diff --git a/assets/webui/index.html b/assets/webui/index.html
index cdeb186..72fd02c 100644
--- a/assets/webui/index.html
+++ b/assets/webui/index.html
@@ -24,7 +24,7 @@
 			<div class="tool-group">
 				<button id="prevButton" class="icon-button" type="button" title="上一页" disabled>&lsaquo;</button>
 				<label class="page-control">
-					<input id="pageInput" type="number" min="1" value="1" disabled>
+					<input id="pageInput" type="number" min="1" value="0" disabled>
 					<span>/</span>
 					<span id="pageTotal">0</span>
 				</label>
diff --git a/assets/webui/ofdgo.js b/assets/webui/ofdgo.js
index 9b9a07b..f653338 100644
--- a/assets/webui/ofdgo.js
+++ b/assets/webui/ofdgo.js
@@ -2515,7 +2515,7 @@ function updateControls() {
 	el.nextButton.disabled = !hasDoc || state.pageIndex >= pageCount - 1;
 	el.pageInput.disabled = !hasDoc;
 	el.pageInput.max = String(pageCount || 1);
-	el.pageInput.value = String(hasDoc ? state.pageIndex + 1 : 1);
+	el.pageInput.value = String(hasDoc ? state.pageIndex + 1 : 0);
 	el.zoomOutButton.disabled = !hasDoc || state.scale <= 0.2;
 	el.zoomInButton.disabled = !hasDoc || state.scale >= 4;
 	el.fitButton.disabled = !hasDoc;