diff --git a/imgboard.php b/imgboard.php
index 94ae2fd..e0257be 100644
--- a/imgboard.php
+++ b/imgboard.php
@@ -126,7 +126,7 @@ if (isset($_POST['message']) || isset($_POST['file'])) {
 			
 			$post['image_width'] = $file_info[0]; $post['image_height'] = $file_info[1];
 			
-			list($thumb_maxwidth, $thumb_maxheight) = thumbnailDimensions($post['image_width'], $post['image_height']);
+			list($thumb_maxwidth, $thumb_maxheight) = thumbnailDimensions($post);
 			
 			if (!createThumbnail($file_location, $thumb_location, $thumb_maxwidth, $thumb_maxheight)) {
 				fancyDie("Could not create thumbnail.");
diff --git a/inc/defines.php b/inc/defines.php
index 3478041..12c99af 100644
--- a/inc/defines.php
+++ b/inc/defines.php
@@ -8,4 +8,6 @@ define('TINYIB_RESPAGE', true);
 // The following are provided for backward compatibility and should not be relied upon
 // Copy new settings from settings.default.php to settings.php
 if (!defined('TINYIB_MAXREPLIES')) { define('TINYIB_MAXREPLIES', 0); }
+if (!defined('TINYIB_MAXWOP')) { define('TINYIB_MAXWOP', TINYIB_MAXW); }
+if (!defined('TINYIB_MAXHOP')) { define('TINYIB_MAXHOP', TINYIB_MAXH); }
 ?>
\ No newline at end of file
diff --git a/inc/functions.php b/inc/functions.php
index 02b0c1d..f0cb8f8 100644
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -282,8 +282,15 @@ function checkDuplicateImage($hex) {
 	}
 }
 
-function thumbnailDimensions($width, $height) {
-	return ($width > TINYIB_MAXW || $height > TINYIB_MAXH) ? array(TINYIB_MAXW, TINYIB_MAXH) : array($width, $height);
+function thumbnailDimensions($post) {
+	if ($post['parent'] == TINYIB_NEWTHREAD) {
+		$max_width = TINYIB_MAXWOP;
+		$max_height = TINYIB_MAXHOP;
+	} else {
+		$max_width = TINYIB_MAXW;
+		$max_height = TINYIB_MAXH;
+	}
+	return ($post['image_width'] > $max_width || $post['image_height'] > $max_height) ? array($max_width, $max_height) : array($post['image_width'], $post['image_height']);
 }
 
 function createThumbnail($name, $filename, $new_w, $new_h) {
diff --git a/inc/html.php b/inc/html.php
index 1e6f512..ce946e6 100644
--- a/inc/html.php
+++ b/inc/html.php
@@ -121,7 +121,10 @@ EOF;
 
 function buildPage($htmlposts, $parent, $pages=0, $thispage=0) {
 	$managelink = basename($_SERVER['PHP_SELF']) . "?manage";
-	$maxdimensions = TINYIB_MAXW . 'x' . TINYIB_MAXH;
+	$maxdimensions = TINYIB_MAXWOP . 'x' . TINYIB_MAXHOP;
+	if (TINYIB_MAXW != TINYIB_MAXWOP || TINYIB_MAXH != TINYIB_MAXHOP) {
+		$maxdimensions .= ' (new thread) or ' . TINYIB_MAXW . 'x' . TINYIB_MAXH . ' (reply)';
+	}
 	$maxfilesize = TINYIB_MAXKB * 1024;
 	
 	$postingmode = "";
@@ -239,9 +242,9 @@ EOF;
 					<tr>
 						<td colspan="2" class="rules">
 							<ul>
-								<li>Supported file types are: GIF, JPG, PNG</li>
+								<li>Supported file types are GIF, JPG, and PNG.</li>
 								$max_file_size_html
-								<li>Images greater than $maxdimensions pixels will be thumbnailed.</li>
+								<li>Images greater than $maxdimensions will be thumbnailed.</li>
 								$unique_posts_html
 							</ul>
 						</td>
diff --git a/settings.default.php b/settings.default.php
index 89791a1..f7ed792 100644
--- a/settings.default.php
+++ b/settings.default.php
@@ -8,8 +8,10 @@ define('TINYIB_PREVIEWREPLIES', 3); // Amount of replies previewed on index page
 define('TINYIB_MAXREPLIES', 0); // Maximum replies before a thread stops bumping  [0 to disable]
 define('TINYIB_MAXKB', 2048); // Maximum file size in kilobytes  [0 to disable]
 define('TINYIB_MAXKBDESC', "2 MB"); // Human-readable representation of the maximum file size
-define('TINYIB_MAXW', 250); // Maximum image width
-define('TINYIB_MAXH', 250); // Maximum image height - Images exceeding these sizes will be thumbnailed
+define('TINYIB_MAXW', 250); // Maximum image width (reply) - Images exceeding these sizes will be thumbnailed
+define('TINYIB_MAXH', 250); // Maximum image height (reply)
+define('TINYIB_MAXWOP', 250); // Maximum image width (new thread)
+define('TINYIB_MAXHOP', 250); // Maximum image height (new thread)
 define('TINYIB_DELAY', 30); // Delay between posts to help control flooding  [0 to disable]
 define('TINYIB_LOGO', ""); // Logo HTML
 define('TINYIB_TRIPSEED', ""); // Enter some random text - Used when generating secure tripcodes - Must not change once set