diff --git a/aqt/helper.py b/aqt/helper.py
index b3c40b6..bd524c6 100644
--- a/aqt/helper.py
+++ b/aqt/helper.py
@@ -34,6 +34,7 @@ from typing import Callable, Dict, Generator, List, Optional, Tuple
 from urllib.parse import urlparse
 from xml.etree.ElementTree import Element
 
+import humanize
 import requests
 import requests.adapters
 from defusedxml import ElementTree
@@ -290,7 +291,13 @@ def xml_to_modules(
         name = packageupdate.find("Name").text
         packages[name] = {}
         for child in packageupdate:
-            packages[name][child.tag] = child.text
+            if child.tag == "UpdateFile":
+                for attr in "CompressedSize", "UncompressedSize":
+                    if attr not in child.attrib:
+                        continue
+                    packages[name][attr] = humanize.naturalsize(child.attrib[attr], gnu=True)
+            else:
+                packages[name][child.tag] = child.text
     return packages
 
 
diff --git a/aqt/installer.py b/aqt/installer.py
index 3690582..3af3ab5 100644
--- a/aqt/installer.py
+++ b/aqt/installer.py
@@ -493,9 +493,11 @@ class Cli:
         if args.target not in ArchiveId.TARGETS_FOR_HOST[args.host]:
             raise CliInputError("'{0.target}' is not a valid target for host '{0.host}'".format(args))
         if args.modules:
-            modules_ver, modules_query = args.modules[0], tuple(args.modules)
+            modules_ver, modules_query, is_long = args.modules[0], tuple(args.modules), False
+        elif args.long_modules:
+            modules_ver, modules_query, is_long = args.long_modules[0], tuple(args.long_modules), True
         else:
-            modules_ver, modules_query = None, None
+            modules_ver, modules_query, is_long = None, None, False
 
         for version_str in (modules_ver, args.extensions, args.arch, args.archives[0] if args.archives else None):
             Cli._validate_version_str(version_str, allow_latest=True, allow_empty=True)
@@ -517,6 +519,7 @@ class Cli:
             spec=spec,
             is_latest_version=args.latest_version,
             modules_query=modules_query,
+            is_long_listing=is_long,
             extensions_ver=args.extensions,
             architectures_ver=args.arch,
             archives_query=args.archives,
@@ -736,6 +739,16 @@ class Cli:
             'Second arg: an architecture, which may be printed with the "--arch" flag. '
             "When set, this prints all the modules available for either Qt 5.X.Y or the latest version of Qt.",
         )
+        output_modifier_exclusive_group.add_argument(
+            "--long-modules",
+            type=str,
+            nargs=2,
+            metavar=("(VERSION | latest)", "ARCHITECTURE"),
+            help='First arg: Qt version in the format of "5.X.Y", or the keyword "latest". '
+            'Second arg: an architecture, which may be printed with the "--arch" flag. '
+            "When set, this prints a table that describes all the modules available "
+            "for either Qt 5.X.Y or the latest version of Qt.",
+        )
         output_modifier_exclusive_group.add_argument(
             "--extensions",
             type=str,
diff --git a/aqt/metadata.py b/aqt/metadata.py
index a314641..9aa3000 100644
--- a/aqt/metadata.py
+++ b/aqt/metadata.py
@@ -448,9 +448,14 @@ class MetadataFactory:
             self.request_type = "latest version"
             self._action = lambda: Versions(self.fetch_latest_version())
         elif modules_query:
-            self.request_type = "modules"
-            version, arch = modules_query
-            self._action = lambda: self.fetch_modules(self._to_version(version), arch)
+            if is_long_listing:
+                self.request_type = "long modules"
+                version, arch = modules_query
+                self._action = lambda: self.fetch_long_modules(self._to_version(version), arch)
+            else:
+                self.request_type = "modules"
+                version, arch = modules_query
+                self._action = lambda: self.fetch_modules(self._to_version(version), arch)
         elif extensions_ver:
             self.request_type = "extensions"
             self._action = lambda: self.fetch_extensions(self._to_version(extensions_ver))
@@ -731,6 +736,30 @@ class MetadataFactory:
                 modules.add(module)
         return sorted(modules)
 
+    def fetch_long_modules(self, version: Version, arch: str) -> ModuleData:
+        """Returns long listing of modules"""
+        self.validate_extension(version)
+        qt_ver_str = self._get_qt_version_str(version)
+        # Example: re.compile(r"^(preview\.)?qt\.(qt5\.)?590(\.addons)?\.(?P<module>[^.]+)\.gcc_64$")
+        pattern = re.compile(
+            r"^(preview\.)?qt\.(qt"
+            + str(version.major)
+            + r"\.)?"
+            + qt_ver_str
+            + r"(\.addons)?\.(?P<module>[^.]+)\."
+            + arch
+            + r"$"
+        )
+
+        def matches_arch(element: Element) -> bool:
+            name_node = element.find("Name")
+            return bool(name_node is not None) and bool(pattern.match(str(name_node.text)))
+
+        modules_meta = self._fetch_module_metadata(self.archive_id.to_folder(qt_ver_str), matches_arch)
+        m = {pattern.match(key).group("module"): value for key, value in modules_meta.items()}
+
+        return ModuleData(m)
+
     def fetch_modules_sde(self, cmd_type: str, version: Version) -> List[str]:
         """Returns list of modules for src/doc/examples"""
         assert (
diff --git a/pyproject.toml b/pyproject.toml
index 90cf12b..763d040 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,14 +23,15 @@ classifiers = [
 ]
 requires-python = ">=3.6"
 dependencies = [
-    "requests",
-    "semantic_version",
-    "patch>=1.16",
-    "py7zr>=0.18.3",
-    "texttable",
     "bs4",
     "dataclasses;python_version<'3.7'",
     "defusedxml",
+    "humanize",
+    "patch>=1.16",
+    "py7zr>=0.18.3",
+    "requests",
+    "semantic_version",
+    "texttable",
 ]
 dynamic = ["version", "entry-points"]