diff --git a/README.md b/README.md
index 63ad5cc..41ebd41 100644
--- a/README.md
+++ b/README.md
@@ -100,7 +100,8 @@ You can edit this defaults globally by modifying `FormDataJson.defaultOptionsToJ
 'uncheckedValue': undefined,
 
 /**
- * A function, where first parameter is the input field to check for, that must return true if the field should be included
+ * A function, where first parameter is the input field to check for
+ * Must return true if the field should be included
  * All other return values, as well as no return value, will skip the input field in the progress
  * @type {function|null}
  */
@@ -116,7 +117,9 @@ You can edit this defaults globally by modifying `FormDataJson.defaultOptionsToJ
 
 /**
  * If true, than this does skip empty fields from the output
- * Empty is considered to be: an empty array (for multiple selects/checkboxes) and an empty input field (length = 0)
+ * Empty is considered to be:
+ * An empty array (for multiple selects/checkboxes)
+ * An empty input field (length = 0)
  * This does recursively remove keys
  * Example: {"agb":"1", "user" : [{"name" : ""},{"name" : ""}]} will be {"agb":"1"}
  * @type {boolean}
@@ -124,8 +127,9 @@ You can edit this defaults globally by modifying `FormDataJson.defaultOptionsToJ
 'skipEmpty': false,
 
 /**
- * A function the will be called when all file fields are read as base64 data uri
- * Note: If this is given, than the original return value from toJson() is null and the values are passed to this callback as first parameter
+ * A function that will be called when all file fields are read as base64 data uri
+ * First passed parameter to this function are the form values including all file data
+ * Note: If set, the original return value from toJson() returns null
  * @type {function|null}
  */
 'filesCallback': null,
diff --git a/dist/form-data-json.js b/dist/form-data-json.js
index c9481e9..27f2325 100644
--- a/dist/form-data-json.js
+++ b/dist/form-data-json.js
@@ -757,7 +757,8 @@ FormDataJson.defaultOptionsToJson = {
   'uncheckedValue': undefined,
 
   /**
-   * A function, where first parameter is the input field to check for, that must return true if the field should be included
+   * A function, where first parameter is the input field to check for
+   * Must return true if the field should be included
    * All other return values, as well as no return value, will skip the input field in the progress
    * @type {function|null}
    */
@@ -773,7 +774,9 @@ FormDataJson.defaultOptionsToJson = {
 
   /**
    * If true, than this does skip empty fields from the output
-   * Empty is considered to be: an empty array (for multiple selects/checkboxes) and an empty input field (length = 0)
+   * Empty is considered to be:
+   * An empty array (for multiple selects/checkboxes)
+   * An empty input field (length = 0)
    * This does recursively remove keys
    * Example: {"agb":"1", "user" : [{"name" : ""},{"name" : ""}]} will be {"agb":"1"}
    * @type {boolean}
@@ -781,8 +784,9 @@ FormDataJson.defaultOptionsToJson = {
   'skipEmpty': false,
 
   /**
-   * A function the will be called when all file fields are read as base64 data uri
-   * Note: If this is given, than the original return value from toJson() is null and the values are passed to this callback as first parameter
+   * A function that will be called when all file fields are read as base64 data uri
+   * First passed parameter to this function are the form values including all file data
+   * Note: If set, the original return value from toJson() returns null
    * @type {function|null}
    */
   'filesCallback': null,
diff --git a/docs/scripts/form-data-json.js b/docs/scripts/form-data-json.js
index c9481e9..27f2325 100644
--- a/docs/scripts/form-data-json.js
+++ b/docs/scripts/form-data-json.js
@@ -757,7 +757,8 @@ FormDataJson.defaultOptionsToJson = {
   'uncheckedValue': undefined,
 
   /**
-   * A function, where first parameter is the input field to check for, that must return true if the field should be included
+   * A function, where first parameter is the input field to check for
+   * Must return true if the field should be included
    * All other return values, as well as no return value, will skip the input field in the progress
    * @type {function|null}
    */
@@ -773,7 +774,9 @@ FormDataJson.defaultOptionsToJson = {
 
   /**
    * If true, than this does skip empty fields from the output
-   * Empty is considered to be: an empty array (for multiple selects/checkboxes) and an empty input field (length = 0)
+   * Empty is considered to be:
+   * An empty array (for multiple selects/checkboxes)
+   * An empty input field (length = 0)
    * This does recursively remove keys
    * Example: {"agb":"1", "user" : [{"name" : ""},{"name" : ""}]} will be {"agb":"1"}
    * @type {boolean}
@@ -781,8 +784,9 @@ FormDataJson.defaultOptionsToJson = {
   'skipEmpty': false,
 
   /**
-   * A function the will be called when all file fields are read as base64 data uri
-   * Note: If this is given, than the original return value from toJson() is null and the values are passed to this callback as first parameter
+   * A function that will be called when all file fields are read as base64 data uri
+   * First passed parameter to this function are the form values including all file data
+   * Note: If set, the original return value from toJson() returns null
    * @type {function|null}
    */
   'filesCallback': null,
diff --git a/src/form-data-json.js b/src/form-data-json.js
index a2c6b0f..63105b3 100644
--- a/src/form-data-json.js
+++ b/src/form-data-json.js
@@ -32,7 +32,8 @@ class FormDataJson {
     'uncheckedValue': undefined,
 
     /**
-     * A function, where first parameter is the input field to check for, that must return true if the field should be included
+     * A function, where first parameter is the input field to check for
+     * Must return true if the field should be included
      * All other return values, as well as no return value, will skip the input field in the progress
      * @type {function|null}
      */
@@ -48,7 +49,9 @@ class FormDataJson {
 
     /**
      * If true, than this does skip empty fields from the output
-     * Empty is considered to be: an empty array (for multiple selects/checkboxes) and an empty input field (length = 0)
+     * Empty is considered to be:
+     * An empty array (for multiple selects/checkboxes)
+     * An empty input field (length = 0)
      * This does recursively remove keys
      * Example: {"agb":"1", "user" : [{"name" : ""},{"name" : ""}]} will be {"agb":"1"}
      * @type {boolean}
@@ -56,8 +59,9 @@ class FormDataJson {
     'skipEmpty': false,
 
     /**
-     * A function the will be called when all file fields are read as base64 data uri
-     * Note: If this is given, than the original return value from toJson() is null and the values are passed to this callback as first parameter
+     * A function that will be called when all file fields are read as base64 data uri
+     * First passed parameter to this function are the form values including all file data
+     * Note: If set, the original return value from toJson() returns null
      * @type {function|null}
      */
     'filesCallback': null,