diff --git a/assets/encode.js b/assets/encode.js
deleted file mode 100644
index 1185541..0000000
--- a/assets/encode.js
+++ /dev/null
@@ -1,52 +0,0 @@
-/** Functions from https://plantuml.com/code-javascript-synchronous
- */
-
-function encode64(data) {
-	r = "";
-	for (i=0; i<data.length; i+=3) {
- 		if (i+2==data.length) {
-			r +=append3bytes(data.charCodeAt(i), data.charCodeAt(i+1), 0);
-		} else if (i+1==data.length) {
-			r += append3bytes(data.charCodeAt(i), 0, 0);
-		} else {
-			r += append3bytes(data.charCodeAt(i), data.charCodeAt(i+1),
-				data.charCodeAt(i+2));
-		}
-	}
-	return r;
-}
-
-function append3bytes(b1, b2, b3) {
-	c1 = b1 >> 2;
-	c2 = ((b1 & 0x3) << 4) | (b2 >> 4);
-	c3 = ((b2 & 0xF) << 2) | (b3 >> 6);
-	c4 = b3 & 0x3F;
-	r = "";
-	r += encode6bit(c1 & 0x3F);
-	r += encode6bit(c2 & 0x3F);
-	r += encode6bit(c3 & 0x3F);
-	r += encode6bit(c4 & 0x3F);
-	return r;
-}
-
-function encode6bit(b) {
-	if (b < 10) {
- 		return String.fromCharCode(48 + b);
-	}
-	b -= 10;
-	if (b < 26) {
- 		return String.fromCharCode(65 + b);
-	}
-	b -= 26;
-	if (b < 26) {
- 		return String.fromCharCode(97 + b);
-	}
-	b -= 26;
-	if (b == 0) {
- 		return '-';
-	}
-	if (b == 1) {
- 		return '_';
-	}
-	return '?';
-}
\ No newline at end of file