diff --git a/invokeai/frontend/web/src/features/nodes/store/util/testUtils.ts b/invokeai/frontend/web/src/features/nodes/store/util/testUtils.ts
index efde3336e2..b68ff8bef6 100644
--- a/invokeai/frontend/web/src/features/nodes/store/util/testUtils.ts
+++ b/invokeai/frontend/web/src/features/nodes/store/util/testUtils.ts
@@ -298,7 +298,149 @@ export const main_model_loader: InvocationTemplate = {
   useCache: true,
   nodePack: 'invokeai',
   classification: 'stable',
-}
+};
+
+export const img_resize: InvocationTemplate = {
+  title: 'Resize Image',
+  type: 'img_resize',
+  version: '1.2.2',
+  tags: ['image', 'resize'],
+  description: 'Resizes an image to specific dimensions',
+  outputType: 'image_output',
+  inputs: {
+    board: {
+      name: 'board',
+      title: 'Board',
+      required: false,
+      description: 'The board to save the image to',
+      fieldKind: 'input',
+      input: 'direct',
+      ui_hidden: false,
+      type: {
+        name: 'BoardField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+    },
+    metadata: {
+      name: 'metadata',
+      title: 'Metadata',
+      required: false,
+      description: 'Optional metadata to be saved with the image',
+      fieldKind: 'input',
+      input: 'connection',
+      ui_hidden: false,
+      type: {
+        name: 'MetadataField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+    },
+    image: {
+      name: 'image',
+      title: 'Image',
+      required: true,
+      description: 'The image to resize',
+      fieldKind: 'input',
+      input: 'any',
+      ui_hidden: false,
+      type: {
+        name: 'ImageField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+    },
+    width: {
+      name: 'width',
+      title: 'Width',
+      required: false,
+      description: 'The width to resize to (px)',
+      fieldKind: 'input',
+      input: 'any',
+      ui_hidden: false,
+      type: {
+        name: 'IntegerField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+      default: 512,
+      exclusiveMinimum: 0,
+    },
+    height: {
+      name: 'height',
+      title: 'Height',
+      required: false,
+      description: 'The height to resize to (px)',
+      fieldKind: 'input',
+      input: 'any',
+      ui_hidden: false,
+      type: {
+        name: 'IntegerField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+      default: 512,
+      exclusiveMinimum: 0,
+    },
+    resample_mode: {
+      name: 'resample_mode',
+      title: 'Resample Mode',
+      required: false,
+      description: 'The resampling mode',
+      fieldKind: 'input',
+      input: 'any',
+      ui_hidden: false,
+      type: {
+        name: 'EnumField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+      options: ['nearest', 'box', 'bilinear', 'hamming', 'bicubic', 'lanczos'],
+      default: 'bicubic',
+    },
+  },
+  outputs: {
+    image: {
+      fieldKind: 'output',
+      name: 'image',
+      title: 'Image',
+      description: 'The output image',
+      type: {
+        name: 'ImageField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+      ui_hidden: false,
+    },
+    width: {
+      fieldKind: 'output',
+      name: 'width',
+      title: 'Width',
+      description: 'The width of the image in pixels',
+      type: {
+        name: 'IntegerField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+      ui_hidden: false,
+    },
+    height: {
+      fieldKind: 'output',
+      name: 'height',
+      title: 'Height',
+      description: 'The height of the image in pixels',
+      type: {
+        name: 'IntegerField',
+        isCollection: false,
+        isCollectionOrScalar: false,
+      },
+      ui_hidden: false,
+    },
+  },
+  useCache: true,
+  nodePack: 'invokeai',
+  classification: 'stable',
+};
 
 export const templates: Templates = {
   add,
@@ -306,6 +448,7 @@ export const templates: Templates = {
   collect,
   scheduler,
   main_model_loader,
+  img_resize,
 };
 
 export const schema = {
@@ -1068,6 +1211,205 @@ export const schema = {
         },
         class: 'invocation',
       },
+      ImageResizeInvocation: {
+        properties: {
+          board: {
+            anyOf: [
+              {
+                $ref: '#/components/schemas/BoardField',
+              },
+              {
+                type: 'null',
+              },
+            ],
+            description: 'The board to save the image to',
+            field_kind: 'internal',
+            input: 'direct',
+            orig_required: false,
+            ui_hidden: false,
+          },
+          metadata: {
+            anyOf: [
+              {
+                $ref: '#/components/schemas/MetadataField',
+              },
+              {
+                type: 'null',
+              },
+            ],
+            description: 'Optional metadata to be saved with the image',
+            field_kind: 'internal',
+            input: 'connection',
+            orig_required: false,
+            ui_hidden: false,
+          },
+          id: {
+            type: 'string',
+            title: 'Id',
+            description: 'The id of this instance of an invocation. Must be unique among all instances of invocations.',
+            field_kind: 'node_attribute',
+          },
+          is_intermediate: {
+            type: 'boolean',
+            title: 'Is Intermediate',
+            description: 'Whether or not this is an intermediate invocation.',
+            default: false,
+            field_kind: 'node_attribute',
+            ui_type: 'IsIntermediate',
+          },
+          use_cache: {
+            type: 'boolean',
+            title: 'Use Cache',
+            description: 'Whether or not to use the cache',
+            default: true,
+            field_kind: 'node_attribute',
+          },
+          image: {
+            allOf: [
+              {
+                $ref: '#/components/schemas/ImageField',
+              },
+            ],
+            description: 'The image to resize',
+            field_kind: 'input',
+            input: 'any',
+            orig_required: true,
+            ui_hidden: false,
+          },
+          width: {
+            type: 'integer',
+            exclusiveMinimum: 0,
+            title: 'Width',
+            description: 'The width to resize to (px)',
+            default: 512,
+            field_kind: 'input',
+            input: 'any',
+            orig_default: 512,
+            orig_required: false,
+            ui_hidden: false,
+          },
+          height: {
+            type: 'integer',
+            exclusiveMinimum: 0,
+            title: 'Height',
+            description: 'The height to resize to (px)',
+            default: 512,
+            field_kind: 'input',
+            input: 'any',
+            orig_default: 512,
+            orig_required: false,
+            ui_hidden: false,
+          },
+          resample_mode: {
+            type: 'string',
+            enum: ['nearest', 'box', 'bilinear', 'hamming', 'bicubic', 'lanczos'],
+            title: 'Resample Mode',
+            description: 'The resampling mode',
+            default: 'bicubic',
+            field_kind: 'input',
+            input: 'any',
+            orig_default: 'bicubic',
+            orig_required: false,
+            ui_hidden: false,
+          },
+          type: {
+            type: 'string',
+            enum: ['img_resize'],
+            const: 'img_resize',
+            title: 'type',
+            default: 'img_resize',
+            field_kind: 'node_attribute',
+          },
+        },
+        type: 'object',
+        required: ['type', 'id'],
+        title: 'Resize Image',
+        description: 'Resizes an image to specific dimensions',
+        category: 'image',
+        classification: 'stable',
+        node_pack: 'invokeai',
+        tags: ['image', 'resize'],
+        version: '1.2.2',
+        output: {
+          $ref: '#/components/schemas/ImageOutput',
+        },
+        class: 'invocation',
+      },
+      ImageField: {
+        description: 'An image primitive field',
+        properties: {
+          image_name: {
+            description: 'The name of the image',
+            title: 'Image Name',
+            type: 'string',
+          },
+        },
+        required: ['image_name'],
+        title: 'ImageField',
+        type: 'object',
+        class: 'output',
+      },
+      ImageOutput: {
+        description: 'Base class for nodes that output a single image',
+        properties: {
+          image: {
+            allOf: [
+              {
+                $ref: '#/components/schemas/ImageField',
+              },
+            ],
+            description: 'The output image',
+            field_kind: 'output',
+            ui_hidden: false,
+          },
+          width: {
+            description: 'The width of the image in pixels',
+            field_kind: 'output',
+            title: 'Width',
+            type: 'integer',
+            ui_hidden: false,
+          },
+          height: {
+            description: 'The height of the image in pixels',
+            field_kind: 'output',
+            title: 'Height',
+            type: 'integer',
+            ui_hidden: false,
+          },
+          type: {
+            const: 'image_output',
+            default: 'image_output',
+            enum: ['image_output'],
+            field_kind: 'node_attribute',
+            title: 'type',
+            type: 'string',
+          },
+        },
+        required: ['image', 'width', 'height', 'type', 'type'],
+        title: 'ImageOutput',
+        type: 'object',
+        class: 'output',
+      },
+      MetadataField: {
+        description:
+          'Pydantic model for metadata with custom root of type dict[str, Any].\nMetadata is stored without a strict schema.',
+        title: 'MetadataField',
+        type: 'object',
+        class: 'output',
+      },
+      BoardField: {
+        properties: {
+          board_id: {
+            type: 'string',
+            title: 'Board Id',
+            description: 'The id of the board',
+          },
+        },
+        type: 'object',
+        required: ['board_id'],
+        title: 'BoardField',
+        description: 'A board primitive field',
+      },
     },
   },
 } as OpenAPIV3_1.Document;
diff --git a/invokeai/frontend/web/src/features/nodes/store/util/validateConnection.test.ts b/invokeai/frontend/web/src/features/nodes/store/util/validateConnection.test.ts
index 5d10ef368b..cf05b4deb6 100644
--- a/invokeai/frontend/web/src/features/nodes/store/util/validateConnection.test.ts
+++ b/invokeai/frontend/web/src/features/nodes/store/util/validateConnection.test.ts
@@ -3,7 +3,7 @@ import { buildInvocationNode } from 'features/nodes/util/node/buildInvocationNod
 import { set } from 'lodash-es';
 import { describe, expect, it } from 'vitest';
 
-import { add, buildEdge, collect, main_model_loader, position, sub, templates } from './testUtils';
+import { add, buildEdge, collect, img_resize, main_model_loader, position, sub, templates } from './testUtils';
 import { buildAcceptResult, buildRejectResult, validateConnection } from './validateConnection';
 
 describe(validateConnection.name, () => {
@@ -146,4 +146,24 @@ describe(validateConnection.name, () => {
     const r = validateConnection(c, nodes, edges, templates, e1);
     expect(r).toEqual(buildAcceptResult());
   });
+
+  it('should reject connections between invalid types', () => {
+    const n1 = buildInvocationNode(position, add);
+    const n2 = buildInvocationNode(position, img_resize);
+    const nodes = [n1, n2];
+    const c = { source: n1.id, sourceHandle: 'value', target: n2.id, targetHandle: 'image' };
+    const r = validateConnection(c, nodes, [], templates, null);
+    expect(r).toEqual(buildRejectResult('nodes.fieldTypesMustMatch'));
+  });
+
+  it('should reject connections that would create cycles', () => {
+    const n1 = buildInvocationNode(position, add);
+    const n2 = buildInvocationNode(position, sub);
+    const nodes = [n1, n2];
+    const e1 = buildEdge(n1.id, 'value', n2.id, 'a');
+    const edges = [e1];
+    const c = { source: n2.id, sourceHandle: 'value', target: n1.id, targetHandle: 'a' };
+    const r = validateConnection(c, nodes, edges, templates, null);
+    expect(r).toEqual(buildRejectResult('nodes.connectionWouldCreateCycle'));
+  });
 });
diff --git a/invokeai/frontend/web/src/features/nodes/store/util/validateConnection.ts b/invokeai/frontend/web/src/features/nodes/store/util/validateConnection.ts
index d45a75ab9f..db8b7b737e 100644
--- a/invokeai/frontend/web/src/features/nodes/store/util/validateConnection.ts
+++ b/invokeai/frontend/web/src/features/nodes/store/util/validateConnection.ts
@@ -1,6 +1,8 @@
 import type { Templates } from 'features/nodes/store/types';
 import { areTypesEqual } from 'features/nodes/store/util/areTypesEqual';
 import { getCollectItemType } from 'features/nodes/store/util/getCollectItemType';
+import { getHasCycles } from 'features/nodes/store/util/getHasCycles';
+import { validateConnectionTypes } from 'features/nodes/store/util/validateConnectionTypes';
 import type { AnyNode } from 'features/nodes/types/invocation';
 import type { Connection as NullableConnection, Edge } from 'reactflow';
 import type { O } from 'ts-toolbelt';
@@ -36,6 +38,12 @@ const getEqualityPredicate =
     );
   };
 
+const getTargetEqualityPredicate =
+  (c: Connection) =>
+  (e: Edge): boolean => {
+    return e.target === c.target && e.targetHandle === c.targetHandle;
+  };
+
 export const buildAcceptResult = (): ValidateConnectionResult => ({ isValid: true });
 export const buildRejectResult = (messageTKey: string): ValidateConnectionResult => ({ isValid: false, messageTKey });
 
@@ -44,6 +52,12 @@ export const validateConnection: ValidateConnectionFunc = (c, nodes, edges, temp
     return buildRejectResult('nodes.cannotConnectToSelf');
   }
 
+  /**
+   * We may need to ignore an edge when validating a connection.
+   *
+   * For example, while an edge is being updated, it still exists in the array of edges. As we validate the new connection,
+   * the user experience should be that the edge is temporarily removed from the graph, so we need to ignore it.
+   */
   const filteredEdges = edges.filter((e) => e.id !== ignoreEdge?.id);
 
   if (filteredEdges.some(getEqualityPredicate(c))) {
@@ -96,14 +110,20 @@ export const validateConnection: ValidateConnectionFunc = (c, nodes, edges, temp
   }
 
   if (
-    edges.find((e) => {
-      return e.target === c.target && e.targetHandle === c.targetHandle;
-    }) &&
-    // except CollectionItem inputs can have multiples
+    filteredEdges.find(getTargetEqualityPredicate(c)) &&
+    // except CollectionItem inputs can have multiple input connections
     targetFieldTemplate.type.name !== 'CollectionItemField'
   ) {
     return buildRejectResult('nodes.inputMayOnlyHaveOneConnection');
   }
 
+  if (!validateConnectionTypes(sourceFieldTemplate.type, targetFieldTemplate.type)) {
+    return buildRejectResult('nodes.fieldTypesMustMatch');
+  }
+
+  if (getHasCycles(c.source, c.target, nodes, edges)) {
+    return buildRejectResult('nodes.connectionWouldCreateCycle');
+  }
+
   return buildAcceptResult();
 };