From c495c3936b0c9ae2369e7d9e8eacbcac8d64ab45 Mon Sep 17 00:00:00 2001
From: adbenitez <asieldbenitez@gmail.com>
Date: Fri, 5 Dec 2025 23:45:27 +0100
Subject: [PATCH 1/2] only save common image formats to Pictures

---
 .../securesms/util/SaveAttachmentTask.java    | 23 +++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/thoughtcrime/securesms/util/SaveAttachmentTask.java b/src/main/java/org/thoughtcrime/securesms/util/SaveAttachmentTask.java
index e7e50d5fd..42d259ae7 100644
--- a/src/main/java/org/thoughtcrime/securesms/util/SaveAttachmentTask.java
+++ b/src/main/java/org/thoughtcrime/securesms/util/SaveAttachmentTask.java
@@ -152,13 +152,32 @@ public class SaveAttachmentTask extends ProgressDialogAsyncTask<SaveAttachmentTa
       return StorageUtil.getVideoUri();
     } else if (contentType.startsWith("audio/")) {
       return StorageUtil.getAudioUri();
-    } else if (contentType.startsWith("image/")) {
+    } else if (isMediaStoreImageType(contentType)) {
       return StorageUtil.getImageUri();
     } else {
       return StorageUtil.getDownloadUri();
     }
   }
 
+  /**
+   * Checks if the content type is a standard image format supported by Android's MediaStore.
+   * Non-standard image formats (like XCF, PSD, etc.) should be saved to Downloads instead.
+   */
+  private boolean isMediaStoreImageType(@NonNull String contentType) {
+    if (!contentType.startsWith("image/")) {
+      return false;
+    }
+    return contentType.equals("image/jpeg") ||
+      contentType.equals("image/jpg") ||
+      contentType.equals("image/png") ||
+      contentType.equals("image/gif") ||
+      contentType.equals("image/webp") ||
+      contentType.equals("image/bmp") ||
+      contentType.equals("image/heic") ||
+      contentType.equals("image/heif") ||
+      contentType.equals("image/avif");
+  }
+
   private @Nullable File ensureExternalPath(@Nullable File path) {
     if (path != null && path.exists()) {
       return path;
@@ -197,7 +216,7 @@ public class SaveAttachmentTask extends ProgressDialogAsyncTask<SaveAttachmentTa
       storage = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES);
     } else if (contentType.startsWith("audio/")) {
       storage = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MUSIC);
-    } else if (contentType.startsWith("image/")) {
+    } else if (isMediaStoreImageType(contentType)) {
       storage = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
     }
 

From b77862c2905b57f9f272288369af264269287540 Mon Sep 17 00:00:00 2001
From: adbenitez <asieldbenitez@gmail.com>
Date: Fri, 5 Dec 2025 23:48:21 +0100
Subject: [PATCH 2/2] update changelog

---
 CHANGELOG.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ac6ff65b..a3028bde0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@
 * Tweak advanced section and wording of some advanced options
 * Fix: avoid crash in push notifications handling
 * Fix: clean up web storage of deleted in-chat apps
+* Fix: avoid crash when exporting some files with wrong image MIME type
 * Expose new "Multi-device mode" option instead of "Delete from server" for chatmail profiles
 * Opened in-chat apps got a 'About Apps' menu item
 * Avoid gray avatar on profile creation