $height = isset($this->options['tumblr_height'])
+                ? $this->options['tumblr_height'] : 360;
+            
+            $width = isset($this->options['tumblr_width'])
+                ? $this->options['tumblr_width'] : 414;
+            
+            $src = $el->attr('data-href');
+            
+            if ($src) {
+                $amp_string =<<<"HTML"
+<amp-iframe 
+    height="$height"
+    width="$width"
+    layout="responsive"
+    frameborder="0"
+    sandbox="allow-scripts allow-same-origin"
+    src="$src"></amp-iframe>
+HTML;
+                
+                $el->after($amp_string);
+                $new_dom_el = $el->get(0);
+                
+                if (!empty($script_tag)) {
+                    $script_tag->remove();
+                    $this->addActionTaken(new ActionTakenLine('a (with associated script tag)', ActionTakenType::TUMBLR_CONVERTED, $lineno, $context_string));
+                }
+                else {
+                    $this->addActionTaken(new ActionTakenLine('a', ActionTakenType::TUMBLR_CONVERTED, $lineno, $context_string));
+                }
+                    $this->context->addLineAssociation($new_dom_el, $lineno);
+            }
+            else {
+                $this->addActionTaken(new ActionTakenLine('div.tumblr-post', ActionTakenType::TUMBLR_COULD_NOT_BE_CONVERTED, $lineno, $context_string));
+            }
+            
+            // Remove the div, its children
+            $el->removeChildren()->remove();
+            
+        }
+        
+        return $this->transformations;
+    }
+}
diff --git a/src/Utility/ActionTakenType.php b/src/Utility/ActionTakenType.php
index 60b88025..2a244c46 100644
--- a/src/Utility/ActionTakenType.php
+++ b/src/Utility/ActionTakenType.php
@@ -27,6 +27,10 @@ class ActionTakenType
     const IMG_PIXEL_CONVERTED = 'tag was converted to the amp-pixel tag.';
     const IMG_ANIM_CONVERTED = 'tag was converted to the amp-anim tag.';
     const IMG_COULD_NOT_BE_CONVERTED = 'tag could NOT be converted to the amp-img tag as the image is not accessible.';
+    const IMGUR_CONVERTED = 'imgur tag was converted to the amp-iframe tag';
+    const IMGUR_COULD_NOT_BE_CONVERTED = 'imgur tag could NOT be converted to the amp-iframe tag';
+    const TUMBLR_CONVERTED = 'tumblr tag was converted to the amp-iframe tag';
+    const TUMBLR_COULD_NOT_BE_CONVERTED = 'tumblr tag could NOT be converted to the amp-iframe tag';
     const INSTAGRAM_CONVERTED = 'instagram embed code was converted to the amp-instagram tag.';
     const PINTEREST_CONVERTED = 'pinterest embed code was converted to the amp-pinterest tag.';
     const VINE_CONVERTED = 'vine embed code was converted to the amp-vine tag.';
diff --git a/tests/test-data/fragment-html/img-test-fragment.html b/tests/test-data/fragment-html/img-test-fragment.html
index 69554435..1cfb1262 100644
--- a/tests/test-data/fragment-html/img-test-fragment.html
+++ b/tests/test-data/fragment-html/img-test-fragment.html
@@ -26,3 +26,6 @@
 
 <!-- should transform to amp-img instead of amp-anim because of default option['use_amp_anim_tag'] = false -->
 <img src="https://upload.wikimedia.org/wikipedia/commons/b/bb/Quilt_design_as_46x46_uncompressed_GIF.gif">
+
+<!-- should transform to amp-img -->
+<blockquote class="imgur-embed-pub" lang="en" data-id="UY7mHHT"><a href="//imgur.com/UY7mHHT">Another victory - it fits!</a></blockquote>
diff --git a/tests/test-data/fragment-html/img-test-fragment.html.out b/tests/test-data/fragment-html/img-test-fragment.html.out
index 20a30bb1..204ba458 100644
--- a/tests/test-data/fragment-html/img-test-fragment.html.out
+++ b/tests/test-data/fragment-html/img-test-fragment.html.out
@@ -27,6 +27,11 @@
 <!-- should transform to amp-img instead of amp-anim because of default option['use_amp_anim_tag'] = false -->
 <amp-img src="https://upload.wikimedia.org/wikipedia/commons/b/bb/Quilt_design_as_46x46_uncompressed_GIF.gif" width="46" height="46" layout="fixed"></amp-img>
 
+<!-- should transform to amp-img -->
+<amp-iframe height="720" width="720" layout="responsive" frameborder="0" sandbox="allow-scripts allow-same-origin" src="https://imgur.com/UY7mHHT/embed">
+    <amp-img layout="fill" src="https://i.imgur.com/UY7mHHT.png" placeholder></amp-img>
+</amp-iframe>
+
 
 ORIGINAL HTML
 ---------------
@@ -59,6 +64,9 @@ Line 26:
 Line 27: <!-- should transform to amp-img instead of amp-anim because of default option['use_amp_anim_tag'] = false -->
 Line 28: <img src="https://upload.wikimedia.org/wikipedia/commons/b/bb/Quilt_design_as_46x46_uncompressed_GIF.gif">
 Line 29: 
+Line 30: <!-- should transform to amp-img -->
+Line 31: <blockquote class="imgur-embed-pub" lang="en" data-id="UY7mHHT"><a href="//imgur.com/UY7mHHT">Another victory - it fits!</a></blockquote>
+Line 32: 
 
 
 Transformations made from HTML tags to AMP custom tags
@@ -79,6 +87,9 @@ Transformations made from HTML tags to AMP custom tags
 <img src="https://upload.wikimedia.org/wikipedia/commons/b/bb/Quilt_design_as_46x46_uncompressed_GIF.gif"> at line 28
  ACTION TAKEN: img tag was converted to the amp-img tag.
 
+<blockquote class="imgur-embed-pub" lang="en" data-id="UY7mHHT"> at line 31
+ ACTION TAKEN: blockquote.imgur imgur tag was converted to the amp-iframe tag
+
 
 AMP-HTML Validation Issues and Fixes
 -------------------------------------
@@ -110,4 +121,5 @@ FAIL
 
 COMPONENT NAMES WITH JS PATH
 ------------------------------
-No custom amp script includes required
+'amp-iframe', include path 'https://cdn.ampproject.org/v0/amp-iframe-0.1.js'
+
diff --git a/tests/test-data/fragment-html/tumblr-fragment.html b/tests/test-data/fragment-html/tumblr-fragment.html
new file mode 100644
index 00000000..c88611f4
--- /dev/null
+++ b/tests/test-data/fragment-html/tumblr-fragment.html
@@ -0,0 +1,2 @@
+<div class="tumblr-post" data-href="https://embed.tumblr.com/embed/post/k33lX6gULMz1j_FK_w_a1g/145429050241" data-did="da39a3ee5e6b4b0d3255bfef95601890afd80709"><a href="http://potterlove975.tumblr.com/post/145429050241">http://potterlove975.tumblr.com/post/145429050241</a></div>
+<script async="" src="https://assets.tumblr.com/post.js"></script>
\ No newline at end of file
diff --git a/tests/test-data/fragment-html/tumblr-fragment.html.out b/tests/test-data/fragment-html/tumblr-fragment.html.out
new file mode 100644
index 00000000..002e693e
--- /dev/null
+++ b/tests/test-data/fragment-html/tumblr-fragment.html.out
@@ -0,0 +1,24 @@
+<amp-iframe height="360" width="414" layout="responsive" frameborder="0" sandbox="allow-scripts allow-same-origin" src="https://embed.tumblr.com/embed/post/k33lX6gULMz1j_FK_w_a1g/145429050241"></amp-iframe>
+
+
+ORIGINAL HTML
+---------------
+Line 1: <div class="tumblr-post" data-href="https://embed.tumblr.com/embed/post/k33lX6gULMz1j_FK_w_a1g/145429050241" data-did="da39a3ee5e6b4b0d3255bfef95601890afd80709"><a href="http://potterlove975.tumblr.com/post/145429050241">http://potterlove975.tumblr.com/post/145429050241</a></div>
+Line 2: <script async="" src="https://assets.tumblr.com/post.js"></script>
+
+
+Transformations made from HTML tags to AMP custom tags
+-------------------------------------------------------
+
+<div class="tumblr-post" data-href="https://embed.tumblr.com/embed/post/k33lX6gULMz1j_FK_w_a1g/145429050241" data-did="da39a3ee5e6b4b0d3255bfef95601890afd80709"> at line 1
+ ACTION TAKEN: a (with associated script tag) tumblr tag was converted to the amp-iframe tag
+
+
+AMP-HTML Validation Issues and Fixes
+-------------------------------------
+PASS
+
+COMPONENT NAMES WITH JS PATH
+------------------------------
+'amp-iframe', include path 'https://cdn.ampproject.org/v0/amp-iframe-0.1.js'
+