diff --git a/conf/app_d.ini b/conf/app_d.ini
index 1952951..19c0923 100644
--- a/conf/app_d.ini
+++ b/conf/app_d.ini
@@ -14,4 +14,9 @@ path=./data/metadata.db
 [file]
 inputdir=./input
 storedir=./data/file
-tmpdir=./data/tmp
\ No newline at end of file
+tmpdir=./data/tmp
+
+[img]
+encode=jpg
+miniSize=400
+fullSize=1000
\ No newline at end of file
diff --git a/file.py b/file.py
index ef3eff1..6df224e 100644
--- a/file.py
+++ b/file.py
@@ -79,7 +79,7 @@ def thumbnail(input, minSize: int = 600, encode:str="webp"):
         img = cv2.resize(img, newshape)
     if encode == "webp":
         success, encoded_image = cv2.imencode(".webp", img, [cv2.IMWRITE_WEBP_QUALITY, 75])
-    elif encode == "jpg":
+    elif encode == "jpg" or "jpeg":
         success, encoded_image = cv2.imencode(".jpg", img, [cv2.IMWRITE_JPEG_QUALITY, 75])
     else:
         return input
diff --git a/web/api_Img.py b/web/api_Img.py
index 6453c05..3911aec 100644
--- a/web/api_Img.py
+++ b/web/api_Img.py
@@ -1,9 +1,13 @@
 from flask import *
 from flask import Blueprint
-import db.file , file, gc
+import db.file , file, gc , app_conf
 
 api_Img_bp = Blueprint("api_Img_bp", __name__)
 
+conf = app_conf.conf()
+imgencode = conf.get("img", "encode")
+miniSize = conf.getint("img", "miniSize")
+fullSize = conf.getint("img", "fullSize")
 
 @api_Img_bp.route("/api/img/<bookid>/<index>")
 def img(bookid, index):  # 图片接口
@@ -16,12 +20,12 @@ def img(bookid, index):  # 图片接口
     if isinstance(data, str):
         abort(404)
     if request.args.get("mini") == "yes":
-        data = file.thumbnail(data,encode="jpg")
+        data = file.thumbnail(data,miniSize,encode=imgencode)
     else:
-        data = file.thumbnail(data,1500)
+        data = file.thumbnail(data,fullSize,encode=imgencode)
     response = make_response(data)  # 读取文件
     del data
-    response.headers.set("Content-Type", "image/Webp")
+    response.headers.set("Content-Type",f"image/{imgencode}")
     response.headers.set("Content-Disposition", "inline", filename=filename)
     gc.collect()
     return response