diff --git a/common.php b/common.php
index 769e413..224ca39 100644
--- a/common.php
+++ b/common.php
@@ -1297,6 +1297,169 @@ function qdb_import_questionnaire_bundle(PDO $pdo, array $item, bool $replaceIfE
     ];
 }
 
+/** One translation row for a portable translations JSON bundle. */
+function qdb_translation_entry_to_bundle_row(array $e, ?string $questionnaireID = null, ?string $questionnaireName = null): array {
+    $tr = $e['translations'] ?? [];
+    if ($tr instanceof stdClass) {
+        $tr = (array)$tr;
+    }
+    if (is_array($tr) && isset($tr[0]) && is_array($tr[0]) && isset($tr[0]['languageCode'])) {
+        $tr = qdb_translation_rows_to_map($tr);
+    }
+    $row = [
+        'type'         => $e['type'],
+        'entityId'     => $e['entityId'],
+        'key'          => $e['key'] ?? '',
+        'translations' => is_array($tr) ? $tr : [],
+    ];
+    if (!empty($e['displayKey'])) {
+        $row['displayKey'] = $e['displayKey'];
+    }
+    if ($questionnaireID !== null && $questionnaireID !== '') {
+        $row['questionnaireID'] = $questionnaireID;
+    }
+    if ($questionnaireName !== null && $questionnaireName !== '') {
+        $row['questionnaireName'] = $questionnaireName;
+    }
+    return $row;
+}
+
+/** @return array<string, string> */
+function qdb_normalize_bundle_translations($raw): array {
+    if (!is_array($raw)) {
+        return [];
+    }
+    if (isset($raw[0]) && is_array($raw[0]) && isset($raw[0]['languageCode'])) {
+        return qdb_translation_rows_to_map($raw);
+    }
+    $map = [];
+    foreach ($raw as $lang => $text) {
+        if (is_string($lang) && $lang !== '') {
+            $map[$lang] = (string)$text;
+        }
+    }
+    return $map;
+}
+
+function qdb_translation_entity_exists(PDO $pdo, string $type, string $entityId): bool {
+    if ($type === 'string' || $type === 'app_string') {
+        return true;
+    }
+    if ($type === 'question') {
+        $stmt = $pdo->prepare('SELECT 1 FROM question WHERE questionID = :id LIMIT 1');
+    } elseif ($type === 'answer_option') {
+        $stmt = $pdo->prepare('SELECT 1 FROM answer_option WHERE answerOptionID = :id LIMIT 1');
+    } else {
+        return false;
+    }
+    $stmt->execute([':id' => $entityId]);
+    return (bool)$stmt->fetchColumn();
+}
+
+/** Export all translations (languages + flat entries) as portable JSON. */
+function qdb_export_translations_bundle(PDO $pdo): array {
+    $languages = $pdo->query('SELECT languageCode, name FROM language ORDER BY languageCode')
+        ->fetchAll(PDO::FETCH_ASSOC);
+    if (!array_filter($languages, fn($l) => $l['languageCode'] === QDB_SOURCE_LANGUAGE)) {
+        array_unshift($languages, ['languageCode' => QDB_SOURCE_LANGUAGE, 'name' => 'German']);
+    }
+    qdb_ensure_source_language($pdo);
+
+    $exportEntries = [];
+    $appEntries = qdb_app_ui_string_entries_for_website();
+    $appTranslations = qdb_load_translations_for_entries($pdo, $appEntries);
+    qdb_attach_translation_texts($appEntries, $appTranslations);
+    foreach ($appEntries as $e) {
+        $exportEntries[] = qdb_translation_entry_to_bundle_row($e);
+    }
+
+    $qnRows = $pdo->query('SELECT questionnaireID, name FROM questionnaire ORDER BY orderIndex, name')
+        ->fetchAll(PDO::FETCH_ASSOC);
+    foreach ($qnRows as $qn) {
+        $lists = qdb_translation_entry_lists($pdo, $qn['questionnaireID']);
+        $entries = array_merge($lists['stringEntries'], $lists['contentEntries']);
+        if (!$entries) {
+            continue;
+        }
+        $translations = qdb_load_translations_for_entries($pdo, $entries);
+        qdb_attach_translation_texts($entries, $translations);
+        foreach ($entries as $e) {
+            $exportEntries[] = qdb_translation_entry_to_bundle_row(
+                $e,
+                $qn['questionnaireID'],
+                $qn['name']
+            );
+        }
+    }
+
+    return [
+        'exportVersion'  => 1,
+        'exportedAt'     => time(),
+        'sourceLanguage' => QDB_SOURCE_LANGUAGE,
+        'languageCount'  => count($languages),
+        'languages'      => $languages,
+        'entryCount'     => count($exportEntries),
+        'entries'        => $exportEntries,
+    ];
+}
+
+/** Import translations bundle (upsert languages and translation rows). */
+function qdb_import_translations_bundle(PDO $pdo, array $bundle): array {
+    $entries = $bundle['entries'] ?? null;
+    if (!is_array($entries)) {
+        json_error('MISSING_FIELDS', 'bundle.entries array is required', 400);
+    }
+
+    qdb_ensure_source_language($pdo);
+    foreach ($bundle['languages'] ?? [] as $langRow) {
+        if (!is_array($langRow)) {
+            continue;
+        }
+        $lc = trim($langRow['languageCode'] ?? '');
+        $name = trim($langRow['name'] ?? '');
+        if ($lc === '' || $lc === QDB_SOURCE_LANGUAGE) {
+            continue;
+        }
+        $pdo->prepare('INSERT INTO language (languageCode, name) VALUES (:lc, :n)
+                       ON CONFLICT(languageCode) DO UPDATE SET name = excluded.name')
+            ->execute([':lc' => $lc, ':n' => $name]);
+    }
+
+    $validTypes = ['question', 'answer_option', 'string', 'app_string'];
+    $imported = 0;
+    $skipped = 0;
+
+    foreach ($entries as $entry) {
+        if (!is_array($entry)) {
+            $skipped++;
+            continue;
+        }
+        $type = $entry['type'] ?? '';
+        $entityId = trim((string)($entry['entityId'] ?? ''));
+        if (!in_array($type, $validTypes, true) || $entityId === '') {
+            $skipped++;
+            continue;
+        }
+        if (!qdb_translation_entity_exists($pdo, $type, $entityId)) {
+            $skipped++;
+            continue;
+        }
+        $map = qdb_normalize_bundle_translations($entry['translations'] ?? []);
+        if ($map) {
+            qdb_apply_translation_map($pdo, $type, $entityId, $map);
+            $imported++;
+        } else {
+            $skipped++;
+        }
+    }
+
+    return [
+        'imported' => $imported,
+        'skipped'  => $skipped,
+        'total'    => count($entries),
+    ];
+}
+
 /** Import a full export bundle. */
 function qdb_import_questionnaires_bundle(PDO $pdo, array $bundle, bool $replaceIfExists = false): array {
     $items = $bundle['questionnaires'] ?? [];
diff --git a/handlers/translations.php b/handlers/translations.php
index 806f92c..17dc195 100644
--- a/handlers/translations.php
+++ b/handlers/translations.php
@@ -7,6 +7,19 @@ $validTypes = ['question', 'answer_option', 'string', 'app_string', 'language'];
 switch ($method) {
 
 case 'GET':
+    if (!empty($_GET['exportBundle'])) {
+        require_role(['admin', 'supervisor'], $tokenRec);
+        [$pdo, $tmpDb, $lockFp] = qdb_open(false);
+        $bundle = qdb_export_translations_bundle($pdo);
+        qdb_discard($tmpDb, $lockFp);
+
+        $filename = 'translations_bundle_' . date('Y-m-d_His') . '.json';
+        header('Content-Type: application/json; charset=UTF-8');
+        header('Content-Disposition: attachment; filename="' . $filename . '"');
+        echo json_encode($bundle, JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
+        exit;
+    }
+
     if (isset($_GET['languages'])) {
         [$pdo, $tmpDb, $lockFp] = qdb_open(false);
         $rows = $pdo->query("SELECT languageCode, name FROM language ORDER BY languageCode")->fetchAll(PDO::FETCH_ASSOC);
@@ -115,6 +128,29 @@ case 'GET':
     json_success(["translations" => $rows]);
     break;
 
+case 'POST':
+    require_role(['admin', 'supervisor'], $tokenRec);
+    $body = read_json_body();
+    if (($body['action'] ?? '') === 'importBundle') {
+        $bundle = $body['bundle'] ?? null;
+        if (!is_array($bundle)) {
+            json_error('MISSING_FIELDS', 'bundle object is required', 400);
+        }
+        [$pdo, $tmpDb, $lockFp] = qdb_open(true);
+        try {
+            $result = qdb_import_translations_bundle($pdo, $bundle);
+            qdb_save($tmpDb, $lockFp);
+            json_success($result);
+        } catch (Throwable $e) {
+            qdb_discard($tmpDb, $lockFp);
+            error_log('translations importBundle: ' . $e->getMessage());
+            json_error('SERVER_ERROR', $e->getMessage(), 500);
+        }
+        break;
+    }
+    json_error('BAD_REQUEST', 'Unknown action', 400);
+    break;
+
 case 'PUT':
     require_role(['admin', 'supervisor'], $tokenRec);
     $body = read_json_body();
diff --git a/website/js/pages/translations.js b/website/js/pages/translations.js
index 3a07330..92fb8fd 100644
--- a/website/js/pages/translations.js
+++ b/website/js/pages/translations.js
@@ -1,5 +1,5 @@
-import { apiGet, apiPut, apiDelete } from '../api.js';
-import { showToast } from '../app.js';
+import { apiGet, apiPost, apiPut, apiDelete } from '../api.js';
+import { canEdit, showToast } from '../app.js';
 import {
     SOURCE_LANG,
     normalizeEntry,
@@ -23,10 +23,20 @@ export async function translationsPage() {
     app.innerHTML = `
         <div class="page-header">
             <h1>Translations</h1>
+            <div class="actions" id="transHeaderActions"></div>
         </div>
         <div id="transPageRoot"><div class="spinner"></div></div>
     `;
 
+    if (canEdit()) {
+        document.getElementById('transHeaderActions').innerHTML = `
+            <input type="file" id="importTransBundleFile" accept=".json,application/json" hidden>
+            <button type="button" class="btn" id="importTransBundleBtn">Import translations</button>
+            <button type="button" class="btn btn-primary" id="exportTransBundleBtn">Export translations</button>
+        `;
+        bindTranslationBundleActions();
+    }
+
     try {
         renderShell();
         await loadTranslations();
@@ -387,3 +397,85 @@ function applyFilters() {
         }
     }
 }
+
+function bindTranslationBundleActions() {
+    const fileInput = document.getElementById('importTransBundleFile');
+    const importBtn = document.getElementById('importTransBundleBtn');
+    const exportBtn = document.getElementById('exportTransBundleBtn');
+    if (!fileInput || !importBtn || !exportBtn) return;
+
+    exportBtn.addEventListener('click', async () => {
+        exportBtn.disabled = true;
+        const prev = exportBtn.textContent;
+        exportBtn.textContent = 'Preparing…';
+        try {
+            const token = localStorage.getItem('qdb_token');
+            const res = await fetch('../api/translations?exportBundle=1', {
+                headers: { Authorization: `Bearer ${token}` },
+            });
+            if (!res.ok) {
+                const err = await res.json().catch(() => ({}));
+                throw new Error(err.error?.message || err.error || 'Export failed');
+            }
+            const blob = await res.blob();
+            const url = URL.createObjectURL(blob);
+            const a = document.createElement('a');
+            a.href = url;
+            const stamp = new Date().toISOString().slice(0, 10);
+            a.download = `translations_bundle_${stamp}.json`;
+            a.click();
+            URL.revokeObjectURL(url);
+            showToast('Translations bundle downloaded', 'success');
+        } catch (e) {
+            showToast(e.message, 'error');
+        } finally {
+            exportBtn.disabled = false;
+            exportBtn.textContent = prev;
+        }
+    });
+
+    importBtn.addEventListener('click', () => fileInput.click());
+
+    fileInput.addEventListener('change', async () => {
+        const file = fileInput.files?.[0];
+        fileInput.value = '';
+        if (!file) return;
+
+        let bundle;
+        try {
+            bundle = JSON.parse(await file.text());
+        } catch {
+            showToast('Invalid JSON file', 'error');
+            return;
+        }
+
+        if (!bundle?.entries || !Array.isArray(bundle.entries)) {
+            showToast('Not a translations bundle (missing entries array)', 'error');
+            return;
+        }
+
+        const count = bundle.entries.length;
+        if (!confirm(`Import translations for ${count} entries from this file?`)) return;
+
+        importBtn.disabled = true;
+        const prev = importBtn.textContent;
+        importBtn.textContent = 'Importing…';
+        try {
+            const result = await apiPost('translations.php', {
+                action: 'importBundle',
+                bundle,
+            });
+            const imported = result.imported ?? 0;
+            const skipped = result.skipped ?? 0;
+            let msg = `Imported ${imported} translation(s)`;
+            if (skipped) msg += ` (${skipped} skipped)`;
+            showToast(msg, 'success');
+            await loadTranslations();
+        } catch (e) {
+            showToast(e.message, 'error');
+        } finally {
+            importBtn.disabled = false;
+            importBtn.textContent = prev;
+        }
+    });
+}