diff --git a/examples b/examples
index 3273aa4..99f2e9c 160000
--- a/examples
+++ b/examples
@@ -1 +1 @@
-Subproject commit 3273aa4e4c1898c484e989340a8525edb343cebe
+Subproject commit 99f2e9c3d2fbab02b0582dc8dcf9ed05df7789a6
diff --git a/src/sshare/main.py b/src/sshare/main.py
index da4369b..f0744ec 100644
--- a/src/sshare/main.py
+++ b/src/sshare/main.py
@@ -40,6 +40,31 @@ def main():
     arguments, _ = arg_parser.parse_known_args()
     with open(arguments.config or config_directory.default_config(), mode="rb") as file:
         config = tomllib.load(file)
+
+    config["spec"] = config.get("spec",   {})
+    for spec_name, spec in config["spec"].items():
+        if spec_name != "default":
+            flags = []
+            if spec.get("flag", {}).get("short") != None:
+                flags = flags + [ f"-{spec["flag"]["short"]}" ]
+            if spec.get("flag", {}).get("long") != None:
+                flags = flags + [ f"--{spec["flag"]["long"]}" ]
+            arg_parser.add_argument(
+                *flags,
+                action="store_const",
+                const=True,
+                default=False,
+                help=spec.get(help, f"Use {spec_name} spec"),
+                dest=spec_name,
+            )
+
+    use_spec = config["spec"].get("default", {})
+    arguments, _ = arg_parser.parse_known_args()
+    for spec_name, spec in config["spec"].items():
+        if spec_name != "default":
+            if getattr(arguments, spec_name):
+                use_spec = spec
+
     config["config"] = config.get("config", {})
     config["flags" ] = config.get("flags",  {})
 
@@ -69,8 +94,9 @@ def main():
     logger.add(command_line)
     plugins = PluginManager(
         logger,
+        use_spec,
         config["config"],
-        config["flags"],
+        config["flags" ],
         arg_parser,
     )
     plugins.activate("logger")
diff --git a/src/sshare/plugin/plugin.py b/src/sshare/plugin/plugin.py
index 558f2c2..213db6d 100644
--- a/src/sshare/plugin/plugin.py
+++ b/src/sshare/plugin/plugin.py
@@ -35,8 +35,9 @@ class PluginLoader:
             in ([ "command_line" ] if command_line else []) + [
                 "file",
                 "stdin",
-                "current_time",
-                "append_type",
+                "preserve",
+                "time",
+                "extension",
                 "ssh",
                 "uri",
                 "print_location",
@@ -60,7 +61,7 @@ class PluginLoader:
         ]
 
 class PluginManager:
-    def __init__(self, logger, config, flags, arg_parser):
+    def __init__(self, logger, spec, config, flags, arg_parser):
         self._logger        = logger
         self._arg_parser    = arg_parser
 
@@ -71,14 +72,22 @@ class PluginManager:
         for type in Plugin.types():
             setattr(self, type, PluginState())
 
-        self._uninitialized = PluginLoader.all(
+        self._uninitialized = []
+        uninitialized = PluginLoader.all(
             command_line=False,
             logger=logger,
             config=config,
             flags=flags,
         )
-        for plugin in self._uninitialized:
+        for plugin in uninitialized:
             plugin.add_args(arg_parser)
+            if not "name" in plugin.plugin_type:
+                self._uninitialized.append(plugin)
+
+        for name in spec.get("name", []):
+            for plugin in uninitialized:
+                if plugin.name == name:
+                    self._uninitialized.append(plugin)
 
     def activate(self, activate_type=None):
         args = self._arg_parser.parse_args()
diff --git a/src/sshare/plugin/source.py b/src/sshare/plugin/source.py
index fcfc6a6..b2fede5 100644
--- a/src/sshare/plugin/source.py
+++ b/src/sshare/plugin/source.py
@@ -15,7 +15,8 @@
 from pathlib import Path
 
 class Raw:
-    def __init__(self, type, data):
+    def __init__(self, name, type, data):
+        self.name = name
         self.type = type
         self.data = data
 
diff --git a/src/sshare/plugins/append_type.py b/src/sshare/plugins/extension.py
similarity index 100%
rename from src/sshare/plugins/append_type.py
rename to src/sshare/plugins/extension.py
diff --git a/src/sshare/plugins/preserve.py b/src/sshare/plugins/preserve.py
new file mode 100644
index 0000000..d010cde
--- /dev/null
+++ b/src/sshare/plugins/preserve.py
@@ -0,0 +1,32 @@
+# This file is part of SSHare.
+#
+# SSHare is free software: you can redistribute it and/or modify it under the terms of
+# the GNU General Public License as published by the Free Software Foundation,
+# either version 3 of the License, or (at your option) any later version.
+#
+# SSHare is distributed in the hope that it will be useful, but WITHOUT ANY
+# WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# SSHare. If not, see <https://www.gnu.org/licenses/>.
+
+from sshare.plugin.source import File
+from sshare.plugin.source import Raw
+
+plugin_type = "name"
+
+def get_name(name, source):
+    if name != "":
+        name = name + "_"
+    else:
+        name = ""
+    if isinstance(source, File):
+        components = source.path.name.split(".")
+        if components[0] == "":
+            return name + "." + components[1]
+        else:
+            return name + components[0]
+    else:
+        return name + source.name
diff --git a/src/sshare/plugins/stdin.py b/src/sshare/plugins/stdin.py
index 7b219b6..7edccbe 100644
--- a/src/sshare/plugins/stdin.py
+++ b/src/sshare/plugins/stdin.py
@@ -28,4 +28,4 @@ args = {
 }
 
 def get_source():
-    return Raw(config.suffix, sys.stdin.buffer.read())
+    return Raw("stdin", config.suffix, sys.stdin.buffer.read())
diff --git a/src/sshare/plugins/current_time.py b/src/sshare/plugins/time.py
similarity index 80%
rename from src/sshare/plugins/current_time.py
rename to src/sshare/plugins/time.py
index 16cdd44..20f65d0 100644
--- a/src/sshare/plugins/current_time.py
+++ b/src/sshare/plugins/time.py
@@ -20,18 +20,12 @@ from sshare.plugin.source import File
 plugin_type = "name"
 
 config = {
-    "base": 62,
+    "format": 62,
 }
-
-def init():
-    if not isinstance(config.base, int):
-        logger.fatal("Error: 'base' must be an integer")
-    elif config.base < 2:
-        logger.fatal("Error: 'base' cannot be less than 2")
-    elif config.base > 62:
-        logger.fatal("Error: 'base' cannot be greater than 62")
-    
+   
 def get_name(name, source):
+    if name != "":
+        name = name + "_"
     return name + _rebase(config.base, time.time_ns())
 
 def _rebase(base, number):