diff --git a/_includes/comments.html b/_includes/comments.html
index 352383df..2e94c1d4 100644
--- a/_includes/comments.html
+++ b/_includes/comments.html
@@ -1,6 +1,6 @@
 <div class="page__comments">
   <center><h2>Comments by <a href="https://staticman.net/">Staticman</a> and <a href="https://identosphere.net">Identosphere</a></h2>
-  <p><a href="https://identosphere.net"><img src="/images/team-identosphere.png" alt="Team Identosphere" /></a></p>
+  <p><a href="https://identosphere.net"><img src="/images/team-identosphere.webp" alt="Team Identosphere" /></a></p>
   <p>Subscribe to our newsletter for weekly updates in Decentralized ID.<br>You can even <a href="https://identosphere.substack.com/"><b>read it first</b></a> before inviting us to your inbox.<br>
   <iframe src="https://identosphere.substack.com/embed" width="400" height="267" style="border:1px solid #EEE; background:#f0f0f0;" frameborder="0" scrolling="no"></iframe></p></center>
   
diff --git a/_posts/2019-03-11-identity-github.md b/_posts/2019-03-11-identity-github.md
index 0f865869..ec8a2156 100644
--- a/_posts/2019-03-11-identity-github.md
+++ b/_posts/2019-03-11-identity-github.md
@@ -14,7 +14,7 @@ redirect_from:
 toc_sticky: false
 header:
   image: /images/github.webp
-  og_image:/images/github.webp
+  og_image: /images/github.webp
   teaser: /images/github_teaser.webp
 categories: ["Code","Web Standards"]
 tags: ["W3C","ID2020","Danube Tech","XDI","OASIS","Digital Bazaar","Rebooting WoT","JSON-LD","Credentials Community Group","RDF","Veres One","Learning Machine","BTCR","Danube Tech","Jolocom","Blockcerts"]
diff --git a/_posts/history/2020-01-01-user-centric-2000s.md b/_posts/history/2020-01-01-user-centric-2000s.md
index 8845fd2f..e613cea8 100644
--- a/_posts/history/2020-01-01-user-centric-2000s.md
+++ b/_posts/history/2020-01-01-user-centric-2000s.md
@@ -181,7 +181,7 @@ Since then, the IIW has met bi-anually, actively supporting the development of t
   > 5. We help implement cost effective online and print documentation from the event.
 * [ALL Book of Proceedings PDFs](https://iiw.idcommons.net/ALL_Book_of_Proceedings_PDFs)
 
-[![https://upload.wikimedia.org/wikipedia/commons/c/ce/JakeFeinlerAtIIW2006.jpg]({{ site.baseurl }}/images/JakeFeinlerAtIIW2006.jpg)](https://en.wikipedia.org/wiki/File:JakeFeinlerAtIIW2006.webp)
+[![https://upload.wikimedia.org/wikipedia/commons/c/ce/JakeFeinlerAtIIW2006.jpg]({{ site.baseurl }}/images/JakeFeinlerAtIIW2006.webp)](https://en.wikipedia.org/wiki/File:JakeFeinlerAtIIW2006.jpg)
 
 ## Openid