diff --git a/extension.go b/extension.go
index 4f7c4a8..bb44051 100644
--- a/extension.go
+++ b/extension.go
@@ -1,7 +1,15 @@
 // Code generated by gitoa.ru/go-4devs/mime and sourse ../mime.yaml
 package mime
 
-import "fmt"
+import (
+	"encoding"
+	"fmt"
+)
+
+var (
+	_ encoding.TextUnmarshaler = (*Mime)(nil)
+	_ encoding.TextMarshaler   = (*Mime)(nil)
+)
 
 type Ext int
 
@@ -17,8 +25,21 @@ func (v Ext) Is(types ...Ext) bool {
 	return false
 }
 
+func (v Ext) MarshalText() ([]byte, error) {
+	return []byte(v.String()), nil
+}
+
+func (s *Ext) UnmarshalText(text []byte) error {
+	ext := ExtFromString(string(text))
+	*s = ext
+
+	return nil
+}
+
 func (v Ext) String() string {
 	switch v {
+	case ExtUnrecognized:
+		return "unrecognized"
 	case ExtPdf:
 		return "pdf"
 	case ExtEz:
@@ -6940,6 +6961,7 @@ func (v Ext) MimeTypes() MimeTypes {
 }
 
 const (
+	ExtUnrecognized                Ext = 0
 	ExtPdf                         Ext = 1
 	ExtEz                          Ext = 2
 	ExtAnx                         Ext = 3
@@ -12127,5 +12149,5 @@ func ExtFromString(name string) Ext {
 		return ExtIce
 	}
 
-	return 0
+	return ExtUnrecognized
 }
diff --git a/extension_test.go b/extension_test.go
new file mode 100644
index 0000000..524f3ed
--- /dev/null
+++ b/extension_test.go
@@ -0,0 +1,41 @@
+package mime_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"gitoa.ru/go-4devs/mime"
+)
+
+func TestExtUnmarshalText(t *testing.T) {
+	t.Parallel()
+
+	cases := []struct {
+		data   string
+		expext mime.Ext
+	}{
+		{
+			data:   "txt",
+			expext: mime.ExtTxt,
+		},
+		{
+			data:   "TXT",
+			expext: mime.ExtUnrecognized,
+		},
+		{
+			data:   "C",
+			expext: mime.Ext_C,
+		},
+		{
+			data:   "c",
+			expext: mime.ExtC,
+		},
+	}
+
+	for _, cs := range cases {
+		var in mime.Ext
+		err := in.UnmarshalText([]byte(cs.data))
+		require.Equal(t, cs.expext, in)
+		require.NoError(t, err)
+	}
+}
diff --git a/go.mod b/go.mod
index c2d7c87..3ca1746 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,11 @@
 module gitoa.ru/go-4devs/mime
 
 go 1.19
+
+require github.com/stretchr/testify v1.8.0
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
diff --git a/go.sum b/go.sum
index e69de29..5164829 100644
--- a/go.sum
+++ b/go.sum
@@ -0,0 +1,15 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/mime.go b/mime.go
index 811cade..0aeb3f1 100644
--- a/mime.go
+++ b/mime.go
@@ -1,7 +1,16 @@
 // Code generated by gitoa.ru/go-4devs/mime and sourse ../mime.yaml
 package mime
 
-import "fmt"
+import (
+	"encoding"
+	"fmt"
+	"strings"
+)
+
+var (
+	_ encoding.TextUnmarshaler = (*Mime)(nil)
+	_ encoding.TextMarshaler   = (*Mime)(nil)
+)
 
 type Mime int
 
@@ -17,8 +26,21 @@ func (v Mime) Is(types ...Mime) bool {
 	return false
 }
 
+func (v Mime) MarshalText() ([]byte, error) {
+	return []byte(v.String()), nil
+}
+
+func (s *Mime) UnmarshalText(text []byte) error {
+	mime := MimeFromString(strings.ToLower(string(text)))
+	*s = mime
+
+	return nil
+}
+
 func (v Mime) String() string {
 	switch v {
+	case Unrecognized:
+		return "unrecognized"
 	case ApplicationAcrobat:
 		return "application/acrobat"
 	case ApplicationAndrewDashInset:
@@ -6688,6 +6710,7 @@ func (v Mime) ExtTypes() ExtTypes {
 }
 
 const (
+	Unrecognized                                                                      Mime = 0
 	ApplicationAcrobat                                                                Mime = 1
 	ApplicationAndrewDashInset                                                        Mime = 2
 	ApplicationAnnodex                                                                Mime = 3
@@ -11686,5 +11709,5 @@ func MimeFromString(name string) Mime {
 		return ZzDashApplicationZzDashWinassocDashXls
 	}
 
-	return 0
+	return Unrecognized
 }
diff --git a/mime_example_test.go b/mime_example_test.go
index b6d2b21..748e793 100644
--- a/mime_example_test.go
+++ b/mime_example_test.go
@@ -1,6 +1,7 @@
 package mime_test
 
 import (
+	"encoding/json"
 	"fmt"
 
 	"gitoa.ru/go-4devs/mime"
@@ -34,3 +35,38 @@ func ExampleMime_ExtTypes() {
 	// [html htm shtml]
 	// [js mjs jsm]
 }
+
+func ExampleMime_jsonUnmarshal() {
+	type Expect struct {
+		Data string    `json:"data"`
+		Mime mime.Mime `json:"mime"`
+	}
+
+	var res Expect
+
+	_ = json.Unmarshal([]byte(`{"data":"text","mime":"text/html"}`), &res)
+
+	fmt.Printf("%[1]v: %[1]T(%#[1]v)", res.Mime)
+
+	// Output:
+	// text/html: mime.Mime(1406)
+}
+
+func ExampleMime_jsonMarshal() {
+	type Expect struct {
+		Data string    `json:"data"`
+		Mime mime.Mime `json:"mime"`
+	}
+
+	res := Expect{
+		Data: "some text",
+		Mime: mime.TextMarkdown,
+	}
+
+	result, _ := json.Marshal(res)
+
+	fmt.Printf("%s", result)
+
+	// Output:
+	// {"data":"some text","mime":"text/markdown"}
+}
diff --git a/mime_test.go b/mime_test.go
new file mode 100644
index 0000000..1874d9f
--- /dev/null
+++ b/mime_test.go
@@ -0,0 +1,45 @@
+package mime_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"gitoa.ru/go-4devs/mime"
+)
+
+func TestMimeMarshalText(t *testing.T) {
+	t.Parallel()
+
+	res, err := mime.ApplicationJavascript.MarshalText()
+	require.Equal(t, "application/javascript", string(res))
+	require.NoError(t, err)
+}
+
+func TestMimeUnmarshalText(t *testing.T) {
+	t.Parallel()
+
+	cases := []struct {
+		data   string
+		expext mime.Mime
+	}{
+		{
+			data:   "text/html",
+			expext: mime.TextHTML,
+		},
+		{
+			data:   "text/HTML",
+			expext: mime.TextHTML,
+		},
+		{
+			data:   "any text",
+			expext: mime.Unrecognized,
+		},
+	}
+
+	for _, cs := range cases {
+		var in mime.Mime
+		err := in.UnmarshalText([]byte(cs.data))
+		require.Equal(t, cs.expext, in)
+		require.NoError(t, err)
+	}
+}
diff --git a/scripts/mime/tpl/extension.text.tmpl b/scripts/mime/tpl/extension.text.tmpl
index 1c2ad84..698c45f 100644
--- a/scripts/mime/tpl/extension.text.tmpl
+++ b/scripts/mime/tpl/extension.text.tmpl
@@ -1,7 +1,15 @@
 // Code generated by gitoa.ru/go-4devs/mime and sourse {{.Source}}
 package {{.ExtPackage}}
 
-import "fmt"
+import (
+	"encoding"
+	"fmt"
+)
+
+var (
+	_ encoding.TextUnmarshaler = (*Mime)(nil)
+	_ encoding.TextMarshaler   = (*Mime)(nil)
+)
 
 type Ext int
 
@@ -17,8 +25,21 @@ func (v Ext) Is(types ...Ext) bool {
 	return false
 }
 
+func (v Ext) MarshalText() ([]byte, error) {
+	return []byte(v.String()), nil
+}
+
+func (s *Ext) UnmarshalText(text []byte) error {
+	ext := ExtFromString(string(text))
+	*s = ext
+
+	return nil
+}
+
 func (v Ext) String() string {
 	switch v {
+	case {{ name .ExtPrefix "unrecognized" }}:
+		return "unrecognized"
 {{- range $value := .Extensions }}    
 	case {{ name $.ExtPrefix $value.Name }}:
 		return "{{- $value.Name -}}"
@@ -40,6 +61,7 @@ func (v Ext) MimeTypes() MimeTypes{
 }
 
 const (
+	{{ name .ExtPrefix "unrecognized" }} Ext = 0
 {{- range $value := .Extensions }}
     {{ name $.ExtPrefix $value.Name }} Ext = {{ $value.ID }}
 {{- end}}
@@ -53,6 +75,6 @@ func ExtFromString(name string) Ext {
 {{- end}}
 	}
 
-	return 0
+	return {{ name .ExtPrefix "unrecognized" }}
 }
 
diff --git a/scripts/mime/tpl/mime.text.tmpl b/scripts/mime/tpl/mime.text.tmpl
index 3e7010d..ced1db6 100644
--- a/scripts/mime/tpl/mime.text.tmpl
+++ b/scripts/mime/tpl/mime.text.tmpl
@@ -1,7 +1,16 @@
 // Code generated by gitoa.ru/go-4devs/mime and sourse {{.Source}}
 package {{.MimePackage}}
 
-import "fmt"
+import (
+	"encoding"
+	"fmt"
+	"strings"
+)
+
+var (
+	_ encoding.TextUnmarshaler = (*Mime)(nil)
+	_ encoding.TextMarshaler   = (*Mime)(nil)
+)
 
 type Mime int
 
@@ -17,8 +26,21 @@ func (v Mime) Is(types ...Mime) bool {
 	return false
 }
 
+func (v Mime) MarshalText() ([]byte, error) {
+	return []byte(v.String()), nil
+}
+
+func (s *Mime) UnmarshalText(text []byte) error {
+	mime := MimeFromString(strings.ToLower(string(text)))
+	*s = mime
+
+	return nil
+}
+
 func (v Mime) String() string {
 	switch v {
+	case {{ name .MimePrefix "unrecognized" }}:
+		return "unrecognized"
 {{- range $value := .Mimes }}    
 	case {{ name $.MimePrefix $value.Name }}:
 		return "{{- $value.Name -}}"
@@ -40,6 +62,7 @@ func (v Mime) ExtTypes() ExtTypes{
 }
 
 const (
+	{{ name .MimePrefix "unrecognized" }} Mime = 0
 {{- range $value := .Mimes }}
     {{ name $.MimePrefix $value.Name }} Mime = {{ $value.ID }}
 {{- end}}
@@ -53,5 +76,5 @@ func MimeFromString(name string) Mime {
 {{- end}}
 	}
 
-	return 0
+	return {{ name .MimePrefix "unrecognized" }}
 }