diff --git a/modules/imgfmt/HGImgFmt.cpp b/modules/imgfmt/HGImgFmt.cpp
index 2e00fd92..2e44a118 100644
--- a/modules/imgfmt/HGImgFmt.cpp
+++ b/modules/imgfmt/HGImgFmt.cpp
@@ -1109,7 +1109,7 @@ HGResult HGAPI HGImgFmt_LoadImageFromReader(HGImgFmtReader reader, HGUInt index,
 
 		if (ret == HGBASE_ERR_OK && NULL != image)
 		{
-            ret = HGImgFmt_LoadImageFromPdfReader((HGPdfReader)imgFmtReaderImpl->handle, index, 200.0f / 72.0f, 200.0f / 72.0f, imgType, imgOrigin, image);
+            ret = HGImgFmt_LoadImageFromPdfReader((HGPdfReader)imgFmtReaderImpl->handle, index, 300.0f / 72.0f, 300.0f / 72.0f, imgType, imgOrigin, image);
 		}
 
 		return ret;