diff --git a/source/index.html.haml b/source/index.html.haml
index 9598274..0711d6f 100644
--- a/source/index.html.haml
+++ b/source/index.html.haml
@@ -5,7 +5,7 @@ h1: CSS with superpowers
 
 
 .hero-lockup
-  %p.hero-image= image_tag "illustrations/glasses.svg", height: "160"
+  %p.hero-image= image_tag "illustrations/glasses.svg", height: "160", alt: "Glasses"
   %p.introduction
     Sass is the most mature, stable, and powerful professional grade CSS
     extension language in the world.
diff --git a/source/install.html.haml b/source/install.html.haml
index 05d251f..a3778fd 100644
--- a/source/install.html.haml
+++ b/source/install.html.haml
@@ -6,7 +6,7 @@ title: Install Sass
 %ol.list-columns
   %li.gui-application
     %h3 Applications
-    %p= image_tag "illustrations/mouse.svg", class: "header-image", height: "160"
+    %p= image_tag "illustrations/mouse.svg", class: "header-image", height: "160", alt: "Mouse"
     %p
       There are a good many applications that will get you up and running
       with Sass in a few minutes for Mac, Windows, and Linux. You can download
@@ -58,7 +58,7 @@ title: Install Sass
 
   %li.command-line-unix
     %h3 Command Line
-    %p= image_tag "illustrations/keyboard.svg", class: "header-image", height: "160"
+    %p= image_tag "illustrations/keyboard.svg", class: "header-image", height: "160", alt: "Keyboard"
     %dl#install-ruby-linux
       %dt Linux
       %dd
diff --git a/source/styleguide/brand.html.haml b/source/styleguide/brand.html.haml
index 0911d87..14649db 100644
--- a/source/styleguide/brand.html.haml
+++ b/source/styleguide/brand.html.haml
@@ -54,17 +54,17 @@ title: Brand Guidelines
 .logos
   %h3 Standard
   %ul.list-columns
-    %li= image_tag "styleguide/color.png", height: "80"
-    %li= image_tag "styleguide/seal-color.png", height: "80"
+    %li= image_tag "styleguide/color.png", height: "80", alt: "Sass"
+    %li= image_tag "styleguide/seal-color.png", height: "80", alt: "Sass"
 
   %h3 White
   %ul.list-tiled.swatch-color-background-shade
-    %li= image_tag "styleguide/white.png", height: "80"
-    %li= image_tag "styleguide/seal-color-reversed.png", height: "80"
-    %li= image_tag "styleguide/seal-black-reversed.png", height: "80"
+    %li= image_tag "styleguide/white.png", height: "80", alt: "Sass"
+    %li= image_tag "styleguide/seal-color-reversed.png", height: "80", alt: "Sass"
+    %li= image_tag "styleguide/seal-black-reversed.png", height: "80", alt: "Sass"
 
   %h3 Black
   %ul.list-columns
-    %li= image_tag "styleguide/black.png", height: "80"
-    %li= image_tag "styleguide/seal-black.png", height: "80"
+    %li= image_tag "styleguide/black.png", height: "80", alt: "Sass"
+    %li= image_tag "styleguide/seal-black.png", height: "80", alt: "Sass"