diff --git a/README.md b/README.md
index 3c27b402..4f9c3a7d 100644
--- a/README.md
+++ b/README.md
@@ -153,8 +153,8 @@ tvg::Initializer::term(tvg::CanvasEngine::Sw);
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-# Tools
-## SVG to PNG
+## Tools
+### SVG to PNG
 ThorVG provides an executable `svg2png` converter which generate a PNG file from a SVG file.
 
 To use `svg2png`, you must turn on its feature in the build option.