diff --git a/system/image/image.go b/system/image/image.go
index 3cd1022..aebd112 100644
--- a/system/image/image.go
+++ b/system/image/image.go
@@ -87,6 +87,12 @@ func Fetch(name string, options ...Option) (string, error) {
 		return "", err
 	}
 
+	// If we are running in the browser, we reduce the color pair count to 2
+	// as the algorithm is very slow running in WASM.
+	if runtime.GOOS == "js" {
+		imejiOptions = append(imejiOptions, imeji.WithColorPairMax(2))
+	}
+
 	if res, err := getCache(hash); err == nil {
 		return string(res.([]byte)), nil
 	}
@@ -127,6 +133,12 @@ func FetchAnimation(name string, options ...Option) ([]string, error) {
 		return nil, err
 	}
 
+	// If we are running in the browser, we reduce the color pair count to 2
+	// as the algorithm is very slow running in WASM.
+	if runtime.GOOS == "js" {
+		imejiOptions = append(imejiOptions, imeji.WithColorPairMax(2))
+	}
+
 	if res, err := getCache(hash); err == nil {
 		return res.([]string), nil
 	}