diff --git a/backend/internal/bootstrap/router_bootstrap.go b/backend/internal/bootstrap/router_bootstrap.go
index cc9e3a91..caeceb1a 100644
--- a/backend/internal/bootstrap/router_bootstrap.go
+++ b/backend/internal/bootstrap/router_bootstrap.go
@@ -9,13 +9,11 @@ import (
 	"net"
 	"net/http"
 	"os"
-	"strconv"
 	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
 
-	"github.com/coreos/go-systemd/activation"
 	"github.com/fsnotify/fsnotify"
 	sloggin "github.com/gin-contrib/slog"
 	"github.com/gin-gonic/gin"
@@ -211,64 +209,6 @@ func initServerProtocols() (*http.Protocols, *tls.Config, *tlsCertProvider, erro
 	return protocols, tlsConfig, certProvider, nil
 }
 
-type socket struct {
-	addr     string
-	listener net.Listener
-}
-
-func systemdSocket() (*socket, error) {
-	listeners, err := activation.Listeners()
-	if err != nil {
-		return nil, fmt.Errorf("failed to receive socket from systemd: %w", err)
-	}
-
-	if len(listeners) == 0 {
-		return nil, errors.New("did not receive any sockets from systemd")
-	}
-
-	if len(listeners) > 1 {
-		return nil, errors.New("received too many sockets from systemd")
-	}
-
-	return &socket{"(systemd)", listeners[0]}, nil
-}
-
-func unixSocket() (*socket, error) {
-	addr := common.EnvConfig.UnixSocket
-	os.Remove(addr) // remove dangling the socket file to avoid file-exist error
-
-	listener, err := net.Listen("unix", addr) //nolint:noctx
-	if err != nil {
-		return nil, fmt.Errorf("failed to create UNIX socket: %w", err)
-	}
-
-	if common.EnvConfig.UnixSocketMode != "" {
-		mode, err := strconv.ParseUint(common.EnvConfig.UnixSocketMode, 8, 32)
-		if err != nil {
-			listener.Close()
-			return nil, fmt.Errorf("failed to parse UNIX socket mode '%s': %w", common.EnvConfig.UnixSocketMode, err)
-		}
-
-		if err := os.Chmod(addr, os.FileMode(mode)); err != nil {
-			listener.Close()
-			return nil, fmt.Errorf("failed to set UNIX socket mode '%s': %w", common.EnvConfig.UnixSocketMode, err)
-		}
-	}
-
-	return &socket{addr, listener}, nil
-}
-
-func tcpSocket() (*socket, error) {
-	addr := net.JoinHostPort(common.EnvConfig.Host, common.EnvConfig.Port)
-
-	listener, err := net.Listen("tcp", addr) //nolint:noctx
-	if err != nil {
-		return nil, fmt.Errorf("failed to create TCP socket: %w", err)
-	}
-
-	return &socket{addr, listener}, nil
-}
-
 func newHTTPServer(r *gin.Engine, protocols *http.Protocols) *http.Server {
 	return &http.Server{
 		MaxHeaderBytes:    1 << 20,
diff --git a/backend/internal/bootstrap/socket.go b/backend/internal/bootstrap/socket.go
new file mode 100644
index 00000000..8c1870df
--- /dev/null
+++ b/backend/internal/bootstrap/socket.go
@@ -0,0 +1,51 @@
+package bootstrap
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"strconv"
+
+	"github.com/pocket-id/pocket-id/backend/internal/common"
+)
+
+type socket struct {
+	addr     string
+	listener net.Listener
+}
+
+func unixSocket() (*socket, error) {
+	addr := common.EnvConfig.UnixSocket
+	os.Remove(addr) // remove dangling the socket file to avoid file-exist error
+
+	listener, err := net.Listen("unix", addr) //nolint:noctx
+	if err != nil {
+		return nil, fmt.Errorf("failed to create UNIX socket: %w", err)
+	}
+
+	if common.EnvConfig.UnixSocketMode != "" {
+		mode, err := strconv.ParseUint(common.EnvConfig.UnixSocketMode, 8, 32)
+		if err != nil {
+			listener.Close()
+			return nil, fmt.Errorf("failed to parse UNIX socket mode '%s': %w", common.EnvConfig.UnixSocketMode, err)
+		}
+
+		if err := os.Chmod(addr, os.FileMode(mode)); err != nil {
+			listener.Close()
+			return nil, fmt.Errorf("failed to set UNIX socket mode '%s': %w", common.EnvConfig.UnixSocketMode, err)
+		}
+	}
+
+	return &socket{addr, listener}, nil
+}
+
+func tcpSocket() (*socket, error) {
+	addr := net.JoinHostPort(common.EnvConfig.Host, common.EnvConfig.Port)
+
+	listener, err := net.Listen("tcp", addr) //nolint:noctx
+	if err != nil {
+		return nil, fmt.Errorf("failed to create TCP socket: %w", err)
+	}
+
+	return &socket{addr, listener}, nil
+}
diff --git a/backend/internal/bootstrap/systemd_socket_linux.go b/backend/internal/bootstrap/systemd_socket_linux.go
new file mode 100644
index 00000000..0579ef36
--- /dev/null
+++ b/backend/internal/bootstrap/systemd_socket_linux.go
@@ -0,0 +1,27 @@
+//go:build linux
+
+package bootstrap
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/coreos/go-systemd/activation"
+)
+
+func systemdSocket() (*socket, error) {
+	listeners, err := activation.Listeners()
+	if err != nil {
+		return nil, fmt.Errorf("failed to receive socket from systemd: %w", err)
+	}
+
+	if len(listeners) == 0 {
+		return nil, errors.New("did not receive any sockets from systemd")
+	}
+
+	if len(listeners) > 1 {
+		return nil, errors.New("received too many sockets from systemd")
+	}
+
+	return &socket{"(systemd)", listeners[0]}, nil
+}
diff --git a/backend/internal/bootstrap/systemd_socket_nonlinux.go b/backend/internal/bootstrap/systemd_socket_nonlinux.go
new file mode 100644
index 00000000..45dfb406
--- /dev/null
+++ b/backend/internal/bootstrap/systemd_socket_nonlinux.go
@@ -0,0 +1,9 @@
+//go:build !linux
+
+package bootstrap
+
+import "errors"
+
+func systemdSocket() (*socket, error) {
+	return nil, errors.New("systemd socket activation is only supported on Linux")
+}
diff --git a/backend/internal/utils/image/metadata.go b/backend/internal/utils/image/metadata.go
index 1ea59a77..9bf02dd0 100644
--- a/backend/internal/utils/image/metadata.go
+++ b/backend/internal/utils/image/metadata.go
@@ -96,7 +96,7 @@ func stripWEBPMetadata(data []byte) []byte {
 
 	// WEBP image can max be 4GB in size
 	riffSize := out.Len() - 8
-	if riffSize < 0 || riffSize > int(maxRIFFSize) {
+	if riffSize < 0 || uint64(riffSize) > uint64(maxRIFFSize) {
 		return data
 	}