diff --git a/application.go b/application.go
index e15acd69..a8d8037f 100644
--- a/application.go
+++ b/application.go
@@ -15,7 +15,7 @@ import (
 
 const (
 	// Version for debugging
-	Version = "1.1.0"
+	Version = "1.2.0"
 	// https://play.golang.org/p/r6GNeV1gbH
 	banner = "" +
 		" \x1b[1;32m _____ _ _\n" +
diff --git a/docs/index.html b/docs/index.html
index 87e43af2..25dd34a8 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -19,7 +19,7 @@
 
   <script>
     window.$docsify = {
-      name: 'Fiber v1.1.0',
+      name: 'Fiber v1.2.0',
       repo: 'gofiber/fiber',
       loadSidebar: "sidebar.md",
       homepage: 'getting_started.md',
diff --git a/go.mod b/go.mod
index 6320a0ee..c48b7838 100644
--- a/go.mod
+++ b/go.mod
@@ -4,5 +4,7 @@ go 1.13
 
 require (
 	github.com/json-iterator/go v1.1.9
+	github.com/tidwall/gjson v1.4.0 // indirect
+	github.com/tidwall/sjson v1.0.4
 	github.com/valyala/fasthttp v1.8.0
 )
diff --git a/go.sum b/go.sum
index e35a7d19..f987141c 100644
--- a/go.sum
+++ b/go.sum
@@ -14,6 +14,14 @@ github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lN
 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/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/tidwall/gjson v1.4.0 h1:w6iOJZt9BJOzz4VD9CSnRCX/oleCsAZWi+1FFzZA+SA=
+github.com/tidwall/gjson v1.4.0/go.mod h1:P256ACg0Mn+j1RXIDXoss50DeIABTYK1PULOJHhxOls=
+github.com/tidwall/match v1.0.1 h1:PnKP62LPNxHKTwvHHZZzdOAOCtsJTjo6dZLCwpKm5xc=
+github.com/tidwall/match v1.0.1/go.mod h1:LujAq0jyVjBy028G1WhWfIzbpQfMO8bBZ6Tyb0+pL9E=
+github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
+github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
+github.com/tidwall/sjson v1.0.4 h1:UcdIRXff12Lpnu3OLtZvnc03g4vH2suXDXhBwBqmzYg=
+github.com/tidwall/sjson v1.0.4/go.mod h1:bURseu1nuBkFpIES5cz6zBtjmYeOQmEESshn7VpF15Y=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasthttp v1.8.0 h1:actnGGBYtGQmxVaZxyZpp57Vcc2NhcO7mMN0IMwCC0w=
diff --git a/request.go b/request.go
index 6cf6c765..fb3a43b9 100644
--- a/request.go
+++ b/request.go
@@ -143,7 +143,7 @@ func (ctx *Ctx) BasicAuth() (user, pass string, ok bool) {
 	if err != nil {
 		return
 	}
-	cs := b2s(c)
+	cs := B2S(c)
 	s := strings.IndexByte(cs, ':')
 	if s < 0 {
 		return
@@ -158,18 +158,18 @@ func (ctx *Ctx) BasicAuth() (user, pass string, ok bool) {
 //   -d john=doe
 func (ctx *Ctx) Body(args ...interface{}) string {
 	if len(args) == 0 {
-		return b2s(ctx.Fasthttp.Request.Body())
+		return B2S(ctx.Fasthttp.Request.Body())
 	}
 	if len(args) == 1 {
 		switch arg := args[0].(type) {
 		case string:
-			return b2s(ctx.Fasthttp.Request.PostArgs().Peek(arg))
+			return B2S(ctx.Fasthttp.Request.PostArgs().Peek(arg))
 		case func(string, string):
 			ctx.Fasthttp.Request.PostArgs().VisitAll(func(k []byte, v []byte) {
-				arg(b2s(k), b2s(v))
+				arg(B2S(k), B2S(v))
 			})
 		default:
-			return b2s(ctx.Fasthttp.Request.Body())
+			return B2S(ctx.Fasthttp.Request.Body())
 		}
 	}
 	return ""
@@ -178,15 +178,15 @@ func (ctx *Ctx) Body(args ...interface{}) string {
 // Cookies : https://gofiber.github.io/fiber/#/context?id=cookies
 func (ctx *Ctx) Cookies(args ...interface{}) string {
 	if len(args) == 0 {
-		//return b2s(ctx.Fasthttp.Response.Header.Peek("Cookie"))
+		//return B2S(ctx.Fasthttp.Response.Header.Peek("Cookie"))
 		return ctx.Get("Cookie")
 	}
 	switch arg := args[0].(type) {
 	case string:
-		return b2s(ctx.Fasthttp.Request.Header.Cookie(arg))
+		return B2S(ctx.Fasthttp.Request.Header.Cookie(arg))
 	case func(string, string):
 		ctx.Fasthttp.Request.Header.VisitAllCookie(func(k, v []byte) {
-			arg(b2s(k), b2s(v))
+			arg(B2S(k), B2S(v))
 		})
 	default:
 		panic("Argument must be a string or func(string, string)")
@@ -201,7 +201,7 @@ func (ctx *Ctx) FormFile(key string) (*multipart.FileHeader, error) {
 
 // FormValue : https://gofiber.github.io/fiber/#/context?id=formvalue
 func (ctx *Ctx) FormValue(key string) string {
-	return b2s(ctx.Fasthttp.FormValue(key))
+	return B2S(ctx.Fasthttp.FormValue(key))
 }
 
 // Fresh : https://gofiber.github.io/fiber/#/context?id=fresh
@@ -215,12 +215,12 @@ func (ctx *Ctx) Get(key string) string {
 	if key == "referrer" {
 		key = "referer"
 	}
-	return b2s(ctx.Fasthttp.Request.Header.Peek(key))
+	return B2S(ctx.Fasthttp.Request.Header.Peek(key))
 }
 
 // Hostname : https://gofiber.github.io/fiber/#/context?id=hostname
 func (ctx *Ctx) Hostname() string {
-	return b2s(ctx.Fasthttp.URI().Host())
+	return B2S(ctx.Fasthttp.URI().Host())
 }
 
 // Ip : https://gofiber.github.io/fiber/#/context?id=Ip
@@ -265,7 +265,7 @@ func (ctx *Ctx) Locals(key string, val ...interface{}) interface{} {
 
 // Method : https://gofiber.github.io/fiber/#/context?id=method
 func (ctx *Ctx) Method() string {
-	return b2s(ctx.Fasthttp.Request.Header.Method())
+	return B2S(ctx.Fasthttp.Request.Header.Method())
 }
 
 // MultipartForm : https://gofiber.github.io/fiber/#/context?id=multipartform
@@ -275,7 +275,7 @@ func (ctx *Ctx) MultipartForm() (*multipart.Form, error) {
 
 // OriginalUrl : https://gofiber.github.io/fiber/#/context?id=originalurl
 func (ctx *Ctx) OriginalUrl() string {
-	return b2s(ctx.Fasthttp.Request.Header.RequestURI())
+	return B2S(ctx.Fasthttp.Request.Header.RequestURI())
 }
 
 // Params : https://gofiber.github.io/fiber/#/context?id=params
@@ -293,7 +293,7 @@ func (ctx *Ctx) Params(key string) string {
 
 // Path : https://gofiber.github.io/fiber/#/context?id=path
 func (ctx *Ctx) Path() string {
-	return b2s(ctx.Fasthttp.URI().Path())
+	return B2S(ctx.Fasthttp.URI().Path())
 }
 
 // Protocol : https://gofiber.github.io/fiber/#/context?id=protocol
@@ -306,7 +306,7 @@ func (ctx *Ctx) Protocol() string {
 
 // Query : https://gofiber.github.io/fiber/#/context?id=query
 func (ctx *Ctx) Query(key string) string {
-	return b2s(ctx.Fasthttp.QueryArgs().Peek(key))
+	return B2S(ctx.Fasthttp.QueryArgs().Peek(key))
 }
 
 // Range : https://gofiber.github.io/fiber/#/context?id=range
diff --git a/response.go b/response.go
index dfe26ad9..2ba9e303 100644
--- a/response.go
+++ b/response.go
@@ -15,6 +15,7 @@ import (
 	"time"
 
 	jsoniter "github.com/json-iterator/go"
+	"github.com/tidwall/sjson"
 	"github.com/valyala/fasthttp"
 )
 
@@ -49,7 +50,7 @@ func (ctx *Ctx) ClearCookie(name ...string) {
 		return
 	}
 	ctx.Fasthttp.Request.Header.VisitAllCookie(func(k, v []byte) {
-		ctx.Fasthttp.Response.Header.DelClientCookie(b2s(k))
+		ctx.Fasthttp.Response.Header.DelClientCookie(B2S(k))
 	})
 }
 
@@ -124,7 +125,7 @@ func (ctx *Ctx) Format(args ...interface{}) {
 	case string:
 		body = b
 	case []byte:
-		body = b2s(b)
+		body = B2S(b)
 	default:
 		panic("Body must be a string or []byte")
 	}
@@ -151,7 +152,7 @@ func (ctx *Ctx) Json(v interface{}) error {
 	if err != nil {
 		return err
 	}
-	ctx.Set("Content-Type", "application/json")
+	ctx.Fasthttp.Response.Header.SetContentTypeBytes(applicationjson)
 	ctx.Fasthttp.Response.SetBodyString(raw)
 	return nil
 }
@@ -165,7 +166,7 @@ func (ctx *Ctx) Jsonp(v interface{}, cb ...string) error {
 
 	var builder strings.Builder
 	if len(cb) > 0 {
-		builder.Write(s2b(cb[0]))
+		builder.Write(S2B(cb[0]))
 	} else {
 		builder.Write([]byte("callback"))
 	}
@@ -231,11 +232,11 @@ func (ctx *Ctx) Send(args ...interface{}) {
 	}
 	switch body := args[0].(type) {
 	case string:
-		//ctx.Fasthttp.Response.SetBodyRaw(s2b(body))
+		//ctx.Fasthttp.Response.SetBodyRaw(S2B(body))
 		ctx.Fasthttp.Response.SetBodyString(body)
 	case []byte:
 		//ctx.Fasthttp.Response.SetBodyRaw(body)
-		ctx.Fasthttp.Response.SetBodyString(b2s(body))
+		ctx.Fasthttp.Response.SetBodyString(B2S(body))
 	default:
 		panic("body must be a string or []byte")
 	}
@@ -243,7 +244,7 @@ func (ctx *Ctx) Send(args ...interface{}) {
 
 // SendBytes : https://gofiber.github.io/fiber/#/context?id=sendbytes
 func (ctx *Ctx) SendBytes(body []byte) {
-	ctx.Fasthttp.Response.SetBodyString(b2s(body))
+	ctx.Fasthttp.Response.SetBodyString(B2S(body))
 }
 
 // SendFile : https://gofiber.github.io/fiber/#/context?id=sendfile
@@ -277,7 +278,33 @@ func (ctx *Ctx) SendString(body string) {
 
 // Set : https://gofiber.github.io/fiber/#/context?id=set
 func (ctx *Ctx) Set(key string, val string) {
-	ctx.Fasthttp.Response.Header.SetCanonical(s2b(key), s2b(val))
+	ctx.Fasthttp.Response.Header.SetCanonical(S2B(key), S2B(val))
+}
+
+// Sjson : https://github.com/tidwall/sjson
+func (ctx *Ctx) Sjson(json, path string, value interface{}) error {
+	raw, err := sjson.SetBytesOptions(S2B(json), path, value, &sjson.Options{
+		Optimistic: true,
+	})
+	if err != nil {
+		return err
+	}
+	ctx.Fasthttp.Response.Header.SetContentTypeBytes(applicationjson)
+	ctx.Fasthttp.Response.SetBodyString(B2S(raw))
+	return nil
+}
+
+// SjsonString : https://github.com/tidwall/sjson
+func (ctx *Ctx) SjsonStr(json, path, value string) error {
+	raw, err := sjson.SetBytesOptions(S2B(json), path, S2B(value), &sjson.Options{
+		Optimistic: true,
+	})
+	if err != nil {
+		return err
+	}
+	ctx.Fasthttp.Response.Header.SetContentTypeBytes(applicationjson)
+	ctx.Fasthttp.Response.SetBodyString(B2S(raw))
+	return nil
 }
 
 // Status : https://gofiber.github.io/fiber/#/context?id=status
@@ -318,7 +345,7 @@ func (ctx *Ctx) Write(args ...interface{}) {
 	case string:
 		ctx.Fasthttp.Response.SetBodyString(body)
 	case []byte:
-		ctx.Fasthttp.Response.AppendBodyString(b2s(body))
+		ctx.Fasthttp.Response.AppendBodyString(B2S(body))
 	default:
 		panic("body must be a string or []byte")
 	}
diff --git a/utils.go b/utils.go
index 2c02b3ea..08e999c7 100644
--- a/utils.go
+++ b/utils.go
@@ -10,12 +10,15 @@ package fiber
 import (
 	"os"
 	"path/filepath"
-	"reflect"
 	"regexp"
 	"strings"
 	"unsafe"
 )
 
+var (
+	applicationjson = []byte("application/json")
+)
+
 var replacer = strings.NewReplacer(":", "", "?", "")
 
 func getParams(path string) (params []string) {
@@ -73,33 +76,11 @@ func walkDir(root string) (files []string, isDir bool, err error) {
 	return files, isDir, err
 }
 
-// b2s converts byte slice to a string without memory allocation.
-// See https://groups.google.com/forum/#!msg/Golang-Nuts/ENgbUzYvCuU/90yGx7GUAgAJ .
-//
-// Note it may break if string and/or slice header will change
-// in the future go versions.
-func b2s(b []byte) string {
-	sh := (*reflect.StringHeader)(unsafe.Pointer(&b))
-	bh := reflect.SliceHeader{
-		Data: sh.Data,
-		Len:  sh.Len,
-		Cap:  sh.Len,
-	}
-	return *(*string)(unsafe.Pointer(&bh))
+func B2S(b []byte) string {
+	return *(*string)(unsafe.Pointer(&b))
 }
-
-// s2b converts string to a byte slice without memory allocation.
-//
-// Note it may break if string and/or slice header will change
-// in the future go versions.
-func s2b(s string) []byte {
-	sh := (*reflect.StringHeader)(unsafe.Pointer(&s))
-	bh := reflect.SliceHeader{
-		Data: sh.Data,
-		Len:  sh.Len,
-		Cap:  sh.Len,
-	}
-	return *(*[]byte)(unsafe.Pointer(&bh))
+func S2B(s string) []byte {
+	return *(*[]byte)(unsafe.Pointer(&s))
 }
 
 // NoCopy embed this type into a struct, which mustn't be copied,