diff --git a/src/core/const.js b/src/core/const.js
index 4d4e9bf..4976abc 100644
--- a/src/core/const.js
+++ b/src/core/const.js
@@ -274,6 +274,37 @@
},
/**
+ * Regexp for image type by extension.
+ *
+ * @static
+ * @constant
+ * @type {RegExp|string}
+ * @example `image.png`
+ */
+ IMAGE_TYPE: /\.(gif|jpe?g|tiff|png|svg)$/i,
+
+ /**
+ * Regexp for data URI.
+ * Based on: https://github.com/ragingwind/data-uri-regex
+ *
+ * @static
+ * @constant
+ * @type {RegExp|string}
+ * @example `data:image/png;base64`
+ */
+ DATA_URI: /^\s*data:(?:([\w-]+)\/([\w+.-]+))?(?:;(charset=[\w-]+|base64))?,(.*)/i,
+
+ /**
+ * Regexp for SVG size.
+ *
+ * @static
+ * @constant
+ * @type {RegExp|string}
+ * @example ``
+ */
+ SVG_SIZE: /