diff --git a/internal/acme/acme.go b/internal/acme/acme.go
index a1d0575d..6c4612e5 100644
--- a/internal/acme/acme.go
+++ b/internal/acme/acme.go
@@ -767,7 +767,7 @@ func (c *Configuration) renewCertificates() error {
 
 func isDomainValid(domain string) (string, bool) {
 	isValid := false
-	for _, d := range strings.Split(domain, ",") {
+	for d := range strings.SplitSeq(domain, ",") {
 		d = strings.TrimSpace(d)
 		if d != "" {
 			isValid = true
@@ -785,7 +785,7 @@ func getDomains(domain string) []string {
 		delimiter = " "
 	}
 
-	for _, d := range strings.Split(domain, delimiter) {
+	for d := range strings.SplitSeq(domain, delimiter) {
 		d = strings.TrimSpace(d)
 		if d != "" {
 			domains = append(domains, d)
diff --git a/internal/cmd/portable.go b/internal/cmd/portable.go
index 5215b5ec..356371a9 100644
--- a/internal/cmd/portable.go
+++ b/internal/cmd/portable.go
@@ -496,7 +496,7 @@ func getPatternsFilterValues(value string) (string, []string) {
 		if len(dirExts) > 1 {
 			dir := strings.TrimSpace(dirExts[0])
 			exts := []string{}
-			for _, e := range strings.Split(dirExts[1], ",") {
+			for e := range strings.SplitSeq(dirExts[1], ",") {
 				cleanedExt := strings.TrimSpace(e)
 				if cleanedExt != "" {
 					exts = append(exts, cleanedExt)
diff --git a/internal/config/config.go b/internal/config/config.go
index 5431d5a4..62a32ecf 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -2278,7 +2278,7 @@ func lookupStringListFromEnv(envName string) ([]string, bool) {
 	value, ok := os.LookupEnv(envName)
 	if ok {
 		var result []string
-		for _, v := range strings.Split(value, ",") {
+		for v := range strings.SplitSeq(value, ",") {
 			val := strings.TrimSpace(v)
 			if val != "" {
 				result = append(result, val)
diff --git a/internal/dataprovider/pgsql.go b/internal/dataprovider/pgsql.go
index 19cf44fd..ae38e9ed 100644
--- a/internal/dataprovider/pgsql.go
+++ b/internal/dataprovider/pgsql.go
@@ -281,7 +281,7 @@ func getPGSQLHostsAndPorts(configHost string, configPort int) (string, string) {
 		defaultPort = "5432"
 	}
 
-	for _, hostport := range strings.Split(configHost, ",") {
+	for hostport := range strings.SplitSeq(configHost, ",") {
 		hostport = strings.TrimSpace(hostport)
 		if hostport == "" {
 			continue
diff --git a/internal/httpd/api_utils.go b/internal/httpd/api_utils.go
index 93af713e..853973d0 100644
--- a/internal/httpd/api_utils.go
+++ b/internal/httpd/api_utils.go
@@ -161,7 +161,7 @@ func getURLPath(r *http.Request) string {
 func getCommaSeparatedQueryParam(r *http.Request, key string) []string {
 	var result []string
 
-	for _, val := range strings.Split(r.URL.Query().Get(key), ",") {
+	for val := range strings.SplitSeq(r.URL.Query().Get(key), ",") {
 		val = strings.TrimSpace(val)
 		if val != "" {
 			result = append(result, val)
diff --git a/internal/httpd/web.go b/internal/httpd/web.go
index 877adaf7..da7e7542 100644
--- a/internal/httpd/web.go
+++ b/internal/httpd/web.go
@@ -107,7 +107,7 @@ type resetPwdPage struct {
 
 func getSliceFromDelimitedValues(values, delimiter string) []string {
 	result := []string{}
-	for _, v := range strings.Split(values, delimiter) {
+	for v := range strings.SplitSeq(values, delimiter) {
 		cleaned := strings.TrimSpace(v)
 		if cleaned != "" {
 			result = append(result, cleaned)
diff --git a/internal/util/util.go b/internal/util/util.go
index 1fe1492b..39b81c54 100644
--- a/internal/util/util.go
+++ b/internal/util/util.go
@@ -731,7 +731,7 @@ func GetRealIP(r *http.Request, header string, depth int) string {
 	var ipAddresses []string
 
 	for _, h := range r.Header.Values(header) {
-		for _, ipStr := range strings.Split(h, ",") {
+		for ipStr := range strings.SplitSeq(h, ",") {
 			ipStr = strings.TrimSpace(ipStr)
 			ipAddresses = append(ipAddresses, ipStr)
 		}