diff --git a/ui/src/views/form/editors/ImageUploadEditorComponent.tsx b/ui/src/views/form/editors/ImageUploadEditorComponent.tsx
index 17da763..424bda8 100644
--- a/ui/src/views/form/editors/ImageUploadEditorComponent.tsx
+++ b/ui/src/views/form/editors/ImageUploadEditorComponent.tsx
@@ -1,6 +1,11 @@
 import { ImageUploadOptionsDto } from '@/proxy/form/models'
 import { ReactElement, useRef, useState } from 'react'
 import { FaSpinner, FaUpload } from 'react-icons/fa'
+import {
+  hideImageHoverPreview,
+  openImageInNewTab,
+  showImageHoverPreview,
+} from './imageHoverPreview'
 
 const ImageUploadEditorComponent = ({
   value,
@@ -98,12 +103,17 @@ const ImageUploadEditorComponent = ({
           <img
             src={url}
             alt=""
+            onMouseEnter={(event) => showImageHoverPreview(url, event)}
+            onMouseMove={(event) => showImageHoverPreview(url, event)}
+            onMouseLeave={hideImageHoverPreview}
+            onClick={() => openImageInNewTab(url)}
             style={{
               width: thumbW,
               height: thumbH,
               objectFit: 'cover',
               borderRadius: 4,
               border: '1px solid #ddd',
+              cursor: 'zoom-in',
             }}
           />
           {!readOnly && (
diff --git a/ui/src/views/form/editors/ImageViewerEditorComponent.tsx b/ui/src/views/form/editors/ImageViewerEditorComponent.tsx
index d321faf..0cc35b3 100644
--- a/ui/src/views/form/editors/ImageViewerEditorComponent.tsx
+++ b/ui/src/views/form/editors/ImageViewerEditorComponent.tsx
@@ -1,5 +1,10 @@
 import { ImageUploadOptionsDto } from '@/proxy/form/models'
 import { ReactElement } from 'react'
+import {
+  hideImageHoverPreview,
+  openImageInNewTab,
+  showImageHoverPreview,
+} from './imageHoverPreview'
 
 const parseJsonObject = (value: unknown) => {
   if (!value) return undefined
@@ -86,26 +91,6 @@ const normalizeImageValue = (value: unknown): string[] => {
   return source ? [toImageSource(source)] : []
 }
 
-const openImage = (url: string) => {
-  if (!url.startsWith('data:image/')) {
-    window.open(url, '_blank', 'noopener,noreferrer')
-    return
-  }
-
-  try {
-    const match = url.match(/^data:(image\/[^;]+);base64,(.*)$/)
-    if (!match) return
-
-    const binary = atob(match[2])
-    const bytes = Uint8Array.from(binary, (char) => char.charCodeAt(0))
-    const blobUrl = URL.createObjectURL(new Blob([bytes], { type: match[1] }))
-    window.open(blobUrl, '_blank', 'noopener,noreferrer')
-    window.setTimeout(() => URL.revokeObjectURL(blobUrl), 60000)
-  } catch {
-    window.open(url, '_blank', 'noopener,noreferrer')
-  }
-}
-
 const ImageViewerEditorComponent = ({
   value,
   options,
@@ -130,12 +115,15 @@ const ImageViewerEditorComponent = ({
         <button
           key={`${url}-${index}`}
           type="button"
-          onClick={() => openImage(url)}
+          onClick={() => openImageInNewTab(url)}
           style={{ border: 0, background: 'transparent', padding: 0, cursor: 'zoom-in' }}
         >
           <img
             src={url}
             alt=""
+            onMouseEnter={(event) => showImageHoverPreview(url, event)}
+            onMouseMove={(event) => showImageHoverPreview(url, event)}
+            onMouseLeave={hideImageHoverPreview}
             style={{
               width: thumbW,
               height: thumbH,
diff --git a/ui/src/views/form/editors/imageHoverPreview.ts b/ui/src/views/form/editors/imageHoverPreview.ts
new file mode 100644
index 0000000..524cca8
--- /dev/null
+++ b/ui/src/views/form/editors/imageHoverPreview.ts
@@ -0,0 +1,90 @@
+const NO_IMAGE = '/img/others/no-image.png'
+
+let previewElement: HTMLDivElement | null = null
+
+const getPreviewElement = () => {
+  if (!previewElement) {
+    const element = document.createElement('div')
+    element.style.cssText = [
+      'position:fixed',
+      'z-index:99999',
+      'display:none',
+      'pointer-events:none',
+      'background:#fff',
+      'border:1px solid #d1d5db',
+      'border-radius:8px',
+      'box-shadow:0 8px 32px rgba(0,0,0,0.22)',
+      'padding:4px',
+      'max-width:320px',
+      'max-height:320px',
+      'overflow:hidden',
+      'transition:opacity 0.15s ease',
+      'opacity:0',
+    ].join(';')
+
+    const image = document.createElement('img')
+    image.src = NO_IMAGE
+    image.style.cssText =
+      'display:block;max-width:312px;max-height:312px;object-fit:contain;border-radius:4px;'
+    element.appendChild(image)
+    document.body.appendChild(element)
+    previewElement = element
+  }
+
+  return previewElement
+}
+
+export const showImageHoverPreview = (src: string, event: React.MouseEvent<HTMLElement>) => {
+  const element = getPreviewElement()
+  const image = element.querySelector('img') as HTMLImageElement
+  image.onerror = () => {
+    image.onerror = null
+    image.src = NO_IMAGE
+  }
+  if (image.src !== src) image.src = src
+
+  const gap = 12
+  element.style.opacity = '0'
+  element.style.display = 'block'
+
+  const width = element.offsetWidth || 320
+  const height = element.offsetHeight || 320
+  let left = event.clientX + gap
+  let top = event.clientY + gap
+
+  if (left + width > window.innerWidth - 8) left = event.clientX - width - gap
+  if (top + height > window.innerHeight - 8) top = event.clientY - height - gap
+  if (left < 8) left = 8
+  if (top < 8) top = 8
+
+  element.style.left = `${left}px`
+  element.style.top = `${top}px`
+  element.style.opacity = '1'
+}
+
+export const hideImageHoverPreview = () => {
+  if (previewElement) {
+    previewElement.style.opacity = '0'
+    previewElement.style.display = 'none'
+  }
+}
+
+export const openImageInNewTab = (url: string) => {
+  if (!url.startsWith('data:image/')) {
+    window.open(url, '_blank', 'noopener,noreferrer')
+    return
+  }
+
+  try {
+    const match = url.match(/^data:(image\/[^;]+);base64,(.*)$/)
+    if (!match) throw new Error('Unsupported image data URL')
+
+    const binary = atob(match[2])
+    const bytes = Uint8Array.from(binary, (char) => char.charCodeAt(0))
+    const blobUrl = URL.createObjectURL(new Blob([bytes], { type: match[1] }))
+    window.open(blobUrl, '_blank', 'noopener,noreferrer')
+    window.setTimeout(() => URL.revokeObjectURL(blobUrl), 60000)
+  } catch {
+    window.open(url, '_blank', 'noopener,noreferrer')
+  }
+}
diff --git a/ui/src/views/list/editors/ImageUploadEditorComponent.tsx b/ui/src/views/list/editors/ImageUploadEditorComponent.tsx
index 1f0e034..53d2cfa 100644
--- a/ui/src/views/list/editors/ImageUploadEditorComponent.tsx
+++ b/ui/src/views/list/editors/ImageUploadEditorComponent.tsx
@@ -1,5 +1,10 @@
 import { ReactElement, useRef, useState } from 'react'
 import { FaSpinner, FaUpload } from 'react-icons/fa'
+import {
+  hideImageHoverPreview,
+  openImageInNewTab,
+  showImageHoverPreview,
+} from '../../form/editors/imageHoverPreview'
 
 const ImageUploadEditorComponent = (cellElement: any): ReactElement => {
   const col = cellElement.column
@@ -101,12 +106,17 @@ const ImageUploadEditorComponent = (cellElement: any): ReactElement => {
           <img
             src={url}
             alt=""
+            onMouseEnter={(event) => showImageHoverPreview(url, event)}
+            onMouseMove={(event) => showImageHoverPreview(url, event)}
+            onMouseLeave={hideImageHoverPreview}
+            onClick={() => openImageInNewTab(url)}
             style={{
               width: thumbW,
               height: thumbH,
               objectFit: 'cover',
               borderRadius: 4,
               border: '1px solid #ddd',
+              cursor: 'zoom-in',
             }}
           />
           <button
diff --git a/ui/src/views/list/editors/ImageViewerEditorComponent.tsx b/ui/src/views/list/editors/ImageViewerEditorComponent.tsx
index 85bbdef..635c503 100644
--- a/ui/src/views/list/editors/ImageViewerEditorComponent.tsx
+++ b/ui/src/views/list/editors/ImageViewerEditorComponent.tsx
@@ -1,4 +1,9 @@
 import { ReactElement } from 'react'
+import {
+  hideImageHoverPreview,
+  openImageInNewTab,
+  showImageHoverPreview,
+} from '../../form/editors/imageHoverPreview'
 
 const parseJsonObject = (value: unknown) => {
   if (!value) return undefined
@@ -85,26 +90,6 @@ const normalizeImageValue = (value: unknown): string[] => {
   return source ? [toImageSource(source)] : []
 }
 
-const openImage = (url: string) => {
-  if (!url.startsWith('data:image/')) {
-    window.open(url, '_blank', 'noopener,noreferrer')
-    return
-  }
-
-  try {
-    const match = url.match(/^data:(image\/[^;]+);base64,(.*)$/)
-    if (!match) return
-
-    const binary = atob(match[2])
-    const bytes = Uint8Array.from(binary, (char) => char.charCodeAt(0))
-    const blobUrl = URL.createObjectURL(new Blob([bytes], { type: match[1] }))
-    window.open(blobUrl, '_blank', 'noopener,noreferrer')
-    window.setTimeout(() => URL.revokeObjectURL(blobUrl), 60000)
-  } catch {
-    window.open(url, '_blank', 'noopener,noreferrer')
-  }
-}
-
 const resolveTemplateValue = (templateData: any) => {
   const dataField =
     templateData?.dataField ||
@@ -174,12 +159,15 @@ const ImageViewerEditorComponent = (templateData: any): ReactElement => {
         <button
           key={`${url}-${index}`}
           type="button"
-          onClick={() => openImage(url)}
+          onClick={() => openImageInNewTab(url)}
           style={{ border: 0, background: 'transparent', padding: 0, cursor: 'zoom-in' }}
         >
           <img
             src={url}
             alt=""
+            onMouseEnter={(event) => showImageHoverPreview(url, event)}
+            onMouseMove={(event) => showImageHoverPreview(url, event)}
+            onMouseLeave={hideImageHoverPreview}
             style={{
               width: thumbW,
               height: thumbH,