diff --git a/testdata/sunny/.fileRemove2.txt b/testdata/sunny/.fileRemove2.txt
new file mode 100644
index 0000000..e69de29
diff --git a/testdata/sunny/.removableDir/.fileRemove1.txt b/testdata/sunny/.removableDir/.fileRemove1.txt
new file mode 100644
index 0000000..e69de29
diff --git a/testdata/sunny/subcategory/file3.md b/testdata/sunny/subcategory/file3.md
index 78414fe..996faa7 100644
--- a/testdata/sunny/subcategory/file3.md
+++ b/testdata/sunny/subcategory/file3.md
@@ -9,3 +9,8 @@
 * vëns
 * do
 * trīs
+
+![nuruoda](test1.img)
+![nuruoda2](../test0.img)
+[nuruoda3](test1.img)
+[url](http://test1.img)
diff --git a/tree.go b/tree.go
index 64d779c..6335cb8 100644
--- a/tree.go
+++ b/tree.go
@@ -2,6 +2,7 @@ package zord_tree
 
 import (
 	"bufio"
+	"bytes"
 	"crypto/md5"
 	"errors"
 	"fmt"
@@ -11,9 +12,11 @@ import (
 	"io"
 	"io/fs"
 	"io/ioutil"
+	"net/url"
 	"os"
 	"path"
 	"path/filepath"
+	"regexp"
 	"strings"
 )
 
@@ -111,8 +114,15 @@ func BuildTree(dirPath string, meta []string) (Tree, error) {
 }
 
 func PopulateTree(sourcePath string, destPath string, meta []string, customMeta map[string]func() string) error {
+	var err error
+	var attachmentRegistry map[string]string
 
-	attachmentRegistry, err := moveAttachments(sourcePath)
+	err = removeHidden(sourcePath)
+	if err != nil {
+		return err
+	}
+
+	attachmentRegistry, err = moveAttachments(sourcePath)
 	if err != nil {
 		return err
 	}
@@ -144,6 +154,31 @@ func PopulateTree(sourcePath string, destPath string, meta []string, customMeta
 	return err
 }
 
+func removeHidden(dir string) error {
+	var toRemovePaths []string
+
+	err := filepath.Walk(dir, func(fullPath string, info os.FileInfo, e error) error {
+		if e != nil {
+			return e
+		}
+
+		if strings.HasPrefix(info.Name(), ".") {
+			toRemovePaths = append(toRemovePaths, fullPath)
+		}
+
+		return nil
+	})
+
+	for _, removePath := range toRemovePaths {
+		e := os.RemoveAll(removePath)
+		if e != nil {
+			return e
+		}
+	}
+
+	return err
+}
+
 func moveAttachments(dir string) (map[string]string, error) {
 	attachmentRegistry := make(map[string]string)
 
@@ -213,7 +248,23 @@ func fixFormat(dir string, attachmentRegistry map[string]string) error {
 					content = content + "\n" + line
 				}
 			}
-			err = ioutil.WriteFile(fullPath, []byte(content), 0644)
+
+			// fix attachments
+			data := []byte(content)
+			re := regexp.MustCompile(`!?\[([^\]*]*)\]\(([^\) ]*)\)`)
+
+			for _, match := range re.FindAllSubmatch(data, -1) {
+				_, err := url.ParseRequestURI(string(match[2][:]))
+				if err != nil {
+					aPath := path.Clean(fmt.Sprintf("%s/%s", path.Dir(fullPath), string(match[2][:])))
+					if _, ok := attachmentRegistry[aPath]; ok {
+						link := fmt.Sprintf("(%s)[%s]", match[1], attachmentRegistry[aPath])
+						data = bytes.Replace(data, match[0], []byte(link), 1)
+					}
+				}
+			}
+
+			err = ioutil.WriteFile(fullPath, data, 0644)
 
 			// format split line
 			b, err := ioutil.ReadFile(fullPath) // just pass the file name
diff --git a/tree_test.go b/tree_test.go
index 9c5d62f..ee16652 100644
--- a/tree_test.go
+++ b/tree_test.go
@@ -9,10 +9,10 @@ import (
 )
 
 func prepare(t *testing.T) {
-	err := os.Remove("./testdata/sunny1")
+	err := os.RemoveAll("./testdata/sunny1")
 	if err != nil {
 	}
-	err = os.Remove("./testdata/sunny2")
+	err = os.RemoveAll("./testdata/sunny2")
 	if err != nil {
 	}
 	err = cp.Copy("./testdata/sunny", "./testdata/sunny1")