diff --git a/src/dist/js/qrcode-style-tools.js b/src/dist/js/qrcode-style-tools.js
index 7efc934..39abe1f 100644
--- a/src/dist/js/qrcode-style-tools.js
+++ b/src/dist/js/qrcode-style-tools.js
@@ -95,9 +95,18 @@
         });
 
         document.querySelectorAll('#foreground, #background').forEach(function (input) {
-            input.addEventListener('change', function () {
-                updateStylePreview(scopeOf(input));
-            });
+            // bootstrap-colorpicker sets the value and fires 'change' via jQuery's
+            // synthetic .trigger(), which a native addEventListener never sees - so the
+            // preview only updates via jQuery's event binding, not the native one below.
+            if (window.jQuery) {
+                jQuery(input).on('change', function () {
+                    updateStylePreview(scopeOf(input));
+                });
+            } else {
+                input.addEventListener('change', function () {
+                    updateStylePreview(scopeOf(input));
+                });
+            }
         });
 
         document.querySelectorAll('select[name="level"]').forEach(function (select) {
diff --git a/src/forms/qrcode_options.php b/src/forms/qrcode_options.php
index 7f1507e..7c69790 100644
--- a/src/forms/qrcode_options.php
+++ b/src/forms/qrcode_options.php
@@ -58,7 +58,7 @@ if (QRCODE_GENERATOR === "internal-chillerlan.qrcode") {
     <div class="col-sm-12 mb-2">
         <div class="row">
             <div class="col-6 col-md-3">
-                <label>&nbsp;</label>
+                <label>Randomize</label>
                 <button type="button" id="random_style_btn" class="btn btn-outline-secondary btn-block">
                     <i class="fa fa-dice"></i> Random style
                 </button>
diff --git a/src/index.php b/src/index.php
index 50dcbe9..da61637 100644
--- a/src/index.php
+++ b/src/index.php
@@ -120,29 +120,33 @@ foreach ($createdQrcode_static as $row) {
                                 </div><!-- /.col -->
                                     
                                 <div class="col-12 col-sm-6 col-md-3">
-                                    <div class="info-box mb-3 bg-success">
-                                        <span class="info-box-icon"><i class="fa fa-qrcode"></i></span>
+                                    <a href="dynamic_qrcodes.php" class="d-block">
+                                        <div class="info-box mb-3 bg-success">
+                                            <span class="info-box-icon"><i class="fa fa-qrcode"></i></span>
 
-                                        <div class="info-box-content">
-                                            <span class="info-box-text">Dynamic Qr codes</span>
-                                            <span class="info-box-number"><?php echo $numQrcode_dynamic; ?></span>
-                                        </div><!-- /.info-box-content -->
-                                    </div>
+                                            <div class="info-box-content">
+                                                <span class="info-box-text">Dynamic Qr codes</span>
+                                                <span class="info-box-number"><?php echo $numQrcode_dynamic; ?></span>
+                                            </div><!-- /.info-box-content -->
+                                        </div>
+                                    </a>
                                 </div><!-- /.col -->
 
                                 <!-- fix for small devices only -->
                                 <div class="clearfix hidden-md-up"></div>
 
                                 <div class="col-12 col-sm-6 col-md-3">
-                                    <div class="info-box mb-3 bg-danger">
-                                        <span class="info-box-icon"><i class="fa fa-qrcode"></i></span>
+                                    <a href="static_qrcodes.php" class="d-block">
+                                        <div class="info-box mb-3 bg-danger">
+                                            <span class="info-box-icon"><i class="fa fa-qrcode"></i></span>
 
-                                        <div class="info-box-content">
-                                            <span class="info-box-text">Static QR codes</span>
-                                            <span class="info-box-number"><?php echo $numQrcode_static; ?></span>
-                                        </div><!-- /.info-box-content -->
+                                            <div class="info-box-content">
+                                                <span class="info-box-text">Static QR codes</span>
+                                                <span class="info-box-number"><?php echo $numQrcode_static; ?></span>
+                                            </div><!-- /.info-box-content -->
 
-                                    </div>
+                                        </div>
+                                    </a>
                                 </div><!-- /.col -->
                                 
                                 <div class="col-12 col-sm-6 col-md-3">
diff --git a/src/lib/Qrcode/Qrcode-intchil.php b/src/lib/Qrcode/Qrcode-intchil.php
index dfd942a..9b0d62b 100644
--- a/src/lib/Qrcode/Qrcode-intchil.php
+++ b/src/lib/Qrcode/Qrcode-intchil.php
@@ -174,7 +174,7 @@ class Qrcode {
         $iconWidth = imagesx($icon);
         $iconHeight = imagesy($icon);
 
-        $maxIconHeight = (int) ($height * 0.25);
+        $maxIconHeight = (int) ($height * 0.625);
         $scale = min($maxIconHeight / $iconHeight, ($width * 0.6) / $iconWidth, 1);
         $targetWidth = max(1, (int) ($iconWidth * $scale));
         $targetHeight = max(1, (int) ($iconHeight * $scale));
diff --git a/src/lib/Qrcode/Qrcode.php b/src/lib/Qrcode/Qrcode.php
index b338414..d49e447 100644
--- a/src/lib/Qrcode/Qrcode.php
+++ b/src/lib/Qrcode/Qrcode.php
@@ -159,7 +159,7 @@ class Qrcode {
         $iconWidth = imagesx($icon);
         $iconHeight = imagesy($icon);
 
-        $maxIconHeight = (int) ($height * 0.25);
+        $maxIconHeight = (int) ($height * 0.625);
         $scale = min($maxIconHeight / $iconHeight, ($width * 0.6) / $iconWidth, 1);
         $targetWidth = max(1, (int) ($iconWidth * $scale));
         $targetHeight = max(1, (int) ($iconHeight * $scale));