diff --git a/crates/sylpheed-formats/src/pak.rs b/crates/sylpheed-formats/src/pak.rs
index 6548389..439b4df 100644
--- a/crates/sylpheed-formats/src/pak.rs
+++ b/crates/sylpheed-formats/src/pak.rs
@@ -263,19 +263,34 @@ fn be32(b: &[u8], o: usize) -> u32 {
 }
 
 /// Best-effort human label for a decompressed entry's inner format, from its
-/// first bytes: `IDXD`, `xml`, a printable 4-char tag (RATC, IXUD, LSTA, …), or
-/// a hex fallback. Shared by the CLI `pak list` and the GUI pack browser.
+/// first bytes: a known signature (`IDXD`, fonts, `png`, …), a printable 4-char
+/// tag (RATC, IXUD, LSTA, …), or a hex fallback for still-unidentified magics.
+/// Shared by the CLI `pak list` and the GUI pack browser.
 pub fn inner_format_label(payload: &[u8]) -> String {
     if payload.len() < 4 {
         return "empty".into();
     }
     let m = &payload[0..4];
-    if m == b"IDXD" {
-        "IDXD".into()
-    } else if payload.starts_with(b"<?xml") {
-        "xml".into()
-    } else if m.iter().all(|&b| b.is_ascii_graphic()) {
-        // Many inner formats are 4-char tags (RATC, T8aD, IXUD, LSTA, ttcf, …).
+
+    // Known binary/text signatures → friendly short tags (so fonts/images don't
+    // show as bare hex like `00010000` / `89504E47`).
+    let known = match m {
+        b"IDXD" => Some("IDXD"),
+        b"\x89PNG" => Some("png"),
+        b"\x00\x01\x00\x00" | b"true" | b"typ1" => Some("ttf"), // sfnt TrueType
+        b"OTTO" => Some("otf"),                                 // OpenType (CFF)
+        b"ttcf" => Some("ttc"),                                 // TrueType Collection
+        b"RIFF" => Some("riff"),
+        b"DDS " => Some("dds"),
+        _ if payload.starts_with(b"<?xml") => Some("xml"),
+        _ => None,
+    };
+    if let Some(tag) = known {
+        return tag.into();
+    }
+
+    if m.iter().all(|&b| b.is_ascii_graphic()) {
+        // Many inner formats are 4-char tags (RATC, T8aD, IXUD, LSTA, …).
         String::from_utf8_lossy(m).into_owned()
     } else {
         format!("{:02X}{:02X}{:02X}{:02X}", m[0], m[1], m[2], m[3])