diff --git a/pyproject.toml b/pyproject.toml
index c640ec0..823e188 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "rda_python_dsarch"
-version = "2.0.15"
+version = "2.0.16"
 authors = [
   { name="Zaihua Ji", email="zji@ucar.edu" },
 ]
diff --git a/src/rda_python_dsarch/dsarch.py b/src/rda_python_dsarch/dsarch.py
index 8055d2c..eeed2e4 100644
--- a/src/rda_python_dsarch/dsarch.py
+++ b/src/rda_python_dsarch/dsarch.py
@@ -2645,7 +2645,7 @@ def set_one_webfile(self, i, pgrec, file, flds, type, info=None, ndsid=None, sac
       if 'RO' in self.params and 'DO' in self.params:
          self.params['DO'][i] = self.get_next_disp_order(dsid, gindex)
       record = self.build_record(flds, pgrec, tname, i)
-      if pgrec and (pgrec['status'] == 'D' or self.PGOPT['ACTS']&self.OPTS['AW'][0]):
+      if pgrec and (pgrec['status'] == 'D' or 'WS' in self.params or self.PGOPT['ACTS']&self.OPTS['AW'][0]):
          record['uid'] = self.PGOPT['UID']
          if not (info and info['date_modified']):
             info = self.check_local_file(self.get_web_path(i, file, 1, type),
diff --git a/src/rda_python_dsarch/dsarch.usg b/src/rda_python_dsarch/dsarch.usg
index ca35c84..b800d3f 100644
--- a/src/rda_python_dsarch/dsarch.usg
+++ b/src/rda_python_dsarch/dsarch.usg
@@ -866,6 +866,8 @@ d260001-G2: DS-552780725 DC-522 WC-522 SS-465789806 SC-51
                       processing, used with -GX (-GatherXML)
   -(SC|SetChecksum) - computes MD5 checksums for files on the GDEX
                       Server and saves them to GDEXDB
+ -(WS|WithFileSize) - gathers file size information for Web files on the GDEX
+                      Server and saves them to GDEXDB
 
   Web file names must be provided via -WF (-WebFile) unless -ON
   (-OrderNames) is used to reorder files. The number of values supplied
@@ -1878,6 +1880,10 @@ behavior.
   (-GetDataset), the counts are calculated on the fly and included
   in the output.
 
+  -WS or -WithFileSize, rechecks Web file sizes and timestamps for
+  provided web files with -WF (-WebFile), and updates them into GDEXDB
+  This Mode option works with action -SW (SetWebFile) only.
+
   -XC or -CrossCopy, used with -AW or -AS to fill gaps in storage:
   copies files from Glade disk to bOreas (or vice versa) wherever
   copies are missing.
diff --git a/src/rda_python_dsarch/pg_arch.py b/src/rda_python_dsarch/pg_arch.py
index 7fec63d..ac4f2ea 100644
--- a/src/rda_python_dsarch/pg_arch.py
+++ b/src/rda_python_dsarch/pg_arch.py
@@ -126,6 +126,7 @@ def __init__(self):
          'WC' : [0, 'WithChecksum',  0],
          'WM' : [0, 'WithMetadata',  3],
          'WN' : [0, 'WithFileNumber',3],
+         'WS' : [0, 'WithFileSize',  3],
          'XC' : [0, 'CrossCopy',     1],
          'XM' : [0, 'CrossMove',     1],
          'ZD' : [0, 'ZipData',       3],