From cb132b1cc4c219f53c1b345dd755b7bcb95fe91e Mon Sep 17 00:00:00 2001
From: andrews05 <andrew@digerati.co.nz>
Date: Fri, 21 Nov 2025 08:04:58 +1300
Subject: [PATCH] Always remove iDOT (#741)

Closes #740
---
 src/headers.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/headers.rs b/src/headers.rs
index 06e09974..504fc8ff 100644
--- a/src/headers.rs
+++ b/src/headers.rs
@@ -410,4 +410,16 @@ pub fn postprocess_chunks(aux_chunks: &mut Vec<Chunk>, ihdr: &IhdrData, orig_ihd
             !invalid
         });
     }
+
+    // Remove iDOT which will necessarily be invalid after successful optimization
+    aux_chunks.retain(|c| {
+        let invalid = &c.name == b"iDOT";
+        if invalid {
+            trace!(
+                "Removing {} chunk as it no longer matches the IDAT",
+                std::str::from_utf8(&c.name).unwrap()
+            );
+        }
+        !invalid
+    });
 }