diff --git a/src/data/field.hpp b/src/data/field.hpp
index 553a8559..d9f1927e 100644
--- a/src/data/field.hpp
+++ b/src/data/field.hpp
@@ -127,30 +127,10 @@ public:
   inline RealSize    getSize() const { return RealSize(width, height); }
   inline RealRect    getExternalRect() const { return RealRect(left, top, width, height); }
   inline std::string getExternalRectString(double scale, Radians angle, double bleed, int img_width, int img_height, int img_offset) { ///< update the style before calling this
-    double x = left * scale, y = top * scale;
-    double w = width * scale, h = height * scale;
-    RealRect rect(x, y, w, h);
-    int degrees = 0;
-    if (is_rad0(angle)) {
-    } else if (is_rad180(angle)) {
-      rect = RealRect(img_width - x - w, img_height - y - h, w, h);
-      degrees = 180;
-    } else if (is_rad90(angle)) {
-      rect = RealRect(y, img_height - x - w, h, w);
-      degrees = 90;
-    } else if (is_rad270(angle)) {
-      rect = RealRect(img_width - y - h, x, h, w);
-      degrees = 270;
-    } else {
-      return "";
-    }
-    return "<mse-crop-data>" + std::to_string((int)std::ceil (rect.x + bleed + img_offset)) +
-           "-"               + std::to_string((int)std::ceil (rect.y + bleed)) +
-           "-"               + std::to_string((int)std::floor(rect.width)) +
-           "-"               + std::to_string((int)std::floor(rect.height)) +
-           "-"               + std::to_string(degrees) +
-           "</mse-crop-data>";
-  }
+    RealRect rect(left, top, width, height);
+    int degrees = lround(rad_to_deg(this->angle));
+    return transformAndEncodeRectInString(rect, degrees, scale, angle, bleed, img_width, img_height, img_offset);
+  }
 
   /// Does this style have a non-zero size (or is it scripted)?
   bool hasSize() const;
diff --git a/src/data/field/image.hpp b/src/data/field/image.hpp
index 3b30cac2..c72b6e84 100644
--- a/src/data/field/image.hpp
+++ b/src/data/field/image.hpp
@@ -59,12 +59,7 @@ public:
   inline std::string getExternalImageString(const SetP& set, ImageValue* value) { ///< update the style before calling this
     auto imageInputStream = set->openIn(value->filename);
     Image img(*imageInputStream, wxBITMAP_TYPE_PNG);
-    if (!img.IsOk()) throw ScriptError(_ERROR_2_("file not found", value->filename.toStringForKey(), set));
-    String temppath = wxFileName::CreateTempFileName(_("mse")) + _(".png");
-    img.SaveFile(temppath);
-    std::string s = "<mse-image-data>" + fileToUTF8(temppath.ToStdString()) + "</mse-image-data>";
-    wxRemoveFile(temppath);
-    wxRemoveFile(temppath.substr(0, temppath.size() - 4));
-    return s;
+    if (!img.IsOk()) throw ScriptError(_ERROR_2_("file not found", value->filename.toStringForKey(), set));
+    return encodeImageInString(img);
   }
 };
diff --git a/src/data/format/file_to_text.h b/src/data/format/file_to_text.h
deleted file mode 100644
index 87186ce6..00000000
--- a/src/data/format/file_to_text.h
+++ /dev/null
@@ -1,76 +0,0 @@
-//+----------------------------------------------------------------------------+
-//| Description:  Magic Set Editor - Program to make card games                |
-//| Copyright:    (C) Twan van Laarhoven and the other MSE developers          |
-//| License:      GNU General Public License 2 or later (see file COPYING)     |
-//+----------------------------------------------------------------------------+
-
-#pragma once
-
-// ----------------------------------------------------------------------------- : Includes
-
-#include <util/prec.hpp>
-#include <fstream>
-
-// ----------------------------------------------------------------------------- : File to UTF8 Encoding
-
-inline std::string fileToUTF8(const std::string& filepath) {
-  // File to char
-  std::ifstream file(filepath, std::ios::binary);
-  file.unsetf(std::ios::skipws);
-  std::vector<unsigned char> buffer = std::vector<unsigned char>(std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>());
-  int size = buffer.size();
-  if (size < 2) {
-    queue_message(MESSAGE_WARNING, _("File too small to encode"));
-    return "";
-  }
-  // All bytes that have a highest bit of 0 are valid UTF8 characters, so:
-  // Reset the highest bit of each byte, store these bits in additional bytes at the end
-  const unsigned char highest_bit = 1 << 7;
-  unsigned char added_byte = 0;
-  for (int i = 0, b = 0 ; i < size ; ++i, ++b) {
-    if (b == 7) {                         // Never set the highest bit of the added byte
-      buffer.push_back(added_byte);
-      b = 0;
-    }
-    unsigned char bit = 1 << b;
-    if ((buffer[i] & highest_bit) != 0) { // The highest bit of the buffer is set
-      buffer[i] &= ~highest_bit;          // Reset the highest bit of the buffer
-      added_byte |= bit;                  // Set the bit of the added byte
-    } else {
-      added_byte &= ~bit;                 // Reset the bit of the added byte
-    }
-  }
-  buffer.push_back(added_byte);
-  // Char to string
-  return std::string(buffer.begin(), buffer.end());
-}
-
-inline bool UTF8ToFile(const std::string& filepath, std::string& string) {
-  // String to char
-  std::vector<unsigned char> buffer(string.begin(), string.end());
-  int size = buffer.size();
-  if (size < 2) {
-    queue_message(MESSAGE_WARNING, _("File too small to decode"));
-    return false;
-  }
-  // Restore the highest bit of each byte
-  size = (size * 7) / 8;
-  const unsigned char highest_bit = 1 << 7;
-  unsigned char added_byte = buffer[size];
-  for (int i = 0, j = size, b = 0 ; i < size ; ++i, ++b) {
-    if (b == 7) {
-      ++j;
-      added_byte = buffer[j];
-      b = 0;
-    }
-    unsigned char bit = 1 << b;
-    if ((added_byte & bit) != 0) { // The bit of the added byte is set
-      buffer[i] |= highest_bit;    // Set the highest bit of the buffer
-    }
-  }
-  buffer.resize(size);
-  // Char to file
-  std::ofstream file(filepath, std::ios::out|std::ios::binary);
-  std::copy(buffer.cbegin(), buffer.cend(), std::ostream_iterator<unsigned char>(file));
-  return true;
-}
diff --git a/src/data/format/image.cpp b/src/data/format/image.cpp
index 425a9b02..fbbc8903 100644
--- a/src/data/format/image.cpp
+++ b/src/data/format/image.cpp
@@ -10,7 +10,6 @@
 #include <util/tagged_string.hpp>
 #include <data/format/formats.hpp>
 #include <data/format/clipboard.hpp>
-#include <data/format/file_to_text.h>
 #include <data/game.hpp>
 #include <data/field/image.hpp>
 #include <data/set.hpp>
diff --git a/src/data/format/image_encoding.hpp b/src/data/format/image_encoding.hpp
new file mode 100644
index 00000000..e6a6beac
--- /dev/null
+++ b/src/data/format/image_encoding.hpp
@@ -0,0 +1,227 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make card games                |
+//| Copyright:    (C) Twan van Laarhoven and the other MSE developers          |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#pragma once
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <wx/filename.h>
+#include <fstream>
+
+// ----------------------------------------------------------------------------- : Crop Rect Encoding
+
+/// Encode a rect in a std::string
+inline static std::string encodeRectInStdString(wxRect rect, int degrees) {
+  return "<mse-crop-data>" + std::to_string((int)std::ceil (rect.x)) +
+         ";"               + std::to_string((int)std::ceil (rect.y)) +
+         ";"               + std::to_string((int)std::floor(rect.width)) +
+         ";"               + std::to_string((int)std::floor(rect.height)) +
+         ";"               + std::to_string(degrees) +
+         "</mse-crop-data>";
+}
+
+/// Encode a rect in a wxString
+inline static String encodeRectInWxString(wxRect rect, int degrees) {
+  return _("<mse-crop-data>") + wxString::Format(wxT("%i"), (int)std::ceil (rect.x)) +
+         _(";")               + wxString::Format(wxT("%i"), (int)std::ceil (rect.y)) +
+         _(";")               + wxString::Format(wxT("%i"), (int)std::floor(rect.width)) +
+         _(";")               + wxString::Format(wxT("%i"), (int)std::floor(rect.height)) +
+         _(";")               + wxString::Format(wxT("%i"), degrees) +
+         _("</mse-crop-data>");
+}
+
+/// Retreive a rect encoded in a string, return true if successful
+inline static bool decodeRectFromString(const String& rectString, wxRect& rect_out, int& degrees_out) {
+  size_t start = rectString.find(_("<mse-crop-data>"));
+  if (start == String::npos) return false;
+  size_t end = rectString.find(_("</mse-crop-data>"), start + 15);
+  if (end == String::npos) return false;
+  String string = rectString.substr(start + 15, end - (start + 15));
+  if (string.empty()) return false;
+
+  size_t divider = string.find(_(";"));
+  if (divider == String::npos) return false;
+  if (divider == 0) return false;
+  int x;
+  if(!string.substr(0, divider).ToInt(&x)) return false;
+  string = string.substr(divider + 1);
+
+  divider = string.find(_(";"));
+  if (divider == String::npos) return false;
+  if (divider == 0) return false;
+  int y;
+  if(!string.substr(0, divider).ToInt(&y)) return false;
+  string = string.substr(divider + 1);
+
+  divider = string.find(_(";"));
+  if (divider == String::npos) return false;
+  if (divider == 0) return false;
+  int width;
+  if(!string.substr(0, divider).ToInt(&width)) return false;
+  string = string.substr(divider + 1);
+
+  divider = string.find(_(";"));
+  if (divider == String::npos) return false;
+  if (divider == 0) return false;
+  int height;
+  if(!string.substr(0, divider).ToInt(&height)) return false;
+  string = string.substr(divider + 1);
+
+  if(!string.ToInt(&degrees_out)) return false;
+
+  rect_out = wxRect(x, y, width, height);
+  return true;
+}
+
+/// Apply a transformation to a rect, return true if successful
+inline static bool transformEncodedRect(wxRect& rect, int& degrees, double scale, Radians angle, double bleed, int img_width, int img_height, int img_offset) {
+  if (degrees != 0 && degrees != 90 && degrees != 180 && degrees != 270) return false;
+  rect = wxRect(rect.x * scale, rect.y * scale, rect.width * scale, rect.height * scale);
+  if (is_rad0(angle)) {
+  } else if (is_rad180(angle)) {
+    rect = wxRect(img_width - rect.x - rect.width, img_height - rect.y - rect.height, rect.width, rect.height);
+    degrees += 180;
+  } else if (is_rad90(angle)) {
+    rect = wxRect(rect.y, img_height - rect.x - rect.width, rect.height, rect.width);
+    degrees += 90;
+  } else if (is_rad270(angle)) {
+    rect = wxRect(img_width - rect.y - rect.height, rect.x, rect.height, rect.width);
+    degrees += 270;
+  } else {
+    return false;
+  }
+  rect = wxRect(rect.x + bleed + img_offset, rect.y + bleed, rect.width, rect.height);
+  if (degrees >= 360) degrees -= 360;
+  return true;
+}
+
+/// Retreive a rect encoded in a string, apply a transformation, then encode it back
+inline static String transformEncodedRect(const String& rectString, double scale, Radians angle, double bleed, int img_width, int img_height, int img_offset) { ///< update the style before calling this
+  wxRect rect;
+  int degrees;
+  if (!decodeRectFromString(rectString, rect, degrees)) return _("");
+  if (!transformEncodedRect(rect, degrees, scale, angle, bleed, img_width, img_height, img_offset)) return _("");
+  return encodeRectInWxString(rect, degrees);
+}
+
+/// Retreive all rects encoded in a string, apply a transformation, then encode them back
+inline static String transformAllEncodedRects(const String& rectString, double scale, Radians angle, double bleed, int img_width, int img_height, int img_offset) { ///< update the style before calling this
+  wxRect rect;
+  int degrees;
+  size_t start = rectString.find(_("<mse-crop-data>"));
+  if (start == String::npos) return rectString;
+  size_t end = 0;
+  String result;
+  while (start != String::npos) {
+    result = result + rectString.substr(end, start - end);
+    end = rectString.find(_("</mse-crop-data>"), start + 15);
+    result = result + transformEncodedRect(rectString.substr(start, end - start), scale, angle, bleed, img_width, img_height, img_offset);
+    start = rectString.find(_("<mse-crop-data>"), end);
+  }
+  result = result + rectString.substr(end);
+  return result;
+}
+
+/// Apply a transformation to a rect, then encode it in a string
+inline static std::string transformAndEncodeRectInString(wxRect rect, int degrees, double scale, Radians angle, double bleed, int img_width, int img_height, int img_offset) {
+  if (!transformEncodedRect(rect, degrees, scale, angle, bleed, img_width, img_height, img_offset)) return "";
+  return encodeRectInStdString(rect, degrees);
+}
+
+// ----------------------------------------------------------------------------- : File to UTF8 Encoding
+
+/// Encode a file in a string
+inline static std::string fileToUTF8(const std::string& filepath) {
+  // File to char
+  std::ifstream file(filepath, std::ios::binary);
+  file.unsetf(std::ios::skipws);
+  std::vector<unsigned char> buffer = std::vector<unsigned char>(std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>());
+  int size = buffer.size();
+  if (size < 2) {
+    queue_message(MESSAGE_WARNING, _("File too small to encode"));
+    return "";
+  }
+  // All bytes that have a highest bit of 0 are valid UTF8 characters, so:
+  // Reset the highest bit of each byte, store these bits in additional bytes at the end
+  const unsigned char highest_bit = 1 << 7;
+  unsigned char added_byte = 0;
+  for (int i = 0, b = 0 ; i < size ; ++i, ++b) {
+    if (b == 7) {                         // Never set the highest bit of the added byte
+      buffer.push_back(added_byte);
+      b = 0;
+    }
+    unsigned char bit = 1 << b;
+    if ((buffer[i] & highest_bit) != 0) { // The highest bit of the buffer is set
+      buffer[i] &= ~highest_bit;          // Reset the highest bit of the buffer
+      added_byte |= bit;                  // Set the bit of the added byte
+    } else {
+      added_byte &= ~bit;                 // Reset the bit of the added byte
+    }
+  }
+  buffer.push_back(added_byte);
+  // Char to string
+  return std::string(buffer.begin(), buffer.end());
+}
+
+/// Retreive a file encoded in a string, return true if successful
+inline static bool UTF8ToFile(const std::string& filepath, std::string& string) {
+  // String to char
+  std::vector<unsigned char> buffer(string.begin(), string.end());
+  int size = buffer.size();
+  if (size < 2) {
+    queue_message(MESSAGE_WARNING, _("File too small to decode"));
+    return false;
+  }
+  // Restore the highest bit of each byte
+  size = (size * 7) / 8;
+  const unsigned char highest_bit = 1 << 7;
+  unsigned char added_byte = buffer[size];
+  for (int i = 0, j = size, b = 0 ; i < size ; ++i, ++b) {
+    if (b == 7) {
+      ++j;
+      added_byte = buffer[j];
+      b = 0;
+    }
+    unsigned char bit = 1 << b;
+    if ((added_byte & bit) != 0) { // The bit of the added byte is set
+      buffer[i] |= highest_bit;    // Set the highest bit of the buffer
+    }
+  }
+  buffer.resize(size);
+  // Char to file
+  std::ofstream file(filepath, std::ios::out|std::ios::binary);
+  std::copy(buffer.cbegin(), buffer.cend(), std::ostream_iterator<unsigned char>(file));
+  return true;
+}
+
+/// Encode an image in a string
+inline static std::string encodeImageInString(const Image& img) {
+  String temppath = wxFileName::CreateTempFileName(_("mse")) + _(".png");
+  img.SaveFile(temppath);
+  std::string s = "<mse-image-data>" + fileToUTF8(temppath.ToStdString()) + "</mse-image-data>";
+  wxRemoveFile(temppath);
+  wxRemoveFile(temppath.substr(0, temppath.size() - 4));
+  return s;
+}
+
+/// Retreive an image encoded in a string
+inline static Image decodeImageFromString(const String& string) {
+  Image img;
+  size_t first = string.find(_("<mse-image-data>"));
+  if (first == String::npos) return img;
+  size_t last = string.find(_("</mse-image-data>"), first + 16);
+  if (last == String::npos) return img;
+  std::string s = string.substr(first + 16, last - (first + 16)).ToStdString();
+  if (s.empty()) return img;
+
+  const std::string& temppath = (wxFileName::CreateTempFileName(_("mse")) + _(".png")).ToStdString();
+  UTF8ToFile(temppath, s);
+  img.LoadFile(temppath, wxBITMAP_TYPE_PNG);
+  wxRemoveFile(temppath);
+  wxRemoveFile(temppath.substr(0, temppath.size() - 4));
+  return img;
+}
diff --git a/src/gfx/rotate_image.cpp b/src/gfx/rotate_image.cpp
index 5f78a943..aa0dd10e 100644
--- a/src/gfx/rotate_image.cpp
+++ b/src/gfx/rotate_image.cpp
@@ -14,7 +14,7 @@
 // Rotates an image
 // 'Rotater' is a function object that knows how to 'rotate' a pixel coordinate
 template <class Rotater>
-Image rotate_image_impl(Image img) {
+Image rotate_image_impl(const Image& img) {
   UInt width = img.GetWidth(), height = img.GetHeight();
   // initialize the return image
   Image ret;
diff --git a/src/util/io/package.hpp b/src/util/io/package.hpp
index 13a778a8..0a1e3591 100644
--- a/src/util/io/package.hpp
+++ b/src/util/io/package.hpp
@@ -13,7 +13,7 @@
 #include <util/error.hpp>
 #include <util/file_utils.hpp>
 #include <util/vcs.hpp>
-#include <data/format/file_to_text.h>
+#include <data/format/image_encoding.hpp>
 
 class Package;
 class wxFileInputStream;
@@ -54,71 +54,14 @@ public:
 
   inline String const& toStringForKey() const { return fn; }
 
-  /// Retreive a rect from a filename
-  inline static void getExternalRect(const String& filename, wxRect& rect_out, int& degrees_out) {
-    size_t first = filename.find(_("<mse-crop-data>"));
-    if (first == String::npos) return;
-    size_t last = filename.find(_("</mse-crop-data>"), first + 15);
-    if (last == String::npos) return;
-    String string = filename.substr(first + 15, last - (first + 15));
-    if (string.empty()) return;
-
-    size_t divider = string.find(_("-"));
-    if (divider == String::npos) return;
-    if (divider == 0) return;
-    int x;
-    if(!string.substr(0, divider).ToInt(&x)) return;
-    string = string.substr(divider + 1);
-
-    divider = string.find(_("-"));
-    if (divider == String::npos) return;
-    if (divider == 0) return;
-    int y;
-    if(!string.substr(0, divider).ToInt(&y)) return;
-    string = string.substr(divider + 1);
-
-    divider = string.find(_("-"));
-    if (divider == String::npos) return;
-    if (divider == 0) return;
-    int width;
-    if(!string.substr(0, divider).ToInt(&width)) return;
-    string = string.substr(divider + 1);
-
-    divider = string.find(_("-"));
-    if (divider == String::npos) return;
-    if (divider == 0) return;
-    int height;
-    if(!string.substr(0, divider).ToInt(&height)) return;
-    string = string.substr(divider + 1);
-
-    if(!string.ToInt(&degrees_out)) return;
-
-    rect_out = wxRect(x, y, width, height);
-  }
+  /// Retreive a rect from a filename
   inline void getExternalRect(wxRect& rect_out, int& degrees_out) {
-    getExternalRect(fn, rect_out, degrees_out);
-  }
-
-  /// Retreive an image from a filename
-  inline static Image getExternalImage(const String& filename) {
-    Image img;
-    size_t first = filename.find(_("<mse-image-data>"));
-    if (first == String::npos) return img;
-    size_t last = filename.find(_("</mse-image-data>"), first + 16);
-    if (last == String::npos) return img;
-    std::string s = filename.substr(first + 16, last - (first + 16)).ToStdString();
-    if (s.empty()) return img;
-
-    const std::string& temppath = (wxFileName::CreateTempFileName(_("mse")) + _(".png")).ToStdString();
-    UTF8ToFile(temppath, s);
-    img.LoadFile(temppath, wxBITMAP_TYPE_PNG);
-    wxRemoveFile(temppath);
-    wxRemoveFile(temppath.substr(0, temppath.size() - 4));
-    return img;
-  }
-  inline Image getExternalImage() {
-    return getExternalImage(fn);
-  }
+    decodeRectFromString(fn, rect_out, degrees_out);
+  }
+  /// Retreive an image from a filename
+  inline Image getExternalImage() {
+    return decodeImageFromString(fn);
+  }
 
 private:
   LocalFileName(const wxString& fn) : fn(fn) {}