diff --git a/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/richtext/RichTextParser.kt b/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/richtext/RichTextParser.kt
index e3cb26313..abddd2325 100644
--- a/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/richtext/RichTextParser.kt
+++ b/commons/src/commonMain/kotlin/com/vitorpamplona/amethyst/commons/richtext/RichTextParser.kt
@@ -420,7 +420,7 @@ class RichTextParser {
             )
 
         val imageExt = listOf("png", "jpg", "gif", "bmp", "jpeg", "webp", "svg", "avif")
-        val videoExt = listOf("mp4", "avi", "wmv", "mpg", "amv", "webm", "mov", "mp3", "m3u8", "ogg", "wav", "flac", "aac", "opus", "m4a")
+        val videoExt = listOf("mp4", "avi", "wmv", "mpg", "amv", "webm", "mov", "mp3", "m3u8", "ogg", "wav", "flac", "aac", "opus", "m4a", "f4a")
         val pdfExt = listOf("pdf")
 
         val imageExtensions = imageExt + imageExt.map { it.uppercase() }
@@ -556,6 +556,7 @@ val mimeTypeMap: Map<String, String> =
         "wav" to "audio/wav",
         "ogg" to "audio/ogg",
         "m4a" to "audio/mp4",
+        "f4a" to "audio/mp4",
         "aac" to "audio/aac",
         "flac" to "audio/flac",
         // Documents
diff --git a/commons/src/commonTest/kotlin/com/vitorpamplona/amethyst/commons/richtext/F4aAudioParserTest.kt b/commons/src/commonTest/kotlin/com/vitorpamplona/amethyst/commons/richtext/F4aAudioParserTest.kt
new file mode 100644
index 000000000..12d6c1c3c
--- /dev/null
+++ b/commons/src/commonTest/kotlin/com/vitorpamplona/amethyst/commons/richtext/F4aAudioParserTest.kt
@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.amethyst.commons.richtext
+
+import com.vitorpamplona.amethyst.commons.model.EmptyTagList
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class F4aAudioParserTest {
+    @Test
+    fun detectsF4aByExtension() {
+        val url = "https://example.com/audio/track.f4a"
+        val state = RichTextParser().parseText(url, EmptyTagList, null)
+
+        val media = state.mediaForPager[url]
+        assertTrue(media is MediaUrlVideo, "Expected MediaUrlVideo for .f4a URL")
+
+        val segment = state.paragraphs[0].words[0]
+        assertTrue(segment is VideoSegment, "Expected VideoSegment for .f4a URL, got ${segment::class.simpleName}")
+        assertEquals(url, segment.segmentText)
+    }
+
+    @Test
+    fun isVideoUrlHelperMatchesF4aExtension() {
+        assertTrue(RichTextParser.isVideoUrl("https://example.com/track.f4a"))
+        assertTrue(RichTextParser.isVideoUrl("https://example.com/track.F4A"))
+        assertTrue(RichTextParser.isVideoUrl("https://example.com/track.f4a?sig=abc"))
+    }
+
+    @Test
+    fun f4aMapsToMp4AudioMimeType() {
+        assertEquals("audio/mp4", mimeTypeMap["f4a"])
+    }
+}