# Non-interactive usage example
php artisan bookstack:create-admin --email="barry@example.com" --name="Bazza" --password="hunter2"
+
+# Defining "External Authentication ID" instead of password for LDAP/SAML2/OIDC environments
+php artisan bookstack:create-admin --email="barry.booker@example.com" --name="Bazza" --external-auth-id="bbooker"
```
#### Copy Shelf Permission
+++
title = "PDF Rendering"
-description = "Using WKHTMLtoPDF to generate PDF's for better rendering"
+description = "Options to configure PDF rendering within BookStack"
date = "2017-01-22"
type = "admin-doc"
+++
```bash
ALLOW_UNTRUSTED_SERVER_FETCHING=true
```
+
+### Export Page Size
+
+By default PDF exports are generated at an A4 size. If you'd prefer exports to be generated at "US Letter" standard sizes
+you can specify this within your `.env` like so:
+
+```bash
+# US Letter
+EXPORT_PAGE_SIZE=letter
+```
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