diff --git a/src/hooks/web/useWatermark.ts b/src/hooks/web/useWatermark.ts
index 4a31359..07cd09c 100644
--- a/src/hooks/web/useWatermark.ts
+++ b/src/hooks/web/useWatermark.ts
@@ -15,14 +15,14 @@ export function useWatermark(appendEl: HTMLElement | null = document.body) {
     clear()
 
     const can = document.createElement('canvas')
-    can.width = 300
+    can.width = 500
     can.height = 240
 
     const cans = can.getContext('2d')
     if (cans) {
       cans.rotate((-20 * Math.PI) / 120)
       cans.font = '15px Vedana'
-      cans.fillStyle = 'rgba(0, 0, 0, 0.15)'
+      cans.fillStyle = 'rgba(0, 0, 0, 0.05)'
       cans.textAlign = 'left'
       cans.textBaseline = 'middle'
       cans.fillText(str, can.width / 20, can.height)