diff --git a/src/i18n/strings/es.json b/src/i18n/strings/es.json
index 4f110e4b2b..0569c90275 100644
--- a/src/i18n/strings/es.json
+++ b/src/i18n/strings/es.json
@@ -28,5 +28,8 @@
     "Failed to start": "Fallo al iniciar",
     "Your Element is misconfigured": "Su Element está mal configurado",
     "Your Element configuration contains invalid JSON. Please correct the problem and reload the page.": "Su configuración de Element contiene JSON inválido. Por favor corríjalo e inténtelo de nuevo.",
-    "Download Completed": "Descarga completada"
+    "Download Completed": "Descarga completada",
+    "Open": "Abrir",
+    "Your browser can't run %(brand)s": "Su navegador es compatible con %(brand)s",
+    "%(brand)s uses advanced browser features which aren't supported by your current browser.": "%(brand)s utiliza funciones avanzadas no soportadas por su navegador."
 }
diff --git a/src/i18n/strings/eu.json b/src/i18n/strings/eu.json
index d6d46924d3..030f1138b0 100644
--- a/src/i18n/strings/eu.json
+++ b/src/i18n/strings/eu.json
@@ -4,7 +4,7 @@
     "Unknown device": "Gailu ezezaguna",
     "You need to be using HTTPS to place a screen-sharing call.": "HTTPS erabili behar duzu sekretuak partekatzeko dei bat ezartzeko.",
     "Welcome to Element": "Ongi etorri Element mezularitzara",
-    "Decentralised, encrypted chat & collaboration powered by [matrix]": "Deszentralizatutako eta zifratutako txat eta elkarlana [matrix] sareari esker",
+    "Decentralised, encrypted chat & collaboration powered by [matrix]": "Txat eta elkarlan deszentralizatua eta zifratua [matrix] sarean",
     "Sign In": "Hasi saioa",
     "Create Account": "Sortu kontua",
     "Explore rooms": "Arakatu gelak",
@@ -31,5 +31,6 @@
     "Download Completed": "Deskarga burututa",
     "Open": "Ireki",
     "Your browser can't run %(brand)s": "Zure nabigatzaileak ezin du %(brand)s exekutatu",
-    "%(brand)s uses advanced browser features which aren't supported by your current browser.": "%(brand)s-(e)k zure oraingo nabigatzaile honek euskarririk ematen ez dien ezaugarri aurreratuak erabiltzen ditu."
+    "%(brand)s uses advanced browser features which aren't supported by your current browser.": "%(brand)s-(e)k zure oraingo nabigatzaile honek euskarririk ematen ez dien ezaugarri aurreratuak erabiltzen ditu.",
+    "Powered by Matrix": "Matrixekin egina"
 }
diff --git a/src/i18n/strings/hu.json b/src/i18n/strings/hu.json
index a347616bdd..e33e527d5d 100644
--- a/src/i18n/strings/hu.json
+++ b/src/i18n/strings/hu.json
@@ -31,5 +31,6 @@
     "Your Element is misconfigured": "Az Element hibásan van beállítva",
     "Your Element configuration contains invalid JSON. Please correct the problem and reload the page.": "Az Element érvénytelen JSON-t tartalmazó konfigurációval rendelkezik. Kérlek javítsd és töltsd újra az oldalt.",
     "Your browser can't run %(brand)s": "A böngésződ nem tudja futtatni ezt: %(brand)s",
-    "%(brand)s uses advanced browser features which aren't supported by your current browser.": "%(brand)s haladó böngésző funkciókat használ amiket a jelenlegi böngésződ nem támogat."
+    "%(brand)s uses advanced browser features which aren't supported by your current browser.": "%(brand)s haladó böngésző funkciókat használ amiket a jelenlegi böngésződ nem támogat.",
+    "Powered by Matrix": "A gépházban: Matrix"
 }
diff --git a/src/i18n/strings/is.json b/src/i18n/strings/is.json
index 17f83fdbc2..7e1fc152c3 100644
--- a/src/i18n/strings/is.json
+++ b/src/i18n/strings/is.json
@@ -4,5 +4,19 @@
     "Unknown device": "Óþekkt tæki",
     "Dismiss": "Hafna",
     "You need to be using HTTPS to place a screen-sharing call.": "Þú verður að nota HTTPS til að hringja samtal með deilingu á skjá.",
-    "Decentralised, encrypted chat & collaboration powered by [matrix]": "Dulritað dreifvinnsluspjall & samstarfstól keyrt með [matrix]"
+    "Decentralised, encrypted chat & collaboration powered by [matrix]": "Dulritað dreifvinnsluspjall & samstarfstól keyrt með [matrix]",
+    "Open": "Opna",
+    "Unsupported browser": "Óstuddur vafri",
+    "Your browser can't run %(brand)s": "Vafri þinn geta ekki keyrt upp %(brand)s",
+    "Sign In": "Skrá inn",
+    "Create Account": "Stofna Reikning",
+    "Explore rooms": "Kanna herbergi",
+    "Missing indexeddb worker script!": "Að vanta indexeddb vinnumaður tölvuhandrit!",
+    "The message from the parser is: %(message)s": "Skilaboðið frá þáttaranum er %(message)s",
+    "Invalid JSON": "Ógilt JSON",
+    "Download Completed": "Niðurhalið Búið",
+    "%(appName)s (%(browserName)s, %(osName)s)": "%(appName)s (%(browserName)s, %(osName)s)",
+    "Please install <chromeLink>Chrome</chromeLink>, <firefoxLink>Firefox</firefoxLink>, or <safariLink>Safari</safariLink> for the best experience.": "vinsamlegast setja upp <chromeLink>Chrome</chromeLink>, <firefoxLink>Firefox</firefoxLink>, eða <safariLink>Safari</safariLink> fyrir besta reynsluna.",
+    "I understand the risks and wish to continue": "Ég skil áhættuna og óska að halda áfram",
+    "Go to element.io": "farðu í element.io"
 }
diff --git a/src/i18n/strings/pt_BR.json b/src/i18n/strings/pt_BR.json
index 0fdeb17fda..88c3932c9d 100644
--- a/src/i18n/strings/pt_BR.json
+++ b/src/i18n/strings/pt_BR.json
@@ -1,10 +1,10 @@
 {
     "Dismiss": "Descartar",
     "powered by Matrix": "oferecido por Matrix",
-    "Unknown device": "Dispositivo desconhecido",
+    "Unknown device": "Aparelho desconhecido",
     "You need to be using HTTPS to place a screen-sharing call.": "Você precisa estar usando HTTPS para poder iniciar uma chamada com compartilhamento de tela.",
     "Welcome to Element": "Seja bem-vinda(o) a Element",
-    "Decentralised, encrypted chat &amp; collaboration powered by [matrix]": "Chat descentralizado, criptografado e colaborativo oferecido por [matrix]",
+    "Decentralised, encrypted chat &amp; collaboration powered by [matrix]": "Chat descentralizado, criptografado e colaborativo construído com [matrix]",
     "Sign In": "Entrar",
     "Create Account": "Criar Conta",
     "Explore rooms": "Explore as salas",
@@ -18,7 +18,7 @@
     "Open user settings": "Abrir configurações do usuário",
     "%(appName)s (%(browserName)s, %(osName)s)": "%(appName)s (%(browserName)s, %(osName)s)",
     "Unsupported browser": "Navegador não suportado",
-    "Please install <chromeLink>Chrome</chromeLink>, <firefoxLink>Firefox</firefoxLink>, or <safariLink>Safari</safariLink> for the best experience.": "Instale o <chromeLink> Chrome </chromeLink>, o <firefoxLink> Firefox </firefoxLink> ou o <safariLink> Safari </safariLink> para obter uma melhor experiência.",
+    "Please install <chromeLink>Chrome</chromeLink>, <firefoxLink>Firefox</firefoxLink>, or <safariLink>Safari</safariLink> for the best experience.": "Por favor, instale o <chromeLink>Chrome</chromeLink>, o <firefoxLink>Firefox</firefoxLink> ou o <safariLink>Safari</safariLink> para obter a melhor experiência de uso.",
     "You can continue using your current browser, but some or all features may not work and the look and feel of the application may be incorrect.": "Você pode continuar usando o navegador atual, mas alguns dos recursos podem não funcionar e a aparência do aplicativo pode estar incorreta.",
     "I understand the risks and wish to continue": "Entendo os riscos e desejo continuar",
     "Go to element.io": "Vá para element.io",
@@ -26,11 +26,11 @@
     "Missing indexeddb worker script!": "O script indexeddb não foi encontrado!",
     "Open": "Abrir",
     "Previous/next recently visited room or community": "Anterior/Próxima sala ou comunidade visitada recentemente",
-    "%(brand)s Desktop (%(platformName)s)": "Desktop de %(brand) (%(platformName))",
+    "%(brand)s Desktop (%(platformName)s)": "%(brand)s Desktop (%(platformName)s)",
     "Go to your browser to complete Sign In": "Vá para o seu navegador para concluir o login",
     "Your Element is misconfigured": "Seu Element está desconfigurado",
     "Your Element configuration contains invalid JSON. Please correct the problem and reload the page.": "Sua configuração do Element contém JSON inválido. Por favor, corrija o problema e recarregue a página.",
-    "Your browser can't run %(brand)s": "Seu navegador não consegue rodar o %(brand)",
+    "Your browser can't run %(brand)s": "Seu navegador não consegue rodar %(brand)s",
     "%(brand)s uses advanced browser features which aren't supported by your current browser.": "%(brand)s usa funcionalidades avançadas de navegador que não são suportadas pelo seu navegador atual.",
-    "Powered by Matrix": "Powered by Matrix"
+    "Powered by Matrix": "Construído com tecnologia Matrix"
 }
diff --git a/src/i18n/strings/si.json b/src/i18n/strings/si.json
new file mode 100644
index 0000000000..6b6ee57ba0
--- /dev/null
+++ b/src/i18n/strings/si.json
@@ -0,0 +1,4 @@
+{
+    "Unknown device": "නොදන්නා උපකරණය",
+    "%(appName)s (%(browserName)s, %(osName)s)": "%(appName)s (%(browserName)s, %(osName)s)"
+}