diff --git a/CHANGELOG.md b/CHANGELOG.md
index d64f78db5..bf6dd4465 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,8 @@
   - updated *models -> list models* tab  
   - updated *models -> metadata* tab  
   - more css optimizations and styling  
+  - gallery bypass browser cache for thumbnails  
+  - gallery safer delete operation  
 - **Offloading**
   - changed **default** values for offloading based on detected gpu memory  
     see [offloading docs](https://vladmandic.github.io/sdnext-docs/Offload/) for details  
diff --git a/javascript/gallery.js b/javascript/gallery.js
index 2de1d70a3..9d94235b3 100644
--- a/javascript/gallery.js
+++ b/javascript/gallery.js
@@ -192,7 +192,8 @@ async function addSeparators() {
 async function delayFetchThumb(fn) {
   while (outstanding > 16) await new Promise((resolve) => setTimeout(resolve, 50)); // eslint-disable-line no-promise-executor-return
   outstanding++;
-  const res = await fetch(`${window.api}/browser/thumb?file=${encodeURI(fn)}`, { priority: 'low' });
+  const ts = Date.now().toString();
+  const res = await fetch(`${window.api}/browser/thumb?file=${encodeURI(fn)}&ts=${ts}`, { priority: 'low' });
   if (!res.ok) {
     error(`fetchThumb: ${res.statusText}`);
     outstanding--;
diff --git a/javascript/ui.js b/javascript/ui.js
index 4df527ceb..a499dc32d 100644
--- a/javascript/ui.js
+++ b/javascript/ui.js
@@ -32,6 +32,12 @@ function clip_gallery_urls(gallery) {
   );
 }
 
+function isVisible(el) {
+  const rect = el.getBoundingClientRect();
+  if (rect.width === 0 && rect.height === 0) return false;
+  return rect.top >= 0 && rect.left >= 0 && rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && rect.right <= (window.innerWidth || document.documentElement.clientWidth);
+}
+
 function all_gallery_buttons() {
   let allGalleryButtons = gradioApp().querySelectorAll('[style="display: block;"].tabitem div[id$=_gallery].gradio-gallery .thumbnails > .thumbnail-item.thumbnail-small');
   if (allGalleryButtons.length === 0) allGalleryButtons = gradioApp().querySelectorAll('.gradio-gallery .thumbnails > .thumbnail-item.thumbnail-small');
@@ -66,6 +72,7 @@ function selected_gallery_files() {
     let allCurrentButtons = gradioApp().querySelectorAll('[style="display: block;"].tabitem div[id$=_gallery].gradio-gallery .thumbnail-item.thumbnail-small');
     if (allCurrentButtons.length === 0) allCurrentButtons = gradioApp().querySelectorAll('.gradio-gallery .thumbnails > .thumbnail-item.thumbnail-small');
     allImages = Array.from(allCurrentButtons).map((v) => v.querySelector('img')?.src);
+    allImages = allImages.filter((el) => isVisible(el));
   } catch { /**/ }
   const selectedIndex = selected_gallery_index();
   return [allImages, selectedIndex];
@@ -178,7 +185,7 @@ function switch_to_caption(...args) {
 
 function get_tab_index(tabId) {
   let res = 0;
-  gradioApp().getElementById(tabId).querySelector('div').querySelectorAll('button')
+  gradioApp().getElementById(tabId)?.querySelector('div').querySelectorAll('button')
     .forEach((button, i) => {
       if (button.className.indexOf('selected') !== -1) res = i;
     });
diff --git a/modules/ui_common.py b/modules/ui_common.py
index 33a76e850..9df1a9ccb 100644
--- a/modules/ui_common.py
+++ b/modules/ui_common.py
@@ -67,7 +67,7 @@ def delete_files(js_data, files, all_files, index):
     for _image_index, filedata in enumerate(files, start_index):
         try:
             fn = filedata['name']
-            if os.path.isfile(fn):
+            if os.path.exists(fn) and os.path.isfile(fn):
                 deleted.append(fn)
                 os.remove(fn)
                 if fn in all_files:
@@ -75,11 +75,11 @@ def delete_files(js_data, files, all_files, index):
                 shared.log.info(f'Delete: image="{fn}"')
             base, _ext = os.path.splitext(fn)
             desc = f'{base}.txt'
-            if os.path.exists(desc):
+            if os.path.exists(desc) and os.path.isfile(desc):
                 os.remove(desc)
                 shared.log.info(f'Delete: text="{fn}"')
         except Exception as e:
-            shared.log.error(f'Delete: image="{fn}" {e}')
+            shared.log.error(f'Delete: file="{fn}" {e}')
     deleted = ', '.join(deleted) if len(deleted) > 0 else 'none'
     return all_files, plaintext_to_html(f"Deleted: {deleted}", ['performance'])
 
diff --git a/modules/ui_gallery.py b/modules/ui_gallery.py
index 3b0363359..e6dd3757e 100644
--- a/modules/ui_gallery.py
+++ b/modules/ui_gallery.py
@@ -6,6 +6,7 @@ from PIL import Image
 from modules import shared, ui_symbols, ui_common, images, video
 from modules.ui_components import ToolButton
 
+
 def read_media(fn):
     fn = unquote(fn).replace('%3A', ':')
     if not os.path.isfile(fn):