diff --git a/ILSpy/Images/README.md b/ILSpy/Images/README.md
new file mode 100644
index 000000000..c308305fb
--- /dev/null
+++ b/ILSpy/Images/README.md
@@ -0,0 +1,73 @@
+Icons used in ILSpy:
+--------------------
+
+|                           | SVG | XAML | PNG | Origin                                                                          | Notes   |
+|---------------------------|-----|------|-----|---------------------------------------------------------------------------------|---------|
+| Assembly                  |  x  |  x   |     | VS 2017 Icon Pack (Reference)                                                   |         |
+| AssemblyList              |  x  |  x   |     | VS 2017 Icon Pack (AddReference)                                                |         |
+| AssemblyListGAC           |  x  |  x   |     | based on VS 2017 Icon Pack (AddReference) + "GAC" text                          |         |
+| AssemblyWarning           |  x  |  x   |     | VS 2017 Icon Pack (ReferenceWarning)                                            |         |
+| Back                      |  x  |  x   |  x  | VS 2017 Icon Pack (Backward)                                                    |         |
+| Break                     |     |      |  x  | old (from SharpDevelop)                                                         | unused? |
+| Breakpoint                |     |      |  x  | old (from SharpDevelop)                                                         | unused? |
+| Class                     |  x  |  x   |  x  | VS 2017 Icon Pack (Class)                                                       |         |
+| ClearSearch               |     |      |  x  | old (Fugue: Cross-white.png)                                                    | TODO    |
+| CollapseAll               |  x  |  x   |  x  | VS 2017 Icon Pack (CollapseAll)                                                 |         | 
+| Constructor               |  x  |  x   |     | based on VS 2017 Icon Pack (Method) using a different colour                    |         |
+| Copy                      |  x  |  x   |     | VS 2017 Icon Pack (Copy)                                                        |         |
+| CurrentLine               |     |      |  x  |                                                                                 |         |
+| Delegate                  |  x  |  x   |  x  | VS 2017 Icon Pack (Delegate)                                                    |         |
+| Delete                    |  x  |  x   |     |                                                                                 |         |
+| DisabledBreakpoint        |     |      |  x  | old                                                                             | unused? |
+| Enum                      |  x  |  x   |  x  | VS 2017 Icon Pack (Enumerator)                                                  |         |
+| EnumValue                 |  x  |  x   |     | VS 2017 Icon Pack (EnumItem)                                                    |         |
+| Event                     |  x  |  x   |     | VS 2017 Icon Pack (Event)                                                       |         |
+| ExtensionMethod           |  x  |  x   |     | VS 2017 Icon Pack (ExtensionMethod)                                             |         |
+| Field                     |  x  |  x   |     |                                                                                 |         |
+| FieldReadOnly             |     |      |  x  |                                                                                 |         |
+| FindAssembly              |  x  |  x   |     | based on VS 2017 Icon Pack (Reference + Search) with transparency modifications |         |
+| Folder.Closed             |  x  |  x   |     | VS 2017 Icon Pack (Folder)                                                      |         |
+| Folder.Open               |  x  |  x   |     | VS 2017 Icon Pack (FolderOpen)                                                  |         |
+| Forward                   |  x  |  x   |  x  | VS 2017 Icon Pack (Forward)                                                     |         |
+| Indexer                   |  x  |  x   |     | VS 2017 Icon Pack (Indexer)                                                     |         |
+| Interface                 |  x  |  x   |  x  | VS 2017 Icon Pack (Interface)                                                   |         |
+| Library                   |  x  |  x   |     | VS 2017 Icon Pack (Library)                                                     |         |
+| Literal                   |  x  |  x   |     | VS 2017 Icon Pack (Literal)                                                     |         |
+| Method                    |  x  |  x   |     | VS 2017 Icon Pack (Method)                                                      |         |
+| Namespace                 |  x  |  x   |     | VS 2017 Icon Pack (Namespace)                                                   |         |
+| OK                        |  x  |  x   |     | VS 2017 Icon Pack (StatusOK)                                                    |         |
+| Open                      |  x  |  x   |  x  | VS 2017 Icon Pack (Open)                                                        |         |
+| Operator                  |  x  |  x   |     | VS 2017 Icon Pack (Operator)                                                    |         |
+| OverlayCompilerControlled |     |      |  x  | TODO                                                                            |         |
+| OverlayInternal           |  x  |  x   |     | based on VS 2017 Icon Pack (Friend)                                             |         |
+| OverlayPrivate            |  x  |  x   |     | extracted from VS 2017 Icon Pack (ActionPrivate)                                |         |
+| OverlayPrivateProtected   |  x  |  x   |     | combined OverlayPrivate and OverlayProtected                                    |         |
+| OverlayProtected          |  x  |  x   |     | extracted from VS 2017 Icon Pack (ActionProtected)                              |         |
+| OverlayProtectedInternal  |  x  |  x   |     | combined OverlayProtected and OverlayInternal                                   |         |
+| OverlayStatic             |  x  |  x   |     | custom                                                                          |         |
+| PrivateInternal           |  x  |  x   |     | combined OverlayPrivate and OverlayInternal                                     | TODO    |
+| Property                  |  x  |  x   |     | VS 2017 Icon Pack (Property)                                                    |         |
+| PublicOnly                |  x  |  x   |     |                                                                                 |         |
+| ReferenceFolder           |  x  |  x   |     | combined VS 2017 Icon Pack (Reference) two times                                |         |
+| Refresh                   |  x  |  x   |  x  | VS 2017 Icon Pack (Refresh)                                                     |         |
+| Resource                  |  x  |  x   |     |                                                                                 |         |
+| ResourceImage             |  x  |  x   |     |                                                                                 |         |
+| ResourceResourcesFile     |  x  |  x   |     |                                                                                 |         |
+| ResourceXml               |  x  |  x   |     |                                                                                 |         |
+| ResourceXsd               |     |      |  x  |                                                                                 | TODO    |
+| ResourceXsl               |     |      |  x  |                                                                                 | TODO    |
+| ResourceXslt              |  x  |  x   |     | VS 2017 Icon Pack (XSLTTemplate)                                                |         |
+| Save                      |     |      |     | VS 2017 Icon Pack (Save)                                                        |         |
+| Search                    |     |      |     | VS 2017 Icon Pack (Search)                                                      |         |
+| SearchMsdn                |     |      |     | based on VS 2017 Icon Pack (Search) + Microsoft Logo                            |         |
+| ShowAll                   |     |      |  x  | accessibility icon mash-up                                                      | TODO    |
+| Sort                      |     |  x   |  x  | VS 2017 Icon Pack (SortAscending)                                               |         |
+| Struct                    | x   |  x   |  x  | VS 2017 Icon Pack (Structure)                                                   |         |
+| SubTypes                  | x   |  x   |     |                                                                                 |         |
+| SuperTypes                | x   |  x   |     |                                                                                 |         |
+| ViewCode                  | x   |  x   |     |                                                                                 |         |
+| VirtualMethod             |     |  x   |  x  | old                                                                             | TODO    |
+| Warning                   |     |  x   |     | VS 2017 Icon Pack (Warning)                                                     |         |
+
+Note: All XAML icons from VS 2017 Icon Pack are modified to not include a `Viewbox` XAML root element. We always use a `Drawing`-derived root element.
+Note: When changing an icon, start with SVG and use https://github.com/BerndK/SvgToXaml to generate the XAML. The result is much better XAML than what Inkscape produces.
\ No newline at end of file