diff --git a/app/routes/apps.py b/app/routes/apps.py
index 0598933..50707e4 100644
--- a/app/routes/apps.py
+++ b/app/routes/apps.py
@@ -41,22 +41,22 @@ def index():
 
         memory_options = ""
         for value, label in [
-            ("", "Default"),
-            ("256m", "256 MB - small service"),
-            ("512m", "512 MB - normal service"),
-            ("1g", "1 GB - larger service"),
-            ("2g", "2 GB - heavy service"),
+            ("", "Výchozí"),
+            ("256m", "256 MB - malá služba"),
+            ("512m", "512 MB - běžná služba"),
+            ("1g", "1 GB - větší služba"),
+            ("2g", "2 GB - náročná služba"),
         ]:
             selected = "selected" if memory == value else ""
             memory_options += f'<option value="{value}" {selected}>{label}</option>'
 
         cpu_options = ""
         for value, label in [
-            ("", "Default"),
-            ("0.25", "0.25 CPU - very small"),
-            ("0.50", "0.50 CPU - normal"),
-            ("1.00", "1 CPU - full core"),
-            ("2.00", "2 CPU - heavy"),
+            ("", "Výchozí"),
+            ("0.25", "0,25 CPU - velmi malá služba"),
+            ("0.50", "0,50 CPU - běžná služba"),
+            ("1.00", "1 CPU - celé jádro"),
+            ("2.00", "2 CPU - náročná služba"),
         ]:
             selected = "selected" if cpus == value else ""
             cpu_options += f'<option value="{value}" {selected}>{label}</option>'
@@ -75,68 +75,68 @@ def index():
                     <div class="inline-form">
                         <select name="memory">{memory_options}</select>
                         <select name="cpus">{cpu_options}</select>
-                        <button type="submit">Apply</button>
+                        <button type="submit">Použít</button>
                     </div>
                     <div class="resource-help">
-                        Memory is RAM limit. CPU is max compute share.
-                        Example: 0.50 = half CPU core, 1.00 = one full core.
+                        Paměť je limit RAM. CPU určuje maximální podíl výpočetního výkonu.
+                        Příklad: 0,50 = polovina jádra, 1,00 = celé jádro.
                     </div>
                 </form>
             </td>
             <td>
                 <details>
-                    <summary>Clone commands</summary>
+                    <summary>Příkazy pro klonování</summary>
                     <label class="muted">HTTP</label>
                     <div class="cmd-row">
                         <input readonly value="{http_clone}" id="http-{app_id}">
-                        <button onclick="copyValue('http-{app_id}')">Copy</button>
+                        <button onclick="copyValue('http-{app_id}')">Kopírovat</button>
                     </div>
 
                     <label class="muted">SSH</label>
                     <div class="cmd-row">
                         <input readonly value="{ssh_clone}" id="ssh-{app_id}">
-                        <button onclick="copyValue('ssh-{app_id}')">Copy</button>
+                        <button onclick="copyValue('ssh-{app_id}')">Kopírovat</button>
                     </div>
                 </details>
             </td>
             <td>
-                <form method="post" action="/portal/delete-app" onsubmit="return confirm('Delete {app_id}? This removes container, image, workspace, catalog entry and Gitea repo.');">
+                <form method="post" action="/portal/delete-app" onsubmit="return confirm('Smazat {app_id}? Tím se odstraní kontejner, image, workspace, záznam v katalogu a Gitea repozitář.');">
                     <input type="hidden" name="app_id" value="{app_id}">
-                    <button type="submit" class="danger">Delete</button>
+                    <button type="submit" class="danger">Smazat</button>
                 </form>
             </td>
         </tr>
         """
 
     if not rows:
-        rows = '<tr><td colspan="6">No apps deployed yet.</td></tr>'
+        rows = '<tr><td colspan="6">Zatím nejsou nasazené žádné aplikace.</td></tr>'
 
     return page(
-        "Apps",
+        "Aplikace",
         f"""
         <div class="grid">
             <div class="card">
-                <h2>Apps</h2>
-                <p class="muted">Create, deploy, clone, tune resources and delete services.</p>
-                <a class="btn" href="/portal/new-app">+ New App</a>
+                <h2>Aplikace</h2>
+                <p class="muted">Vytváření, nasazení, klonování, nastavení prostředků a mazání služeb.</p>
+                <a class="btn" href="/portal/new-app">+ Nová aplikace</a>
             </div>
             <div class="card">
-                <h2>Backups</h2>
-                <p class="muted">Create backups and copy restore commands. Restore is intentionally manual and guarded.</p>
-                <a class="btn" href="/portal/backups">Manage Backups</a>
+                <h2>Zálohy</h2>
+                <p class="muted">Vytváření záloh a kopírování příkazů pro obnovu. Obnova je záměrně ruční a chráněná.</p>
+                <a class="btn" href="/portal/backups">Spravovat zálohy</a>
             </div>
         </div>
 
         <div class="card">
-            <h2>Deployed Apps</h2>
+            <h2>Nasazené aplikace</h2>
             <table>
                 <tr>
-                    <th>App</th>
+                    <th>Aplikace</th>
                     <th>Status</th>
-                    <th>Docs</th>
-                    <th>Resources</th>
+                    <th>Dokumentace</th>
+                    <th>Prostředky</th>
                     <th>Git</th>
-                    <th>Actions</th>
+                    <th>Akce</th>
                 </tr>
                 {rows}
             </table>
@@ -148,34 +148,34 @@ def index():
 @router.get("/new-app", response_class=HTMLResponse)
 def new_app_form():
     return page(
-        "New App",
+        "Nová aplikace",
         """
         <div class="card">
-            <h2>Create New App</h2>
-            <p class="muted">This creates Gitea repo, webhook, local workspace, initial commit and deploys the service.</p>
+            <h2>Vytvořit novou aplikaci</h2>
+            <p class="muted">Vytvoří Gitea repozitář, webhook, lokální workspace, první commit a nasadí službu.</p>
 
             <form method="post" action="/portal/new-app">
                 <p>
-                    <label>App ID</label><br>
+                    <label>ID aplikace</label><br>
                     <input name="app_id" placeholder="gmail-service" required>
                 </p>
 
                 <p>
-                    <label>App Name</label><br>
-                    <input name="app_name" placeholder="Gmail Service" required>
+                    <label>Název aplikace</label><br>
+                    <input name="app_name" placeholder="Gmail služba" required>
                 </p>
 
                 <p>
-                    <label>Template</label><br>
+                    <label>Šablona</label><br>
                     <select name="template">
                         <option value="python-fastapi">Python FastAPI</option>
                     </select>
                 </p>
 
-                <button type="submit">Create App</button>
+                <button type="submit">Vytvořit aplikaci</button>
             </form>
 
-            <p><a href="/portal">&larr; Back</a></p>
+            <p><a href="/portal">&larr; Zpět</a></p>
         </div>
         """,
     )
@@ -184,7 +184,7 @@ def new_app_form():
 @router.post("/new-app", response_class=HTMLResponse)
 def create_app(app_id: str = Form(...), app_name: str = Form(...), template: str = Form(...)):
     if template != "python-fastapi":
-        return HTMLResponse("Unsupported template", status_code=400)
+        return HTMLResponse("Nepodporovaná šablona", status_code=400)
 
     create_result = run_command([NEW_APP_SCRIPT, app_id, app_name])
     deploy_result = run_command([DEPLOY_SCRIPT, app_id])
@@ -192,16 +192,16 @@ def create_app(app_id: str = Form(...), app_name: str = Form(...), template: str
     status = "OK" if create_result.returncode == 0 and deploy_result.returncode == 0 else "FAILED"
 
     return render_result(
-        title=f"Create App: {status}",
+        title=f"Vytvoření aplikace: {status}",
         back_url="/portal",
         sections=[
-            ("Create Output", create_result.stdout),
-            ("Create Error", create_result.stderr),
-            ("Deploy Output", deploy_result.stdout),
-            ("Deploy Error", deploy_result.stderr),
+            ("Výstup vytvoření", create_result.stdout),
+            ("Chyba vytvoření", create_result.stderr),
+            ("Výstup nasazení", deploy_result.stdout),
+            ("Chyba nasazení", deploy_result.stderr),
         ],
         extra_link=f"/apps/{html.escape(app_id)}/docs",
-        extra_label="Open Swagger",
+        extra_label="Otevřít Swagger",
     )
 
 
@@ -211,9 +211,9 @@ def delete_app(app_id: str = Form(...)):
     status = "OK" if result.returncode == 0 else "FAILED"
 
     return render_result(
-        title=f"Delete App: {status}",
+        title=f"Smazání aplikace: {status}",
         back_url="/portal",
-        sections=[("Output", result.stdout), ("Error", result.stderr)],
+        sections=[("Výstup", result.stdout), ("Chyba", result.stderr)],
     )
 
 
@@ -244,12 +244,12 @@ def update_resources(app_id: str = Form(...), memory: str = Form(""), cpus: str
     status = "OK" if compose_result.returncode == 0 and deploy_result.returncode == 0 else "FAILED"
 
     return render_result(
-        title=f"Update Resources: {status}",
+        title=f"Úprava prostředků: {status}",
         back_url="/portal",
         sections=[
-            ("Compose Output", compose_result.stdout),
-            ("Compose Error", compose_result.stderr),
-            ("Deploy Output", deploy_result.stdout),
-            ("Deploy Error", deploy_result.stderr),
+            ("Výstup compose", compose_result.stdout),
+            ("Chyba compose", compose_result.stderr),
+            ("Výstup nasazení", deploy_result.stdout),
+            ("Chyba nasazení", deploy_result.stderr),
         ],
     )
diff --git a/app/routes/backups.py b/app/routes/backups.py
index b3d5b4f..5c19111 100644
--- a/app/routes/backups.py
+++ b/app/routes/backups.py
@@ -35,52 +35,52 @@ def backups_page():
             <td>
                 <div class="copy-row">
                     <input readonly value="{backup_path}">
-                    <button type="button" class="copy-button" data-copy-value="{backup_path}" onclick="copyText(this)">Copy</button>
+                    <button type="button" class="copy-button" data-copy-value="{backup_path}" onclick="copyText(this)">Kopírovat</button>
                 </div>
             </td>
             <td>
                 <div class="copy-row">
                     <input readonly value="{restore_cmd}">
-                    <button type="button" class="copy-button" data-copy-value="{restore_cmd}" onclick="copyText(this)">Copy</button>
+                    <button type="button" class="copy-button" data-copy-value="{restore_cmd}" onclick="copyText(this)">Kopírovat</button>
                 </div>
-                <div class="muted">Restore is dangerous and must be run manually over SSH.</div>
+                <div class="muted">Obnova je nebezpečná a musí se spustit ručně přes SSH.</div>
             </td>
             <td class="actions-cell">
-                <form method="post" action="/portal/backups/delete" onsubmit="return confirm('Delete backup {backup_name}?');">
+                <form method="post" action="/portal/backups/delete" onsubmit="return confirm('Smazat zálohu {backup_name}?');">
                     <input type="hidden" name="backup_path" value="{backup_path}">
-                    <button type="submit" class="danger">Delete</button>
+                    <button type="submit" class="danger">Smazat</button>
                 </form>
             </td>
         </tr>
         """
 
     if not rows:
-        rows = '<tr><td colspan="4">No backups found.</td></tr>'
+        rows = '<tr><td colspan="4">Nebyly nalezeny žádné zálohy.</td></tr>'
 
     return page(
-        "Backups",
+        "Zálohy",
         f"""
         <div class="card">
-            <h2>Backup Management</h2>
+            <h2>Správa záloh</h2>
             <p class="muted">
-                Backups do not include the backup directory itself.
-                Restoring an older backup should not delete newer .tar.gz files.
-                Restore remains manual to avoid accidental overwrite.
+                Zálohy neobsahují samotný adresář se zálohami.
+                Obnova starší zálohy by neměla smazat novější soubory .tar.gz.
+                Obnova zůstává ruční, aby nedošlo k nechtěnému přepsání dat.
             </p>
 
             <form method="post" action="/portal/backups/create">
-                <button type="submit">Create Backup</button>
+                <button type="submit">Vytvořit zálohu</button>
             </form>
         </div>
 
         <div class="card">
-            <h2>Available Backups</h2>
+            <h2>Dostupné zálohy</h2>
             <table>
                 <tr>
-                    <th>Backup</th>
-                    <th>Path</th>
-                    <th>Restore Command</th>
-                    <th>Actions</th>
+                    <th>Záloha</th>
+                    <th>Cesta</th>
+                    <th>Příkaz pro obnovu</th>
+                    <th>Akce</th>
                 </tr>
                 {rows}
             </table>
@@ -95,9 +95,9 @@ def create_backup():
     status = "OK" if result.returncode == 0 else "FAILED"
 
     return render_result(
-        title=f"Create Backup: {status}",
+        title=f"Vytvoření zálohy: {status}",
         back_url="/portal/backups",
-        sections=[("Output", result.stdout), ("Error", result.stderr)],
+        sections=[("Výstup", result.stdout), ("Chyba", result.stderr)],
     )
 
 
@@ -106,7 +106,7 @@ def delete_backup(backup_path: str = Form(...)):
     target = Path(backup_path)
 
     if not is_backup_path(target):
-        return HTMLResponse("Invalid backup path", status_code=400)
+        return HTMLResponse("Neplatná cesta k záloze", status_code=400)
 
     target = target.resolve()
     if target.exists():
diff --git a/app/static/portal.js b/app/static/portal.js
index 58fd50e..a48eab2 100644
--- a/app/static/portal.js
+++ b/app/static/portal.js
@@ -10,7 +10,7 @@ function copyText(button) {
     navigator.clipboard.writeText(value);
 
     const label = button.textContent;
-    button.textContent = "Copied";
+    button.textContent = "Zkopírováno";
     window.setTimeout(() => {
         button.textContent = label;
     }, 1200);
diff --git a/app/templates/layout.py b/app/templates/layout.py
index ff0c990..3c5f62c 100644
--- a/app/templates/layout.py
+++ b/app/templates/layout.py
@@ -18,9 +18,9 @@ def page(title: str, body: str) -> str:
                 <span>AppFactory</span>
             </a>
             <nav>
-                <a href="/portal">Apps</a>
-                <a href="/portal/new-app">New App</a>
-                <a href="/portal/backups">Backups</a>
+                <a href="/portal">Aplikace</a>
+                <a href="/portal/new-app">Nová aplikace</a>
+                <a href="/portal/backups">Zálohy</a>
             </nav>
         </header>
         <main>
@@ -50,7 +50,7 @@ def render_result(title, back_url, sections, extra_link=None, extra_label=None):
         <div class="card">
             <h2>{html.escape(title)}</h2>
             {extra}
-            <p><a href="{back_url}">&larr; Back</a></p>
+            <p><a href="{back_url}">&larr; Zpět</a></p>
         </div>
         <div class="card">
             {rendered_sections}