diff --git a/public/images/staff/ceyhun_kaplan.png b/public/images/staff/ceyhun_kaplan.png
index 70ad0dc..b10678a 100644
Binary files a/public/images/staff/ceyhun_kaplan.png and b/public/images/staff/ceyhun_kaplan.png differ
diff --git a/public/images/staff/thomas_klein.jpeg b/public/images/staff/thomas_klein.jpeg
deleted file mode 100644
index 1b0d0b6..0000000
Binary files a/public/images/staff/thomas_klein.jpeg and /dev/null differ
diff --git a/public/images/staff/thomas_klein.png b/public/images/staff/thomas_klein.png
new file mode 100644
index 0000000..dda014a
Binary files /dev/null and b/public/images/staff/thomas_klein.png differ
diff --git a/public/locales/fr/contributors.json b/public/locales/fr/contributors.json
index 8fd9333..215d04a 100644
--- a/public/locales/fr/contributors.json
+++ b/public/locales/fr/contributors.json
@@ -32,7 +32,7 @@
       "companyUrl": "https://opengento.fr/",
       "linkedin": "https://www.linkedin.com/in/thomas-klein/",
       "role": "Développeur",
-      "photo": "/images/staff/thomas_klein.jpeg",
+      "photo": "/images/staff/thomas_klein.png",
       "photoBg": 3,
       "biography": ""
     }
diff --git a/public/locales/fr/staff.json b/public/locales/fr/staff.json
index 6dfb929..9bdca21 100644
--- a/public/locales/fr/staff.json
+++ b/public/locales/fr/staff.json
@@ -76,7 +76,7 @@
       "companyUrl": "https://opengento.fr/",
       "linkedin": "https://www.linkedin.com/in/thomas-klein/",
       "role": "Secrétaire",
-      "photo": "/images/staff/thomas_klein.jpeg",
+      "photo": "/images/staff/thomas_klein.png",
       "photoBg": 3,
       "biography": ""
     },