diff --git a/index.html b/index.html
index ddffd6e..f4cf017 100644
--- a/index.html
+++ b/index.html
@@ -3,6 +3,7 @@
   <head>
     <link href="bootstrap-5.0.2-dist/css/bootstrap.min.css" rel="stylesheet" ></link>
     <script src="bootstrap-5.0.2-dist/js/bootstrap.bundle.min.js" ></script>
+    <meta charset="utf-8">
   <head>
   <body>
     <div class="container">
diff --git a/sample_intake.html b/sample_intake.html
index 94a814a..ce66a9d 100644
--- a/sample_intake.html
+++ b/sample_intake.html
@@ -6,6 +6,7 @@
     <script src="bootstrap-5.0.2-dist/js/bootstrap.bundle.min.js" ></script>
     <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"></script>
     <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"</link>
+    <meta charset="utf-8">
     <style>
       #map {
         height: 30em;
diff --git a/sample_prep_protocol.html b/sample_prep_protocol.html
index 0b33a61..55d521f 100644
--- a/sample_prep_protocol.html
+++ b/sample_prep_protocol.html
@@ -3,6 +3,7 @@
   <header>
     <link href="bootstrap-5.0.2-dist/css/bootstrap.min.css" rel="stylesheet" ></link>
     <script src="bootstrap-5.0.2-dist/js/bootstrap.bundle.min.js" ></script>
+    <meta charset="utf-8">
   </header>
 
   <body>
diff --git a/setup_microscope.html b/setup_microscope.html
index 319f8aa..4c072da 100644
--- a/setup_microscope.html
+++ b/setup_microscope.html
@@ -4,7 +4,7 @@
   <header>
     <link href="bootstrap-5.0.2-dist/css/bootstrap.min.css" rel="stylesheet" ></link>
     <script src="bootstrap-5.0.2-dist/js/bootstrap.bundle.min.js" ></script>
-
+    <meta charset="utf-8">
     <style>
     #output{
       position: relative;
