diff --git a/web/app/components/base/features/types.ts b/web/app/components/base/features/types.ts
index 56bd7829ad..06c55d0cb5 100644
--- a/web/app/components/base/features/types.ts
+++ b/web/app/components/base/features/types.ts
@@ -29,6 +29,11 @@ export type SensitiveWordAvoidance = EnabledOrDisabled & {
   config?: any
 }
 
+export enum PreviewMode {
+  NewPage = 'new_page',
+  CurrentPage = 'current_page',
+}
+
 export type FileUpload = {
   image?: EnabledOrDisabled & {
     detail?: Resolution
@@ -56,6 +61,10 @@ export type FileUpload = {
   allowed_file_upload_methods?: TransferMethod[]
   number_limits?: number
   fileUploadConfig?: FileUploadConfigResponse
+  preview_config?: {
+    mode?: PreviewMode
+    file_type_list?: string[]
+  }
 } & EnabledOrDisabled
 
 export type AnnotationReplyConfig = {
diff --git a/web/app/components/base/file-uploader/file-uploader-in-attachment/file-item.tsx b/web/app/components/base/file-uploader/file-uploader-in-attachment/file-item.tsx
index 8e3e47c42c..3430f56c52 100644
--- a/web/app/components/base/file-uploader/file-uploader-in-attachment/file-item.tsx
+++ b/web/app/components/base/file-uploader/file-uploader-in-attachment/file-item.tsx
@@ -23,6 +23,7 @@ import cn from '@/utils/classnames'
 import { ReplayLine } from '@/app/components/base/icons/src/vender/other'
 import { SupportUploadFileTypes } from '@/app/components/workflow/types'
 import ImagePreview from '@/app/components/base/image-uploader/image-preview'
+import { PreviewMode } from '@/app/components/base/features/types'
 
 type FileInAttachmentItemProps = {
   file: FileEntity
@@ -31,6 +32,7 @@ type FileInAttachmentItemProps = {
   onRemove?: (fileId: string) => void
   onReUpload?: (fileId: string) => void
   canPreview?: boolean
+  previewMode?: PreviewMode
 }
 const FileInAttachmentItem = ({
   file,
@@ -39,6 +41,7 @@ const FileInAttachmentItem = ({
   onRemove,
   onReUpload,
   canPreview,
+  previewMode = PreviewMode.CurrentPage,
 }: FileInAttachmentItemProps) => {
   const { id, name, type, progress, supportFileType, base64Url, url, isRemote } = file
   const ext = getFileExtension(name, type, isRemote)
@@ -49,7 +52,13 @@ const FileInAttachmentItem = ({
       <div className={cn(
         'flex h-12 items-center rounded-lg border-[0.5px] border-components-panel-border bg-components-panel-on-panel-item-bg pr-3 shadow-xs',
         progress === -1 && 'border-state-destructive-border bg-state-destructive-hover',
-      )}>
+        canPreview && previewMode === PreviewMode.NewPage && 'cursor-pointer',
+      )}
+        onClick={() => {
+          if (canPreview && previewMode === PreviewMode.NewPage)
+            window.open(url || base64Url || '', '_blank')
+        }}
+      >
         <div className='flex h-12 w-12 items-center justify-center'>
           {
             isImageFile && (
diff --git a/web/app/components/base/file-uploader/file-uploader-in-attachment/index.tsx b/web/app/components/base/file-uploader/file-uploader-in-attachment/index.tsx
index 5090b945e3..87a5411eab 100644
--- a/web/app/components/base/file-uploader/file-uploader-in-attachment/index.tsx
+++ b/web/app/components/base/file-uploader/file-uploader-in-attachment/index.tsx
@@ -106,6 +106,8 @@ const FileUploaderInAttachment = ({
               showDownloadAction={false}
               onRemove={() => handleRemoveFile(file.id)}
               onReUpload={() => handleReUploadFile(file.id)}
+              canPreview={fileConfig.preview_config?.file_type_list?.includes(file.type)}
+              previewMode={fileConfig.preview_config?.mode}
             />
           ))
         }
diff --git a/web/app/components/base/segmented-control/index.tsx b/web/app/components/base/segmented-control/index.tsx
index e81886dec9..6c2d7fab0e 100644
--- a/web/app/components/base/segmented-control/index.tsx
+++ b/web/app/components/base/segmented-control/index.tsx
@@ -20,6 +20,7 @@ type SegmentedControlProps<T extends string | number | symbol> = {
   onChange: (value: T) => void
   className?: string
   activeClassName?: string
+  btnClassName?: string
 }
 
 const SegmentedControlVariants = cva(
@@ -90,6 +91,7 @@ export const SegmentedControl = <T extends string | number | symbol>({
   padding,
   activeState,
   activeClassName,
+  btnClassName,
 }: SegmentedControlProps<T>
   & VariantProps<typeof SegmentedControlVariants>
   & VariantProps<typeof SegmentedControlItemVariants>
@@ -115,6 +117,7 @@ export const SegmentedControl = <T extends string | number | symbol>({
               SegmentedControlItemVariants({ size, activeState: isSelected ? activeState : 'default' }),
               isSelected && activeClassName,
               disabled && 'disabled',
+              btnClassName,
             )}
             onClick={() => {
               if (!isSelected)
diff --git a/web/app/components/base/textarea/index.tsx b/web/app/components/base/textarea/index.tsx
index 43cc33d62e..8a1912950b 100644
--- a/web/app/components/base/textarea/index.tsx
+++ b/web/app/components/base/textarea/index.tsx
@@ -24,12 +24,16 @@ export type TextareaProps = {
   disabled?: boolean
   destructive?: boolean
   styleCss?: CSSProperties
+  onFocus?: () => void
+  onBlur?: () => void
 } & React.TextareaHTMLAttributes<HTMLTextAreaElement> & VariantProps<typeof textareaVariants>
 
 const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
-  ({ className, value, onChange, disabled, size, destructive, styleCss, ...props }, ref) => {
+  ({ className, value, onChange, disabled, size, destructive, styleCss, onFocus, onBlur, ...props }, ref) => {
     return (
       <textarea
+        onFocus={onFocus}
+        onBlur={onBlur}
         ref={ref}
         style={styleCss}
         className={cn(
diff --git a/web/app/components/rag-pipeline/components/chunk-card-list/index.tsx b/web/app/components/rag-pipeline/components/chunk-card-list/index.tsx
new file mode 100644
index 0000000000..92ae981cf2
--- /dev/null
+++ b/web/app/components/rag-pipeline/components/chunk-card-list/index.tsx
@@ -0,0 +1,141 @@
+import { useMemo } from 'react'
+import SegmentIndexTag from '@/app/components/datasets/documents/detail/completed/common/segment-index-tag'
+import Dot from '@/app/components/datasets/documents/detail/completed/common/dot'
+import { PreviewSlice } from '@/app/components/datasets/formatted-text/flavours/preview-slice'
+import { useTranslation } from 'react-i18next'
+import { formatNumber } from '@/utils/format'
+
+enum QAItemType {
+    Question = 'question',
+    Answer = 'answer',
+}
+
+type QAItemProps = {
+    type: QAItemType
+    text: string
+}
+
+const QAItem = (props: QAItemProps) => {
+    const { type, text } = props
+    return <div className="inline-flex items-start justify-start gap-1 self-stretch">
+        <div className="w-4 text-[13px] font-medium leading-5 text-text-tertiary">{type === QAItemType.Question ? 'Q' : 'A'}</div>
+        <div className="body-md-regular flex-1 text-text-secondary">{text}</div>
+    </div>
+}
+
+enum ChunkType {
+    General = 'genaral',
+    Paragraph = 'paragraph',
+    FullDoc = 'full-doc',
+    QA = 'qa',
+}
+
+type ChunkCardProps = {
+    type: ChunkType
+    content: string | string[] | QAChunk
+    positionId?: string | number
+    wordCount: number
+}
+
+const ChunkCard = (props: ChunkCardProps) => {
+    const { type, content, positionId, wordCount } = props
+    const { t } = useTranslation()
+
+    const renderContent = () => {
+        // ChunkType.Paragraph && ChunkType.FullDoc
+        if (Array.isArray(content)) {
+            return content.map((child, index) => {
+                const indexForLabel = index + 1
+                return (
+                    <PreviewSlice
+                        key={child}
+                        label={`C-${indexForLabel}`}
+                        text={child}
+                        tooltip={`Child-chunk-${indexForLabel} · ${child.length} Characters`}
+                        labelInnerClassName='text-[10px] font-semibold align-bottom leading-7'
+                        dividerClassName='leading-7'
+                    />
+                )
+            })
+        }
+
+        // ChunkType.QA
+        if (typeof content === 'object') {
+            return <div className="flex flex-col gap-2">
+                <QAItem type={QAItemType.Question} text={(content as QAChunk).question} />
+                <QAItem type={QAItemType.Answer} text={(content as QAChunk).answer} />
+            </div>
+        }
+
+        // ChunkType.General
+        return content
+    }
+
+    return <div className="inline-flex flex-col gap-1 self-stretch rounded-lg bg-components-panel-bg px-3 py-2.5">
+        {type !== ChunkType.FullDoc && <div className="inline-flex items-center justify-start gap-2">
+            <SegmentIndexTag
+                positionId={positionId}
+                labelPrefix={type === ChunkType.Paragraph ? 'Parent-Chunk' : 'Chunk'}
+            />
+            <Dot />
+            <div className='system-xs-medium text-text-tertiary'>{formatNumber(wordCount)} {t('datasetDocuments.segment.characters', { count: wordCount })}</div>
+        </div>}
+        <div className="body-md-regular text-text-secondary">{renderContent()}</div>
+    </div>
+}
+
+export type ChunkInfo = {
+    general_chunks?: string[]
+    parent_child_chunks?: ParentChildChunk[]
+    parent_mode?: string
+    qa_chunks?: QAChunk[]
+}
+
+type ParentChildChunk = {
+    child_contents: string[]
+    parent_content: string
+    parent_mode: string
+}
+
+type QAChunk = {
+    question: string
+    answer: string
+}
+
+type ChunkCardListProps = {
+    chunkInfo: ChunkInfo
+}
+
+export const ChunkCardList = (props: ChunkCardListProps) => {
+    const { chunkInfo } = props
+
+    const chunkType = useMemo(() => {
+        if (chunkInfo?.general_chunks)
+            return ChunkType.General
+
+        if (chunkInfo?.parent_child_chunks)
+            return chunkInfo.parent_mode as ChunkType
+
+        return ChunkType.QA
+    }, [chunkInfo])
+
+    return <div className='flex grow flex-col gap-1'>
+        {(chunkInfo.general_chunks ?? chunkInfo.parent_child_chunks ?? chunkInfo?.qa_chunks ?? []).map((seg: string | ParentChildChunk | QAChunk, index: number) => {
+            const isParentChildMode = [ChunkType.Paragraph, ChunkType.FullDoc].includes(chunkType!)
+            let wordCount = 0
+            if (isParentChildMode)
+                wordCount = (seg as ParentChildChunk)?.parent_content?.length
+            else if (typeof seg === 'string')
+                wordCount = seg.length
+            else
+                wordCount = (seg as QAChunk)?.question?.length + (seg as QAChunk)?.answer?.length
+
+            return <ChunkCard
+                type={chunkType}
+                content={isParentChildMode ? (seg as ParentChildChunk).child_contents : (seg as string | QAChunk)}
+                wordCount={wordCount}
+                positionId={index + 1}
+            />
+        })}
+    </div>
+}
diff --git a/web/app/components/workflow/nodes/llm/components/json-schema-config-modal/code-editor.tsx b/web/app/components/workflow/nodes/llm/components/json-schema-config-modal/code-editor.tsx
index 920757c6a6..e7bcb6f20d 100644
--- a/web/app/components/workflow/nodes/llm/components/json-schema-config-modal/code-editor.tsx
+++ b/web/app/components/workflow/nodes/llm/components/json-schema-config-modal/code-editor.tsx
@@ -15,6 +15,8 @@ type CodeEditorProps = {
   editorWrapperClassName?: string
   readOnly?: boolean
   hideTopMenu?: boolean
+  onFocus?: () => void
+  onBlur?: () => void
 } & React.HTMLAttributes<HTMLDivElement>
 
 const CodeEditor: FC<CodeEditorProps> = ({
@@ -25,6 +27,8 @@ const CodeEditor: FC<CodeEditorProps> = ({
   readOnly = false,
   hideTopMenu = false,
   className,
+  onFocus,
+  onBlur,
 }) => {
   const { t } = useTranslation()
   const { theme } = useTheme()
@@ -45,6 +49,14 @@ const CodeEditor: FC<CodeEditorProps> = ({
   const handleEditorDidMount = useCallback((editor: any, monaco: any) => {
     editorRef.current = editor
     monacoRef.current = monaco
+
+    editor.onDidFocusEditorText(() => {
+      onFocus?.()
+    })
+    editor.onDidBlurEditorText(() => {
+      onBlur?.()
+    })
+
     monaco.editor.defineTheme('light-theme', {
       base: 'vs',
       inherit: true,
diff --git a/web/app/components/workflow/nodes/llm/components/json-schema-config-modal/schema-editor.tsx b/web/app/components/workflow/nodes/llm/components/json-schema-config-modal/schema-editor.tsx
index ee3083c4e6..60a351f61b 100644
--- a/web/app/components/workflow/nodes/llm/components/json-schema-config-modal/schema-editor.tsx
+++ b/web/app/components/workflow/nodes/llm/components/json-schema-config-modal/schema-editor.tsx
@@ -8,6 +8,8 @@ type SchemaEditorProps = {
   hideTopMenu?: boolean
   className?: string
   readonly?: boolean
+  onFocus?: () => void
+  onBlur?: () => void
 }
 
 const SchemaEditor: FC<SchemaEditorProps> = ({
@@ -16,6 +18,8 @@ const SchemaEditor: FC<SchemaEditorProps> = ({
   hideTopMenu,
   className,
   readonly = false,
+  onFocus,
+  onBlur,
 }) => {
   return (
     <CodeEditor
@@ -25,6 +29,8 @@ const SchemaEditor: FC<SchemaEditorProps> = ({
       value={schema}
       onUpdate={onUpdate}
       hideTopMenu={hideTopMenu}
+      onFocus={onFocus}
+      onBlur={onBlur}
     />
   )
 }
diff --git a/web/app/components/workflow/variable-inspect/value-content.tsx b/web/app/components/workflow/variable-inspect/value-content.tsx
index dc67945c17..87673cea6f 100644
--- a/web/app/components/workflow/variable-inspect/value-content.tsx
+++ b/web/app/components/workflow/variable-inspect/value-content.tsx
@@ -1,6 +1,9 @@
-import { useEffect, useRef, useState } from 'react'
+import { useEffect, useMemo, useRef, useState } from 'react'
+import { useTranslation } from 'react-i18next'
 import { useDebounceFn } from 'ahooks'
+import { RiBracesLine, RiEyeLine } from '@remixicon/react'
 import Textarea from '@/app/components/base/textarea'
+import { Markdown } from '@/app/components/base/markdown'
 import SchemaEditor from '@/app/components/workflow/nodes/llm/components/json-schema-config-modal/schema-editor'
 import { FileUploaderInAttachmentWrapper } from '@/app/components/base/file-uploader'
 import ErrorMessage from '@/app/components/workflow/nodes/llm/components/json-schema-config-modal/error-message'
@@ -13,6 +16,7 @@ import {
   validateJSONSchema,
 } from '@/app/components/workflow/variable-inspect/utils'
 import { getProcessedFiles, getProcessedFilesFromResponse } from '@/app/components/base/file-uploader/utils'
+import { SegmentedControl } from '@/app/components/base/segmented-control'
 import { JSON_SCHEMA_MAX_DEPTH } from '@/config'
 import { TransferMethod } from '@/types/app'
 import { FILE_EXTS } from '@/app/components/base/prompt-editor/constants'
@@ -21,6 +25,84 @@ import type { VarInInspect } from '@/types/workflow'
 import { VarInInspectType } from '@/types/workflow'
 import cn from '@/utils/classnames'
 import { useStore } from '@/app/components/workflow/store'
+import { ChunkCardList, type ChunkInfo } from '@/app/components/rag-pipeline/components/chunk-card-list'
+import { PreviewMode } from '../../base/features/types'
+
+enum ViewMode {
+  Code = 'code',
+  Preview = 'preview',
+}
+
+enum ContentType {
+  Markdown = 'markdown',
+  Chunks = 'chunks',
+}
+
+type DisplayContentProps = {
+  type: ContentType
+  mdString?: string
+  jsonString?: string
+  readonly: boolean
+  handleTextChange?: (value: string) => void
+  handleEditorChange?: (value: string) => void
+}
+
+const DisplayContent = (props: DisplayContentProps) => {
+  const { type, mdString, jsonString, readonly, handleTextChange, handleEditorChange } = props
+  const [viewMode, setViewMode] = useState<ViewMode>(ViewMode.Code)
+  const [isFocused, setIsFocused] = useState(false)
+  const { t } = useTranslation()
+
+  return (
+    <div className={cn('flex h-full flex-col rounded-[10px] bg-components-input-bg-normal', isFocused && 'bg-components-input-bg-active outline outline-1 outline-components-input-border-active')}>
+      <div className='flex shrink-0 items-center justify-between p-1'>
+        <div className='system-xs-semibold-uppercase flex items-center px-2 py-0.5 text-text-secondary'>
+          {type.toUpperCase()}
+        </div>
+        <SegmentedControl
+          options={[
+            { value: ViewMode.Code, text: t('workflow.nodes.templateTransform.code'), Icon: RiBracesLine },
+            { value: ViewMode.Preview, text: t('workflow.common.preview'), Icon: RiEyeLine },
+          ]}
+          value={viewMode}
+          onChange={setViewMode}
+          size='small'
+          padding='with'
+          activeClassName='!text-text-accent-light-mode-only'
+          btnClassName='!pl-1.5 !pr-0.5 gap-[3px]'
+        />
+      </div>
+      <div className='flex flex-1 overflow-auto rounded-b-[10px] pb-1 pl-3 pr-1'>
+        {viewMode === ViewMode.Code && (
+          type === ContentType.Markdown
+            ? <Textarea
+              readOnly={readonly}
+              disabled={readonly}
+              className='h-full border-none bg-transparent p-0 text-text-secondary hover:bg-transparent focus:bg-transparent focus:shadow-none'
+              value={mdString as any}
+              onChange={e => handleTextChange?.(e.target.value)}
+              onFocus={() => setIsFocused(true)}
+              onBlur={() => setIsFocused(false)}
+            />
+            : <SchemaEditor
+              readonly={readonly}
+              className='overflow-y-auto bg-transparent'
+              hideTopMenu
+              schema={jsonString!}
+              onUpdate={handleEditorChange!}
+              onFocus={() => setIsFocused(true)}
+              onBlur={() => setIsFocused(false)}
+            />
+        )}
+        {viewMode === ViewMode.Preview && (
+          type === ContentType.Markdown
+            ? <Markdown className='grow overflow-auto rounded-lg !bg-white px-4 py-3' content={(mdString ?? '') as string} />
+            : <ChunkCardList chunkInfo={JSON.parse(jsonString!) as ChunkInfo} />
+        )}
+      </div>
+    </div>
+  )
+}
 
 type Props = {
   currentVar: VarInInspect
@@ -42,6 +124,13 @@ const ValueContent = ({
   const JSONEditorDisabled = currentVar.value_type === 'array[any]'
   const fileUploadConfig = useStore(s => s.fileUploadConfig)
 
+  const hasChunks = useMemo(() => {
+    return currentVar.value_type === 'object'
+      && currentVar.value
+      && typeof currentVar.value === 'object'
+      && ['parent_child_chunks', 'general_chunks', 'qa_chunks'].some(key => key in currentVar.value)
+  }, [currentVar.value_type, currentVar.value])
+
   const formatFileValue = (value: VarInInspect) => {
     if (value.value_type === 'file')
       return value.value ? getProcessedFilesFromResponse([value.value]) : []
@@ -72,7 +161,6 @@ const ValueContent = ({
 
     if (showFileEditor)
       setFileValue(formatFileValue(currentVar))
-  // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [currentVar.id, currentVar.value])
 
   const handleTextChange = (value: string) => {
@@ -170,7 +258,14 @@ const ValueContent = ({
     >
       <div className={cn('grow')} style={{ height: `${editorHeight}px` }}>
         {showTextEditor && (
-          <Textarea
+          currentVar.value_type === 'string' ? (
+            <DisplayContent
+              type={ContentType.Markdown}
+              mdString={value as any}
+              readonly={textEditorDisabled}
+              handleTextChange={handleTextChange}
+            />
+          ) : <Textarea
             readOnly={textEditorDisabled}
             disabled={textEditorDisabled}
             className='h-full'
@@ -179,13 +274,20 @@ const ValueContent = ({
           />
         )}
         {showJSONEditor && (
-          <SchemaEditor
-            readonly={JSONEditorDisabled}
-            className='overflow-y-auto'
-            hideTopMenu
-            schema={json}
-            onUpdate={handleEditorChange}
-          />
+          hasChunks
+            ? <DisplayContent
+              type={ContentType.Chunks}
+              jsonString={json ?? '{}'}
+              readonly={JSONEditorDisabled}
+              handleEditorChange={handleEditorChange}
+            />
+            : <SchemaEditor
+              readonly={JSONEditorDisabled}
+              className='overflow-y-auto'
+              hideTopMenu
+              schema={json}
+              onUpdate={handleEditorChange}
+            />
         )}
         {showFileEditor && (
           <div className='max-w-[460px]'>
@@ -208,6 +310,10 @@ const ValueContent = ({
                 allowed_file_upload_methods: [TransferMethod.local_file, TransferMethod.remote_url],
                 number_limits: currentVar.value_type === 'file' ? 1 : fileUploadConfig?.workflow_file_upload_limit || 5,
                 fileUploadConfig,
+                preview_config: {
+                  mode: PreviewMode.NewPage,
+                  file_type_list: ['application/pdf'],
+                },
               }}
               isDisabled={textEditorDisabled}
             />