diff --git a/srt.go b/srt.go
index 2cbb323..a47321a 100644
--- a/srt.go
+++ b/srt.go
@@ -38,11 +38,11 @@ func ReadFromSRT(i io.Reader) (o *Subtitles, err error) {
 	o = NewSubtitles()
 	var scanner = bufio.NewScanner(i)
 
-	styles := StyleAttributes{}
 	// Scan
 	var line string
 	var lineNum int
 	var s = &Item{}
+	var sa = &StyleAttributes{}
 	for scanner.Scan() {
 		// Fetch line
 		line = strings.TrimSpace(scanner.Text())
@@ -59,9 +59,8 @@ func ReadFromSRT(i io.Reader) (o *Subtitles, err error) {
 
 		// Line contains time boundaries
 		if strings.Contains(line, srtTimeBoundariesSeparator) {
-
-			// reset styles
-			styles = StyleAttributes{}
+			// Reset style attributes
+			sa = &StyleAttributes{}
 
 			// Remove last item of previous subtitle since it should be the index.
 			// If the last line is empty then the item is missing an index.
@@ -123,8 +122,7 @@ func ReadFromSRT(i io.Reader) (o *Subtitles, err error) {
 			o.Items = append(o.Items, s)
 		} else {
 			// Add text
-			var l Line
-			if l, styles = parseTextSrt(line, styles); len(l.Items) > 0 {
+			if l := parseTextSrt(line, sa); len(l.Items) > 0 {
 				s.Lines = append(s.Lines, l)
 			}
 		}
@@ -133,12 +131,11 @@ func ReadFromSRT(i io.Reader) (o *Subtitles, err error) {
 }
 
 // parseTextSrt parses the input line to fill the Line
-func parseTextSrt(i string, styles StyleAttributes) (Line, StyleAttributes) {
+func parseTextSrt(i string, sa *StyleAttributes) (o Line) {
 	// special handling needed for empty line
-	o := Line{}
-	if i == "" {
+	if strings.TrimSpace(i) == "" {
 		o.Items = []LineItem{{Text: ""}}
-		return o, styles
+		return
 	}
 
 	// Create tokenizer
@@ -164,51 +161,51 @@ func parseTextSrt(i string, styles StyleAttributes) (Line, StyleAttributes) {
 			// Parse italic/bold/underline
 			switch token.Data {
 			case "b":
-				styles.SRTBold = false
+				sa.SRTBold = false
 			case "i":
-				styles.SRTItalics = false
+				sa.SRTItalics = false
 			case "u":
-				styles.SRTUnderline = false
+				sa.SRTUnderline = false
 			case "font":
-				styles.SRTColor = nil
+				sa.SRTColor = nil
 			}
 		case html.StartTagToken:
 			// Parse italic/bold/underline
 			switch token.Data {
 			case "b":
-				styles.SRTBold = true
+				sa.SRTBold = true
 			case "i":
-				styles.SRTItalics = true
+				sa.SRTItalics = true
 			case "u":
-				styles.SRTUnderline = true
+				sa.SRTUnderline = true
 			case "font":
 				if c := htmlTokenAttribute(&token, "color"); c != nil {
-					styles.SRTColor = c
+					sa.SRTColor = c
 				}
 			}
 		case html.TextToken:
 			if s := strings.TrimSpace(raw); s != "" {
 				// Get style attribute
-				var sa *StyleAttributes
-				if styles.SRTBold || styles.SRTColor != nil || styles.SRTItalics || styles.SRTUnderline {
-					sa = &StyleAttributes{
-						SRTBold:      styles.SRTBold,
-						SRTColor:     styles.SRTColor,
-						SRTItalics:   styles.SRTItalics,
-						SRTUnderline: styles.SRTUnderline,
+				var styleAttributes *StyleAttributes
+				if sa.SRTBold || sa.SRTColor != nil || sa.SRTItalics || sa.SRTUnderline {
+					styleAttributes = &StyleAttributes{
+						SRTBold:      sa.SRTBold,
+						SRTColor:     sa.SRTColor,
+						SRTItalics:   sa.SRTItalics,
+						SRTUnderline: sa.SRTUnderline,
 					}
-					sa.propagateSRTAttributes()
+					styleAttributes.propagateSRTAttributes()
 				}
 
 				// Append item
 				o.Items = append(o.Items, LineItem{
-					InlineStyle: sa,
+					InlineStyle: styleAttributes,
 					Text:        unescapeHTML(s),
 				})
 			}
 		}
 	}
-	return o, styles
+	return
 }
 
 // formatDurationSRT formats an .srt duration
diff --git a/webvtt.go b/webvtt.go
index 0b79dbf..af75a93 100644
--- a/webvtt.go
+++ b/webvtt.go
@@ -121,7 +121,6 @@ func ReadFromWebVTT(i io.Reader) (o *Subtitles, err error) {
 	var scanner = bufio.NewScanner(i)
 	var line string
 	var lineNum int
-	webVTTTagStack := make([]WebVTTTag, 0, 16)
 
 	// Skip the header
 	for scanner.Scan() {
@@ -142,7 +141,7 @@ func ReadFromWebVTT(i io.Reader) (o *Subtitles, err error) {
 	var blockName string
 	var comments []string
 	var index int
-	var webVTTStyles *StyleAttributes
+	var sa = &StyleAttributes{}
 
 	for scanner.Scan() {
 		// Fetch line
@@ -163,13 +162,14 @@ func ReadFromWebVTT(i io.Reader) (o *Subtitles, err error) {
 			// Reset block name, if we are not in the middle of CSS.
 			// If we are in STYLE block and the CSS is empty or we meet the right brace at the end of last line,
 			// then we are not in CSS and can switch to parse next WebVTT block.
-			if blockName != webvttBlockNameStyle || webVTTStyles == nil ||
-				len(webVTTStyles.WebVTTStyles) == 0 ||
-				strings.HasSuffix(webVTTStyles.WebVTTStyles[len(webVTTStyles.WebVTTStyles)-1], "}") {
+			if blockName != webvttBlockNameStyle || sa == nil ||
+				len(sa.WebVTTStyles) == 0 ||
+				strings.HasSuffix(sa.WebVTTStyles[len(sa.WebVTTStyles)-1], "}") {
 				blockName = ""
 			}
-			// Reset tag stack
-			webVTTTagStack = make([]WebVTTTag, 0, 16)
+
+			// Reset WebVTTTags
+			sa.WebVTTTags = []WebVTTTag{}
 
 		// Region
 		case strings.HasPrefix(line, "Region: "):
@@ -211,9 +211,9 @@ func ReadFromWebVTT(i io.Reader) (o *Subtitles, err error) {
 			blockName = webvttBlockNameStyle
 
 			if _, ok := o.Styles[webvttDefaultStyleID]; !ok {
-				webVTTStyles = &StyleAttributes{}
+				sa = &StyleAttributes{}
 				o.Styles[webvttDefaultStyleID] = &Style{
-					InlineStyle: webVTTStyles,
+					InlineStyle: sa,
 					ID:          webvttDefaultStyleID,
 				}
 			}
@@ -318,12 +318,11 @@ func ReadFromWebVTT(i io.Reader) (o *Subtitles, err error) {
 			case webvttBlockNameComment:
 				comments = append(comments, line)
 			case webvttBlockNameStyle:
-				webVTTStyles.WebVTTStyles = append(webVTTStyles.WebVTTStyles, line)
+				sa.WebVTTStyles = append(sa.WebVTTStyles, line)
 			case webvttBlockNameText:
 				// Parse line
-				if l, stack := parseTextWebVTT(line, webVTTTagStack); len(l.Items) > 0 {
+				if l := parseTextWebVTT(line, sa); len(l.Items) > 0 {
 					item.Lines = append(item.Lines, l)
-					webVTTTagStack = stack
 				}
 			default:
 				// This is the ID
@@ -335,10 +334,9 @@ func ReadFromWebVTT(i io.Reader) (o *Subtitles, err error) {
 }
 
 // parseTextWebVTT parses the input line to fill the Line
-func parseTextWebVTT(i string, webVTTTagStack []WebVTTTag) (Line, []WebVTTTag) {
+func parseTextWebVTT(i string, sa *StyleAttributes) (o Line) {
 	// Create tokenizer
 	tr := html.NewTokenizer(strings.NewReader(i))
-	o := Line{}
 
 	// Loop
 	for {
@@ -352,8 +350,8 @@ func parseTextWebVTT(i string, webVTTTagStack []WebVTTTag) (Line, []WebVTTTag) {
 		switch t {
 		case html.EndTagToken:
 			// Pop the top of stack if we meet end tag
-			if len(webVTTTagStack) > 0 {
-				webVTTTagStack = webVTTTagStack[:len(webVTTTagStack)-1]
+			if len(sa.WebVTTTags) > 0 {
+				sa.WebVTTTags = sa.WebVTTTags[:len(sa.WebVTTTags)-1]
 			}
 		case html.StartTagToken:
 			if matches := webVTTRegexpTag.FindStringSubmatch(string(tr.Raw())); len(matches) > 4 {
@@ -381,7 +379,7 @@ func parseTextWebVTT(i string, webVTTTagStack []WebVTTTag) (Line, []WebVTTTag) {
 				}
 
 				// Push the tag to stack
-				webVTTTagStack = append(webVTTTagStack, WebVTTTag{
+				sa.WebVTTTags = append(sa.WebVTTTags, WebVTTTag{
 					Name:       tagName,
 					Classes:    classes,
 					Annotation: annotation,
@@ -390,21 +388,21 @@ func parseTextWebVTT(i string, webVTTTagStack []WebVTTTag) (Line, []WebVTTTag) {
 
 		case html.TextToken:
 			// Get style attribute
-			var sa *StyleAttributes
-			if len(webVTTTagStack) > 0 {
-				tags := make([]WebVTTTag, len(webVTTTagStack))
-				copy(tags, webVTTTagStack)
-				sa = &StyleAttributes{
+			var styleAttributes *StyleAttributes
+			if len(sa.WebVTTTags) > 0 {
+				tags := make([]WebVTTTag, len(sa.WebVTTTags))
+				copy(tags, sa.WebVTTTags)
+				styleAttributes = &StyleAttributes{
 					WebVTTTags: tags,
 				}
-				sa.propagateWebVTTAttributes()
+				styleAttributes.propagateWebVTTAttributes()
 			}
 
 			// Append items
-			o.Items = append(o.Items, parseTextWebVTTTextToken(sa, string(tr.Raw()))...)
+			o.Items = append(o.Items, parseTextWebVTTTextToken(styleAttributes, string(tr.Raw()))...)
 		}
 	}
-	return o, webVTTTagStack
+	return
 }
 
 func parseTextWebVTTTextToken(sa *StyleAttributes, line string) (ret []LineItem) {
diff --git a/webvtt_internal_test.go b/webvtt_internal_test.go
index 6845ffd..a81f224 100644
--- a/webvtt_internal_test.go
+++ b/webvtt_internal_test.go
@@ -13,7 +13,7 @@ func TestParseTextWebVTT(t *testing.T) {
 	t.Run("When both voice tags are available", func(t *testing.T) {
 		testData := `<v Bob>Correct tag</v>`
 
-		s, _ := parseTextWebVTT(testData, make([]WebVTTTag, 0, 16))
+		s := parseTextWebVTT(testData, &StyleAttributes{})
 		assert.Equal(t, "Bob", s.VoiceName)
 		assert.Equal(t, 1, len(s.Items))
 		assert.Equal(t, "Correct tag", s.Items[0].Text)
@@ -22,7 +22,7 @@ func TestParseTextWebVTT(t *testing.T) {
 	t.Run("When there is no end tag", func(t *testing.T) {
 		testData := `<v Bob> Text without end tag`
 
-		s, _ := parseTextWebVTT(testData, make([]WebVTTTag, 0, 16))
+		s := parseTextWebVTT(testData, &StyleAttributes{})
 		assert.Equal(t, "Bob", s.VoiceName)
 		assert.Equal(t, 1, len(s.Items))
 		assert.Equal(t, "Text without end tag", s.Items[0].Text)
@@ -31,7 +31,7 @@ func TestParseTextWebVTT(t *testing.T) {
 	t.Run("When the end tag is correct", func(t *testing.T) {
 		testData := `<v Bob>Incorrect end tag</vi>`
 
-		s, _ := parseTextWebVTT(testData, make([]WebVTTTag, 0, 16))
+		s := parseTextWebVTT(testData, &StyleAttributes{})
 		assert.Equal(t, "Bob", s.VoiceName)
 		assert.Equal(t, 1, len(s.Items))
 		assert.Equal(t, "Incorrect end tag", s.Items[0].Text)
@@ -40,7 +40,7 @@ func TestParseTextWebVTT(t *testing.T) {
 	t.Run("When inline timestamps are included", func(t *testing.T) {
 		testData := `<00:01:01.000>With inline <00:01:02.000>timestamps`
 
-		s, _ := parseTextWebVTT(testData, make([]WebVTTTag, 0, 16))
+		s := parseTextWebVTT(testData, &StyleAttributes{})
 		assert.Equal(t, 2, len(s.Items))
 		assert.Equal(t, "With inline", s.Items[0].Text)
 		assert.Equal(t, time.Minute+time.Second, s.Items[0].StartAt)
@@ -51,7 +51,7 @@ func TestParseTextWebVTT(t *testing.T) {
 	t.Run("When inline timestamps together", func(t *testing.T) {
 		testData := `<00:01:01.000><00:01:02.000>With timestamp tags together`
 
-		s, _ := parseTextWebVTT(testData, make([]WebVTTTag, 0, 16))
+		s := parseTextWebVTT(testData, &StyleAttributes{})
 		assert.Equal(t, 1, len(s.Items))
 		assert.Equal(t, "With timestamp tags together", s.Items[0].Text)
 		assert.Equal(t, time.Minute+2*time.Second, s.Items[0].StartAt)
@@ -60,7 +60,7 @@ func TestParseTextWebVTT(t *testing.T) {
 	t.Run("When inline timestamps is at end", func(t *testing.T) {
 		testData := `With end timestamp<00:01:02.000>`
 
-		s, _ := parseTextWebVTT(testData, make([]WebVTTTag, 0, 16))
+		s := parseTextWebVTT(testData, &StyleAttributes{})
 		assert.Equal(t, 1, len(s.Items))
 		assert.Equal(t, "With end timestamp", s.Items[0].Text)
 		assert.Equal(t, time.Duration(0), s.Items[0].StartAt)