diff --git a/apps/Info.html b/apps/Info.html
index 97aa0cd8b..2edcd52cd 100644
--- a/apps/Info.html
+++ b/apps/Info.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 
 <head>
 	<meta name="keywords" content="camicroscope, quip" />
diff --git a/apps/heatmap/heatmap.html b/apps/heatmap/heatmap.html
index 1047da64b..43dd0ae1c 100644
--- a/apps/heatmap/heatmap.html
+++ b/apps/heatmap/heatmap.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 
 <head>
 	<meta name="keywords" content="camicroscope, quip" />
diff --git a/apps/labeling/labeling.html b/apps/labeling/labeling.html
index 1e8298122..55a3ba597 100644
--- a/apps/labeling/labeling.html
+++ b/apps/labeling/labeling.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 
 <head>
 	<meta name="keywords" content="camicroscope, quip" />
diff --git a/apps/model/model.html b/apps/model/model.html
index c8c541785..a30c33b65 100644
--- a/apps/model/model.html
+++ b/apps/model/model.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 
 <head>
   <meta name="keywords" content="camicroscope, quip"/>
diff --git a/apps/multi/multi.html b/apps/multi/multi.html
index 70c27e734..36420e8ff 100644
--- a/apps/multi/multi.html
+++ b/apps/multi/multi.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 <head>
   <script type="text/javascript" src="../../core/openseadragon/openseadragon.js"></script>
   <script src="../../core/Store.js"></script>
diff --git a/apps/port/export.html b/apps/port/export.html
index a1251944b..cda842b7f 100644
--- a/apps/port/export.html
+++ b/apps/port/export.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 <head>
   <script src="../../core/Store.js"></script>
   <title>Export Results [caMicroscope]</title>
diff --git a/apps/port/import.html b/apps/port/import.html
index 91ca4cc93..3b69ffd0a 100644
--- a/apps/port/import.html
+++ b/apps/port/import.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 
 <head>
   <script src="../../core/Store.js"></script>
diff --git a/apps/redir.html b/apps/redir.html
index f0f5b9d5b..3c121d4da 100644
--- a/apps/redir.html
+++ b/apps/redir.html
@@ -1,4 +1,4 @@
-<html>
+<html  lang="en">
 <script src='../common/util.js'></script>
 <script src='../core/Store.js'></script>
 <script src='../common/PathdbMods.js'></script>
diff --git a/apps/segment/segment.html b/apps/segment/segment.html
index d151c635c..b6debc055 100644
--- a/apps/segment/segment.html
+++ b/apps/segment/segment.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 
 <head>
   <meta name="keywords" content="camicroscope, quip"/>
diff --git a/apps/signup/signup.html b/apps/signup/signup.html
index a593574cb..727b2df6a 100644
--- a/apps/signup/signup.html
+++ b/apps/signup/signup.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
 
   <head>
     <meta name="keywords" content="camicroscope, quip" />
diff --git a/apps/table.html b/apps/table.html
index 9138e1d81..f0608fe13 100644
--- a/apps/table.html
+++ b/apps/table.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
 
 <head>
 	<meta name="keywords" content="camicroscope, quip" />
diff --git a/apps/viewer/viewer.html b/apps/viewer/viewer.html
index 522ab8cd5..72b3fa822 100644
--- a/apps/viewer/viewer.html
+++ b/apps/viewer/viewer.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html>
+<html  lang="en">
   <head>
     <meta name="keywords" content="camicroscope, quip" />
     <meta charset="utf-8" />
diff --git a/index.html b/index.html
index 3d29d9f3e..f0de0d86a 100644
--- a/index.html
+++ b/index.html
@@ -1,3 +1,3 @@
-<html>
+<html  lang="en">
     <meta http-equiv="refresh" content="0; URL='apps/landing/landing.html'" />
 </html>
