diff --git a/internal/app/images.go b/internal/app/images.go
index 4a39343..ad37aaf 100644
--- a/internal/app/images.go
+++ b/internal/app/images.go
@@ -20,7 +20,10 @@ func synchronizeImages(context *appContext, fileSystem map[string]*localFileStru
 		return err
 	}
 
-	uploadImages(missingFiles)
+	err = uploadImages(context, missingFiles, existingCategories)
+	if err != nil {
+		return err
+	}
 
 	return errors.New("synchronizeImages: NOT IMPLEMENTED")
 }
@@ -53,6 +56,19 @@ func findMissingImages(context *appContext, imageFiles []*localFileStructure.Ima
 	return missingFiles, nil
 }
 
-func uploadImages(missingFiles []*localFileStructure.ImageNode) {
+func uploadImages(context *appContext, missingFiles []*localFileStructure.ImageNode, existingCategories map[string]*category.PiwigoCategory) error {
 	logrus.Warnln("Uploading missing images (NotImplemented)")
+
+	for _, file := range missingFiles {
+		logrus.Infof("Uploading %s", file.Path)
+		categoryId := existingCategories[file.CategoryName].Id
+
+		//TODO handle added id
+		_, err := picture.UploadImage(context.Piwigo, file.Path, file.Md5Sum, categoryId)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
 }
diff --git a/internal/pkg/localFileStructure/imageList.go b/internal/pkg/localFileStructure/imageList.go
index 34c7eb3..72ae3e0 100644
--- a/internal/pkg/localFileStructure/imageList.go
+++ b/internal/pkg/localFileStructure/imageList.go
@@ -22,10 +22,10 @@ func GetImageList(fileSystem map[string]*FilesystemNode) ([]*ImageNode, error) {
 		logrus.Debugf("Local Image %s - %s - %s", md5sum, file.ModTime.Format(time.RFC3339), file.Path)
 
 		imageFiles = append(imageFiles, &ImageNode{
-			Path:      file.Path,
-			Directory: filepath.Dir(file.Path),
-			ModTime:   file.ModTime,
-			Md5Sum:    md5sum,
+			Path:         file.Path,
+			CategoryName: filepath.Dir(file.Key),
+			ModTime:      file.ModTime,
+			Md5Sum:       md5sum,
 		})
 	}
 
diff --git a/internal/pkg/localFileStructure/types.go b/internal/pkg/localFileStructure/types.go
index c422739..92b33a3 100644
--- a/internal/pkg/localFileStructure/types.go
+++ b/internal/pkg/localFileStructure/types.go
@@ -18,8 +18,8 @@ func (n *FilesystemNode) String() string {
 }
 
 type ImageNode struct {
-	Path      string
-	Directory string
-	ModTime   time.Time
-	Md5Sum    string
+	Path         string
+	CategoryName string
+	ModTime      time.Time
+	Md5Sum       string
 }
diff --git a/internal/pkg/piwigo/picture/types.go b/internal/pkg/piwigo/picture/types.go
index c51acd4..5edf04d 100644
--- a/internal/pkg/piwigo/picture/types.go
+++ b/internal/pkg/piwigo/picture/types.go
@@ -5,6 +5,11 @@ type uploadChunkResponse struct {
 	Result interface{} `json:"result"`
 }
 
+type fileAddResponse struct {
+	Status string `json:"stat"`
+	Result string `json:"result"`
+}
+
 type imageExistResponse struct {
 	Stat   string            `json:"stat"`
 	Result map[string]string `json:"result"`
diff --git a/internal/pkg/piwigo/picture/upload.go b/internal/pkg/piwigo/picture/upload.go
index 7a0ab99..506a39e 100644
--- a/internal/pkg/piwigo/picture/upload.go
+++ b/internal/pkg/piwigo/picture/upload.go
@@ -1,10 +1,95 @@
 package picture
 
-/*
-http://pictures.haefelfinger.net/ws.php?format=json
-{
-    "data": "123456",
-    "original_sum": "1234567",
-    "position": "1"
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"github.com/sirupsen/logrus"
+	"haefelfinger.net/piwigo/DirectoriesToAlbums/internal/pkg/piwigo"
+	"net/http"
+	"net/url"
+	"strconv"
+)
+
+func UploadImage(context *piwigo.PiwigoContext, filePath string, md5sum string, category int) (int, error) {
+
+	if context.Cookies == nil {
+		return 0, errors.New("Not logged in and no cookies found! Can not get the category list!")
+	}
+
+	logrus.Infof("Uploading %s", filePath)
+
+	// split into chunks
+	// upload chunks
+	// finalize upload
+
+
+	return 0, nil
+}
+
+
+
+func uploadImageChunk(context *piwigo.PiwigoContext, base64chunk string, md5sum string, position int) error {
+	formData := url.Values{}
+	formData.Set("method", "pwg.images.addChunk")
+	formData.Set("data", base64chunk)
+	formData.Set("original_sum", md5sum)
+	// required by the API for compatibility
+	formData.Set("type", "file")
+	formData.Set("position", strconv.Itoa(position))
+
+	logrus.Tracef("Uploading chunk %d of file with sum %s", position, md5sum)
+
+	client := http.Client{Jar: context.Cookies}
+	response, err := client.PostForm(context.Url, formData)
+	if err != nil {
+		logrus.Errorln("The HTTP request failed with error %s", err)
+		return err
+	}
+	defer response.Body.Close()
+
+	var uploadChunkResponse uploadChunkResponse
+	if err := json.NewDecoder(response.Body).Decode(&uploadChunkResponse); err != nil {
+		logrus.Errorln(err)
+		return err
+	}
+
+	if uploadChunkResponse.Status != "ok" {
+		logrus.Errorf("Got state %s while uploading chunk %d of %s", uploadChunkResponse.Status, position, md5sum)
+		return errors.New(fmt.Sprintf("Got state %s while uploading chunk %d of %s", uploadChunkResponse.Status, position, md5sum))
+	}
+
+	return nil
+}
+
+
+func uploadImageFinal(context *piwigo.PiwigoContext, originalFilename string, md5sum string, categoryId int) error {
+	formData := url.Values{}
+	formData.Set("method", "pwg.images.add")
+	formData.Set("original_sum", md5sum)
+	formData.Set("original_filename", originalFilename)
+	formData.Set("categoriesi", strconv.Itoa(categoryId))
+
+	logrus.Debugf("Finalizing upload of file %s with sum %s to category %d", originalFilename, md5sum, categoryId)
+
+	client := http.Client{Jar: context.Cookies}
+	response, err := client.PostForm(context.Url, formData)
+	if err != nil {
+		logrus.Errorln("The HTTP request failed with error %s", err)
+		return err
+	}
+	defer response.Body.Close()
+
+	var fileAddResponse fileAddResponse
+	if err := json.NewDecoder(response.Body).Decode(&fileAddResponse); err != nil {
+		logrus.Errorln(err)
+		return err
+	}
+
+	if fileAddResponse.Status != "ok" {
+		logrus.Errorf("Got state %s while adding image %s", fileAddResponse.Status, originalFilename)
+		return errors.New(fmt.Sprintf("Got state %s while adding image %s", fileAddResponse.Status, originalFilename))
+	}
+
+	return nil
 }
-*/