diff --git a/web/src/pages/SignIn.tsx b/web/src/pages/SignIn.tsx
index da84a775..43aa5616 100644
--- a/web/src/pages/SignIn.tsx
+++ b/web/src/pages/SignIn.tsx
@@ -128,6 +128,9 @@ const SignIn = () => {
                   readOnly={actionBtnLoadingState.isLoading}
                   placeholder={t("common.username")}
                   value={username}
+                  autoComplete="username"
+                  autoCapitalize="off"
+                  spellCheck={false}
                   onChange={handleUsernameInputChanged}
                   required
                 />
@@ -141,6 +144,9 @@ const SignIn = () => {
                   readOnly={actionBtnLoadingState.isLoading}
                   placeholder={t("common.password")}
                   value={password}
+                  autoComplete="password"
+                  autoCapitalize="off"
+                  spellCheck={false}
                   onChange={handlePasswordInputChanged}
                   required
                 />
diff --git a/web/src/pages/SignUp.tsx b/web/src/pages/SignUp.tsx
index a3341a2c..92102aac 100644
--- a/web/src/pages/SignUp.tsx
+++ b/web/src/pages/SignUp.tsx
@@ -93,6 +93,9 @@ const SignUp = () => {
                     readOnly={actionBtnLoadingState.isLoading}
                     placeholder={t("common.username")}
                     value={username}
+                    autoComplete="username"
+                    autoCapitalize="off"
+                    spellCheck={false}
                     onChange={handleUsernameInputChanged}
                     required
                   />
@@ -106,6 +109,9 @@ const SignUp = () => {
                     readOnly={actionBtnLoadingState.isLoading}
                     placeholder={t("common.password")}
                     value={password}
+                    autoComplete="password"
+                    autoCapitalize="off"
+                    spellCheck={false}
                     onChange={handlePasswordInputChanged}
                     required
                   />