diff --git a/invokeai/frontend/web/src/app/selectors/readinessSelector.ts b/invokeai/frontend/web/src/common/hooks/useIsReadyToInvoke.ts
similarity index 89%
rename from invokeai/frontend/web/src/app/selectors/readinessSelector.ts
rename to invokeai/frontend/web/src/common/hooks/useIsReadyToInvoke.ts
index 2b77fe9f47..7204205216 100644
--- a/invokeai/frontend/web/src/app/selectors/readinessSelector.ts
+++ b/invokeai/frontend/web/src/common/hooks/useIsReadyToInvoke.ts
@@ -1,12 +1,12 @@
 import { createSelector } from '@reduxjs/toolkit';
+import { useAppSelector } from 'app/store/storeHooks';
 import { defaultSelectorOptions } from 'app/store/util/defaultMemoizeOptions';
 import { validateSeedWeights } from 'common/util/seedWeightPairs';
 import { generationSelector } from 'features/parameters/store/generationSelectors';
 import { systemSelector } from 'features/system/store/systemSelectors';
 import { activeTabNameSelector } from 'features/ui/store/uiSelectors';
-import { isEqual } from 'lodash-es';
 
-export const readinessSelector = createSelector(
+const readinessSelector = createSelector(
   [generationSelector, systemSelector, activeTabNameSelector],
   (generation, system, activeTabName) => {
     const {
@@ -60,3 +60,8 @@ export const readinessSelector = createSelector(
   },
   defaultSelectorOptions
 );
+
+export const useIsReadyToInvoke = () => {
+  const { isReady } = useAppSelector(readinessSelector);
+  return isReady;
+};
diff --git a/invokeai/frontend/web/src/features/controlNet/components/ControlNet.tsx b/invokeai/frontend/web/src/features/controlNet/components/ControlNet.tsx
index b9b8e77fcc..6095e5e956 100644
--- a/invokeai/frontend/web/src/features/controlNet/components/ControlNet.tsx
+++ b/invokeai/frontend/web/src/features/controlNet/components/ControlNet.tsx
@@ -1,7 +1,5 @@
 import { memo, useCallback } from 'react';
-import { RequiredControlNetProcessorNode } from '../store/types';
 import { ImageDTO } from 'services/api';
-import CannyProcessor from './processors/CannyProcessor';
 import {
   ControlNet,
   controlNetImageChanged,
@@ -23,11 +21,11 @@ import {
 } from '@chakra-ui/react';
 import IAISelectableImage from './parameters/IAISelectableImage';
 import IAIButton from 'common/components/IAIButton';
-import { controlNetImageProcessed } from '../store/actions';
 import { FaUndo } from 'react-icons/fa';
-import HedProcessor from './processors/HedProcessor';
 import ParamControlNetProcessorSelect from './parameters/ParamControlNetProcessorSelect';
-import ProcessorComponent from './ProcessorComponent';
+import ControlNetProcessorComponent from './ControlNetProcessorComponent';
+import { useIsApplicationReady } from 'features/system/hooks/useIsApplicationReady';
+import ControlNetPreprocessButton from './ControlNetPreprocessButton';
 
 type ControlNetProps = {
   controlNet: ControlNet;
@@ -47,6 +45,7 @@ const ControlNet = (props: ControlNetProps) => {
     processorNode,
   } = props.controlNet;
   const dispatch = useAppDispatch();
+  const isReady = useIsApplicationReady();
 
   const handleControlImageChanged = useCallback(
     (controlImage: ImageDTO) => {
@@ -55,14 +54,6 @@ const ControlNet = (props: ControlNetProps) => {
     [controlNetId, dispatch]
   );
 
-  const handleProcess = useCallback(() => {
-    dispatch(
-      controlNetImageProcessed({
-        controlNetId,
-      })
-    );
-  }, [controlNetId, dispatch]);
-
   const handleReset = useCallback(() => {
     dispatch(
       controlNetProcessedImageChanged({
@@ -128,17 +119,11 @@ const ControlNet = (props: ControlNetProps) => {
               controlNetId={controlNetId}
               processorNode={processorNode}
             />
-            <ProcessorComponent
+            <ControlNetProcessorComponent
               controlNetId={controlNetId}
               processorNode={processorNode}
             />
-            <IAIButton
-              size="sm"
-              onClick={handleProcess}
-              isDisabled={Boolean(!controlImage)}
-            >
-              Preprocess
-            </IAIButton>
+            <ControlNetPreprocessButton controlNet={props.controlNet} />
             <IAIButton
               size="sm"
               leftIcon={<FaUndo />}
diff --git a/invokeai/frontend/web/src/features/controlNet/components/ControlNetPreprocessButton.tsx b/invokeai/frontend/web/src/features/controlNet/components/ControlNetPreprocessButton.tsx
new file mode 100644
index 0000000000..94b1f86501
--- /dev/null
+++ b/invokeai/frontend/web/src/features/controlNet/components/ControlNetPreprocessButton.tsx
@@ -0,0 +1,36 @@
+import IAIButton from 'common/components/IAIButton';
+import { memo, useCallback } from 'react';
+import { ControlNet } from '../store/controlNetSlice';
+import { useAppDispatch } from 'app/store/storeHooks';
+import { controlNetImageProcessed } from '../store/actions';
+import { useIsReadyToInvoke } from 'common/hooks/useIsReadyToInvoke';
+
+type Props = {
+  controlNet: ControlNet;
+};
+
+const ControlNetPreprocessButton = (props: Props) => {
+  const { controlNetId, controlImage } = props.controlNet;
+  const dispatch = useAppDispatch();
+  const isReady = useIsReadyToInvoke();
+
+  const handleProcess = useCallback(() => {
+    dispatch(
+      controlNetImageProcessed({
+        controlNetId,
+      })
+    );
+  }, [controlNetId, dispatch]);
+
+  return (
+    <IAIButton
+      size="sm"
+      onClick={handleProcess}
+      isDisabled={Boolean(!controlImage) || !isReady}
+    >
+      Preprocess
+    </IAIButton>
+  );
+};
+
+export default memo(ControlNetPreprocessButton);
diff --git a/invokeai/frontend/web/src/features/controlNet/components/ProcessorComponent.tsx b/invokeai/frontend/web/src/features/controlNet/components/ControlNetProcessorComponent.tsx
similarity index 96%
rename from invokeai/frontend/web/src/features/controlNet/components/ProcessorComponent.tsx
rename to invokeai/frontend/web/src/features/controlNet/components/ControlNetProcessorComponent.tsx
index 246aea70c7..4649f89b35 100644
--- a/invokeai/frontend/web/src/features/controlNet/components/ProcessorComponent.tsx
+++ b/invokeai/frontend/web/src/features/controlNet/components/ControlNetProcessorComponent.tsx
@@ -18,7 +18,7 @@ export type ControlNetProcessorProps = {
   processorNode: RequiredControlNetProcessorNode;
 };
 
-const ProcessorComponent = (props: ControlNetProcessorProps) => {
+const ControlNetProcessorComponent = (props: ControlNetProcessorProps) => {
   const { controlNetId, processorNode } = props;
   if (processorNode.type === 'canny_image_processor') {
     return (
@@ -128,4 +128,4 @@ const ProcessorComponent = (props: ControlNetProcessorProps) => {
   return null;
 };
 
-export default memo(ProcessorComponent);
+export default memo(ControlNetProcessorComponent);
diff --git a/invokeai/frontend/web/src/features/controlNet/components/processors/common/ControlNetProcessorButtons.tsx b/invokeai/frontend/web/src/features/controlNet/components/processors/common/ControlNetProcessorButtons.tsx
deleted file mode 100644
index a051990f67..0000000000
--- a/invokeai/frontend/web/src/features/controlNet/components/processors/common/ControlNetProcessorButtons.tsx
+++ /dev/null
@@ -1,28 +0,0 @@
-import { Flex } from '@chakra-ui/react';
-import { memo } from 'react';
-import { FaUndo } from 'react-icons/fa';
-import IAIButton from 'common/components/IAIButton';
-
-type ControlNetProcessorButtonsProps = {
-  handleProcess: () => void;
-  isProcessDisabled: boolean;
-  handleReset: () => void;
-  isResetDisabled: boolean;
-};
-
-const ControlNetProcessorButtons = (props: ControlNetProcessorButtonsProps) => {
-  const { handleProcess, isProcessDisabled, handleReset, isResetDisabled } =
-    props;
-  return (
-    <Flex
-      sx={{
-        gap: 4,
-        w: 'full',
-        alignItems: 'center',
-        justifyContent: 'stretch',
-      }}
-    ></Flex>
-  );
-};
-
-export default memo(ControlNetProcessorButtons);
diff --git a/invokeai/frontend/web/src/features/parameters/components/Parameters/Core/ParamPositiveConditioning.tsx b/invokeai/frontend/web/src/features/parameters/components/Parameters/Core/ParamPositiveConditioning.tsx
index 365bade0aa..0980b84ab3 100644
--- a/invokeai/frontend/web/src/features/parameters/components/Parameters/Core/ParamPositiveConditioning.tsx
+++ b/invokeai/frontend/web/src/features/parameters/components/Parameters/Core/ParamPositiveConditioning.tsx
@@ -4,7 +4,6 @@ import { useAppDispatch, useAppSelector } from 'app/store/storeHooks';
 import { ChangeEvent, KeyboardEvent, useCallback, useRef } from 'react';
 
 import { createSelector } from '@reduxjs/toolkit';
-import { readinessSelector } from 'app/selectors/readinessSelector';
 import {
   GenerationState,
   clampSymmetrySteps,
@@ -17,6 +16,7 @@ import { useHotkeys } from 'react-hotkeys-hook';
 import { useTranslation } from 'react-i18next';
 import { userInvoked } from 'app/store/actions';
 import IAITextarea from 'common/components/IAITextarea';
+import { useIsReadyToInvoke } from 'common/hooks/useIsReadyToInvoke';
 
 const promptInputSelector = createSelector(
   [(state: RootState) => state.generation, activeTabNameSelector],
@@ -39,7 +39,7 @@ const promptInputSelector = createSelector(
 const ParamPositiveConditioning = () => {
   const dispatch = useAppDispatch();
   const { prompt, activeTabName } = useAppSelector(promptInputSelector);
-  const { isReady } = useAppSelector(readinessSelector);
+  const isReady = useIsReadyToInvoke();
 
   const promptRef = useRef<HTMLTextAreaElement>(null);
 
diff --git a/invokeai/frontend/web/src/features/parameters/components/ProcessButtons/InvokeButton.tsx b/invokeai/frontend/web/src/features/parameters/components/ProcessButtons/InvokeButton.tsx
index 4ada615628..449280aa03 100644
--- a/invokeai/frontend/web/src/features/parameters/components/ProcessButtons/InvokeButton.tsx
+++ b/invokeai/frontend/web/src/features/parameters/components/ProcessButtons/InvokeButton.tsx
@@ -1,11 +1,11 @@
 import { Box } from '@chakra-ui/react';
-import { readinessSelector } from 'app/selectors/readinessSelector';
 import { userInvoked } from 'app/store/actions';
 import { useAppDispatch, useAppSelector } from 'app/store/storeHooks';
 import IAIButton, { IAIButtonProps } from 'common/components/IAIButton';
 import IAIIconButton, {
   IAIIconButtonProps,
 } from 'common/components/IAIIconButton';
+import { useIsReadyToInvoke } from 'common/hooks/useIsReadyToInvoke';
 import { clampSymmetrySteps } from 'features/parameters/store/generationSlice';
 import ProgressBar from 'features/system/components/ProgressBar';
 import { activeTabNameSelector } from 'features/ui/store/uiSelectors';
@@ -22,7 +22,7 @@ interface InvokeButton
 export default function InvokeButton(props: InvokeButton) {
   const { iconButton = false, ...rest } = props;
   const dispatch = useAppDispatch();
-  const { isReady } = useAppSelector(readinessSelector);
+  const isReady = useIsReadyToInvoke();
   const activeTabName = useAppSelector(activeTabNameSelector);
 
   const handleInvoke = useCallback(() => {
diff --git a/invokeai/frontend/web/src/features/system/hooks/useIsApplicationReady.ts b/invokeai/frontend/web/src/features/system/hooks/useIsApplicationReady.ts
index 6e62c3642b..193420e29c 100644
--- a/invokeai/frontend/web/src/features/system/hooks/useIsApplicationReady.ts
+++ b/invokeai/frontend/web/src/features/system/hooks/useIsApplicationReady.ts
@@ -19,6 +19,9 @@ const isApplicationReadySelector = createSelector(
   }
 );
 
+/**
+ * Checks if the application is ready to be used, i.e. if the initial startup process is finished.
+ */
 export const useIsApplicationReady = () => {
   const { disabledTabs, wereModelsReceived, wasSchemaParsed } = useAppSelector(
     isApplicationReadySelector