diff --git a/convert.go b/convert.go
index d06434d..68e16b9 100644
--- a/convert.go
+++ b/convert.go
@@ -6,18 +6,20 @@ import (
 	"time"
 )
 
-func ConvertToPDF(folderPath string, filesPaths []string, contType ContentType) (resultingPath string, error error) {
+func ConvertToPDF(folderPath string, filesPaths []string, contType ContentType) (resultingPath string, err error) {
 	switch contType {
 	case Images:
 		return ImagesToPDF(folderPath, filesPaths)
 	case Office:
 		return OfficeToPDF(folderPath, filesPaths)
+	case Pdfs:
+		return PdfToPDF(folderPath, filesPaths)
 	default:
-		return "", fmt.Errorf("Unhandled ContentType with %d index", contType)
+		return "", fmt.Errorf("unhandled ContentType with %d index", contType)
 	}
 }
 
-func ImagesToPDF(folderPath string, filesPaths []string) (resultingPath string, error error) {
+func ImagesToPDF(folderPath string, filesPaths []string) (resultingPath string, err error) {
 	resultingPath = createResultingPath(folderPath, "Images")
 
 	if err := runCommand("convert", append(filesPaths, resultingPath)...); err != nil {
@@ -27,10 +29,10 @@ func ImagesToPDF(folderPath string, filesPaths []string) (resultingPath string,
 	return resultingPath, nil
 }
 
-func OfficeToPDF(folderPath string, filesPaths []string) (resultingPath string, error error) {
+func OfficeToPDF(folderPath string, filesPaths []string) (resultingPath string, err error) {
 	resultingPath = createResultingPath(folderPath, "Office document")
 
-	err := runCommand(
+	err = runCommand(
 		"soffice", "--headless", "--nologo", "--nofirststartwizard",
 		"--norestore", "--convert-to", "pdf", "--outdir", folderPath, filesPaths[0],
 	)
@@ -38,7 +40,22 @@ func OfficeToPDF(folderPath string, filesPaths []string) (resultingPath string,
 		return "", err
 	}
 
-	err = runCommand("mv", folderPath + "/" + "0.pdf", resultingPath)
+	err = runCommand("mv", folderPath+"/"+"0.pdf", resultingPath)
+	if err != nil {
+		return "", err
+	}
+
+	return resultingPath, nil
+}
+
+func PdfToPDF(folderPath string, filesPath []string) (resultingPath string, err error) {
+	resultingPath = createResultingPath(folderPath, "PDFs")
+
+	err = runCommand("gs", append([]string{
+		"-sDEVICE=pdfwrite", "-dCompressFonts=true", "-dPDFSETTINGS=/ebook",
+		"-dNOPAUSE", "-dQUIET", "-dBATCH", "-sOutputFile=" + resultingPath,
+	}, filesPath...)...)
+
 	if err != nil {
 		return "", err
 	}
diff --git a/main.go b/main.go
index a3b8a68..fe32153 100644
--- a/main.go
+++ b/main.go
@@ -30,7 +30,7 @@ func indexHandler(w http.ResponseWriter, r *http.Request) {
 
 const UPLOADS_FOLDER_PREFIX = "./uploads/"
 
-func saveFilesOnDisk(files []*multipart.FileHeader) (folderPath string, filesPaths []string, error error) {
+func saveFilesOnDisk(files []*multipart.FileHeader) (folderPath string, filesPaths []string, err error) {
 	// Create folder for uploaded files
 
 	folderPath = UPLOADS_FOLDER_PREFIX + strconv.FormatInt(time.Now().Unix(), 10)
@@ -78,9 +78,10 @@ type ContentType int
 const (
 	Images ContentType = iota
 	Office
+	Pdfs
 )
 
-func detectContentType(files []*multipart.FileHeader) (contentType ContentType, error error) {
+func detectContentType(files []*multipart.FileHeader) (contentType ContentType, err error) {
 	for _, file := range files {
 		fileExt := strings.ToLower(filepath.Ext(file.Filename))
 		switch fileExt {
@@ -88,10 +89,12 @@ func detectContentType(files []*multipart.FileHeader) (contentType ContentType,
 			if len(files) == 1 {
 				return Office, nil
 			} else {
-				return contentType, fmt.Errorf("Expected one document, got %d", len(files))
+				return contentType, fmt.Errorf("expected one document, got %d", len(files))
 			}
-		case ".jpg", ".jpeg", ".png", ".pdf":
+		case ".jpg", ".jpeg", ".png":
 			contentType = Images
+		case ".pdf":
+			contentType = Pdfs
 		default:
 			return contentType, fmt.Errorf("%s file extension is unsupported yet", fileExt)
 		}
@@ -140,7 +143,7 @@ func uploadHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	w.Header().Set("Content-Disposition", "attachment; filename=\"" + filepath.Base(resFile) + "\"")
+	w.Header().Set("Content-Disposition", "attachment; filename=\""+filepath.Base(resFile)+"\"")
 
 	http.ServeFile(w, r, resFile)
 }