diff --git a/cmd/deckcolor/main.go b/cmd/deckcolor/main.go
index 40db735..a9bfa0f 100644
--- a/cmd/deckcolor/main.go
+++ b/cmd/deckcolor/main.go
@@ -98,7 +98,7 @@ func main() {
 		draw.Draw(img, img.Bounds(), &image.Uniform{bg}, image.Point{}, draw.Src)
 		charW := font.MeasureString(stripFont, "0").Ceil()
 		pad := 8
-		for e := 0; e < count; e++ {
+		for e := range count {
 			ci := p.Start + e
 			ch := channels[ci]
 			cc := ch.Color
@@ -107,10 +107,7 @@ func main() {
 			valStr := fmt.Sprintf("%03d %02x", ch.Value, ch.Value)
 			nameW := font.MeasureString(stripFont, ch.Name).Ceil()
 			valW := font.MeasureString(stripFont, valStr).Ceil()
-			textW := nameW
-			if valW > textW {
-				textW = valW
-			}
+			textW := max(valW, nameW)
 			x0 := mid - textW/2 - pad
 			x1 := mid + textW/2 + pad
 
@@ -155,8 +152,8 @@ func main() {
 			if i == page {
 				img := image.NewRGBA(image.Rect(0, 0, sz, sz))
 				draw.Draw(img, img.Bounds(), txt, image.Point{}, draw.Src)
-				for y := 0; y < sz; y++ {
-					for x := 0; x < sz; x++ {
+				for y := range sz {
+					for x := range sz {
 						if x < b || x >= sz-b || y < b || y >= sz-b {
 							img.Set(x, y, color.RGBA{255, 255, 255, 255})
 						}
diff --git a/cmd/qrunproxy/show.go b/cmd/qrunproxy/show.go
index 25a2270..d03bdb4 100644
--- a/cmd/qrunproxy/show.go
+++ b/cmd/qrunproxy/show.go
@@ -1,5 +1,7 @@
 package main
 
+import "strings"
+
 import "fmt"
 
 type Show struct {
@@ -30,11 +32,12 @@ type Trigger struct {
 }
 
 func (t *Trigger) String() string {
-	s := fmt.Sprintf("%s/%s ->", t.Source.Block, t.Source.Signal)
+	var s strings.Builder
+	s.WriteString(fmt.Sprintf("%s/%s ->", t.Source.Block, t.Source.Signal))
 	for _, target := range t.Targets {
-		s += fmt.Sprintf(" %s/%s", target.Block, target.Hook)
+		s.WriteString(fmt.Sprintf(" %s/%s", target.Block, target.Hook))
 	}
-	return s
+	return s.String()
 }
 
 type TriggerSource struct {
diff --git a/cmd/qrunproxy/timeline.go b/cmd/qrunproxy/timeline.go
index 5daa4a9..3b4ab7c 100644
--- a/cmd/qrunproxy/timeline.go
+++ b/cmd/qrunproxy/timeline.go
@@ -49,12 +49,7 @@ func (t *TimelineTrack) cellTypeAt(index int, types ...CellType) bool {
 	if index < 0 || index >= len(t.Cells) {
 		return false
 	}
-	for _, typ := range types {
-		if t.Cells[index].Type == typ {
-			return true
-		}
-	}
-	return false
+	return slices.Contains(types, t.Cells[index].Type)
 }
 
 func (c *TimelineCell) String() string {
@@ -98,14 +93,15 @@ func (g exclusiveGroup) satisfied(tracks []*TimelineTrack) bool {
 }
 
 func (g exclusiveGroup) String() string {
-	s := "exclusive("
+	var s strings.Builder
+	s.WriteString("exclusive(")
 	for i, m := range g.members {
 		if i > 0 {
-			s += ", "
+			s.WriteString(", ")
 		}
-		s += m.String()
+		s.WriteString(m.String())
 	}
-	return s + ")"
+	return s.String() + ")"
 }
 
 func (tl *Timeline) debugf(format string, args ...any) {
diff --git a/cmd/xtouchtest/main.go b/cmd/xtouchtest/main.go
index 6c604c3..f27190d 100644
--- a/cmd/xtouchtest/main.go
+++ b/cmd/xtouchtest/main.go
@@ -69,7 +69,7 @@ func main() {
 		os.Exit(1)
 	}
 
-	for i := uint8(0); i < 8; i++ {
+	for i := range uint8(8) {
 		updateLCD(out, i)
 	}
 
diff --git a/lib/streamdeck/streamdeck.go b/lib/streamdeck/streamdeck.go
index 94fd55b..77c34d3 100644
--- a/lib/streamdeck/streamdeck.go
+++ b/lib/streamdeck/streamdeck.go
@@ -38,13 +38,13 @@ var ModelXL = Model{
 }
 
 var ModelPlus = Model{
-	Name:     "Plus",
-	Keys:     8,
-	KeyRows:  2,
-	KeyCols:  4,
-	KeySize:  120,
-	Encoders: 4,
-	LCDWidth: 800,
+	Name:      "Plus",
+	Keys:      8,
+	KeyRows:   2,
+	KeyCols:   4,
+	KeySize:   120,
+	Encoders:  4,
+	LCDWidth:  800,
 	LCDHeight: 100,
 }
 
@@ -101,10 +101,10 @@ func OpenModel(m *Model) (*Device, error) {
 	return &Device{dev: dev, model: m}, nil
 }
 
-func (d *Device) Model() *Model     { return d.model }
-func (d *Device) Close() error      { return d.dev.Close() }
+func (d *Device) Model() *Model        { return d.model }
+func (d *Device) Close() error         { return d.dev.Close() }
 func (d *Device) SerialNumber() string { return d.dev.SerialNumber() }
-func (d *Device) Product() string    { return d.dev.Product() }
+func (d *Device) Product() string      { return d.dev.Product() }
 
 func (d *Device) FirmwareVersion() (string, error) {
 	buf, err := d.dev.GetFeatureReport(5)
@@ -150,8 +150,8 @@ func (d *Device) SetKeyImage(key int, img image.Image) error {
 	var src image.Image = scaled
 	if d.model.FlipKeys {
 		flipped := image.NewRGBA(scaled.Bounds())
-		for y := 0; y < sz; y++ {
-			for x := 0; x < sz; x++ {
+		for y := range sz {
+			for x := range sz {
 				flipped.Set(sz-1-x, sz-1-y, scaled.At(x, y))
 			}
 		}
diff --git a/lib/streamdeck/text.go b/lib/streamdeck/text.go
index cc93d1e..d410d4a 100644
--- a/lib/streamdeck/text.go
+++ b/lib/streamdeck/text.go
@@ -108,11 +108,11 @@ type TextSpan struct {
 func DrawOutlinedSpans(img *image.RGBA, face font.Face, defaultOutline color.Color, thickness int, lines ...[]TextSpan) {
 	var full []string
 	for _, line := range lines {
-		s := ""
+		var s strings.Builder
 		for _, span := range line {
-			s += span.Text
+			s.WriteString(span.Text)
 		}
-		full = append(full, s)
+		full = append(full, s.String())
 	}
 
 	metrics := face.Metrics()