diff --git a/hypn0/hypn0_site/services/halftone.py b/hypn0/hypn0_site/services/halftone.py
index f85acff..0d4a1b3 100644
--- a/hypn0/hypn0_site/services/halftone.py
+++ b/hypn0/hypn0_site/services/halftone.py
@@ -13,7 +13,7 @@ def encode_to_base36(num: int) -> str:
     if num < 0:
         raise ValueError("Число должно быть неотрицательным")
 
-    charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+    charset = "HYPN0xyzabcdefghijklmnopqrstuvwABCDEFGIJKLMOQRSTUVWXZ123456789"
     if num < len(charset):
         return charset[num]
 
@@ -271,18 +271,14 @@ def generate_halftone_svg(
 
     svg_template = (
         f'<!-- Generated by hypn0.xyz -->\n'
-        f'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 {width} {height}" data-generated-by="https://hypn0.xyz">'
+        f'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 {width} {height}" '
+        f'data-author="hypn0.xyz" data-generator="https://hypn0.xyz">'
         f'{svg_css}'
+        f'<desc>Generated by Hypn0 (https://hypn0.xyz)</desc>'
         f'{defs_html}'
-        f'<g id="hypn0-canvas">{groups_html}</g>'
+        f'<g id="hypn0-xyz" data-source="https://hypn0.xyz">{groups_html}</g>'
         f'</svg>'
     )
-    #         f'<!-- Generated by hypn0.xyz -->\n'
-    #         f'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 {width} {height}">'
-    #         f'{svg_css}'
-    #         f'{defs_html}'
-    #         f'<g id="hypn0.xyz" data-generated-by="hypn0.xyz">{groups_html}</g>'
-    #         f'</svg>'
 
     return svg_template
 
diff --git a/hypn0/hypn0_site/tests.py b/hypn0/hypn0_site/tests.py
index 6eb392d..56c60c0 100644
--- a/hypn0/hypn0_site/tests.py
+++ b/hypn0/hypn0_site/tests.py
@@ -71,7 +71,8 @@ class HalftoneServiceTests(BaseMediaTestCase):
         self.assertIn("</svg>", svg)
         self.assertIn("<defs>", svg)
         self.assertIn('<circle id="s', svg)
-        self.assertIn('<g id="hypn0-canvas">', svg)
+        self.assertIn('<g id="hypn0-xyz"', svg)
+        self.assertIn("<desc>Generated by Hypn0", svg)
 
     def test_generate_shapes(self):
         shapes = ["circle", "ring", "square", "diamond", "triangle", "hexagon", "star", "cross", "line", "wave", "heart"]