[instagram] use Chrome User-Agent by default (#6379)

docs/configuration.rst

@@ -663,6 +663,7 @@ Default
     * ``"gallery-dl/VERSION"``: ``[Danbooru]``, ``mangadex``
     * ``"gallery-dl/VERSION (by mikf)"``: ``[E621]``
     * ``"Patreon/72.2.28 (Android; Android 14; Scale/2.10)"``: ``patreon``
+    * ``"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36"``: ``instagram``
     * ``"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:LATEST) Gecko/20100101 Firefox/LATEST"``: otherwise
 Description
     User-Agent header value used for HTTP requests.

gallery_dl/extractor/instagram.py

@@ -29,6 +29,7 @@ class InstagramExtractor(Extractor):
     root = "https://www.instagram.com"
     cookies_domain = ".instagram.com"
     cookies_names = ("sessionid",)
+    useragent = util.USERAGENT_CHROME
     request_interval = (6.0, 12.0)
 
     def __init__(self, match):

gallery_dl/util.py

@@ -700,6 +700,9 @@ EXECUTABLE = getattr(sys, "frozen", False)
 USERAGENT = "gallery-dl/" + version.__version__
 USERAGENT_FIREFOX = ("Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:{}.0) "
                      "Gecko/20100101 Firefox/{}.0").format(_ff_ver, _ff_ver)
+USERAGENT_CHROME = ("Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
+                    "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 "
+                    "Safari/537.36")
 SPECIAL_EXTRACTORS = {"oauth", "recursive", "generic"}
 GLOBALS = {
     "contains" : contains,