From a1cd3d33bcbb900c60222ab61458ee2b92fd8d45 Mon Sep 17 00:00:00 2001
From: Andrew <andrew@digerati.co.nz>
Date: Mon, 28 Nov 2022 19:19:38 +1300
Subject: [PATCH] Update safe chunk list

---
 src/headers.rs | 2 +-
 src/lib.rs     | 6 ++----
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/headers.rs b/src/headers.rs
index 1b92d9b3..5b3f70e7 100644
--- a/src/headers.rs
+++ b/src/headers.rs
@@ -71,7 +71,7 @@ pub enum Headers {
     None,
     /// Remove specific chunks
     Strip(Vec<String>),
-    /// Headers that won't affect rendering (all but cHRM, gAMA, iCCP, sBIT, sRGB, bKGD, hIST, pHYs, sPLT)
+    /// Headers that won't affect rendering (all but cICP, iCCP, sBIT, sRGB, pHYs)
     Safe,
     /// Remove all non-critical chunks except these
     Keep(IndexSet<String>),
diff --git a/src/lib.rs b/src/lib.rs
index f4be1979..fa14a8a8 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -857,10 +857,8 @@ fn perform_strip(png: &mut PngData, opts: &Options) {
             }
         }
         Headers::Safe => {
-            const PRESERVED_HEADERS: [[u8; 4]; 9] = [
-                *b"cHRM", *b"gAMA", *b"iCCP", *b"sBIT", *b"sRGB", *b"bKGD", *b"hIST", *b"pHYs",
-                *b"sPLT",
-            ];
+            const PRESERVED_HEADERS: [[u8; 4]; 5] =
+                [*b"cICP", *b"iCCP", *b"sBIT", *b"sRGB", *b"pHYs"];
             let keys: Vec<[u8; 4]> = raw.aux_headers.keys().cloned().collect();
             for hdr in &keys {
                 if !PRESERVED_HEADERS.contains(hdr) {