diff --git a/commands/describe/broker.go b/commands/describe/broker.go
index e04cc86..370c053 100644
--- a/commands/describe/broker.go
+++ b/commands/describe/broker.go
@@ -1,7 +1,6 @@
 package describe
 
 import (
-	"encoding/json"
 	"fmt"
 	"regexp"
 	"sort"
@@ -79,7 +78,8 @@ func (b *broker) run(_ *kingpin.ParseContext) error {
 
 	switch b.format {
 	case commands.JsonFormat:
-		return b.printAsJson(meta)
+		data := meta.ToJson(b.includeLogs, b.includeAPIVersions, b.includeZeroLogs)
+		return output.PrintAsJson(data, b.style, b.globalParams.EnableColor)
 	case commands.TableFormat:
 		return b.printAsTable(meta)
 	case commands.ListFormat:
@@ -147,16 +147,6 @@ func (b *broker) printAsTable(meta *kafka.BrokerMeta) error {
 	return nil
 }
 
-func (b *broker) printAsJson(meta *kafka.BrokerMeta) error {
-	result, err := json.MarshalIndent(meta.ToJson(b.includeLogs, b.includeAPIVersions, b.includeZeroLogs), "", "  ")
-	if err != nil {
-		return err
-	}
-	h := internal.NewJsonHighlighter(b.style, b.globalParams.EnableColor)
-	fmt.Println(string(h.Highlight(result)))
-	return nil
-}
-
 func (b *broker) printLogsTable(logs []*kafka.LogFile) error {
 	for _, logFile := range logs {
 		sorted := logFile.SortByPermanentSize()
diff --git a/commands/describe/cluster.go b/commands/describe/cluster.go
index a4ddbbf..c2c97da 100644
--- a/commands/describe/cluster.go
+++ b/commands/describe/cluster.go
@@ -1,7 +1,6 @@
 package describe
 
 import (
-	"encoding/json"
 	"errors"
 	"fmt"
 	"sort"
@@ -9,7 +8,6 @@ import (
 	"gopkg.in/alecthomas/kingpin.v2"
 
 	"github.com/xitonix/trubka/commands"
-	"github.com/xitonix/trubka/internal"
 	"github.com/xitonix/trubka/internal/output"
 	"github.com/xitonix/trubka/internal/output/format"
 	"github.com/xitonix/trubka/internal/output/format/tabular"
@@ -67,7 +65,7 @@ func (c *cluster) run(_ *kingpin.ParseContext) error {
 
 	switch c.format {
 	case commands.JsonFormat:
-		return c.printAsJson(meta)
+		return output.PrintAsJson(meta, c.style, c.globalParams.EnableColor)
 	case commands.TableFormat:
 		return c.printAsTable(meta)
 	case commands.ListFormat:
@@ -132,13 +130,3 @@ func (c *cluster) printAsList(meta *kafka.ClusterMetadata, plain bool) error {
 
 	return nil
 }
-
-func (c *cluster) printAsJson(meta *kafka.ClusterMetadata) error {
-	result, err := json.MarshalIndent(meta, "", "  ")
-	if err != nil {
-		return err
-	}
-	h := internal.NewJsonHighlighter(c.style, c.globalParams.EnableColor)
-	fmt.Println(string(h.Highlight(result)))
-	return nil
-}
diff --git a/commands/describe/group.go b/commands/describe/group.go
index 53a4e7c..a19f5e6 100644
--- a/commands/describe/group.go
+++ b/commands/describe/group.go
@@ -1,14 +1,12 @@
 package describe
 
 import (
-	"encoding/json"
 	"fmt"
 	"strings"
 
 	"gopkg.in/alecthomas/kingpin.v2"
 
 	"github.com/xitonix/trubka/commands"
-	"github.com/xitonix/trubka/internal"
 	"github.com/xitonix/trubka/internal/output"
 	"github.com/xitonix/trubka/internal/output/format"
 	"github.com/xitonix/trubka/internal/output/format/list"
@@ -58,7 +56,8 @@ func (c *group) run(_ *kingpin.ParseContext) error {
 
 	switch c.format {
 	case commands.JsonFormat:
-		return c.printAsJson(cgd)
+		data := cgd.ToJson(c.includeMembers)
+		return output.PrintAsJson(data, c.style, c.globalParams.EnableColor)
 	case commands.TableFormat:
 		return c.printAsTable(cgd)
 	case commands.ListFormat:
@@ -115,16 +114,6 @@ func (c *group) printAsTable(details *kafka.ConsumerGroupDetails) error {
 	return nil
 }
 
-func (c *group) printAsJson(details *kafka.ConsumerGroupDetails) error {
-	result, err := json.MarshalIndent(details.ToJson(c.includeMembers), "", "  ")
-	if err != nil {
-		return err
-	}
-	h := internal.NewJsonHighlighter(c.style, c.globalParams.EnableColor)
-	fmt.Println(string(h.Highlight(result)))
-	return nil
-}
-
 func (c *group) printGroupDetails(details *kafka.ConsumerGroupDetails) {
 	fmt.Printf("         Name: %s\n  Coordinator: %s\n        State: %s\n     Protocol: %s\nProtocol Type: %s",
 		details.Name,
diff --git a/commands/describe/topic.go b/commands/describe/topic.go
index 04dab0d..71b8a44 100644
--- a/commands/describe/topic.go
+++ b/commands/describe/topic.go
@@ -2,7 +2,6 @@ package describe
 
 import (
 	"bytes"
-	"encoding/json"
 	"fmt"
 	"sort"
 	"strings"
@@ -11,7 +10,6 @@ import (
 	"gopkg.in/alecthomas/kingpin.v2"
 
 	"github.com/xitonix/trubka/commands"
-	"github.com/xitonix/trubka/internal"
 	"github.com/xitonix/trubka/internal/output"
 	"github.com/xitonix/trubka/internal/output/format"
 	"github.com/xitonix/trubka/internal/output/format/list"
@@ -73,7 +71,7 @@ func (t *topic) run(_ *kingpin.ParseContext) error {
 
 	switch t.format {
 	case commands.JsonFormat:
-		return t.printAsJson(meta)
+		return output.PrintAsJson(meta, t.style, t.globalParams.EnableColor)
 	case commands.TableFormat:
 		return t.printAsTable(meta)
 	case commands.ListFormat:
@@ -162,16 +160,6 @@ func (t *topic) printAsTable(meta *kafka.TopicMetadata) error {
 	return nil
 }
 
-func (t *topic) printAsJson(meta *kafka.TopicMetadata) error {
-	result, err := json.MarshalIndent(meta, "", "  ")
-	if err != nil {
-		return err
-	}
-	h := internal.NewJsonHighlighter(t.style, t.globalParams.EnableColor)
-	fmt.Println(string(h.Highlight(result)))
-	return nil
-}
-
 func (t *topic) brokersToList(brokers ...*kafka.Broker) string {
 	if len(brokers) == 1 {
 		return brokers[0].Host
diff --git a/commands/list/group_offsets.go b/commands/list/group_offsets.go
index aa372f7..3bbf63d 100644
--- a/commands/list/group_offsets.go
+++ b/commands/list/group_offsets.go
@@ -1,7 +1,6 @@
 package list
 
 import (
-	"encoding/json"
 	"fmt"
 	"regexp"
 	"strconv"
@@ -11,6 +10,7 @@ import (
 
 	"github.com/xitonix/trubka/commands"
 	"github.com/xitonix/trubka/internal"
+	"github.com/xitonix/trubka/internal/output"
 	"github.com/xitonix/trubka/internal/output/format"
 	"github.com/xitonix/trubka/internal/output/format/list"
 	"github.com/xitonix/trubka/internal/output/format/tabular"
@@ -62,7 +62,7 @@ func (g *groupOffset) run(_ *kingpin.ParseContext) error {
 
 	switch g.format {
 	case commands.JsonFormat:
-		return g.printAsJson(topics)
+		return output.PrintAsJson(topics.ToJson(), g.style, g.globalParams.EnableColor)
 	case commands.TableFormat:
 		return g.printAsTable(topics)
 	case commands.ListFormat:
@@ -132,13 +132,3 @@ func (g *groupOffset) printAsList(topics kafka.TopicPartitionOffset, plain bool)
 	}
 	return nil
 }
-
-func (g *groupOffset) printAsJson(topics kafka.TopicPartitionOffset) error {
-	result, err := json.MarshalIndent(topics.ToJson(), "", "  ")
-	if err != nil {
-		return err
-	}
-	h := internal.NewJsonHighlighter(g.style, g.globalParams.EnableColor)
-	fmt.Println(string(h.Highlight(result)))
-	return nil
-}
diff --git a/commands/list/groups.go b/commands/list/groups.go
index 3fa9d37..41b9791 100644
--- a/commands/list/groups.go
+++ b/commands/list/groups.go
@@ -1,7 +1,6 @@
 package list
 
 import (
-	"encoding/json"
 	"fmt"
 	"regexp"
 	"sort"
@@ -69,7 +68,11 @@ func (c *groups) run(_ *kingpin.ParseContext) error {
 
 	switch c.format {
 	case commands.JsonFormat:
-		return c.printAsJson(groups)
+		data := make([]interface{}, len(groups))
+		for i, g := range groups {
+			data[i] = g.ToJson(false)
+		}
+		return output.PrintAsJson(data, c.style, c.globalParams.EnableColor)
 	case commands.TableFormat:
 		return c.printAsTable(groups)
 	case commands.ListFormat:
@@ -141,17 +144,3 @@ func (c *groups) printAsTable(groups []*kafka.ConsumerGroupDetails) error {
 	table.Render()
 	return nil
 }
-
-func (c *groups) printAsJson(groups []*kafka.ConsumerGroupDetails) error {
-	data := make([]interface{}, len(groups))
-	for i, g := range groups {
-		data[i] = g.ToJson(false)
-	}
-	result, err := json.MarshalIndent(data, "", "  ")
-	if err != nil {
-		return err
-	}
-	h := internal.NewJsonHighlighter(c.style, c.globalParams.EnableColor)
-	fmt.Println(string(h.Highlight(result)))
-	return nil
-}
diff --git a/commands/list/list.go b/commands/list/list.go
index bed3b35..c2ab934 100644
--- a/commands/list/list.go
+++ b/commands/list/list.go
@@ -1,11 +1,9 @@
 package list
 
 import (
-	"github.com/dustin/go-humanize"
 	"gopkg.in/alecthomas/kingpin.v2"
 
 	"github.com/xitonix/trubka/commands"
-	"github.com/xitonix/trubka/internal"
 )
 
 func AddCommands(app *kingpin.Application, global *commands.GlobalParameters, kafkaParams *commands.KafkaParameters) {
@@ -16,14 +14,3 @@ func AddCommands(app *kingpin.Application, global *commands.GlobalParameters, ka
 	addLocalOffsetsSubCommand(parent, global, kafkaParams)
 	addLocalTopicsSubCommand(parent, global)
 }
-
-func highlightLag(input int64, colorEnabled bool) interface{} {
-	humanised := humanize.Comma(input)
-	if !colorEnabled {
-		return humanised
-	}
-	if input > 0 {
-		return internal.Yellow(humanised, true)
-	}
-	return internal.Green(humanised, true)
-}
diff --git a/commands/list/local_offsets.go b/commands/list/local_offsets.go
index 311419d..bae569b 100644
--- a/commands/list/local_offsets.go
+++ b/commands/list/local_offsets.go
@@ -1,14 +1,13 @@
 package list
 
 import (
-	"encoding/json"
 	"fmt"
 
 	"github.com/dustin/go-humanize"
 	"gopkg.in/alecthomas/kingpin.v2"
 
 	"github.com/xitonix/trubka/commands"
-	"github.com/xitonix/trubka/internal"
+	"github.com/xitonix/trubka/internal/output"
 	"github.com/xitonix/trubka/internal/output/format"
 	"github.com/xitonix/trubka/internal/output/format/list"
 	"github.com/xitonix/trubka/internal/output/format/tabular"
@@ -63,7 +62,7 @@ func (l *listLocalOffsets) run(_ *kingpin.ParseContext) error {
 
 	switch l.format {
 	case commands.JsonFormat:
-		return l.printAsJson(offsets)
+		return output.PrintAsJson(offsets.ToJson(), l.style, l.globalParams.EnableColor)
 	case commands.TableFormat:
 		return l.printAsTable(offsets)
 	case commands.ListFormat:
@@ -119,13 +118,3 @@ func (l *listLocalOffsets) printAsList(offsets kafka.PartitionOffset, plain bool
 	fmt.Printf("\nTotal Lag: %v", format.Warn(totalLag, l.globalParams.EnableColor, true))
 	return nil
 }
-
-func (l *listLocalOffsets) printAsJson(offsets kafka.PartitionOffset) error {
-	result, err := json.MarshalIndent(offsets.ToJson(), "", "  ")
-	if err != nil {
-		return err
-	}
-	h := internal.NewJsonHighlighter(l.style, l.globalParams.EnableColor)
-	fmt.Println(string(h.Highlight(result)))
-	return nil
-}
diff --git a/commands/list/local_topics.go b/commands/list/local_topics.go
index a1cf723..40a76d4 100644
--- a/commands/list/local_topics.go
+++ b/commands/list/local_topics.go
@@ -1,7 +1,6 @@
 package list
 
 import (
-	"encoding/json"
 	"fmt"
 	"regexp"
 	"sort"
@@ -54,7 +53,7 @@ func (l *listLocalTopics) run(_ *kingpin.ParseContext) error {
 
 	switch l.format {
 	case commands.JsonFormat:
-		return l.printAsJson(localStore)
+		return output.PrintAsJson(localStore, l.style, l.globalParams.EnableColor)
 	case commands.TableFormat:
 		return l.printAsTable(localStore)
 	case commands.ListFormat:
@@ -94,13 +93,3 @@ func (l *listLocalTopics) printAsList(store map[string][]string, plain bool) err
 	b.Render()
 	return nil
 }
-
-func (l *listLocalTopics) printAsJson(store map[string][]string) error {
-	result, err := json.MarshalIndent(store, "", "  ")
-	if err != nil {
-		return err
-	}
-	h := internal.NewJsonHighlighter(l.style, l.globalParams.EnableColor)
-	fmt.Println(string(h.Highlight(result)))
-	return nil
-}
diff --git a/commands/list/topics.go b/commands/list/topics.go
index 525dc25..ac8496d 100644
--- a/commands/list/topics.go
+++ b/commands/list/topics.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/xitonix/trubka/commands"
 	"github.com/xitonix/trubka/internal"
+	"github.com/xitonix/trubka/internal/output"
 	"github.com/xitonix/trubka/internal/output/format"
 	"github.com/xitonix/trubka/internal/output/format/list"
 	"github.com/xitonix/trubka/internal/output/format/tabular"
@@ -60,17 +61,20 @@ func (c *topics) run(_ *kingpin.ParseContext) error {
 	sort.Sort(kafka.TopicsByName(topics))
 
 	switch c.format {
-	case commands.ListFormat:
-		c.printAsList(topics, false)
+	case commands.JsonFormat:
+		return output.PrintAsJson(topics, c.style, c.globalParams.EnableColor)
 	case commands.TableFormat:
-		c.printAsTable(topics)
+		return c.printAsTable(topics)
+	case commands.ListFormat:
+		return c.printAsList(topics, false)
 	case commands.PlainTextFormat:
-		c.printAsList(topics, true)
+		return c.printAsList(topics, true)
+	default:
+		return nil
 	}
-	return nil
 }
 
-func (c *topics) printAsList(topics []kafka.Topic, plain bool) {
+func (c *topics) printAsList(topics []kafka.Topic, plain bool) error {
 	b := list.New(plain)
 	b.SetTitle(format.WithCount("Topics", len(topics)))
 	var totalPartitions int64
@@ -81,9 +85,10 @@ func (c *topics) printAsList(topics []kafka.Topic, plain bool) {
 	caption := fmt.Sprintf("SUMMARY: %s partitions in %s topics", humanize.Comma(totalPartitions), humanize.Comma(int64(len(topics))))
 	b.SetCaption(caption)
 	b.Render()
+	return nil
 }
 
-func (c *topics) printAsTable(topics []kafka.Topic) {
+func (c *topics) printAsTable(topics []kafka.Topic) error {
 	table := tabular.NewTable(c.globalParams.EnableColor,
 		tabular.C("Topic").Align(tabular.AlignLeft),
 		tabular.C("Number of Partitions").FAlign(tabular.AlignCenter),
@@ -98,4 +103,5 @@ func (c *topics) printAsTable(topics []kafka.Topic) {
 	}
 	table.AddFooter(fmt.Sprintf("Total: %s", humanize.Comma(int64(len(topics)))), humanize.Comma(totalPartitions), " ")
 	table.Render()
+	return nil
 }
diff --git a/internal/output/output.go b/internal/output/output.go
index 9ac22f9..b3f8b89 100644
--- a/internal/output/output.go
+++ b/internal/output/output.go
@@ -1,7 +1,10 @@
 package output
 
 import (
+	"encoding/json"
 	"fmt"
+
+	"github.com/xitonix/trubka/internal"
 )
 
 func NewLines(count int) {
@@ -9,3 +12,13 @@ func NewLines(count int) {
 		fmt.Println()
 	}
 }
+
+func PrintAsJson(data interface{}, style string, enableColor bool) error {
+	result, err := json.MarshalIndent(data, "", "  ")
+	if err != nil {
+		return err
+	}
+	h := internal.NewJsonHighlighter(style, enableColor)
+	fmt.Println(string(h.Highlight(result)))
+	return nil
+}
diff --git a/kafka/topic.go b/kafka/topic.go
index c09d1bb..a859835 100644
--- a/kafka/topic.go
+++ b/kafka/topic.go
@@ -3,9 +3,9 @@ package kafka
 import "fmt"
 
 type Topic struct {
-	Name               string
-	NumberOfPartitions int32
-	ReplicationFactor  int16
+	Name               string `json:"name"`
+	NumberOfPartitions int32  `json:"number_of_partitions"`
+	ReplicationFactor  int16  `json:"replication_factor"`
 }
 
 type TopicsByName []Topic