diff --git a/sphinx_emoji_favicon/__init__.py b/sphinx_emoji_favicon/__init__.py
index 11105c1..c1b8d10 100644
--- a/sphinx_emoji_favicon/__init__.py
+++ b/sphinx_emoji_favicon/__init__.py
@@ -18,12 +18,24 @@
 
 
 # constants
-emoji_unicodes = set(EMOJI_DATA.keys())
+_defalut_twemoji_latest_version = "14.0.2"
 _str2emoji = {}
 _str2emoji_lang = {lang: {} for lang in LANGUAGES}
 for k, v in EMOJI_DATA.items():
+    if "status" in v and v["status"] > 2:
+        # https://carpedm20.github.io/emoji/docs/api.html#emoji-status
+        # 1: component, 2: fully-qualified, 3: minimally-qualified, 4: unqualified
+        continue
+    if "E" in v and str(v["E"]) > _defalut_twemoji_latest_version:
+        # skip emoji with newer version than twemoji latest version
+        continue
+    # limit to unicode emoji with length <= 2
+    # longer emoji strings are usually composed of multiple unicode emoji
+    if len(k) > 2:
+        continue
     for key, s in v.items():
         if key in ["status", "E", "variant"]:
+            # "E" for Emoji version: https://carpedm20.github.io/emoji/docs/api.html#emoji-version
             continue
         if key == "alias":
             for alias in s:
@@ -36,6 +48,7 @@
             _str2emoji[s] = k
             _str2emoji_lang[key][s] = k
 emoji_strs = set(_str2emoji.keys())
+emoji_unicodes = set(_str2emoji.values())
 
 
 def _url_is_reachable(url: str, timeout: float = 0.8) -> bool:
@@ -70,7 +83,6 @@ def _get_twemoji_latest_version() -> str:
         The latest twemoji version.
 
     """
-    defalut_latest_version = "14.0.2"
     url = "https://unpkg.com/twemoji@latest/dist/twemoji.min.js"
     try:
         r = requests.get(url, timeout=3)
@@ -80,9 +92,9 @@ def _get_twemoji_latest_version() -> str:
             # e.g. https://unpkg.com/twemoji@14.0.2/dist/twemoji.min.js
             return re.search("twemoji@([\\w\\.\\-]+)", r.url).group(1)
         else:
-            return defalut_latest_version
+            return _defalut_twemoji_latest_version
     except Exception:
-        return defalut_latest_version
+        return _defalut_twemoji_latest_version
 
 
 def _get_twemoji_config(twemoji_assets_type: str = "72x72", twemoji_cdn: Optional[str] = None, **kwargs: Any) -> Dict[str, Any]:
@@ -155,6 +167,8 @@ def _to_code_point(unicode_surrogates: str, sep: str = "-") -> str:
 
     https://github.com/streamlit/streamlit/blob/develop/frontend/lib/src/vendor/twemoji.ts#L7-L24
 
+    https://unpkg.com/twemoji@14.0.2/dist/twemoji.min.js
+
     Parameters
     ----------
     unicode_surrogates : str
diff --git a/test/test_parser.py b/test/test_parser.py
index 76534fe..4298c54 100644
--- a/test/test_parser.py
+++ b/test/test_parser.py
@@ -1,17 +1,38 @@
+import random
+import re
+
 from emoji import EMOJI_DATA, LANGUAGES
 from tqdm.auto import tqdm
 
-from sphinx_emoji_favicon import _str2emoji, create_emoji_favicon_meta
+from sphinx_emoji_favicon import _defalut_twemoji_latest_version, _str2emoji, _url_is_reachable, create_emoji_favicon_meta
 
 
 def test_create_emoji_favicon_meta():
+    check_link_probability = 0.01
     for emoji_unicode, emoji_data in tqdm(EMOJI_DATA.items(), total=len(EMOJI_DATA)):
+        if "status" in emoji_data and emoji_data["status"] > 2:
+            continue
+        if "E" in emoji_data and str(emoji_data["E"]) > _defalut_twemoji_latest_version:
+            continue
+        if len(emoji_unicode) > 2:
+            continue
         emoji_favicon_meta = create_emoji_favicon_meta(emoji_unicode)
         for lang in LANGUAGES:
             if lang not in emoji_data:
                 continue
             emoji_str = emoji_data[lang]
-            assert create_emoji_favicon_meta(emoji_str, lang) == emoji_favicon_meta
+            new_emoji_favicon_meta = create_emoji_favicon_meta(emoji_str, lang)
+            assert new_emoji_favicon_meta == emoji_favicon_meta
+            if random.random() <= check_link_probability:
+                link = re.search(r'href="([^"]+)"', emoji_favicon_meta).group(1)
+                # assert _url_is_reachable(link)
+                # some of the emoji from the latest versions are not yet available in Twemoji
+                # so we DO NOT assert that the link is reachable
+                if not _url_is_reachable(link):
+                    print(emoji_unicode)
+                    print(emoji_str)
+                    print("status:", emoji_data["status"])
+                    print("version:", emoji_data["E"])
         for emoji_alias in emoji_data.get("alias", []):
             if emoji_alias in _str2emoji:
                 continue