optimize photos

Author: shurph

assets/images/andrei_sviridov.jpg

@@ -74,31 +74,31 @@ <h3>
                 <h2>Meetup Keepers</h2>
                 <div class="three-in-row">
                     <div>
-                        <img src="assets/images/mikalai_saskavets.webp">
+                        <img src="assets/images/mikalai_saskavets.jpg">
                         <span class="keeper-name">Mikalai Saskavets</span>
                         <span class="keeper-role">programm committee member, event moderator</span>
                         <span class="keeper-contacts">
                             <a class="ico-telegram" href="https://t.me/nikolay_mikalai_saskovets_shurph" title="telegram">@nikolay_mikalai_saskovets_shurph</a>
                         </span>
                     </div>
                     <div>
-                        <img src="assets/images/sergey_khaletskiy.png">
+                        <img src="assets/images/sergey_khaletskiy.jpg">
                         <span class="keeper-name">Sergey Khaletskiy​</span>
                         <span class="keeper-role">programm committee member, event moderator</span>
                         <span class="keeper-contacts">
                             <a class="ico-telegram" href="https://t.me/TheMJi9i" title="telegram">@TheMJi9i</a>
                         </span>
                     </div>
                     <div>
-                        <img src="assets/images/andrei_sviridov.png">
+                        <img src="assets/images/andrei_sviridov.jpg">
                         <span class="keeper-name">Andrei Sviridov</span>
                         <span class="keeper-role">programm committee member, event moderator</span>
                         <span class="keeper-contacts">
                             <a class="ico-telegram" href="https://t.me/andersmach" title="telegram">@andersmach</a>
                         </span>
                     </div>
                     <div>
-                        <img src="assets/images/tatsiana_tsygan.jpg">
+                        <img src="assets/images/tatsiana_tsygan_opt.jpg">
                         <span class="keeper-name">Tatsiana Tsygan</span>
                         <span class="keeper-role">
                             <span>main contact person</span>