diff --git a/src/components/DataKeyPair.tsx b/src/components/DataKeyPair.tsx
index d38b678b..34606415 100644
--- a/src/components/DataKeyPair.tsx
+++ b/src/components/DataKeyPair.tsx
@@ -113,11 +113,8 @@ export const DataKeyPair: React.FC<DataKeyPairProps> = (props) => {
                 event.preventDefault()
                 try {
                   copy(
-                    JSON.stringify(
-                      typeof value === 'function' ? value.toString() : value,
-                      null,
-                      '  '
-                    )
+                    path,
+                    value
                   )
                 } catch (e) {
                   // in some case, this will throw error
diff --git a/src/hooks/useCopyToClipboard.ts b/src/hooks/useCopyToClipboard.ts
index 9bff7cf3..e72f1616 100644
--- a/src/hooks/useCopyToClipboard.ts
+++ b/src/hooks/useCopyToClipboard.ts
@@ -1,6 +1,9 @@
 import copyToClipboard from 'copy-to-clipboard'
 import { useCallback, useRef, useState } from 'react'
 
+import { useJsonViewerStore } from '../stores/JsonViewerStore'
+import type { JsonViewerOnCopy } from '../type'
+
 /**
  * useClipboard hook accepts one argument options in which copied status timeout duration is defined (defaults to 2000). Hook returns object with properties:
  * - copy – function to copy value to clipboard
@@ -19,19 +22,51 @@ export function useClipboard ({ timeout = 2000 } = {}) {
     copyTimeout.current = window.setTimeout(() => setCopied(false), timeout)
     setCopied(value)
   }, [timeout])
+  const onCopy = useJsonViewerStore(store => store.onCopy)
 
-  const copy = useCallback((valueToCopy: string) => {
-    if ('clipboard' in navigator) {
-      navigator.clipboard
-        .writeText(valueToCopy)
-        .then(() => handleCopyResult(true))
-        // When navigator.clipboard throws an error, fallback to copy-to-clipboard package
-        .catch(() => copyToClipboard(valueToCopy))
+  const copy = useCallback<JsonViewerOnCopy>((path, value: unknown) => {
+    if (typeof onCopy === 'function') {
+      try {
+        const result = onCopy(path, value)
+        if (result instanceof Promise) {
+          result.then(() => {
+            handleCopyResult(true)
+          }).catch((error) => {
+            console.error(
+              `error when copy ${path.length === 0
+                ? 'src'
+                : `src[${path.join(
+                  '.')}`
+              }]`, error)
+          })
+        } else {
+          handleCopyResult(true)
+        }
+      } catch (error) {
+        console.error(
+          `error when copy ${path.length === 0
+            ? 'src'
+            : `src[${path.join(
+              '.')}`
+          }]`, error)
+      }
     } else {
-      // fallback to copy-to-clipboard when navigator.clipboard is not available
-      copyToClipboard(valueToCopy)
+      const valueToCopy = JSON.stringify(
+        typeof value === 'function' ? value.toString() : value,
+        null,
+        '  '
+      )
+      if ('clipboard' in navigator) {
+        navigator.clipboard.writeText(valueToCopy)
+          .then(() => handleCopyResult(true))
+          // When navigator.clipboard throws an error, fallback to copy-to-clipboard package
+          .catch(() => copyToClipboard(valueToCopy))
+      } else {
+        // fallback to copy-to-clipboard when navigator.clipboard is not available
+        copyToClipboard(valueToCopy)
+      }
     }
-  }, [handleCopyResult])
+  }, [handleCopyResult, onCopy])
 
   const reset = useCallback(() => {
     setCopied(false)
diff --git a/src/index.tsx b/src/index.tsx
index af0b581e..84800160 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -56,6 +56,7 @@ const JsonViewerInner: React.FC<JsonViewerProps> = (props) => {
   useSetIfNotUndefinedEffect('rootName', props.rootName)
   useSetIfNotUndefinedEffect('displayDataTypes', props.displayDataTypes)
   useSetIfNotUndefinedEffect('displayObjectSize', props.displayObjectSize)
+  useSetIfNotUndefinedEffect('onCopy', props.onCopy)
   useEffect(() => {
     if (props.theme === 'light') {
       api.setState({
diff --git a/src/stores/JsonViewerStore.ts b/src/stores/JsonViewerStore.ts
index 7f22a009..08167113 100644
--- a/src/stores/JsonViewerStore.ts
+++ b/src/stores/JsonViewerStore.ts
@@ -3,7 +3,12 @@ import create from 'zustand'
 import createContext from 'zustand/context'
 import { combine } from 'zustand/middleware'
 
-import type { JsonViewerOnChange, JsonViewerProps, Path } from '..'
+import type {
+  JsonViewerOnChange,
+  JsonViewerOnCopy,
+  JsonViewerProps,
+  Path
+} from '..'
 import type { Colorspace } from '../theme/base16'
 import { lightColorspace } from '../theme/base16'
 import type { JsonViewerKeyRenderer } from '../type'
@@ -28,6 +33,7 @@ export type JsonViewerState<T = unknown> = {
   rootName: false | string
   value: T
   onChange: JsonViewerOnChange
+  onCopy: JsonViewerOnCopy | undefined
   keyRenderer: JsonViewerKeyRenderer
   displayObjectSize: boolean
 }
@@ -54,6 +60,7 @@ export const createJsonViewerStore = <T = unknown> (props: JsonViewerProps<T>) =
         maxDisplayLength: props.maxDisplayLength ?? 30,
         rootName: props.rootName ?? 'root',
         onChange: props.onChange ?? (() => {}),
+        onCopy: props.onCopy ?? undefined,
         keyRenderer: props.keyRenderer ?? DefaultKeyRenderer,
         editable: props.editable ?? false,
         defaultInspectDepth: props.defaultInspectDepth ?? 5,
diff --git a/src/type.ts b/src/type.ts
index af4d3fe4..5b868e88 100644
--- a/src/type.ts
+++ b/src/type.ts
@@ -5,10 +5,24 @@ import type { Colorspace } from './theme/base16'
 
 export type Path = (string | number)[]
 
+/**
+ * @param path path to the target value
+ * @param oldValue
+ * @param newValue
+ */
 export type JsonViewerOnChange = <U = unknown>(
-  path: (string | number)[], oldValue: U,
+  path: Path, oldValue: U,
   newValue: U /*, type: ChangeType */) => void
 
+/**
+ *  @param path path to the target value
+ *  @param value
+ */
+export type JsonViewerOnCopy = <U = unknown>(
+  path: Path,
+  value: U
+) => unknown | Promise<unknown>
+
 export interface DataItemProps<ValueType = unknown> {
   inspect: boolean
   setInspect: Dispatch<SetStateAction<boolean>>
@@ -33,7 +47,7 @@ export type DataType<ValueType = unknown> = {
 }
 
 export interface JsonViewerKeyRenderer extends React.FC<DataItemProps> {
-  when(props: DataItemProps): boolean
+  when (props: DataItemProps): boolean
 }
 
 export type JsonViewerTheme = 'light' | 'dark' | 'auto' | Colorspace
@@ -59,13 +73,8 @@ export type JsonViewerProps<T = unknown> = {
    */
   keyRenderer?: JsonViewerKeyRenderer
   valueTypes?: DataType<any>[]
-  /**
-   *
-   * @param path path to the target value
-   * @param oldValue
-   * @param newValue
-   */
-  onChange?: <U>(path: Path, oldValue: U, newValue: U) => void
+  onChange?: JsonViewerOnChange
+  onCopy?: JsonViewerOnCopy
   /**
    * Whether enable clipboard feature.
    *