diff --git a/lib/utils/Utils.js b/lib/utils/Utils.js
index 6be6a0f6..9543ca23 100644
--- a/lib/utils/Utils.js
+++ b/lib/utils/Utils.js
@@ -24,11 +24,13 @@ class NoStreamingDataError extends InnertubeError {};
 /**
  * Utility to help access deep properties of an object.
  * 
- * @param {object} obj - The object.
- * @param {string} key - Key of the property being accessed.
- * @param {string} target - Anything that might be inside of the property.
- * @param {number} depth - Maximum number of nested objects to flatten.
- * @param {boolean} safe - If set to true arrays will be preserved.
+ * @param {object} obj - the object.
+ * @param {string} key - key of the property being accessed.
+ * @param {string} target - anything that might be inside of the property.
+ * @param {number} depth - maximum number of nested objects to flatten.
+ * @param {boolean} safe - if set to true arrays will be preserved.
+ * 
+ * @returns {object|Array.<any>}
  */
 function findNode(obj, key, target, depth, safe = true) {
   const flat_obj = Flatten(obj, { safe, maxDepth: depth || 2 });
@@ -38,11 +40,13 @@ function findNode(obj, key, target, depth, safe = true) {
 }
 
 /**
- * Gets a string between two delimiters.
+ * Finds a string between two delimiters.
  *
- * @param {string} data - The data.
- * @param {string} start_string - Start string.
- * @param {string} end_string - End string.
+ * @param {string} data - the data.
+ * @param {string} start_string - start string.
+ * @param {string} end_string - end string.
+ * 
+ * @returns {string}
  */
 function getStringBetweenStrings(data, start_string, end_string) {
   const regex = new RegExp(`${escapeStringRegexp(start_string)}(.*?)${escapeStringRegexp(end_string)}`, 's');
@@ -88,6 +92,12 @@ function generateSidAuth(sid) {
   return ['SAPISIDHASH', [timestamp, gen_hash].join('_')].join(' ');
 }
 
+/**
+ * Generates a random string with a given length.
+ * 
+ * @param {number} length
+ * @returns {string}
+ */
 function generateRandomString(length) {
   const result = [];
   const alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_';