diff --git a/src/main/kotlin/io/github/deficuet/unitykt/data/Canvas.kt b/src/main/kotlin/io/github/deficuet/unitykt/data/Canvas.kt
new file mode 100644
index 00000000..61773de5
--- /dev/null
+++ b/src/main/kotlin/io/github/deficuet/unitykt/data/Canvas.kt
@@ -0,0 +1,29 @@
+package io.github.deficuet.unitykt.data
+
+import io.github.deficuet.unitykt.dataImpl.CanvasImpl
+import io.github.deficuet.unitykt.file.ObjectInfo
+import io.github.deficuet.unitykt.file.SerializedFile
+import io.github.deficuet.unitykt.util.ObjectReader
+
+/**
+ *  Errors may occur for bundles with version before `2018.4.34f1`
+ */
+class Canvas private constructor(
+    private val container: ImplementationContainer<CanvasImpl>
+): Behaviour(container) {
+    internal constructor(assetFile: SerializedFile, info: ObjectInfo):
+            this(ImplementationContainer(assetFile, info) { CanvasImpl(ObjectReader(assetFile, info)) })
+
+    val mRenderMode: Int                            get() = container.impl.mRenderMode
+    val mCamera: PPtr<Object>                       get() = container.impl.mCamera
+    val mPlaneDistance: Float                       get() = container.impl.mPlaneDistance
+    val mPixelPerfect: Boolean                      get() = container.impl.mPixelPerfect
+    val mReceivesEvent: Boolean                     get() = container.impl.mReceivesEvent
+    val mOverrideSorting: Boolean                   get() = container.impl.mOverrideSorting
+    val mOverridePixelPerfect: Boolean              get() = container.impl.mOverridePixelPerfect
+    val mSortingBucketNormalizedSize: Float         get() = container.impl.mSortingBucketNormalizedSize
+    val mAdditionalShaderChannelsFlag: Int          get() = container.impl.mAdditionalShaderChannelsFlag
+    val mSortingLayerID: Int                        get() = container.impl.mSortingLayerID
+    val mSortingOrder: Short                        get() = container.impl.mSortingOrder
+    val mTargetDisplay: Byte                        get() = container.impl.mTargetDisplay
+}
\ No newline at end of file
diff --git a/src/main/kotlin/io/github/deficuet/unitykt/data/MonoBehaviour.kt b/src/main/kotlin/io/github/deficuet/unitykt/data/MonoBehaviour.kt
index 7e95b0b5..48e29191 100644
--- a/src/main/kotlin/io/github/deficuet/unitykt/data/MonoBehaviour.kt
+++ b/src/main/kotlin/io/github/deficuet/unitykt/data/MonoBehaviour.kt
@@ -14,7 +14,4 @@ class MonoBehaviour private constructor(
 
     val mScript: PPtr<MonoScript>   get() = container.impl.mScript
     val mName: String               get() = container.impl.mName
-
-    val json: JSONObject?           get() = container.impl.json
-    val jsonString: String          get() = container.impl.jsonString
 }
\ No newline at end of file
diff --git a/src/main/kotlin/io/github/deficuet/unitykt/data/Object.kt b/src/main/kotlin/io/github/deficuet/unitykt/data/Object.kt
index 88f02eb3..5b4fab4d 100644
--- a/src/main/kotlin/io/github/deficuet/unitykt/data/Object.kt
+++ b/src/main/kotlin/io/github/deficuet/unitykt/data/Object.kt
@@ -3,6 +3,7 @@ package io.github.deficuet.unitykt.data
 import io.github.deficuet.unitykt.dataImpl.ObjectImpl
 import io.github.deficuet.unitykt.file.*
 import io.github.deficuet.unitykt.util.ObjectReader
+import org.json.JSONObject
 
 open class Object internal constructor(private val container: ImplementationContainer<ObjectImpl>) {
     internal constructor(assetFile: SerializedFile, info: ObjectInfo):
@@ -15,7 +16,8 @@ open class Object internal constructor(private val container: ImplementationCont
     val byteSize: UInt = container.info.byteSize
     val platform: BuildTarget = assetFile.targetPlatform
     val serializedType: SerializedType? = container.info.serializedType
-    val bytes: ByteArray get() = container.impl.bytes
+
+    val bytes: ByteArray                get() = container.impl.bytes
 
     /**
      * @see [SerializedType.Tree.readTypeString]
@@ -26,4 +28,7 @@ open class Object internal constructor(private val container: ImplementationCont
      * @see [SerializedType.Tree.readType]
      */
     fun toType() = container.impl.toType()
+
+    val typeTreeJson: JSONObject?       get() = container.impl.typeTreeJson
+    val typeTreeJsonString: String      get() = container.impl.typeTreeJsonString
 }
\ No newline at end of file
diff --git a/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/CanvasImpl.kt b/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/CanvasImpl.kt
new file mode 100644
index 00000000..0cb8e430
--- /dev/null
+++ b/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/CanvasImpl.kt
@@ -0,0 +1,29 @@
+package io.github.deficuet.unitykt.dataImpl
+
+import io.github.deficuet.unitykt.data.*
+import io.github.deficuet.unitykt.util.ObjectReader
+
+/**
+ *  Errors may occur for bundles with version before `2018.4.34f1`
+ */
+class CanvasImpl internal constructor(reader: ObjectReader): BehaviourImpl(reader) {
+    val mRenderMode = reader.readInt()
+    val mCamera = PPtr<Object>(reader)          //PPtr<Camera>
+    val mPlaneDistance = reader.readFloat()
+    val mPixelPerfect = reader.readBool()
+    val mReceivesEvent = reader.readBool()
+    val mOverrideSorting = reader.readBool()
+    val mOverridePixelPerfect = reader.readBool()
+    val mSortingBucketNormalizedSize = reader.readFloat()
+    val mAdditionalShaderChannelsFlag = reader.readInt()
+    val mSortingLayerID: Int
+    val mSortingOrder: Short
+    val mTargetDisplay: Byte
+
+    init {
+        reader.alignStream()
+        mSortingLayerID = reader.readInt()
+        mSortingOrder = reader.readShort()
+        mTargetDisplay = reader.readSByte()
+    }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/MonoBehaviourImpl.kt b/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/MonoBehaviourImpl.kt
index 728016d3..902a1d1b 100644
--- a/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/MonoBehaviourImpl.kt
+++ b/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/MonoBehaviourImpl.kt
@@ -8,8 +8,4 @@ import io.github.deficuet.unitykt.util.toJSONObject
 class MonoBehaviourImpl internal constructor(reader: ObjectReader): BehaviourImpl(reader) {
     val mScript = PPtr<MonoScript>(reader)
     val mName = reader.readAlignedString()
-
-    val json by lazy { toType()?.toJSONObject() }
-
-    val jsonString by lazy { json?.toString(4) ?: "null" }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/ObjectImpl.kt b/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/ObjectImpl.kt
index 73090813..042bbf2d 100644
--- a/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/ObjectImpl.kt
+++ b/src/main/kotlin/io/github/deficuet/unitykt/dataImpl/ObjectImpl.kt
@@ -2,6 +2,8 @@ package io.github.deficuet.unitykt.dataImpl
 
 import io.github.deficuet.unitykt.file.BuildTarget
 import io.github.deficuet.unitykt.util.ObjectReader
+import io.github.deficuet.unitykt.util.toJSONObject
+import org.json.JSONObject
 
 open class ObjectImpl internal constructor(private val reader: ObjectReader) {
     val assetFile = reader.assetFile
@@ -20,4 +22,7 @@ open class ObjectImpl internal constructor(private val reader: ObjectReader) {
 
     fun dump() = serializedType?.typeTree?.readTypeString(reader)
     fun toType() = serializedType?.typeTree?.readType(reader)
+
+    val typeTreeJson: JSONObject? get() = toType()?.toJSONObject()
+    val typeTreeJsonString: String get() = typeTreeJson?.toString(4) ?: "null"
 }
\ No newline at end of file
diff --git a/src/main/kotlin/io/github/deficuet/unitykt/file/SerializedFile.kt b/src/main/kotlin/io/github/deficuet/unitykt/file/SerializedFile.kt
index b9bd7217..d23238e1 100644
--- a/src/main/kotlin/io/github/deficuet/unitykt/file/SerializedFile.kt
+++ b/src/main/kotlin/io/github/deficuet/unitykt/file/SerializedFile.kt
@@ -335,6 +335,7 @@ class SerializedFile(
                 ClassIDType.AssetBundle -> AssetBundle(this, info)
                 ClassIDType.AudioClip -> AudioClip(this, info)
                 ClassIDType.Avatar -> Avatar(this, info)
+                ClassIDType.Canvas -> Canvas(this, info)
                 ClassIDType.Font -> Font(this, info)
                 ClassIDType.GameObject -> GameObject(this, info)
                 ClassIDType.Material -> Material(this, info)