diff --git a/views/pages/groups.go b/views/pages/groups.go
index dbe4260..7554467 100644
--- a/views/pages/groups.go
+++ b/views/pages/groups.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"strconv"
+	"strings"
 
 	"github.com/ordinary-dev/phoenix/database"
 )
@@ -11,7 +12,7 @@ import (
 func CreateGroup(w http.ResponseWriter, r *http.Request) {
 	// Save new group to the database.
 	group := database.Group{
-		Name: r.FormValue("groupName"),
+		Name: strings.TrimSpace(r.FormValue("groupName")),
 	}
 
 	if err := database.CreateGroup(&group); err != nil {
@@ -30,7 +31,8 @@ func UpdateGroup(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if err := database.UpdateGroup(int(id), r.FormValue("groupName")); err != nil {
+	newName := strings.TrimSpace(r.FormValue("groupName"))
+	if err := database.UpdateGroup(int(id), newName); err != nil {
 		ShowError(w, http.StatusInternalServerError, err)
 		return
 	}
diff --git a/views/pages/links.go b/views/pages/links.go
index 0a5f9c6..692f7f7 100644
--- a/views/pages/links.go
+++ b/views/pages/links.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"strconv"
+	"strings"
 
 	"github.com/ordinary-dev/phoenix/database"
 )
@@ -16,11 +17,11 @@ func CreateLink(w http.ResponseWriter, r *http.Request) {
 	}
 
 	link := database.Link{
-		Name:    r.FormValue("linkName"),
-		Href:    r.FormValue("href"),
+		Name:    strings.TrimSpace(r.FormValue("linkName")),
+		Href:    strings.TrimSpace(r.FormValue("href")),
 		GroupID: groupID,
 	}
-	icon := r.FormValue("icon")
+	icon := strings.TrimSpace(r.FormValue("icon"))
 	if icon == "" {
 		link.Icon = nil
 	} else {
@@ -48,9 +49,9 @@ func UpdateLink(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	link.Name = r.FormValue("linkName")
-	link.Href = r.FormValue("href")
-	icon := r.FormValue("icon")
+	link.Name = strings.TrimSpace(r.FormValue("linkName"))
+	link.Href = strings.TrimSpace(r.FormValue("href"))
+	icon := strings.TrimSpace(r.FormValue("icon"))
 	if icon == "" {
 		link.Icon = nil
 	} else {
diff --git a/views/pages/registration.go b/views/pages/registration.go
index 2182aea..8733a9d 100644
--- a/views/pages/registration.go
+++ b/views/pages/registration.go
@@ -3,6 +3,7 @@ package pages
 import (
 	"errors"
 	"net/http"
+	"strings"
 
 	"github.com/ordinary-dev/phoenix/database"
 	"github.com/ordinary-dev/phoenix/jwttoken"
@@ -41,8 +42,8 @@ func CreateUser(w http.ResponseWriter, r *http.Request) {
 	}
 
 	// Try to create a user.
-	username := r.FormValue("username")
-	password := r.FormValue("password")
+	username := strings.TrimSpace(r.FormValue("username"))
+	password := strings.TrimSpace(r.FormValue("password"))
 	_, err = database.CreateAdmin(username, password)
 	if err != nil {
 		ShowError(w, http.StatusInternalServerError, err)
diff --git a/views/pages/signin.go b/views/pages/signin.go
index c848bf7..b02484e 100644
--- a/views/pages/signin.go
+++ b/views/pages/signin.go
@@ -2,6 +2,7 @@ package pages
 
 import (
 	"net/http"
+	"strings"
 
 	log "github.com/sirupsen/logrus"
 
@@ -23,8 +24,8 @@ func ShowSignInForm(w http.ResponseWriter, _ *http.Request) {
 
 func AuthorizeUser(w http.ResponseWriter, r *http.Request) {
 	// Check credentials.
-	username := r.FormValue("username")
-	password := r.FormValue("password")
+	username := strings.TrimSpace(r.FormValue("username"))
+	password := strings.TrimSpace(r.FormValue("password"))
 	_, err := database.GetAdminIfPasswordMatches(username, password)
 	if err != nil {
 		ShowError(w, http.StatusUnauthorized, err)