diff --git a/src/utils/nip94.ts b/src/utils/nip94.ts
index 8582a319..c22ad6d9 100644
--- a/src/utils/nip94.ts
+++ b/src/utils/nip94.ts
@@ -1,5 +1,5 @@
 export function fileType(url: string) {
-  if (url.match(/\.(jpg|jpeg|gif|png|webp|avif)$/)) {
+  if (url.match(/\.(jpg|jpeg|gif|png|webp|avif|tiff)$/)) {
     return 'image';
   }
 
diff --git a/src/utils/parser.ts b/src/utils/parser.ts
index 42d1fac4..296f93e2 100644
--- a/src/utils/parser.ts
+++ b/src/utils/parser.ts
@@ -41,7 +41,7 @@ export function parser(content: string) {
         const url = new URL(word);
         url.search = '';
 
-        if (url.pathname.match(/\.(jpg|jpeg|gif|png|webp|avif)$/)) {
+        if (url.pathname.match(/\.(jpg|jpeg|gif|png|webp|avif|tiff)$/)) {
           // image url
           richContent.images.push(word);
           // remove url from original content