diff --git a/index.html b/index.html
index 9f0cf74..b5e7875 100644
--- a/index.html
+++ b/index.html
@@ -1485,13 +1485,29 @@ downloadBtn.addEventListener('click', () => {
   const now = new Date();
   const pad = n => String(n).padStart(2, '0');
   const ts = `${now.getFullYear()}${pad(now.getMonth()+1)}${pad(now.getDate())}-${pad(now.getHours())}${pad(now.getMinutes())}${pad(now.getSeconds())}`;
-  const link = document.createElement('a');
-  link.download = `camera-spec-card-${ts}.jpg`;
-  link.href = canvas.toDataURL('image/jpeg', 0.92);
-  link.style.display = 'none';
-  document.body.appendChild(link);
-  link.click();
-  document.body.removeChild(link);
+  const filename = `camera-spec-card-${ts}.jpg`;
+
+  canvas.toBlob(blob => {
+    if (!blob) {
+      const link = document.createElement('a');
+      link.download = filename;
+      link.href = canvas.toDataURL('image/jpeg', 0.92);
+      link.style.display = 'none';
+      document.body.appendChild(link);
+      link.click();
+      document.body.removeChild(link);
+      return;
+    }
+    const url = URL.createObjectURL(blob);
+    const link = document.createElement('a');
+    link.download = filename;
+    link.href = url;
+    link.style.display = 'none';
+    document.body.appendChild(link);
+    link.click();
+    document.body.removeChild(link);
+    setTimeout(() => URL.revokeObjectURL(url), 1000);
+  }, 'image/jpeg', 0.92);
 });
 
 function getFileType(file) {
@@ -1698,7 +1714,7 @@ function buildMetaFromRaw(exif) {
     const parts = exif.DateTimeOriginal.split(' ');
     if (parts[0]) {
       const parsed = new Date(parts[0].replace(/:/g, '-'));
-      if (!isNaN(parsed)) date = parsed.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric' });
+      if (!isNaN(parsed)) date = parsed.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric', timeZone: 'UTC' });
     }
   }
   return { camera, lensModel, focalLength, aperture, shutter, iso, date };
@@ -1923,7 +1939,7 @@ function parseFitsHeader(text) {
   const dateObs = get('DATE-OBS') || get('DATE');
   if (dateObs) {
     const parsed = new Date(dateObs.split('T')[0]);
-    meta.date = isNaN(parsed) ? dateObs : parsed.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric' });
+    meta.date = isNaN(parsed) ? dateObs : parsed.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric', timeZone: 'UTC' });
   } else {
     meta.date = null;
   }
@@ -2144,7 +2160,7 @@ function extractMetaFromTiffIfd(ifd) {
     if (parts[0]) {
       const d = parts[0].replace(/:/g, '-');
       const parsed = new Date(d);
-      result.date = isNaN(parsed) ? null : parsed.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric' });
+      result.date = isNaN(parsed) ? null : parsed.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric', timeZone: 'UTC' });
     }
   }
   return result;
@@ -2192,7 +2208,7 @@ function extractMeta(exif) {
     if (parts[0]) {
       const d = parts[0].replace(/:/g, '-');
       const parsed = new Date(d);
-      if (!isNaN(parsed)) date = parsed.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric' });
+      if (!isNaN(parsed)) date = parsed.toLocaleDateString('en-US', { year: 'numeric', month: 'short', day: 'numeric', timeZone: 'UTC' });
     }
   }
   return { camera, lensModel, focalLength, aperture, shutter, iso, date };