diff --git a/README.md b/README.md
index b860eb9..c96638c 100644
--- a/README.md
+++ b/README.md
@@ -55,11 +55,11 @@ server {
 
 https://picbed.saintic.com
 
-测试账号：demo
+测试账号：test
 
 测试密码：123456
 
-对外服务，允许匿名上传，但是目前上传的图片保留删除权利！
+对外服务(请勿修改密码)，允许匿名上传，但是目前上传的图片保留删除权利！
 
 ## 扩展钩子
 
diff --git a/src/utils/tool.py b/src/utils/tool.py
index f0f871d..b8e45b4 100644
--- a/src/utils/tool.py
+++ b/src/utils/tool.py
@@ -24,6 +24,7 @@
 comma_pat = compile(r"\s*,\s*")
 verticaline_pat = compile(r"\s*\|\s*")
 username_pat = compile(r'^[a-zA-Z][0-9a-zA-Z\_]{0,31}$')
+point_pat = compile(r'^\w{1,9}\.?\w{1,9}$')
 
 
 def rsp(*args):
@@ -124,6 +125,17 @@ def generate_random(length=6):
     return ''.join(myslice)
 
 
+def format_upload_src(fmt, value):
+    if fmt and isinstance(fmt, string_types):
+        if point_pat.match(fmt):
+            if "." in fmt:
+                fmts = fmt.split('.')
+                return {fmts[0]: {fmts[1]: value}}
+            else:
+                return {fmt: value}
+    return dict(src=value)
+
+
 class Attribution(dict):
 
     def __getattr__(self, name):
diff --git a/src/views/api.py b/src/views/api.py
index 69b49c1..9f06e28 100644
--- a/src/views/api.py
+++ b/src/views/api.py
@@ -22,7 +22,7 @@
 from utils.tool import allowed_file, parse_valid_comma, is_true, logger, sha1,\
     parse_valid_verticaline, get_today, gen_rnd_filename, hmac_sha256, \
     rsp, get_current_timestamp, ListEqualSplit, sha256, generate_random, \
-    err_logger
+    err_logger, format_upload_src
 from utils.web import dfr, admin_apilogin_required, apilogin_required, \
     set_site_config, check_username
 from utils._compat import iteritems
@@ -599,6 +599,7 @@ def callback(result):
             )
             return res
         #: 存储数据
+        defaultSrc = data[0]["src"]
         pipe = g.rc.pipeline()
         pipe.sadd(rsp("index", "global"), sha)
         if g.signin and g.userinfo.username:
@@ -610,7 +611,7 @@ def callback(result):
             user=g.userinfo.username if g.signin else 'anonymous',
             ctime=get_current_timestamp(),
             status='enabled',  # disabled, deleted
-            src=data[0]["src"],
+            src=defaultSrc,
             sender=data[0]["sender"],
             senders=json.dumps(data)
         ))
@@ -623,10 +624,13 @@ def callback(result):
             res.update(
                 code=0,
                 filename=filename,
-                src=data[0]["src"],
                 sender=data[0]["sender"],
                 api=url_for("api.shamgr", sha=sha, _external=True),
             )
+            #: format指定图片地址的显示字段，默认src，可以用点号指定
+            #: 比如data.src，那么返回格式{code, filename..., data:{src}, ...}
+            fmt = request.form.get("format", request.args.get("format"))
+            res.update(format_upload_src(fmt, defaultSrc))
     else:
         res.update(msg="No file or image format allowed")
     return res