diff --git a/src/ROUTES.ts b/src/ROUTES.ts
index af34b8b7e9ea..a49df16b570a 100644
--- a/src/ROUTES.ts
+++ b/src/ROUTES.ts
@@ -204,7 +204,7 @@ const ROUTES = {
     },
     REPORT_ATTACHMENTS: {
         route: 'r/:reportID/attachment',
-        getRoute: (reportID: string, source: string) => `r/${reportID}/attachment?source=${encodeURI(source)}` as const,
+        getRoute: (reportID: string, source: string) => `r/${reportID}/attachment?source=${encodeURIComponent(source)}` as const,
     },
     REPORT_PARTICIPANTS: {
         route: 'r/:reportID/participants',
diff --git a/src/components/Attachments/AttachmentCarousel/extractAttachmentsFromReport.js b/src/components/Attachments/AttachmentCarousel/extractAttachmentsFromReport.js
index b934bdfdd738..9524c5203110 100644
--- a/src/components/Attachments/AttachmentCarousel/extractAttachmentsFromReport.js
+++ b/src/components/Attachments/AttachmentCarousel/extractAttachmentsFromReport.js
@@ -15,10 +15,19 @@ import CONST from '@src/CONST';
 function extractAttachmentsFromReport(parentReportAction, reportActions) {
     const actions = [parentReportAction, ...ReportActionsUtils.getSortedReportActions(_.values(reportActions))];
     const attachments = [];
+    // We handle duplicate image sources by considering the first instance as original. Selecting any duplicate
+    // and navigating back (<) shows the image preceding the first instance, not the selected duplicate's position.
+    const uniqueSources = new Set();
 
     const htmlParser = new HtmlParser({
         onopentag: (name, attribs) => {
             if (name === 'video') {
+                const source = tryResolveUrlFromApiRoot(attribs[CONST.ATTACHMENT_SOURCE_ATTRIBUTE]);
+                if (uniqueSources.has(source)) {
+                    return;
+                }
+
+                uniqueSources.add(source);
                 const splittedUrl = attribs[CONST.ATTACHMENT_SOURCE_ATTRIBUTE].split('/');
                 attachments.unshift({
                     reportActionID: null,
@@ -35,7 +44,20 @@ function extractAttachmentsFromReport(parentReportAction, reportActions) {
             if (name === 'img' && attribs.src) {
                 const expensifySource = attribs[CONST.ATTACHMENT_SOURCE_ATTRIBUTE];
                 const source = tryResolveUrlFromApiRoot(expensifySource || attribs.src);
-                const fileName = attribs[CONST.ATTACHMENT_ORIGINAL_FILENAME_ATTRIBUTE] || FileUtils.getFileName(`${source}`);
+                if (uniqueSources.has(source)) {
+                    return;
+                }
+
+                uniqueSources.add(source);
+                let fileName = attribs[CONST.ATTACHMENT_ORIGINAL_FILENAME_ATTRIBUTE] || FileUtils.getFileName(`${source}`);
+
+                // Public image URLs might lack a file extension in the source URL, without an extension our
+                // AttachmentView fails to recognize them as images and renders fallback content instead.
+                // We apply this small hack to add an image extension and ensure AttachmentView renders the image.
+                const fileInfo = FileUtils.splitExtensionFromFileName(fileName);
+                if (!fileInfo.fileExtension) {
+                    fileName = `${fileInfo.fileName || 'image'}.jpg`;
+                }
 
                 // By iterating actions in chronological order and prepending each attachment
                 // we ensure correct order of attachments even across actions with multiple attachments.
diff --git a/src/components/Attachments/AttachmentView/index.js b/src/components/Attachments/AttachmentView/index.js
index 461548f0d2b1..9fe37734e8ee 100755
--- a/src/components/Attachments/AttachmentView/index.js
+++ b/src/components/Attachments/AttachmentView/index.js
@@ -79,6 +79,7 @@ const defaultProps = {
     reportActionID: '',
     isHovered: false,
     optionalVideoDuration: 0,
+    fallbackSource: Expensicons.Gallery,
 };
 
 function AttachmentView({
@@ -201,6 +202,21 @@ function AttachmentView({
     // We also check for numeric source since this is how static images (used for preview) are represented in RN.
     const isImage = typeof source === 'number' || Str.isImage(source);
     if (isImage || (file && Str.isImage(file.name))) {
+        if (imageError) {
+            // AttachmentViewImage can't handle icon fallbacks, so we need to handle it here
+            if (typeof fallbackSource === 'number' || _.isFunction(fallbackSource)) {
+                return (
+                    <Icon
+                        src={fallbackSource}
+                        height={variables.defaultAvatarPreviewSize}
+                        width={variables.defaultAvatarPreviewSize}
+                        additionalStyles={[styles.alignItemsCenter, styles.justifyContentCenter, styles.flex1]}
+                        fill={theme.border}
+                    />
+                );
+            }
+        }
+
         return (
             <AttachmentViewImage
                 url={imageError ? fallbackSource : source}
diff --git a/src/pages/home/report/ReportAttachments.tsx b/src/pages/home/report/ReportAttachments.tsx
index 2c6ce7a2dabd..de145d5ef7e6 100644
--- a/src/pages/home/report/ReportAttachments.tsx
+++ b/src/pages/home/report/ReportAttachments.tsx
@@ -16,8 +16,7 @@ function ReportAttachments({route}: ReportAttachmentsProps) {
     const report = ReportUtils.getReport(reportID);
 
     // In native the imported images sources are of type number. Ref: https://reactnative.dev/docs/image#imagesource
-    const decodedSource = decodeURI(route.params.source);
-    const source = Number(decodedSource) || decodedSource;
+    const source = Number(route.params.source) || route.params.source;
 
     const onCarouselAttachmentChange = useCallback(
         (attachment: Attachment) => {