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diff --git a/share/extensions/synfig_fileformat.py b/share/extensions/synfig_fileformat.py
new file mode 100755
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+++ b/share/extensions/synfig_fileformat.py
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+#!/usr/bin/env python
+"""
+synfig_fileformat.py
+Synfig file format utilities
+
+Copyright (C) 2011 Nikita Kitaev
+
+This program 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 2 of the License, or
+(at your option) any later version.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+"""
+
+###### Constants ##########################################
+kux = 60.0 # Number of SVG units (pixels) per Synfig "unit"
+gamma = 2.2
+tangent_scale = 3.0 # Synfig tangents are scaled by a factor of 3
+
+
+
+###### Layer parameters, types, and default values ########
+layers = {}
+
+# Layer_Composite is the parent of most layers
+default_composite = {
+    "z_depth": ["real", 0.0],
+    "amount": ["real", 1.0],
+    "blend_method": ["integer", 0],
+    }
+
+layers["PasteCanvas"] = default_composite.copy()
+layers["PasteCanvas"].update({
+        "origin": ["vector", [0.0, 0.0]],
+        "canvas": ["canvas", None],
+        "zoom": ["real", 0.0],
+        "time_offset": ["time", "0s"],
+        "children_lock": ["bool", False],
+        "focus": ["vector", [0.0, 0.0]]
+        })
+
+
+## Layers in mod_geometry
+
+layers["circle"] = default_composite.copy()
+layers["circle"].update({
+        "color": ["color", [0,0,0,1]],
+        "radius": ["real", 1.0],
+        "feather": ["real", 0.0],
+        "origin": ["vector", [0.0, 0.0]],
+        "invert": ["bool", False],
+        "falloff": ["integer", 2]
+        })
+
+layers["rectangle"] = default_composite.copy()
+layers["rectangle"].update({
+        "color": ["color", [0,0,0,1]],
+        "point1": ["vector", [0,0]],
+        "point2": ["vector", [1,1]],
+        "expand": ["real", 0.0],
+        "invert": ["bool", False]
+        })
+
+default_shape = default_composite.copy()
+default_shape.update({
+        "color": ["color", [0,0,0,1]],
+        "origin": ["vector", [0.0, 0.0]],
+        "invert": ["bool", False],
+        "antialias": ["bool", True],
+        "feather": ["real",  0.0],
+        "blurtype": ["integer",  1],
+        "winding_style": ["integer", 0]
+        })
+
+layers["region"] = default_shape.copy()
+layers["region"].update({
+        "bline": ["bline", None]
+        })
+
+layers["outline"] = default_shape.copy()
+layers["outline"].update({
+        "bline": ["bline", None],
+        "round_tip[0]": ["bool", True],
+        "round_tip[1]": ["bool", True],
+        "sharp_cusps": ["bool", True],
+        "width": ["real", 1.0],
+        "loopyness": ["real", 1.0],
+        "expand": ["real", 0.0],
+        "homogeneous_width": ["bool", True]
+        })
+
+
+## Layers in mod_gradient
+
+layers["linear_gradient"] = default_composite.copy()
+layers["linear_gradient"].update({
+        "p1": ["vector", [0,0]],
+        "p2": ["vector", [1,1]],
+        "gradient": ["gradient", {0.0:[0,0,0,1], 1.0:[1,1,1,1]} ],
+        "loop": ["bool", False],
+        "zigzag": ["bool", False]
+        })
+
+layers["radial_gradient"] = default_composite.copy()
+layers["radial_gradient"].update({
+        "gradient": ["gradient", {0.0:[0,0,0,1], 1.0:[1,1,1,1]} ],
+        "center": ["vector", [0,0]],
+        "radius": ["real", 1.0],
+        "loop": ["bool", False],
+        "zigzag": ["bool", False]
+        })
+
+
+## Layers in lyr_std
+
+layers["import"] = default_composite.copy()
+layers["import"].update({
+        "tl": ["vector", [-1,1]],
+        "br": ["vector", [1,-1]],
+        "c": ["integer", 1],
+        "gamma_adjust": ["real", 1.0],
+        "filename": ["string", ""],   # <string>foo</string>
+        "time_offset": ["time", "0s"]
+        })
+
+# transforms are not blending
+layers["warp"] = {
+    "src_tl": ["vector", [-1,1]],
+    "src_br": ["vector", [1,-1]],
+    "dest_tl": ["vector", [-1,1]],
+    "dest_tr": ["vector", [1,1]],
+    "dest_br": ["vector", [1,-1]],
+    "dest_bl": ["vector", [-1,-1]],
+    "clip": ["bool", False],
+    "horizon": ["real", 4.0]
+    }
+
+layers["rotate"] = {
+    "origin": ["vector", [0.0, 0.0]],
+    "amount": ["angle", 0] # <angle value=.../>
+    }
+
+layers["translate"] = {
+    "origin": ["vector", [0.0, 0.0]]
+    }
+
+## Layers in mod_filter
+layers["blur"] = default_composite.copy()
+layers["blur"].update({
+        "size": ["vector", [1,1]],
+        "type": ["integer", 3] # 1 is fast gaussian, 3 is regular
+        })
+
+
+###### Layer versions #####################################
+layer_versions = {
+    "outline" : "0.2",
+    "rectangle" : "0.2",
+    "linear_gradient" : "0.0",
+    "blur" : "0.2",
+    None : "0.1" # default
+    }
+
+###### Blend Methods ######################################
+blend_method_names = {
+    0  : "composite",
+    1  : "straight",
+    13 : "onto",
+    21 : "straight onto",
+    12 : "behind",
+    16 : "screen",
+    20 : "overlay",
+    17 : "hand light",
+    6  : "multiply",
+    7  : "divide",
+    4  : "add",
+    5  : "subtract",
+    18 : "difference",
+    2  : "brighten",
+    3  : "darken",
+    8  : "color",
+    9  : "hue",
+    10 : "saturation",
+    11 : "luminance",
+    14 : "alpha brighten", #deprecated
+    15 : "alpha darken",   #deprecated
+    19 : "alpha over"      #deprecated
+    }
+
+blend_methods = dict((v, k) for (k, v) in blend_method_names.iteritems())
+
+###### Functions ##########################################
+def paramType(layer, param, value=None):
+    if layer in layers.keys():
+        layer_params = layers[layer]
+        if param in layer_params.keys():
+            return layer_params[param][0]
+        else:
+            raise Exception, "Invalid parameter type for layer"
+    else:
+        # Unknown layer, try to determine parameter type based on value
+        if value is None:
+            raise Exception, "No information for given layer"
+        if type(value) == int:
+            return "integer"
+        elif type(value) == float:
+            return "real"
+        elif type(value) == bool:
+            return "bool"
+        elif type(value) == dict:
+            if "points" in value.keys():
+                return "bline"
+            elif 0.0 in value.keys():
+                return "gradient"
+            else:
+                raise Exception, "Could not automatically determine parameter type"
+        elif type(value) == list:
+            if len(value) == 2:
+                return "vector"
+            elif len(value) == 3 or len(value) == 4:
+                return "color"
+            else:
+                # The first two could also be canvases
+                return "canvas"
+        elif type(value) == str:
+            return "string"
+
+def defaultLayerVersion(layer):
+    if layer in layer_versions.keys():
+        return layer_versions[layer]
+    else:
+        return layer_versions[None]
+
+def defaultLayerParams(layer):
+    if layer in layers.keys():
+        return layers[layer].copy()
+    else:
+        return {}