diff --git a/README.md b/README.md
index b9bf481..57d549e 100644
--- a/README.md
+++ b/README.md
@@ -23,13 +23,26 @@ docker run -d --name pdftoolbox --restart=always -p 8082:8082 -v /data/pdftoolbo
 
 启动成功后，在浏览器中访问 http://ip:8082，如下图所示
 
-![pdf在线压缩首页](./images/index.jpg)
+![pdf工具箱首页](./images/index.jpg)
 
-点击【点击此处上传】按钮，选择要转换的文件，即可上传。目前支持三种压缩质量
+
+选择上方的【pdf压缩】，然后点击【点击此处上传】按钮，选择要转换的文件，即可上传并压缩。目前支持三种压缩质量
  - 高质量 (300dpi)
  - 中质量 (150dpi)
  - 低质量 (72dpi)
 
+如下图所示
+
+![压缩pdf](./images/compress.jpg)
+
+选择上方的【pdf压缩】，然后点击【点击此处上传】按钮，选择要转换的文件，即可上传并进行OCR文字提取。目前导出格式为txt。此过程会比较慢，请耐心等待。等待完毕后即可下载。
+
+![OCR文字提取](./images/ocr.jpg)
+
+识别结果如下图所示：
+
+![OCR文字提取结果](./images/ocr_result.jpg)
+
 ### 在Linux上部署
 
 请参考Dockerfile文件
diff --git a/gsbin.go b/gsbin.go
index 2b3fe7a..f6df7f9 100644
--- a/gsbin.go
+++ b/gsbin.go
@@ -63,7 +63,11 @@ func (w *CommandWriter) Write(p []byte) (n int, err error) {
 			w.progress(float32(w.handlePage)/float32(w.totalPage), Compressing, "")
 		} else if strings.Contains(line, "error") && w.state != Error {
 			reason := line[strings.Index(line, "error")+6:]
-			w.progress(100, Error, reason)
+			w.progress(1, Error, reason)
+			w.state = Error
+		} else if strings.Contains(line, "Error") && w.state != Error {
+			reason := line[strings.Index(line, "Error")+6:]
+			w.progress(1, Error, reason)
 			w.state = Error
 		}
 	}
diff --git a/images/compress.jpg b/images/compress.jpg
new file mode 100644
index 0000000..e992585
Binary files /dev/null and b/images/compress.jpg differ
diff --git a/images/index.jpg b/images/index.jpg
index 36786af..1113d00 100644
Binary files a/images/index.jpg and b/images/index.jpg differ
diff --git a/images/ocr.jpg b/images/ocr.jpg
new file mode 100644
index 0000000..8b44fd1
Binary files /dev/null and b/images/ocr.jpg differ
diff --git a/images/ocr_result.jpg b/images/ocr_result.jpg
new file mode 100644
index 0000000..59ab8d8
Binary files /dev/null and b/images/ocr_result.jpg differ
diff --git a/static/upload.css b/static/upload.css
index d9c1af3..25e0f73 100644
--- a/static/upload.css
+++ b/static/upload.css
@@ -208,7 +208,7 @@ img {
 }
 
 .progress-bar {
-  height: 3px;
+  height: 5px;
   background-color: #409EFF;
 }