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diff --git a/images/extensions/tonesynth_small.png b/images/extensions/tonesynth_small.png
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diff --git a/images/extensions/twitter-extension-sm.png b/images/extensions/twitter-extension-sm.png
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diff --git a/index.html b/index.html
index af71fb5..34c88dc 100644
--- a/index.html
+++ b/index.html
@@ -37,7 +37,7 @@
             <ul class="featured-extensions">
                 <li class="featured-extension">
                     <a href="?url=http://technoboy10.tk/twitter/examples/Fetch%20a%20Tweet.sbx" data-action="load-url">
-                        <img src="images/extensions/twitter_small.png" />
+                        <img src="images/extensions/twitter-extension-sm.png" />
                         <section>
                             <h2>Twitter</h2>
                             <p class="author">Connor Hudson and Kreg Hanning</p>
@@ -46,7 +46,7 @@
                 </li>
                 <li class="featured-extension">
                     <a href="?url=http://ericrosenbaum.github.io/tone-synth-extension/examples/Bouncing%20Synth%20Ball.sbx" data-action="load-url">
-                        <img src="images/extensions/tonesynth_small.png" />
+                        <img src="images/extensions/synth-extension-sm.png" />
                         <section>
                             <h2>Sound Synthesizer</h2>
                             <p class="author">Eric Rosenbaum</p>
@@ -55,7 +55,7 @@
                 </li>
                 <li class="featured-extension">
                     <a href="?url=http://scratchx.org/tmp/TalkingGobo.sbx" data-action="load-url">
-                        <img src="images/extensions/texttospeech_small.png" />
+                        <img src="images/extensions/text-extension-sm.png" />
                         <section>
                             <h2>Text to Speech</h2>
                             <p class="author">Sayamindu Dasgupta</p>
@@ -155,7 +155,7 @@
                                 <h2>Firebase Mesh</h2>
                                 <p class="author">Connor Hudson</p>
                             </header>
-                            <img src="images/extensions/mesh_small.png" />
+                            <img src="images/extensions/mesh-extension-sm.png" />
                         </a>
                         <section class="description">
                             <p>Broadcast messages to other projects!</p>
@@ -240,7 +240,7 @@
                                 <h2>Sound Synthesizer</h2>
                                 <p class="author">Eric Rosenbaum</p>
                             </header>
-                            <img src="images/extensions/tonesynth_small.png" />
+                            <img src="images/extensions/synth-extension-sm.png" />
                         </a>
                         <section class="description">
                             <p>Synthesize sound effects and music</p>
@@ -257,7 +257,7 @@
                                 <h2>Text to Speech</h2>
                                 <p class="author">Sayamindu Dasgupta</p>
                             </header>
-                            <img src="images/extensions/texttospeech_small.png" />
+                            <img src="images/extensions/text-extension-sm.png" />
                         </a>
                         <section class="description">
                             <p>Use Scratch to read text out loud</p>
@@ -274,7 +274,7 @@
                                 <h2>Twitter</h2>
                                 <p class="author">Connor Hudson, Kreg Hanning</p>
                             </header>
-                            <img src="images/extensions/twitter_small.png" />
+                            <img src="images/extensions/twitter-extension-sm.png" />
                         </a>
                         <section class="description">
                             <p>Use Twitter in your projects!</p>