diff --git a/examples/blur.gdshader b/examples/blur.gdshader
new file mode 100644
index 0000000..8d08069
--- /dev/null
+++ b/examples/blur.gdshader
@@ -0,0 +1,8 @@
+shader_type canvas_item;
+
+//!load ./images/swamp.jpg
+#include "res://shaderlib/blur.gdshaderinc"
+
+void fragment() {
+	COLOR = gaussian_blur(TEXTURE, UV, 48, 24.0);
+}
diff --git a/shaderlib/blur.gdshaderinc b/shaderlib/blur.gdshaderinc
new file mode 100644
index 0000000..2ee4380
--- /dev/null
+++ b/shaderlib/blur.gdshaderinc
@@ -0,0 +1,30 @@
+
+// gaussian_blur adapted from https://godotshaders.com/shader/customizable-gausian-blur/
+// original code by https://godotshaders.com/author/djbob-gaming-yt/
+// maximum radius is 64
+vec4 gaussian_blur(sampler2D texture, vec2 uv, int radius, float sigma) {
+	vec2 resolution = 1.0 / vec2(textureSize(texture, 0));
+	// calculate kernel
+	float kernel[64];
+	float sum = 0.0;
+	for (int i = 0; i <= radius; i++) {
+		kernel[i] = exp(-0.5 * float(i * i) / (sigma * sigma));
+		sum += i == 0 ? kernel[i] : 2.0 * kernel[i];
+	}
+	for (int i = 0; i <= radius; i++) {
+		kernel[i] /= sum;
+	}
+	//
+	vec4 final_color = vec4(0.0);
+	float total_weight = 0.0;
+	for (int x = -radius; x <= radius; x++) {
+		for (int y = -radius; y <= radius; y++) {
+			float weight = kernel[abs(x)] * kernel[abs(y)];
+			vec2 offset = vec2(float(x), float(y)) * resolution;
+			final_color += texture(texture, uv + offset) * weight;
+			total_weight += weight;
+		}
+	}
+	final_color /= total_weight;
+	return final_color;
+}
diff --git a/src/Editor.gd b/src/Editor.gd
index 6352620..39a2441 100644
--- a/src/Editor.gd
+++ b/src/Editor.gd
@@ -133,14 +133,16 @@ var shaderlib_regex = {
 	"transform": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/transform\.gdshaderinc\"'),
 	"transparency": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/transparency\.gdshaderinc\"'),
 	"effects": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/effects\.gdshaderinc\"'),
-	"denoise": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/denoise\.gdshaderinc\"')
+	"denoise": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/denoise\.gdshaderinc\"'),
+	"blur": RegEx.create_from_string(r'\s*\#include\s+\"res\:\/\/shaderlib\/blur\.gdshaderinc\"'),
 }
 const shaderlib_functions = {
 	"colorspaces": ["rgb2hsv", "hsv2rgb"],
 	"transform": ["place_texture"],
 	"transparency": ["alpha_blend"],
 	"effects": ["pixelate"],
-	"denoise": ["smart_denoise"]
+	"denoise": ["smart_denoise"],
+	"blur": ["gaussian_blur"],
 }
 #
 # configure Highlighter