diff --git a/CHANGELOG.md b/CHANGELOG.md
index 30e3b58..1dadceb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## [0.0.3] - 2024-03-11
+
+- ✨ Add JSON formatter
+- 💥 Breaking change: renamed output.stdout.config value formatter to format
+
 ## [0.0.2] - 2024-03-09
 
 - ✨ Use plain formatter to output entry from drop
diff --git a/README.md b/README.md
index 24eae91..8b4aa0c 100644
--- a/README.md
+++ b/README.md
@@ -123,7 +123,7 @@ Each separate output has its own set of configuration. So, replace `which-one` w
 
 *This section may change in the near future. We're considering supporting multiple formats.*
 
-- `formatter`: Which formatter to use when outputting data. This value is used by `my-log drop` to output the new entry.
+- `format`: Which formatter to use when outputting data. This value is also used by `my-log drop` to output the new entry.
 
 ### `[formatters]`
 
@@ -144,7 +144,7 @@ Some formatters may have custom configuration.
     + [ ] filter to specific logs
     + [ ] stdout
         - [x] plain text
-        - [ ] JSON
+        - [x] JSON
         - [ ] YAML
         - [ ] Other formats? Submit an issue!
     + [ ] file output
diff --git a/cmd/drop.go b/cmd/drop.go
index 658cb7c..d74917e 100644
--- a/cmd/drop.go
+++ b/cmd/drop.go
@@ -42,18 +42,17 @@ var dropCmd = &cobra.Command{
 	RunE: func(cmd *cobra.Command, args []string) error {
 		log := args[0]
 		title := args[1]
-		e := models.PartialEntry()
+		ms := &models.Metas{}
 		if len(j.RawMessage) > 8 {
-			err := json.Unmarshal([]byte(j.RawMessage), &e)
+			err := json.Unmarshal([]byte(j.RawMessage), ms)
 			if err != nil {
 				return err
 			}
 		}
 		for k, v := range fields {
-			e.Fields = append(e.Fields, models.Meta{k, tools.ParseString(v)})
+			ms.AppendTo(k, tools.ParseString(v))
 		}
-		e.Title = title
-		e.Date = d.t
+		e := models.Entry{title, d.t, *ms}
 		l := models.Log{log, []models.Entry{e}}
 		err := files.Append(l)
 		if err != nil {
@@ -68,7 +67,10 @@ var dropCmd = &cobra.Command{
 		if err != nil {
 			return err
 		}
-		fmt.Fprintf(cmd.OutOrStdout(), "%s\n", out)
+		if len(out) > 0 && out[len(out)-1] != 10 {
+			out = append(out, 10)
+		}
+		fmt.Fprintf(cmd.OutOrStdout(), "%s", out)
 
 		return nil
 	},
diff --git a/cmd/root.go b/cmd/root.go
index 7e7bbbd..44de5f0 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -50,7 +50,7 @@ func init() {
 	// will be global for your application.
 
 	rootCmd.PersistentFlags().StringVarP(&config.ConfigPath, "config", "c", config.ConfigPath, "config file")
-	rootCmd.PersistentFlags().StringToStringVarP(&config.Overrides, "config-value", "v", config.Overrides, "Override config values. Use dot syntax to specify key. E.g. -v output.stdout.config.formatter=json")
+	rootCmd.PersistentFlags().StringToStringVarP(&config.Overrides, "config-value", "v", config.Overrides, "Override config values. Use dot syntax to specify key. E.g. -v output.stdout.config.format=json")
 
 	// Cobra also supports local flags, which will only run
 	// when this action is called directly.
diff --git a/config/default.go b/config/default.go
index 76ef8d2..8f93873 100644
--- a/config/default.go
+++ b/config/default.go
@@ -28,7 +28,7 @@ dotFolder = true
 enabled = true
 [output.stdout.config]
 # Formatter to use when outputting to stdout
-formatter = "plain"
+format = "plain"
 
 [formatters]
 
diff --git a/config/load_test.go b/config/load_test.go
index 51e024e..eab7c94 100644
--- a/config/load_test.go
+++ b/config/load_test.go
@@ -70,14 +70,14 @@ func TestStdoutMissing(t *testing.T) {
 }
 
 func TestStdoutLoad(t *testing.T) {
-	os.Setenv("LOG_STDOUT_FORMATTER", "json")
-	defer os.Unsetenv("LOG_STDOUT_FORMATTER")
+	os.Setenv("LOG_STDOUT_FORMAT", "json")
+	defer os.Unsetenv("LOG_STDOUT_FORMAT")
 	os.Setenv("LOG_STDOUT_ENABLED", "true")
 	defer os.Unsetenv("LOG_STDOUT_ENABLED")
 	c, _ := Load()
 	std, en := c.Outputs.Stdout()
 	assert.True(t, en)
-	assert.Equal(t, "json", std.Formatter)
+	assert.Equal(t, "json", std.Format)
 }
 
 func TestFormatJson(t *testing.T) {
diff --git a/config/types.go b/config/types.go
index a950a80..58fb2c4 100644
--- a/config/types.go
+++ b/config/types.go
@@ -21,7 +21,7 @@ type Output struct {
 }
 
 type Stdout struct {
-	Formatter string `env:"LOG_STDOUT_FORMATTER" mapstructure:"formatter"`
+	Format string `env:"LOG_STDOUT_FORMAT" mapstructure:"format"`
 }
 
 type stdoutEnabled struct {
diff --git a/formatters/interface.go b/formatters/interface.go
index 4276aed..5478572 100644
--- a/formatters/interface.go
+++ b/formatters/interface.go
@@ -4,6 +4,7 @@ import "codeberg.org/danjones000/my-log/models"
 
 type Formatter interface {
 	Name() string
+	Logs([]models.Log) (out []byte, err error)
 	Log(models.Log) (out []byte, err error)
 	Entry(models.Entry) (out []byte, err error)
 	Meta(models.Meta) (out []byte, err error)
diff --git a/formatters/json.go b/formatters/json.go
new file mode 100644
index 0000000..d56854d
--- /dev/null
+++ b/formatters/json.go
@@ -0,0 +1,77 @@
+package formatters
+
+import (
+	"bytes"
+	"encoding/json"
+	"time"
+
+	"codeberg.org/danjones000/my-log/config"
+	"codeberg.org/danjones000/my-log/models"
+)
+
+func newJson(ff config.Formatters) (Formatter, error) {
+	return &Json{ff.Json().PrettyPrint}, nil
+}
+
+type Json struct {
+	prettPrint bool
+}
+
+func (js *Json) Name() string {
+	return "json"
+}
+
+func (js *Json) marshal(v any) (o []byte, err error) {
+	o, err = json.Marshal(v)
+	if err != nil {
+		return
+	}
+	if js.prettPrint {
+		buff := &bytes.Buffer{}
+		err = json.Indent(buff, o, "", "\t")
+		if err == nil {
+			o = buff.Bytes()
+		}
+	}
+	return
+}
+
+func (js *Json) Meta(m models.Meta) ([]byte, error) {
+	o := map[string]any{m.Key: m.Value}
+	return js.marshal(o)
+}
+
+func (js *Json) entryMap(e models.Entry) map[string]any {
+	o := map[string]any{
+		"title": e.Title,
+		"date":  e.Date.Format(time.RFC3339),
+	}
+	for _, m := range e.Fields {
+		o[m.Key] = m.Value
+	}
+	return o
+}
+
+func (js *Json) Entry(e models.Entry) ([]byte, error) {
+	return js.marshal(js.entryMap(e))
+}
+
+func (js *Json) Log(l models.Log) ([]byte, error) {
+	return js.Logs([]models.Log{l})
+}
+
+func (js *Json) Logs(logs []models.Log) (out []byte, err error) {
+	if len(logs) == 0 {
+		return
+	}
+
+	o := map[string][]map[string]any{}
+	for _, l := range logs {
+		es := []map[string]any{}
+		for _, e := range l.Entries {
+			es = append(es, js.entryMap(e))
+		}
+		o[l.Name] = es
+	}
+	return js.marshal(o)
+}
diff --git a/formatters/json_test.go b/formatters/json_test.go
new file mode 100644
index 0000000..da6f111
--- /dev/null
+++ b/formatters/json_test.go
@@ -0,0 +1,81 @@
+package formatters
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"codeberg.org/danjones000/my-log/models"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestJsonName(t *testing.T) {
+	f, _ := New("json")
+	assert.Equal(t, "json", f.Name())
+}
+
+func TestJsonMeta(t *testing.T) {
+	f, _ := New("json")
+	m := models.Meta{"foo", 42}
+	exp := `{"foo":42}`
+	o, err := f.Meta(m)
+	assert.NoError(t, err)
+	assert.JSONEq(t, exp, string(o))
+}
+
+func TestJsonEntry(t *testing.T) {
+	when := time.Now()
+	f, _ := New("json")
+	m := models.Meta{"foo", 42}
+	e := models.Entry{
+		Title:  "Homer",
+		Date:   when,
+		Fields: []models.Meta{m},
+	}
+	exp := fmt.Sprintf(`{"title":"%s","date":"%s","foo":42}`, e.Title, when.Format(time.RFC3339))
+	o, err := f.Entry(e)
+	assert.NoError(t, err)
+	assert.JSONEq(t, exp, string(o))
+}
+
+func TestJsonLog(t *testing.T) {
+	when := time.Now()
+	f, _ := New("json")
+	m := models.Meta{"foo", 42}
+	e := models.Entry{
+		Title:  "Homer",
+		Date:   when,
+		Fields: []models.Meta{m},
+	}
+	l := models.Log{"stuff", []models.Entry{e}}
+	exp := fmt.Sprintf(`{"%s":[{"title":"%s","date":"%s","foo":42}]}`, l.Name, e.Title, when.Format(time.RFC3339))
+	o, err := f.Log(l)
+	assert.NoError(t, err)
+	assert.JSONEq(t, exp, string(o))
+}
+
+func TestJsonNoLogs(t *testing.T) {
+	f, _ := New("json")
+	o, err := f.Logs([]models.Log{})
+	var exp []byte
+	assert.NoError(t, err)
+	assert.Equal(t, exp, o)
+}
+
+func TestJsonErr(t *testing.T) {
+	f, _ := New("json")
+	o, err := f.Meta(models.Meta{"foo", make(chan bool)})
+	var exp []byte
+	assert.Error(t, err)
+	assert.Equal(t, exp, o)
+}
+
+func TestJsonPretty(t *testing.T) {
+	f := Json{true}
+	o, err := f.Meta(models.Meta{"foo", 42})
+	exp := `{
+	"foo": 42
+}`
+	assert.NoError(t, err)
+	assert.Equal(t, exp, string(o))
+}
diff --git a/formatters/new.go b/formatters/new.go
index d88a9d0..bade49b 100644
--- a/formatters/new.go
+++ b/formatters/new.go
@@ -10,6 +10,8 @@ type formatMaker func(config.Formatters) (Formatter, error)
 
 var formatterMap = map[string]formatMaker{
 	"plain": newPlain,
+	"json":  newJson,
+	"zero":  newNull,
 }
 
 func Preferred() (f Formatter, err error) {
@@ -18,8 +20,7 @@ func Preferred() (f Formatter, err error) {
 		return
 	}
 	std, _ := conf.Outputs.Stdout()
-	kind := std.Formatter
-	return New(kind)
+	return New(std.Format)
 }
 
 func New(kind string) (f Formatter, err error) {
diff --git a/formatters/new_test.go b/formatters/new_test.go
index 04b40fb..ed56be3 100644
--- a/formatters/new_test.go
+++ b/formatters/new_test.go
@@ -10,7 +10,7 @@ import (
 )
 
 func TestKinds(t *testing.T) {
-	assert.Equal(t, []string{"plain"}, Kinds())
+	assert.ElementsMatch(t, []string{"plain", "json", "zero"}, Kinds())
 }
 
 func TestNewUnsupported(t *testing.T) {
diff --git a/formatters/null.go b/formatters/null.go
new file mode 100644
index 0000000..4dd1775
--- /dev/null
+++ b/formatters/null.go
@@ -0,0 +1,32 @@
+package formatters
+
+import (
+	"codeberg.org/danjones000/my-log/config"
+	"codeberg.org/danjones000/my-log/models"
+)
+
+func newNull(ff config.Formatters) (Formatter, error) {
+	return &Null{}, nil
+}
+
+type Null struct{}
+
+func (n *Null) Name() string {
+	return "zero"
+}
+
+func (n *Null) Meta(m models.Meta) (o []byte, err error) {
+	return
+}
+
+func (n *Null) Entry(e models.Entry) (o []byte, err error) {
+	return
+}
+
+func (n *Null) Log(l models.Log) (o []byte, err error) {
+	return
+}
+
+func (n *Null) Logs(logs []models.Log) (out []byte, err error) {
+	return
+}
diff --git a/formatters/null_test.go b/formatters/null_test.go
new file mode 100644
index 0000000..f7c26c1
--- /dev/null
+++ b/formatters/null_test.go
@@ -0,0 +1,45 @@
+package formatters
+
+import (
+	"testing"
+	"time"
+
+	"codeberg.org/danjones000/my-log/models"
+	"github.com/stretchr/testify/assert"
+)
+
+var empty []byte
+
+func TestNullName(t *testing.T) {
+	f, err := New("zero")
+	assert.NoError(t, err)
+	assert.Equal(t, "zero", f.Name())
+}
+
+func TestNullMeta(t *testing.T) {
+	f, _ := New("zero")
+	o, err := f.Meta(models.Meta{"foo", 42})
+	assert.NoError(t, err)
+	assert.Equal(t, empty, o)
+}
+
+func TestNullEntry(t *testing.T) {
+	f, _ := New("zero")
+	o, err := f.Entry(models.Entry{"title", time.Now(), models.Metas{}})
+	assert.NoError(t, err)
+	assert.Equal(t, empty, o)
+}
+
+func TestNullLog(t *testing.T) {
+	f, _ := New("zero")
+	o, err := f.Log(models.Log{"jim", []models.Entry{{"title", time.Now(), models.Metas{}}}})
+	assert.NoError(t, err)
+	assert.Equal(t, empty, o)
+}
+
+func TestNullLogs(t *testing.T) {
+	f, _ := New("zero")
+	o, err := f.Logs([]models.Log{{"jim", []models.Entry{{"title", time.Now(), models.Metas{}}}}})
+	assert.NoError(t, err)
+	assert.Equal(t, empty, o)
+}
diff --git a/formatters/plain.go b/formatters/plain.go
index ed8ee82..2b79f00 100644
--- a/formatters/plain.go
+++ b/formatters/plain.go
@@ -20,6 +20,26 @@ func (pt *PlainText) Name() string {
 	return "plain"
 }
 
+func (pt *PlainText) Logs(logs []models.Log) (out []byte, err error) {
+	if len(logs) == 0 {
+		return
+	}
+
+	buff := &bytes.Buffer{}
+	first := true
+	for _, log := range logs {
+		o, _ := pt.Log(log)
+		if !first {
+			buff.WriteByte(10)
+			buff.WriteByte(10)
+		}
+		first = false
+		buff.Write(o)
+	}
+	out = buff.Bytes()
+	return
+}
+
 func (pt *PlainText) Log(log models.Log) (out []byte, err error) {
 	if len(log.Entries) == 0 {
 		return
diff --git a/formatters/plain_test.go b/formatters/plain_test.go
index e384101..487550f 100644
--- a/formatters/plain_test.go
+++ b/formatters/plain_test.go
@@ -13,7 +13,7 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestPlainLog(t *testing.T) {
+func TestPlainLogs(t *testing.T) {
 	m := []models.Meta{
 		{"foo", "bar"},
 		{"baz", 42},
@@ -23,11 +23,17 @@ func TestPlainLog(t *testing.T) {
 		{Title: "small", Date: time.Now()},
 	}
 	l := models.Log{"stuff", e}
+	e2 := models.Entry{
+		Title: "three",
+		Date:  time.Now(),
+	}
+	l2 := models.Log{"more-stuff", []models.Entry{e2}}
+	logs := []models.Log{l, l2}
 
 	f, err := New("plain")
 	require.NoError(t, err)
 
-	out, err := f.Log(l)
+	out, err := f.Logs(logs)
 	require.NoError(t, err)
 
 	read := bytes.NewReader(out)
@@ -67,6 +73,24 @@ func TestPlainLog(t *testing.T) {
 	line = scan.Text()
 	assert.Equal(t, "Date: "+e[1].Date.Format(tools.DateFormat), line)
 
+	scan.Scan()
+	scan.Scan()
+	line = scan.Text()
+	assert.Equal(t, l2.Name, line)
+
+	scan.Scan()
+	line = scan.Text()
+	assert.Equal(t, "#######", line)
+
+	scan.Scan()
+	scan.Scan()
+	line = scan.Text()
+	assert.Equal(t, "Title: "+e2.Title, line)
+
+	scan.Scan()
+	line = scan.Text()
+	assert.Equal(t, "Date: "+e2.Date.Format(tools.DateFormat), line)
+
 	more := scan.Scan()
 	assert.False(t, more)
 }
@@ -76,6 +100,13 @@ func TestPlainName(t *testing.T) {
 	assert.Equal(t, "plain", f.Name())
 }
 
+func TestPlainLogNone(t *testing.T) {
+	f, _ := New("plain")
+	out, err := f.Logs([]models.Log{})
+	assert.NoError(t, err)
+	assert.Len(t, out, 0)
+}
+
 func TestPlainLogNoEntries(t *testing.T) {
 	f, _ := New("plain")
 	out, err := f.Log(models.Log{Name: "foo"})
diff --git a/models/entry.go b/models/entry.go
index 5a19933..2a11fd2 100644
--- a/models/entry.go
+++ b/models/entry.go
@@ -16,14 +16,9 @@ import (
 const DateFormat = tools.DateFormat
 
 type Entry struct {
-	Title       string
-	Date        time.Time
-	Fields      []Meta
-	skipMissing bool
-}
-
-func PartialEntry() Entry {
-	return Entry{skipMissing: true}
+	Title  string
+	Date   time.Time
+	Fields Metas
 }
 
 type metaRes struct {
@@ -42,9 +37,9 @@ func (e Entry) getFieldMarshalChan() chan metaRes {
 			defer wg.Done()
 			if m.Key == "json" {
 				if j, ok := m.Value.(json.RawMessage); ok {
-					sub := Entry{skipMissing: true}
+					sub := Metas{}
 					json.Unmarshal(j, &sub)
-					for _, subM := range sub.Fields {
+					for _, subM := range sub {
 						o, er := subM.MarshalText()
 						ch <- metaRes{o, er}
 					}
@@ -160,9 +155,9 @@ func (e *Entry) getFieldUnarshalChan(in []byte) chan Meta {
 			if err == nil {
 				if m.Key == "json" {
 					if j, ok := m.Value.(json.RawMessage); ok {
-						sub := Entry{skipMissing: true}
-						json.Unmarshal(j, &sub)
-						for _, subM := range sub.Fields {
+						ms := Metas{}
+						json.Unmarshal(j, &ms)
+						for _, subM := range ms {
 							ch <- subM
 						}
 					}
@@ -191,26 +186,8 @@ func (e Entry) MarshalJSON() ([]byte, error) {
 	out := map[string]any{}
 	out["title"] = e.Title
 	out["date"] = e.Date.Format(time.RFC3339)
-	for _, f := range e.Fields {
-		if _, ok := out[f.Key]; !ok {
-			if f.Key == "json" {
-				ob := map[string]any{}
-				if j, ok := f.Value.(json.RawMessage); ok {
-					json.Unmarshal(j, &ob)
-				}
-				// If we couldn't get valid data from there, this will just be empty
-				for k, v := range ob {
-					if k != "title" && k != "date" {
-						out[k] = v
-					}
-				}
-			} else {
-				out[f.Key] = f.Value
-				if vt, ok := f.Value.(time.Time); ok {
-					out[f.Key] = vt.Format(time.RFC3339)
-				}
-			}
-		}
+	for k, v := range e.Fields.Map() {
+		out[k] = v
 	}
 	return json.Marshal(out)
 }
@@ -259,16 +236,16 @@ func (e *Entry) UnmarshalJSON(in []byte) error {
 		return newParsingError(err)
 	}
 	title, ok := out["title"].(string)
-	if (!ok || title == "") && !e.skipMissing {
+	if !ok || title == "" {
 		return ErrorMissingTitle
 	}
 	e.Title = title
 	dates, ok := out["date"].(string)
-	if (!ok || dates == "") && !e.skipMissing {
+	if !ok || dates == "" {
 		return ErrorMissingDate
 	}
 	date, err := tools.ParseDate(dates)
-	if err != nil && !e.skipMissing {
+	if err != nil {
 		return newParsingError(err)
 	}
 	e.Date = date
diff --git a/models/entry_test.go b/models/entry_test.go
index aefecc9..01c65a7 100644
--- a/models/entry_test.go
+++ b/models/entry_test.go
@@ -9,7 +9,6 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 )
 
 // Type assertions
@@ -18,19 +17,6 @@ var _ encoding.TextUnmarshaler = new(Entry)
 var _ json.Marshaler = Entry{}
 var _ json.Unmarshaler = new(Entry)
 
-func TestPartialEntry(t *testing.T) {
-	e := PartialEntry()
-	assert.True(t, e.skipMissing)
-	err := json.Unmarshal([]byte(`{"a":42}`), &e)
-	assert.NoError(t, err)
-	assert.Equal(t, "", e.Title)
-	assert.Equal(t, time.Time{}, e.Date)
-	require.Len(t, e.Fields, 1)
-	f := e.Fields[0]
-	assert.Equal(t, "a", f.Key)
-	assert.Equal(t, int64(42), f.Value)
-}
-
 func TestEntryMarshal(t *testing.T) {
 	when := time.Now()
 	whens := when.Format(DateFormat)
@@ -84,7 +70,7 @@ func TestEntryMarshal(t *testing.T) {
 
 func getEntryMarshalTestRunner(title string, date time.Time, fields []Meta, first string, lines []string, err error) func(*testing.T) {
 	return func(t *testing.T) {
-		en := Entry{title, date, fields, false}
+		en := Entry{title, date, fields}
 		o, er := en.MarshalText()
 		assert.Equal(t, err, er)
 		if first == "" {
@@ -232,7 +218,7 @@ func TestEntryJsonMarshal(t *testing.T) {
 
 func getEntryJsonMarshalTestRunner(title string, date time.Time, fields []Meta, out string, err error) func(t *testing.T) {
 	return func(t *testing.T) {
-		e := Entry{title, date, fields, false}
+		e := Entry{title, date, fields}
 		o, er := json.Marshal(e)
 		if err == nil {
 			assert.JSONEq(t, out, string(o))
diff --git a/models/meta_test.go b/models/meta_test.go
index 1e0888b..2d4cea8 100644
--- a/models/meta_test.go
+++ b/models/meta_test.go
@@ -13,6 +13,8 @@ import (
 // Type assertions
 var _ encoding.TextMarshaler = Meta{}
 var _ encoding.TextUnmarshaler = new(Meta)
+var _ json.Marshaler = Metas{}
+var _ json.Unmarshaler = new(Metas)
 
 var skipMarshalTest = errors.New("skip marshal")
 
@@ -97,3 +99,45 @@ func getMetaTestRunner(key string, value any, out string, err error, newVal any)
 		}
 	}
 }
+
+func TestMetasJson(t *testing.T) {
+	ms := Metas{{"me", 41}, {"you", false}}
+	exp := `{"me":41,"you":false}`
+	o, err := json.Marshal(ms)
+	assert.NoError(t, err)
+	assert.JSONEq(t, exp, string(o))
+}
+
+func TestMetasJsonUnmarshal(t *testing.T) {
+	ms := Metas{}
+	in := `{"me":"cool","you":false}`
+	err := json.Unmarshal([]byte(in), &ms)
+	assert.NoError(t, err)
+	assert.Len(t, ms, 2)
+	assert.ElementsMatch(t, Metas{
+		{"me", "cool"},
+		{"you", false},
+	}, ms)
+}
+
+func TestMetasJsonError(t *testing.T) {
+	ms := Metas{}
+	in := "not json"
+	err := (&ms).UnmarshalJSON([]byte(in))
+	assert.Error(t, err)
+	assert.Len(t, ms, 0)
+}
+
+func TestMetasAppend(t *testing.T) {
+	ms := Metas{}
+	ms = ms.Append("foo", 42)
+	assert.Len(t, ms, 1)
+	assert.Equal(t, Meta{"foo", 42}, ms[0])
+}
+
+func TestMetasAppendTo(t *testing.T) {
+	ms := &Metas{}
+	ms.AppendTo("foo", 42)
+	assert.Len(t, *ms, 1)
+	assert.Equal(t, Meta{"foo", 42}, (*ms)[0])
+}
diff --git a/models/metas.go b/models/metas.go
new file mode 100644
index 0000000..4db9d46
--- /dev/null
+++ b/models/metas.go
@@ -0,0 +1,71 @@
+package models
+
+import (
+	"encoding/json"
+	"time"
+)
+
+// A slice of Meta
+type Metas []Meta
+
+// Returns a single map containing all the Meta. Is useful when encoding to JSON
+func (ms Metas) Map() map[string]any {
+	out := map[string]any{}
+	for _, f := range ms {
+		if _, found := out[f.Key]; found || f.Key == "title" || f.Key == "date" {
+			continue
+		}
+		if f.Key == "json" {
+			ob := map[string]any{}
+			if j, ok := f.Value.(json.RawMessage); ok {
+				json.Unmarshal(j, &ob)
+			}
+			// If we couldn't get valid data from there, this will just be empty
+			for k, v := range ob {
+				if k != "title" && k != "date" {
+					out[k] = v
+				}
+			}
+		} else {
+			out[f.Key] = f.Value
+			if vt, ok := f.Value.(time.Time); ok {
+				out[f.Key] = vt.Format(time.RFC3339)
+			}
+		}
+	}
+	return out
+}
+
+// Implements json.Marshaler
+func (ms Metas) MarshalJSON() ([]byte, error) {
+	return json.Marshal(ms.Map())
+}
+
+// Implements json.Unmarshaler
+func (ms *Metas) UnmarshalJSON(in []byte) error {
+	old := (*ms).Map()
+	out := map[string]any{}
+	err := json.Unmarshal(in, &out)
+	if err != nil {
+		return err
+	}
+	ret := *ms
+	for k, v := range out {
+		if _, found := old[k]; k != "title" && k != "date" && !found {
+			ret = append(ret, Meta{k, v})
+		}
+	}
+	*ms = ret
+	return nil
+}
+
+// Returns a new Metas with a new Meta appended
+func (ms Metas) Append(k string, v any) Metas {
+	return append(ms, Meta{k, v})
+}
+
+// Appends a new Meta to this Metas
+func (ms *Metas) AppendTo(k string, v any) {
+	n := (*ms).Append(k, v)
+	*ms = n
+}
diff --git a/tools/parse_date_test.go b/tools/parse_date_test.go
index cfaadd1..7aa30b2 100644
--- a/tools/parse_date_test.go
+++ b/tools/parse_date_test.go
@@ -16,8 +16,8 @@ func TestParseDate(t *testing.T) {
 	y, mon, d, h, loc := now.Year(), now.Month(), now.Day(), now.Hour(), now.Location()
 	sec := now.Truncate(time.Second)
 	today := time.Date(y, mon, d, 0, 0, 0, 0, loc)
-	tomorrow := today.Add(day)
-	yesterday := today.Add(-day)
+	tomorrow := time.Date(y, mon, d+1, 0, 0, 0, 0, loc)
+	yesterday := time.Date(y, mon, d-1, 0, 0, 0, 0, loc)
 	twoMin := now.Add(2 * time.Minute).Truncate(time.Minute)
 	twoHour := time.Date(y, mon, d, h+2, 0, 0, 0, loc)
 	firstMonth := time.Date(y, mon, 1, 0, 0, 0, 0, loc)
diff --git a/tools/write_buffer.go b/tools/write_buffer.go
index e67d219..8ae9386 100644
--- a/tools/write_buffer.go
+++ b/tools/write_buffer.go
@@ -14,6 +14,18 @@ func WriteValue(buff *bytes.Buffer, val any) (n int, err error) {
 		err = fmt.Errorf("Unsupported type %T", v)
 	case nil:
 		return
+	case []any:
+		var o []byte
+		o, err = json.Marshal(v)
+		if err == nil {
+			return buff.Write(o)
+		}
+	case map[string]any:
+		var o []byte
+		o, err = json.Marshal(v)
+		if err == nil {
+			return buff.Write(o)
+		}
 	case string:
 		return buff.WriteString(v)
 	case int:
diff --git a/tools/write_buffer_test.go b/tools/write_buffer_test.go
index 1a4a103..aa7e203 100644
--- a/tools/write_buffer_test.go
+++ b/tools/write_buffer_test.go
@@ -30,6 +30,8 @@ func TestWriteBuffer(t *testing.T) {
 		{"json.Number", json.Number("42.13"), "42.13", nil},
 		{"json.RawMessage", json.RawMessage("{}"), "{}", nil},
 		{"time", when, when.Format(time.RFC3339), nil},
+		{"slice", []any{1, 2, "foo"}, `[1,2,"foo"]`, nil},
+		{"map", map[string]any{"baz": 42, "foo": "bar"}, `{"baz":42,"foo":"bar"}`, nil},
 		{"struct", struct{}{}, "", errors.New("Unsupported type struct {}")},
 	}