diff --git a/edmond/plugins/shrlok.py b/edmond/plugins/shrlok.py
index c4a6c31..7c5f3a4 100644
--- a/edmond/plugins/shrlok.py
+++ b/edmond/plugins/shrlok.py
@@ -44,7 +44,7 @@ class ShrlokPlugin(Plugin):
         return url
 
     def post_text(self, text):
-        self.post("txt", text.encode())
+        return self.post("txt", text.encode())
 
     def post_html(self, html):
-        self.post("html", html.encode())
+        return self.post("html", html.encode())
diff --git a/edmond/plugins/taxref.py b/edmond/plugins/taxref.py
index 6a7de42..053a8c6 100644
--- a/edmond/plugins/taxref.py
+++ b/edmond/plugins/taxref.py
@@ -1,5 +1,6 @@
 import random
 import urllib.parse
+from typing import Optional
 
 import requests
 
@@ -9,7 +10,10 @@ BASE_URL = "https://taxref.mnhn.fr/api"
 IMG_FETCH_HTML = """\
 <!doctype html>
 <html>
-  <head><meta charset="UTF-8"/></head>
+  <head>
+    <meta charset="UTF-8"/>
+    <style>img {{ display: block; max-width: 95%; }}</style>
+  </head>
   <body></body>
   <script>
     const urls = [{}];
@@ -52,7 +56,7 @@ class TaxrefPlugin(Plugin):
             self.find_scientific_name(self.command.content, event.target)
         return True
 
-    def search_by_name(self, name, target):
+    def search_by_name(self, name: str, target: str) -> None:
         """Get species data from a scientific name.
 
         Try to disambiguate the results by focusing on species only and their
@@ -116,7 +120,7 @@ class TaxrefPlugin(Plugin):
         if images_reply := self.get_images_reply(item_to_use):
             self.bot.say(target, images_reply)
 
-    def get_ambiguous_reply(self, items):
+    def get_ambiguous_reply(self, items) -> str:
         """Show a reply with potential species."""
         reply = self.config["ambiguous_reply"]
         append = ""
@@ -128,7 +132,7 @@ class TaxrefPlugin(Plugin):
             reply += append
         return reply
 
-    def get_images_reply(self, item):
+    def get_images_reply(self, item) -> Optional[str]:
         """If there are media available, return one in a message.
 
         If shrlok is available, return a link to an HTML page shared by shrlok.
@@ -145,16 +149,19 @@ class TaxrefPlugin(Plugin):
         """
         m_url = item.get("_links", {}).get("media", {}).get("href")
         if not m_url:
+            self.bot.log_d("No media links.")
             return None
         response = requests.get(m_url)
-        if response.status_code != 200:
+        if (code := response.status_code) != 200:
+            self.bot.log_d(f"Failed to reach media link ({code}).")
             return None
         media_data = response.json()
         items = media_data.get("_embedded", {}).get("media", [])
         if not items:
+            self.bot.log_d("No media found in response.")
             return None
 
-        def get_img_url(item):
+        def get_img_url(item) -> Optional[str]:
             return item.get("_links", {}).get("file", {}).get("href")
 
         if shrlok := self.bot.get_plugin("shrlok"):
@@ -163,14 +170,19 @@ class TaxrefPlugin(Plugin):
             urls = map(get_img_url, items)
             urls_text = ",".join(map(lambda url: f'"{url}"', urls))
             html = IMG_FETCH_HTML.format(urls_text)
-            link = shrlok.post_html(html)
+            link = shrlok.post_html(html)  # type: ignore
+            if not link:
+                self.bot.log_d("shrlok plugin returned an empty string.")
         else:
             link = get_img_url(random.choice(items))
+            if not link:
+                self.bot.log_d("No link found.")
 
         if link:
             return "📷 " + link
+        return None
 
-    def find_scientific_name(self, name, target):
+    def find_scientific_name(self, name: str, target: str):
         """Find a corresponding scientific name for a vernacular name."""
         name = name.lower()
         enc_name = urllib.parse.quote(name)
@@ -207,7 +219,7 @@ class TaxrefPlugin(Plugin):
                     )
                     + "\n"
                 )
-                reply = shrlok.post_text(text)
+                reply = shrlok.post_text(text)  # type: ignore
             else:
                 reply = self.get_ambiguous_reply(items)
 
