diff --git a/searx/data/engine_traits.json b/searx/data/engine_traits.json
index 01b007397..b7c2cabc9 100644
--- a/searx/data/engine_traits.json
+++ b/searx/data/engine_traits.json
@@ -6,7 +6,6 @@
         "book_nonfiction",
         "book_fiction",
         "book_unknown",
-        "journal_article",
         "book_comic",
         "magazine",
         "standards_document"
@@ -85,13 +84,11 @@
     "custom": {
       "title": {
         "de": "Spezial:Suche",
-        "fa": "\u0648\u06cc\u0698\u0647:\u062c\u0633\u062a\u062c\u0648",
         "ja": "\u7279\u5225:\u691c\u7d22",
         "zh": "Special:\u641c\u7d22"
       },
       "wiki_netloc": {
         "de": "wiki.archlinux.de",
-        "fa": "wiki.archusers.ir",
         "ja": "wiki.archlinux.jp",
         "zh": "wiki.archlinuxcn.org"
       }
@@ -107,7 +104,6 @@
       "el": "\u0395\u03bb\u03bb\u03b7\u03bd\u03b9\u03ba\u03ac",
       "en": "English",
       "es": "Espa\u00f1ol",
-      "fa": "\u0641\u0627\u0631\u0633\u06cc",
       "fi": "Suomi",
       "fr": "Fran\u00e7ais",
       "he": "\u05e2\u05d1\u05e8\u05d9\u05ea",
@@ -1739,6 +1735,7 @@
         "fr-FR": "fr-fr",
         "it": "it",
         "ja-JP": "ja-jp",
+        "pl": "pl",
         "pt-BR": "pt-br",
         "sq-AL": "sq-al"
       }
@@ -1811,6 +1808,7 @@
         "fr-FR": "fr-fr",
         "it": "it",
         "ja-JP": "ja-jp",
+        "pl": "pl",
         "pt-BR": "pt-br",
         "sq-AL": "sq-al"
       }
@@ -1883,6 +1881,7 @@
         "fr-FR": "fr-fr",
         "it": "it",
         "ja-JP": "ja-jp",
+        "pl": "pl",
         "pt-BR": "pt-br",
         "sq-AL": "sq-al"
       }
@@ -1955,6 +1954,7 @@
         "fr-FR": "fr-fr",
         "it": "it",
         "ja-JP": "ja-jp",
+        "pl": "pl",
         "pt-BR": "pt-br",
         "sq-AL": "sq-al"
       }
@@ -2094,7 +2094,6 @@
     "custom": {
       "lang_region": {
         "ar-DZ": "ar_DZ",
-        "ar-JO": "ar_JO",
         "ar-SA": "ar_SA",
         "bn-IN": "bn_IN",
         "de-CH": "de_CH",
@@ -2228,6 +2227,7 @@
       "hr-HR": "hr-hr",
       "hu-HU": "hu-hu",
       "id-ID": "id-en",
+      "is-IS": "is-is",
       "it-IT": "it-it",
       "ja-JP": "jp-jp",
       "ko-KR": "kr-kr",
@@ -2258,7 +2258,6 @@
     "custom": {
       "lang_region": {
         "ar-DZ": "ar_DZ",
-        "ar-JO": "ar_JO",
         "ar-SA": "ar_SA",
         "bn-IN": "bn_IN",
         "de-CH": "de_CH",
@@ -2392,6 +2391,7 @@
       "hr-HR": "hr-hr",
       "hu-HU": "hu-hu",
       "id-ID": "id-en",
+      "is-IS": "is-is",
       "it-IT": "it-it",
       "ja-JP": "jp-jp",
       "ko-KR": "kr-kr",
@@ -2422,7 +2422,6 @@
     "custom": {
       "lang_region": {
         "ar-DZ": "ar_DZ",
-        "ar-JO": "ar_JO",
         "ar-SA": "ar_SA",
         "bn-IN": "bn_IN",
         "de-CH": "de_CH",
@@ -2556,6 +2555,7 @@
       "hr-HR": "hr-hr",
       "hu-HU": "hu-hu",
       "id-ID": "id-en",
+      "is-IS": "is-is",
       "it-IT": "it-it",
       "ja-JP": "jp-jp",
       "ko-KR": "kr-kr",
@@ -2586,7 +2586,6 @@
     "custom": {
       "lang_region": {
         "ar-DZ": "ar_DZ",
-        "ar-JO": "ar_JO",
         "ar-SA": "ar_SA",
         "bn-IN": "bn_IN",
         "de-CH": "de_CH",
@@ -2720,6 +2719,7 @@
       "hr-HR": "hr-hr",
       "hu-HU": "hu-hu",
       "id-ID": "id-en",
+      "is-IS": "is-is",
       "it-IT": "it-it",
       "ja-JP": "jp-jp",
       "ko-KR": "kr-kr",
@@ -2750,7 +2750,6 @@
     "custom": {
       "lang_region": {
         "ar-DZ": "ar_DZ",
-        "ar-JO": "ar_JO",
         "ar-SA": "ar_SA",
         "bn-IN": "bn_IN",
         "de-CH": "de_CH",
@@ -2884,6 +2883,7 @@
       "hr-HR": "hr-hr",
       "hu-HU": "hu-hu",
       "id-ID": "id-en",
+      "is-IS": "is-is",
       "it-IT": "it-it",
       "ja-JP": "jp-jp",
       "ko-KR": "kr-kr",
@@ -6015,6 +6015,7 @@
         "AE",
         "AF",
         "AG",
+        "AI",
         "AL",
         "AM",
         "AO",
@@ -6041,7 +6042,6 @@
         "BQ",
         "BR",
         "BS",
-        "BT",
         "BW",
         "BY",
         "BZ",
@@ -6124,6 +6124,7 @@
         "KW",
         "KY",
         "KZ",
+        "LA",
         "LB",
         "LC",
         "LK",
@@ -6217,6 +6218,7 @@
         "VA",
         "VC",
         "VE",
+        "VG",
         "VI",
         "VN",
         "VU",
@@ -6253,7 +6255,6 @@
       "da": "danish",
       "de": "german",
       "dsb": "lower sorbian",
-      "dz": "dzongkha",
       "el": "greek",
       "en": "english",
       "eo": "esperanto",
@@ -6330,6 +6331,7 @@
       "so": "somali",
       "sq": "albanian",
       "sr": "serbian",
+      "su": "sundanese",
       "sv": "swedish",
       "sw": "swahili",
       "ta": "tamil",
@@ -6584,6 +6586,7 @@
       "km": "km",
       "kn": "kn",
       "ko": "ko",
+      "ku": "ku",
       "lb": "lb",
       "lt": "lt",
       "lv": "lv",
@@ -7011,6 +7014,7 @@
         "km": "km.wikipedia.org",
         "kn": "kn.wikipedia.org",
         "ko": "ko.wikipedia.org",
+        "ku": "ku.wikipedia.org",
         "lb": "lb.wikipedia.org",
         "lt": "lt.wikipedia.org",
         "lv": "lv.wikipedia.org",
@@ -7099,6 +7103,7 @@
       "km": "km",
       "kn": "kn",
       "ko": "ko",
+      "ku": "ku",
       "lb": "lb",
       "lt": "lt",
       "lv": "lv",