diff --git a/nireports/assembler/reportlet.py b/nireports/assembler/reportlet.py
index b14acc7..ec31bb8 100644
--- a/nireports/assembler/reportlet.py
+++ b/nireports/assembler/reportlet.py
@@ -270,7 +270,7 @@ def __init__(self, layout, config=None, out_dir=None, bids_filters=None, metadat
                         name=html_anchor,
                         style="; ".join(f"{k}: {v}" for k, v in style.items()),
                     )
-                elif ext in (".png", ".jpg", ".jpeg"):
+                elif ext in (".png", ".jpg", ".jpeg", ".gif"):
                     entities = dict(bidsfile.entities)
                     if desc_text:
                         desc_text = desc_text.format(**entities)