diff --git a/checker/default/any/main.go b/checker/default/any/main.go
new file mode 100644
index 0000000..294207a
--- /dev/null
+++ b/checker/default/any/main.go
@@ -0,0 +1,9 @@
+package main
+
+func Match(name string) bool {
+	return name == "any"
+}
+
+func Check(value interface{}) bool {
+	return true
+}
diff --git a/internal/multipart/private.go b/internal/multipart/private.go
new file mode 100644
index 0000000..68e8fb6
--- /dev/null
+++ b/internal/multipart/private.go
@@ -0,0 +1,84 @@
+package multipart
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Read all until the next boundary is found
+func (i *MultipartReader) readComponent() ([]string, error) {
+
+	component := make([]string, 0)
+
+	for { // Read until boundary or error
+
+		line, _, err := i.reader.ReadLine()
+
+		/* (1) Stop on error */
+		if err != nil {
+			return component, err
+		}
+
+		/* (2) Stop at boundary */
+		if strings.HasPrefix(string(line), i.boundary) {
+			return component, err
+		}
+
+		/* (3) Ignore empty lines */
+		if len(line) > 0 {
+			component = append(component, string(line))
+		}
+
+	}
+
+}
+
+// Parses a single component from its raw lines
+func (i *MultipartReader) parseComponent(line []string) error {
+
+	// next line index to use
+	cursor := 1
+
+	/* (1) Fail if invalid line count */
+	if len(line) < 2 {
+		return fmt.Errorf("Missing data to parse component")
+	}
+
+	/* (2) Split meta data */
+	meta := strings.Split(line[0], "; ")
+
+	if len(meta) < 2 {
+		return fmt.Errorf("Missing component meta data")
+	}
+
+	/* (3) Extract name */
+	if !strings.HasPrefix(meta[1], `name="`) {
+		return fmt.Errorf("Cannot extract component name")
+	}
+	name := meta[1][len(`name="`) : len(meta[1])-1]
+
+	/* (4) Check if it is a file */
+	isFile := len(meta) > 2 && strings.HasPrefix(meta[2], `filename="`)
+
+	// skip next line (Content-Type) if file
+	if isFile {
+		cursor++
+	}
+
+	/* (5) Create index if name not already used */
+	already, isset := i.Components[name]
+	if !isset {
+
+		i.Components[name] = &MultipartComponent{
+			File: isFile,
+			Data: make([]string, 0),
+		}
+		already = i.Components[name]
+
+	}
+
+	/* (6) Store new value */
+	already.Data = append(already.Data, strings.Join(line[cursor:], "\n"))
+
+	return nil
+}
diff --git a/internal/multipart/public.go b/internal/multipart/public.go
new file mode 100644
index 0000000..94b89b0
--- /dev/null
+++ b/internal/multipart/public.go
@@ -0,0 +1,67 @@
+package multipart
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+)
+
+// Creates a new multipart reader from an http.Request
+func CreateReader(req *http.Request) *MultipartReader {
+
+	/* (1) extract boundary */
+	boundary := req.Header.Get("Content-Type")[len("multipart/form-data; boundary="):]
+	boundary = fmt.Sprintf("--%s", boundary)
+
+	/* (2) init reader */
+	i := &MultipartReader{
+		reader:     bufio.NewReader(req.Body),
+		boundary:   boundary,
+		Components: make(map[string]*MultipartComponent),
+	}
+
+	/* (3) Place reader cursor after first boundary */
+	var (
+		err  error
+		line []byte
+	)
+
+	for err == nil && string(line) != boundary {
+		line, _, err = i.reader.ReadLine()
+	}
+
+	return i
+
+}
+
+// Parses the multipart components from the request
+func (i *MultipartReader) Parse() error {
+
+	/* (1) For each component (until boundary) */
+	for {
+
+		// 1. Read component
+		component, err := i.readComponent()
+
+		// 2. Stop at EOF
+		if err == io.EOF {
+			return nil
+		}
+
+		// 3. Dispatch error
+		if err != nil {
+			return err
+		}
+
+		// 4. parse component
+		err = i.parseComponent(component)
+
+		if err != nil {
+			log.Printf("%s\n", err)
+		}
+
+	}
+
+}
diff --git a/internal/multipart/types.go b/internal/multipart/types.go
new file mode 100644
index 0000000..6ac4775
--- /dev/null
+++ b/internal/multipart/types.go
@@ -0,0 +1,26 @@
+package multipart
+
+import (
+	"bufio"
+)
+
+type MultipartReader struct {
+	// reader used for http.Request.Body reading
+	reader *bufio.Reader
+
+	// boundary used to separate multipart components
+	boundary string
+
+	// result will be inside this field
+	Components map[string]*MultipartComponent
+}
+
+// Represents a multipart component
+type MultipartComponent struct {
+	// whether this component is a file
+	// if not, it is a simple variable data
+	File bool
+
+	// actual data
+	Data []string
+}
diff --git a/request_builder.go b/request_builder.go
index d8b569d..1ec6a9b 100644
--- a/request_builder.go
+++ b/request_builder.go
@@ -14,61 +14,15 @@ import (
 // from a http.Request
 func buildRequest(req *http.Request) (*Request, error) {
 
-	/* (1) Init request */
+	/* (1) Get useful data */
 	uri := NormaliseUri(req.URL.Path)
-	rawpost := FetchFormData(req)
-	rawget := FetchGetData(req)
+	uriparts := strings.Split(uri, "/")
+
+	/* (2) Init request */
 	inst := &Request{
-		Uri:      strings.Split(uri, "/"),
-		GetData:  make(map[string]interface{}, 0),
-		FormData: make(map[string]interface{}, 0),
-		UrlData:  make([]interface{}, 0),
-		Data:     make(map[string]interface{}, 0),
-	}
-	inst.ControllerUri = make([]string, 0, len(inst.Uri))
-
-	/* (2) Fill 'Data' with GET data */
-	for name, rawdata := range rawget {
-
-		// 1. Parse arguments
-		data := parseHttpData(rawdata)
-
-		if data == nil {
-			continue
-		}
-
-		// 2. prevent injections
-		if isParameterNameInjection(name) {
-			log.Printf("get.name_injection:  '%s'\n", name)
-			delete(inst.GetData, name)
-			continue
-		}
-
-		// 3. add into data
-		inst.GetData[name] = data
-		inst.Data[fmt.Sprintf("GET@%s", name)] = data
-	}
-
-	/* (3) Fill 'Data' with POST data */
-	for name, rawdata := range rawpost {
-
-		// 1. Parse arguments
-		data := parseHttpData(rawdata)
-
-		if data == nil {
-			continue
-		}
-
-		// 2. prevent injections
-		if isParameterNameInjection(name) {
-			log.Printf("post.name_injection: '%s'\n", name)
-			delete(inst.FormData, name)
-			continue
-		}
-
-		// 3. add into data
-		inst.Data[name] = data
-		inst.FormData[name] = data
+		Uri:           uriparts,
+		ControllerUri: make([]string, 0, len(uriparts)),
+		Data:          buildRequestDataFromRequest(req),
 	}
 
 	return inst, nil
@@ -93,20 +47,6 @@ func NormaliseUri(uri string) string {
 	return uri
 }
 
-// FetchGetData extracts the GET data
-// from an HTTP request
-func FetchGetData(req *http.Request) map[string]interface{} {
-
-	res := make(map[string]interface{})
-
-	for name, value := range req.URL.Query() {
-		res[name] = value
-	}
-
-	return res
-
-}
-
 // FetchFormData extracts FORM data
 //
 // - parse 'form-data' if not supported (not POST requests)
@@ -167,16 +107,10 @@ func FetchFormData(req *http.Request) map[string]interface{} {
 	return res
 }
 
-// isParameterNameInjection returns whether there is
-// a parameter name injection:
-// - inferred GET parameters
-// - inferred URL parameters
-func isParameterNameInjection(pName string) bool {
-	return strings.HasPrefix(pName, "GET@") || strings.HasPrefix(pName, "URL#")
-}
-
 // parseHttpData parses http GET/POST data
-// - []string of 1 element : return json of element 0
+// - []string
+//		- size = 1 : return json of first element
+//		- size > 1 : return array of json elements
 // - string : return json if valid, else return raw string
 func parseHttpData(data interface{}) interface{} {
 	dtype := reflect.TypeOf(data)
@@ -252,6 +186,6 @@ func parseHttpData(data interface{}) interface{} {
 	}
 
 	/* (3) NIL if unknown type */
-	return nil
+	return dvalue
 
 }
diff --git a/request_data.go b/request_data.go
new file mode 100644
index 0000000..f720502
--- /dev/null
+++ b/request_data.go
@@ -0,0 +1,220 @@
+package gfw
+
+import (
+	"encoding/json"
+	"fmt"
+	"git.xdrm.io/gfw/internal/multipart"
+	"log"
+	"net/http"
+	"strings"
+)
+
+// buildRequestDataFromRequest builds a 'RequestData'
+// from an http request
+func buildRequestDataFromRequest(req *http.Request) *RequestData {
+
+	i := &RequestData{
+		Url:  make([]*RequestParameter, 0),
+		Get:  make(map[string]*RequestParameter),
+		Form: make(map[string]*RequestParameter),
+		Set:  make(map[string]*RequestParameter),
+	}
+
+	// GET (query) data
+	i.fetchGet(req)
+
+	// no Form if GET
+	if req.Method == "GET" {
+		return i
+	}
+
+	// POST (body) data
+	i.fetchForm(req)
+
+	return i
+
+}
+
+// bindUrl stores URL data and fills 'Set'
+// with creating pointers inside 'Url'
+func (i *RequestData) fillUrl(data []string) {
+
+	for index, value := range data {
+
+		// create set index
+		setindex := fmt.Sprintf("URL#%d", index)
+
+		// store value in 'Set'
+		i.Set[setindex] = &RequestParameter{
+			Parsed: false,
+			Value:  value,
+		}
+
+		// create link in 'Url'
+		i.Url = append(i.Url, i.Set[setindex])
+
+	}
+
+}
+
+// fetchGet stores data from the QUERY (in url parameters)
+func (i *RequestData) fetchGet(req *http.Request) {
+
+	for name, value := range req.URL.Query() {
+
+		// prevent injections
+		if isParameterNameInjection(name) {
+			log.Printf("get.injection: '%s'\n", name)
+			continue
+		}
+
+		// create set index
+		setindex := fmt.Sprintf("GET@%s", name)
+
+		// store value in 'Set'
+		i.Set[setindex] = &RequestParameter{
+			Parsed: false,
+			Value:  value,
+		}
+
+		// create link in 'Get'
+		i.Get[name] = i.Set[setindex]
+
+	}
+
+}
+
+// fetchForm stores FORM data
+//
+// - parse 'form-data' if not supported (not POST requests)
+// - parse 'x-www-form-urlencoded'
+// - parse 'application/json'
+func (i *RequestData) fetchForm(req *http.Request) {
+
+	contentType := req.Header.Get("Content-Type")
+
+	// parse json
+	if strings.HasPrefix(contentType, "application/json") {
+		i.parseJsonForm(req)
+		return
+	}
+
+	// parse urlencoded
+	if strings.HasPrefix(contentType, "application/x-www-form-urlencoded") {
+		i.parseUrlencodedForm(req)
+		return
+	}
+
+	// parse multipart
+	if strings.HasPrefix(contentType, "multipart/form-data; boundary=") {
+		i.parseMultipartForm(req)
+		return
+	}
+
+	// if unknown type store nothing
+}
+
+// parseJsonForm parses JSON from the request body inside 'Form'
+// and 'Set'
+func (i *RequestData) parseJsonForm(req *http.Request) {
+
+	parsed := make(map[string]interface{}, 0)
+
+	decoder := json.NewDecoder(req.Body)
+
+	// if parse error: do nothing
+	if err := decoder.Decode(&parsed); err != nil {
+		return
+	}
+
+	// else store values 'parsed' values
+	for name, value := range parsed {
+
+		// prevent injections
+		if isParameterNameInjection(name) {
+			log.Printf("post.injection: '%s'\n", name)
+			continue
+		}
+
+		// store value in 'Set'
+		i.Set[name] = &RequestParameter{
+			Parsed: true,
+			Value:  value,
+		}
+
+		// create link in 'Form'
+		i.Form[name] = i.Set[name]
+
+	}
+
+}
+
+// parseUrlencodedForm parses urlencoded from the request body inside 'Form'
+// and 'Set'
+func (i *RequestData) parseUrlencodedForm(req *http.Request) {
+
+	// use http.Request interface
+	req.ParseForm()
+
+	for name, value := range req.PostForm {
+
+		// prevent injections
+		if isParameterNameInjection(name) {
+			log.Printf("post.injection: '%s'\n", name)
+			continue
+		}
+
+		// store value in 'Set'
+		i.Set[name] = &RequestParameter{
+			Parsed: false,
+			Value:  value,
+		}
+
+		// create link in 'Form'
+		i.Form[name] = i.Set[name]
+	}
+
+}
+
+// parseMultipartForm parses multi-part from the request body inside 'Form'
+// and 'Set'
+func (i *RequestData) parseMultipartForm(req *http.Request) {
+
+	/* (1) Create reader */
+	mpr := multipart.CreateReader(req)
+
+	/* (2) Parse multipart */
+	mpr.Parse()
+
+	/* (3) Store data into 'Form' and 'Set */
+	for name, component := range mpr.Components {
+
+		// prevent injections
+		if isParameterNameInjection(name) {
+			log.Printf("post.injection: '%s'\n", name)
+			continue
+		}
+
+		// store value in 'Set'
+		i.Set[name] = &RequestParameter{
+			Parsed: false,
+			File:   component.File,
+			Value:  component.Data,
+		}
+
+		// create link in 'Form'
+		i.Form[name] = i.Set[name]
+
+	}
+
+	return
+
+}
+
+// isParameterNameInjection returns whether there is
+// a parameter name injection:
+// - inferred GET parameters
+// - inferred URL parameters
+func isParameterNameInjection(pName string) bool {
+	return strings.HasPrefix(pName, "GET@") || strings.HasPrefix(pName, "URL#")
+}
diff --git a/router.go b/router.go
index 0f32db5..5234f16 100644
--- a/router.go
+++ b/router.go
@@ -41,14 +41,8 @@ func (s *Server) route(res http.ResponseWriter, req *http.Request) {
 
 	}
 
-	/* (3) Extract URI params */
-	uriParams := request.Uri[uriIndex:]
-
-	/* (4) Store them as Data */
-	for i, data := range uriParams {
-		request.UrlData = append(request.UrlData, data)
-		request.Data[fmt.Sprintf("URL#%d", i)] = data
-	}
+	/* (3) Extract & store URI params */
+	request.Data.fillUrl(request.Uri[uriIndex:])
 
 	/* (3) Check method
 	---------------------------------------------------------*/
@@ -82,7 +76,7 @@ func (s *Server) route(res http.ResponseWriter, req *http.Request) {
 		fmt.Printf("- %s: %v | '%v'\n", name, *param.Optional, *param.Rename)
 
 		/* (1) Extract value */
-		value, isset := request.Data[name]
+		p, isset := request.Data.Set[name]
 
 		/* (2) OPTIONAL ? */
 		if !isset {
@@ -99,20 +93,23 @@ func (s *Server) route(res http.ResponseWriter, req *http.Request) {
 				paramError.BindArgument(name)
 				break
 
-				// set default value if optional
+				// set default p if optional
 			} else {
-				value = *param.Default
+				p = &RequestParameter{
+					Parsed: true,
+					Value:  *param.Default,
+				}
 			}
 
 		}
 
 		/* (3) Check type */
-		isValid := s.Checker.Run(param.Type, value)
+		isValid := s.Checker.Run(param.Type, p.Value)
 		if isValid != nil {
 			paramError = ErrInvalidParam
 			paramError.BindArgument(name)
 			paramError.BindArgument(param.Type)
-			paramError.BindArgument(value)
+			paramError.BindArgument(p.Value)
 			break
 		}
 
diff --git a/types.go b/types.go
index c5d2ad4..4539611 100644
--- a/types.go
+++ b/types.go
@@ -13,10 +13,56 @@ type Server struct {
 }
 
 type Request struct {
-	Uri           []string
+	// corresponds to the list of uri components
+	//  featuring in the request URI
+	Uri []string
+
+	// portion of the URI that corresponds to the controllerpath
 	ControllerUri []string
-	FormData      map[string]interface{}
-	GetData       map[string]interface{}
-	UrlData       []interface{}
-	Data          map[string]interface{}
+
+	// contains all data from URL, GET, and FORM
+	Data *RequestData
+}
+
+type RequestData struct {
+
+	// ordered values from the URI
+	//  catches all after the controller path
+	//
+	// points to Request.Data
+	Url []*RequestParameter
+
+	// uri parameters following the QUERY format
+	//
+	// points to Request.Data
+	Get map[string]*RequestParameter
+
+	// form data depending on the Content-Type:
+	//  'application/json'                  => key-value pair is parsed as json into the map
+	//  'application/x-www-form-urlencoded' => standard parameters as QUERY parameters
+	//  'multipart/form-data'               => parse form-data format
+	//
+	// points to Request.Data
+	Form map[string]*RequestParameter
+
+	// contains URL+GET+FORM data with prefixes:
+	// - FORM: no prefix
+	// - URL:  'URL#' followed by the index in Uri
+	// - GET:  'GET@' followed by the key in GET
+	Set map[string]*RequestParameter
+}
+
+// RequestParameter represents an http request parameter
+// that can be of type URL, GET, or FORM (multipart, json, urlencoded)
+type RequestParameter struct {
+	// whether the value has been json-parsed
+	// for optimisation purpose, parameters are only parsed
+	// if they are required by the current controller
+	Parsed bool
+
+	// whether the value is a file
+	File bool
+
+	// the actual parameter value
+	Value interface{}
 }