diff --git a/css/filter-effects/effect-reference-feimage-001.html b/css/filter-effects/effect-reference-feimage-001.html
index 3a8fb36db92fb4..5f1c49451ec548 100644
--- a/css/filter-effects/effect-reference-feimage-001.html
+++ b/css/filter-effects/effect-reference-feimage-001.html
@@ -4,6 +4,7 @@
 <link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
 <link rel="match" href="reference/effect-reference-feimage-001-ref.html">
 <meta name="assert" content="This test ensures that CSS reference filters supports feImage."/>
+<meta name="fuzzy" content="maxDifference=0-11; totalPixels=0-17278"/>
 <style>
   #filtered {
     width: 160px;
diff --git a/css/filter-effects/effect-reference-feimage-002.html b/css/filter-effects/effect-reference-feimage-002.html
index c10be0f173ef66..649456f4ada9d5 100644
--- a/css/filter-effects/effect-reference-feimage-002.html
+++ b/css/filter-effects/effect-reference-feimage-002.html
@@ -4,6 +4,7 @@
 <link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
 <link rel="match" href="reference/effect-reference-feimage-002-ref.html">
 <meta name="assert" content="This test ensures that CSS reference filters with 'will-change: transform' supports feImage."/>
+<meta name="fuzzy" content="maxDifference=0-11; totalPixels=0-17278"/>
 <style>
   #filtered {
     width: 160px;
diff --git a/css/filter-effects/effect-reference-feimage-003.html b/css/filter-effects/effect-reference-feimage-003.html
index 887f5ff212f011..90b703f2b1dace 100644
--- a/css/filter-effects/effect-reference-feimage-003.html
+++ b/css/filter-effects/effect-reference-feimage-003.html
@@ -4,6 +4,7 @@
 <link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
 <link rel="match" href="reference/effect-reference-feimage-003-ref.html">
 <meta name="assert" content="This test ensures that CSS reference filters support a dynamically attached feImage."/>
+<meta name="fuzzy" content="maxDifference=0-11; totalPixels=0-17278"/>
 <body>
 
 <style>
diff --git a/css/filter-effects/effect-reference-feimage-004.html b/css/filter-effects/effect-reference-feimage-004.html
index 99b0e8f5ab8236..f4250291ba52b0 100644
--- a/css/filter-effects/effect-reference-feimage-004.html
+++ b/css/filter-effects/effect-reference-feimage-004.html
@@ -4,6 +4,7 @@
 <link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#FilterProperty">
 <link rel="match" href="reference/effect-reference-feimage-004-ref.html">
 <meta name="assert" content="This test ensures that CSS reference filters with 'will-change: filter' supports feImage."/>
+<meta name="fuzzy" content="maxDifference=0-11; totalPixels=0-17278"/>
 <style>
   #filtered {
     width: 160px;
