diff --git a/src/App.svelte b/src/App.svelte
index b3b34dd..fee0285 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -51,6 +51,8 @@
   import LanguagePicker from './lib/components/LanguagePicker.svelte';
   import UiLanguagePicker from './lib/components/UiLanguagePicker.svelte';
   import AboutDialog from './lib/components/AboutDialog.svelte';
+  import TemplateGalleryDialog from './lib/components/TemplateGalleryDialog.svelte';
+  import type { TemplateEntry } from './lib/templates/types';
   import DocPropertiesDialog from './lib/components/DocPropertiesDialog.svelte';
   import CommentsPane from './lib/components/CommentsPane.svelte';
   import RevisionsPane from './lib/components/RevisionsPane.svelte';
@@ -184,6 +186,7 @@
   let pageDecor: PageDecor = $state(loadPageDecor());
   let lineNumbering: LineNumbering = $state(loadLineNumbering());
   let foldMarks = $state(loadFoldMarks());
+  let templateGalleryOpen = $state(false);
   let autoCorrectOpen = $state(false);
   let autoTextOpen = $state(false);
   let thesaurusOpen = $state(false);
@@ -535,13 +538,9 @@
     editor?.chain().setMeta(RECORDING, true).setContent(content).run();
   }
 
-  function handleNew() {
-    if (!editor) return;
-    if (isDocNonEmpty() && !confirm(t().dialogs.confirmNew)) return;
-    loadContent('<p></p>'); // onUpdate fires → autosave
-    documentEpoch++;
-    resetHistory();
-    // Reset everything to defaults; the $effects persist these.
+  // Reset every document side-car to its default; the $effects persist these.
+  // Shared by New and New-from-template, which then assigns the template's own values.
+  function resetDocumentState() {
     hfActive = null;
     headerDoc = null;
     footerDoc = null;
@@ -575,6 +574,37 @@
     setNoteSettings(DEFAULT_NOTE_SETTINGS);
     clearEmbeddedFonts();
     void clearEmbeddedFontStore();
+  }
+
+  function handleNew() {
+    if (!editor) return;
+    if (isDocNonEmpty() && !confirm(t().dialogs.confirmNew)) return;
+    loadContent('<p></p>'); // onUpdate fires → autosave
+    documentEpoch++;
+    resetHistory();
+    resetDocumentState();
+    editor.commands.focus();
+  }
+
+  // A built-in template: a full reset, then the template's content and side-cars —
+  // the same set an .ott import adopts. No file handle, so the first Save asks where.
+  function applyTemplate(entry: TemplateEntry) {
+    if (!editor) return;
+    if (isDocNonEmpty() && !confirm(t().dialogs.confirmNew)) return;
+    const data = entry.build();
+    loadContent(data.content);
+    documentEpoch++;
+    resetHistory();
+    resetDocumentState();
+    if (data.margins) pageMargins = { ...data.margins };
+    if (data.styles?.length) {
+      const sheet = styleSheet();
+      const paragraph = { ...sheet.paragraph };
+      for (const s of data.styles) paragraph[s.name] = s;
+      setStyleSheet({ ...sheet, paragraph });
+    }
+    foldMarks = data.foldMarks === true;
+    documentName = entry.name();
     editor.commands.focus();
   }
 
@@ -1118,6 +1148,7 @@
       {docxBusy}
       {pdfBusy}
       onNew={handleNew}
+      onNewFromTemplate={() => (templateGalleryOpen = true)}
       onOpen={handleOpen}
       onSave={handleSave}
       onSaveAs={handleSaveAs}
@@ -1193,6 +1224,14 @@
             <path d="M8 8v3.5M6.25 9.75h3.5" stroke="currentColor" stroke-width="1.3" stroke-linecap="round"/>
           </svg>
         </button>
+        <button class="file-action-btn" onclick={() => (templateGalleryOpen = true)} disabled={!editor} title={t().templates.title}>
+          <!-- Page with folded corner + text lines: new from template -->
+          <svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true">
+            <path d="M9 1.75H4.5A1.25 1.25 0 0 0 3.25 3v10A1.25 1.25 0 0 0 4.5 14.25h7A1.25 1.25 0 0 0 12.75 13V5.5L9 1.75z" stroke="currentColor" stroke-width="1.4" stroke-linejoin="round"/>
+            <path d="M9 1.75V5.5h3.75" stroke="currentColor" stroke-width="1.4" stroke-linejoin="round"/>
+            <path d="M5.5 8.5h5M5.5 10.5h5M5.5 12.5h3" stroke="currentColor" stroke-width="1.3" stroke-linecap="round"/>
+          </svg>
+        </button>
         <button class="file-action-btn" onclick={handleOpen} disabled={!editor} title={`${t().app.open} (${shortcutHint('open')})`}>
           <!-- Folder -->
           <svg width="16" height="16" viewBox="0 0 16 16" fill="none" aria-hidden="true">
@@ -1527,6 +1566,7 @@
   </footer>
 
   <AboutDialog bind:open={aboutOpen} />
+  <TemplateGalleryDialog bind:open={templateGalleryOpen} onPick={applyTemplate} />
   <AutoCorrectDialog bind:open={autoCorrectOpen} />
   <AutoTextDialog bind:open={autoTextOpen} editor={activeEditor} />
   <ThesaurusDialog bind:open={thesaurusOpen} editor={activeEditor} />
diff --git a/src/lib/components/TemplateGalleryDialog.svelte b/src/lib/components/TemplateGalleryDialog.svelte
new file mode 100644
index 0000000..6772cc6
--- /dev/null
+++ b/src/lib/components/TemplateGalleryDialog.svelte
@@ -0,0 +1,175 @@
+<script lang="ts">
+  import { t } from '../i18n/i18n.svelte';
+  import { TEMPLATES } from '../templates/registry';
+  import type { TemplateEntry } from '../templates/types';
+
+  let { open = $bindable(false), onPick }: {
+    open?: boolean;
+    onPick?: (entry: TemplateEntry) => void;
+  } = $props();
+
+  let dialogEl: HTMLDialogElement | null = $state(null);
+
+  $effect(() => {
+    const el = dialogEl;
+    if (!el) return;
+    if (open && !el.open) el.showModal();
+    else if (!open && el.open) el.close();
+  });
+
+  function onClose() {
+    open = false;
+  }
+
+  function onClick(e: MouseEvent) {
+    if (e.target === dialogEl) open = false;
+  }
+
+  function pick(entry: TemplateEntry) {
+    open = false;
+    onPick?.(entry);
+  }
+</script>
+
+<dialog class="gallery" bind:this={dialogEl} onclose={onClose} onclick={onClick} aria-label={t().templates.title}>
+  <div class="card">
+    <button class="close" onclick={() => (open = false)} aria-label={t().common.close} title={t().common.close}>
+      <svg width="14" height="14" viewBox="0 0 14 14" fill="none" aria-hidden="true">
+        <path d="M3 3l8 8M11 3l-8 8" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" />
+      </svg>
+    </button>
+    <h2>{t().templates.title}</h2>
+    <div class="grid">
+      {#each TEMPLATES as entry (entry.id)}
+        <button class="tpl" onclick={() => pick(entry)}>
+          <!-- A stylized letter page: address block, info column, body lines. -->
+          <span class="thumb" aria-hidden="true">
+            <span class="addr"></span>
+            <span class="info"></span>
+            <span class="line l1"></span>
+            <span class="line l2"></span>
+            <span class="line l3"></span>
+            <span class="fold f1"></span>
+            <span class="fold f2"></span>
+          </span>
+          <span class="name">{entry.name()}</span>
+          <span class="desc">{entry.description()}</span>
+        </button>
+      {/each}
+    </div>
+  </div>
+</dialog>
+
+<style>
+  .gallery {
+    margin: auto;
+    padding: 0;
+    border: none;
+    background: transparent;
+    max-width: none;
+    max-height: none;
+    overflow: visible;
+  }
+  .gallery::backdrop {
+    background: rgba(0, 0, 0, 0.35);
+    backdrop-filter: blur(2px);
+  }
+
+  .card {
+    position: relative;
+    width: 440px;
+    max-width: 90vw;
+    box-sizing: border-box;
+    padding: 20px 22px 22px;
+    background: var(--color-surface);
+    color: var(--color-text);
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
+    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.22);
+    font-family: var(--font-sans);
+  }
+
+  h2 {
+    margin: 0 0 14px;
+    font-size: 1rem;
+  }
+
+  .close {
+    position: absolute;
+    top: 8px;
+    right: 8px;
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 26px;
+    height: 26px;
+    padding: 0;
+    border: none;
+    border-radius: var(--radius);
+    background: transparent;
+    color: var(--color-text-muted);
+    cursor: pointer;
+  }
+  .close:hover {
+    background: var(--color-btn-hover);
+    color: var(--color-text);
+  }
+
+  .grid {
+    display: grid;
+    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
+    gap: 12px;
+  }
+
+  .tpl {
+    display: flex;
+    flex-direction: column;
+    align-items: flex-start;
+    gap: 6px;
+    padding: 10px;
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
+    background: transparent;
+    color: var(--color-text);
+    text-align: left;
+    cursor: pointer;
+    transition: border-color 0.12s, background 0.12s;
+  }
+  .tpl:hover {
+    border-color: var(--color-primary);
+    background: var(--color-btn-hover);
+  }
+
+  .thumb {
+    position: relative;
+    width: 84px;
+    height: 118px;
+    align-self: center;
+    background: #fff;
+    border: 1px solid var(--color-border);
+    border-radius: 2px;
+  }
+  .thumb > span {
+    position: absolute;
+    background: #b9c2cc;
+  }
+  .addr { top: 26px; left: 12px; width: 28px; height: 16px; }
+  .info { top: 26px; left: 52px; width: 22px; height: 16px; }
+  .line { left: 12px; height: 3px; }
+  .l1 { top: 56px; width: 40px; background: #8a94a0; }
+  .l2 { top: 66px; width: 60px; }
+  .l3 { top: 73px; width: 55px; }
+  .fold { left: 2px; width: 5px; height: 1px; background: #8a94a0; }
+  .f1 { top: 36px; }
+  .f2 { top: 80px; }
+
+  .name {
+    font-size: 0.85rem;
+    font-weight: 600;
+  }
+  .desc {
+    font-size: 0.75rem;
+    line-height: 1.4;
+    color: var(--color-text-muted);
+  }
+</style>
diff --git a/src/lib/components/ribbon/Ribbon.svelte b/src/lib/components/ribbon/Ribbon.svelte
index 28cb5af..8e911b2 100644
--- a/src/lib/components/ribbon/Ribbon.svelte
+++ b/src/lib/components/ribbon/Ribbon.svelte
@@ -68,7 +68,7 @@
     onSelectTheme,
     docxBusy = false,
     pdfBusy = false,
-    onNew, onOpen, onSave, onSaveAs, onSaveDocx, onSaveTemplate, onExportPdf, onPrintPdf, onPrint, onAbout, onDocProperties, onAutoCorrect, onAutoText, onNewComment, commentsOpen = false, onToggleComments, revisionsOpen = false, onToggleRevisions,
+    onNew, onNewFromTemplate, onOpen, onSave, onSaveAs, onSaveDocx, onSaveTemplate, onExportPdf, onPrintPdf, onPrint, onAbout, onDocProperties, onAutoCorrect, onAutoText, onNewComment, commentsOpen = false, onToggleComments, revisionsOpen = false, onToggleRevisions,
     navigatorOpen = false, onToggleNavigator,
     recentFiles = [], onOpenRecent, onForgetRecent,
   }: {
@@ -108,6 +108,7 @@
     docxBusy?: boolean;
     pdfBusy?: boolean;
     onNew?: () => void;
+    onNewFromTemplate?: () => void;
     onOpen?: () => void;
     onSave?: () => void;
     onSaveAs?: () => void;
@@ -202,6 +203,9 @@
           <button onclick={() => run(onNew)} disabled={!editor}>
             <Icon name="newDoc" size={16} />{t().app.newDocument}
           </button>
+          <button onclick={() => run(onNewFromTemplate)} disabled={!editor}>
+            <Icon name="foldMarks" size={16} />{t().templates.title}
+          </button>
           <button onclick={() => run(onOpen)} disabled={!editor}>
             <Icon name="folder" size={16} />{t().app.open}
             <span class="menu-key">{shortcutHint('open')}</span>
diff --git a/src/lib/i18n/locales/de.ts b/src/lib/i18n/locales/de.ts
index ccea8b0..850a5b3 100644
--- a/src/lib/i18n/locales/de.ts
+++ b/src/lib/i18n/locales/de.ts
@@ -674,6 +674,36 @@ const de: Messages = {
     watermarkTransparency: 'Transparenz (%)',
     clear: 'Alles entfernen',
   },
+  templates: {
+    title: 'Neu aus Vorlage',
+    din5008b: {
+      name: 'Brief nach DIN 5008',
+      description: 'Geschäftsbrief (Form B): Anschriftfeld fürs Fensterkuvert, Infoblock, Falzmarken.',
+    },
+    letter: {
+      companyName: 'Firmenname',
+      returnAddress: 'Absender · Straße · PLZ Ort',
+      recipientCompany: 'Firma',
+      recipientName: 'Vorname Name',
+      recipientStreet: 'Straße Hausnummer',
+      recipientCity: 'PLZ Ort',
+      yourRef: 'Ihr Zeichen: ',
+      yourMessage: 'Ihre Nachricht vom: ',
+      ourRef: 'Unser Zeichen: ',
+      phone: 'Telefon: ',
+      email: 'E-Mail: ',
+      dateLabel: 'Datum: ',
+      reference: 'Zeichen',
+      date: 'Datum',
+      phoneNumber: 'Nummer',
+      emailAddress: 'Adresse',
+      subject: 'Betreff',
+      salutation: 'Anrede',
+      bodyText: 'Brieftext',
+      closing: 'Mit freundlichen Grüßen',
+      signature: 'Vorname Name',
+    },
+  },
   lineNumbers: {
     title: 'Zeilennummerierung',
     off: 'Keine',
diff --git a/src/lib/i18n/locales/en.ts b/src/lib/i18n/locales/en.ts
index f3e4129..afb88be 100644
--- a/src/lib/i18n/locales/en.ts
+++ b/src/lib/i18n/locales/en.ts
@@ -680,6 +680,36 @@ const en = {
     watermarkTransparency: 'Transparency (%)',
     clear: 'Remove all',
   },
+  templates: {
+    title: 'New from template',
+    din5008b: {
+      name: 'DIN 5008 letter',
+      description: 'Business letter (Form B): address field for a window envelope, info block, fold marks.',
+    },
+    letter: {
+      companyName: 'Company name',
+      returnAddress: 'Sender · Street · Postal code City',
+      recipientCompany: 'Company',
+      recipientName: 'First name Last name',
+      recipientStreet: 'Street and number',
+      recipientCity: 'Postal code City',
+      yourRef: 'Your reference: ',
+      yourMessage: 'Your message of: ',
+      ourRef: 'Our reference: ',
+      phone: 'Phone: ',
+      email: 'Email: ',
+      dateLabel: 'Date: ',
+      reference: 'Reference',
+      date: 'Date',
+      phoneNumber: 'Number',
+      emailAddress: 'Address',
+      subject: 'Subject',
+      salutation: 'Salutation',
+      bodyText: 'Letter text',
+      closing: 'Kind regards',
+      signature: 'First name Last name',
+    },
+  },
   lineNumbers: {
     title: 'Line numbering',
     off: 'None',
diff --git a/src/lib/templates/din5008b.ts b/src/lib/templates/din5008b.ts
new file mode 100644
index 0000000..a9f6590
--- /dev/null
+++ b/src/lib/templates/din5008b.ts
@@ -0,0 +1,69 @@
+import { t } from '../i18n/i18n.svelte';
+import { toDateValue, DEFAULT_DATE_FORMAT } from '../utils/dateTime';
+import type { TemplateData, TemplateEntry } from './types';
+
+// DIN 5008 Form B business letter. All vertical positions are paragraph rhythm from a
+// 20mm top margin at 12pt single spacing (one line ≈ 4.87mm — Liberation Serif's
+// natural line height is ~1.15em); the mm targets below are the norm's.
+
+// Letterhead line height in pt; the space that lands the return-address line at 45mm.
+const LINE_PT = 12 * 1.15;
+const MM_TO_PT = 72 / 25.4;
+// 45mm target − 20mm margin − one letterhead line.
+const RETURN_SPACE_BEFORE_PT = Math.round((45 - 20) * MM_TO_PT - LINE_PT);
+// The return-address zone is 5mm tall; its 8pt line fills ~3.25mm of it.
+const RETURN_SPACE_AFTER_PT = Math.round((5 * MM_TO_PT - 8 * 1.15) * 10) / 10;
+// Info block at 125mm from the paper edge = 10cm from the 25mm text margin.
+const INFO_TAB = '10l';
+
+type N = Record<string, unknown>;
+const T = (text: string, ...marks: N[]): N => ({ type: 'text', text, ...(marks.length ? { marks } : {}) });
+const PLH = (text: string, ...marks: N[]): N => ({ type: 'placeholderField', attrs: { text }, ...(marks.length ? { marks } : {}) });
+const P = (attrs: N | null, ...content: N[]): N => ({ type: 'paragraph', ...(attrs ? { attrs } : {}), ...(content.length ? { content } : {}) });
+const SMALL = { type: 'textStyle', attrs: { fontSize: '8pt' } };
+const BOLD = { type: 'bold' };
+
+function buildLetter(): TemplateData {
+  const L = t().templates.letter;
+  const addressRow = (attrs: N | null, addr: N[], info: N[]): N =>
+    P({ ...(attrs ?? {}), tabStops: INFO_TAB }, ...addr, T('\t'), ...info);
+  const date: N = { type: 'dateTimeField', attrs: { kind: 'date', format: DEFAULT_DATE_FORMAT, fixed: true, value: toDateValue(new Date()) } };
+  return {
+    margins: { top: 2, bottom: 2, left: 2.5, right: 2 },
+    foldMarks: true,
+    content: {
+      type: 'doc',
+      content: [
+        P(null, PLH(L.companyName, BOLD)),
+        // The one-line return address opens the address field at 45mm from the top.
+        P({ spaceBefore: RETURN_SPACE_BEFORE_PT, spaceAfter: RETURN_SPACE_AFTER_PT }, PLH(L.returnAddress, SMALL)),
+        addressRow(null, [PLH(L.recipientCompany)], [T(L.yourRef), PLH(L.reference)]),
+        addressRow(null, [PLH(L.recipientName)], [T(L.yourMessage), PLH(L.date)]),
+        addressRow(null, [PLH(L.recipientStreet)], [T(L.ourRef), PLH(L.reference)]),
+        addressRow(null, [PLH(L.recipientCity)], [T(L.phone), PLH(L.phoneNumber)]),
+        addressRow(null, [], [T(L.email), PLH(L.emailAddress)]),
+        addressRow(null, [], [T(L.dateLabel), date]),
+        P(null),
+        P(null),
+        P(null, PLH(L.subject, BOLD)),
+        P(null),
+        P(null, PLH(L.salutation)),
+        P(null),
+        P(null, PLH(L.bodyText)),
+        P(null),
+        P(null, T(L.closing)),
+        P(null),
+        P(null),
+        P(null),
+        P(null, PLH(L.signature)),
+      ],
+    },
+  };
+}
+
+export const din5008b: TemplateEntry = {
+  id: 'din5008b',
+  name: () => t().templates.din5008b.name,
+  description: () => t().templates.din5008b.description,
+  build: buildLetter,
+};
diff --git a/src/lib/templates/registry.ts b/src/lib/templates/registry.ts
new file mode 100644
index 0000000..c553f97
--- /dev/null
+++ b/src/lib/templates/registry.ts
@@ -0,0 +1,4 @@
+import { din5008b } from './din5008b';
+import type { TemplateEntry } from './types';
+
+export const TEMPLATES: TemplateEntry[] = [din5008b];
diff --git a/src/lib/templates/types.ts b/src/lib/templates/types.ts
new file mode 100644
index 0000000..5246651
--- /dev/null
+++ b/src/lib/templates/types.ts
@@ -0,0 +1,21 @@
+import type { Content } from '@tiptap/core';
+import type { PageMargins } from '../storage/pageMargins';
+import type { Style } from '../styles/styleSheet';
+
+// What a built-in template sets besides the content; applyTemplate (App.svelte)
+// resets everything first, so an absent field keeps the app default.
+export interface TemplateData {
+  content: Content;
+  margins?: PageMargins;
+  /** Named paragraph styles the template ships, merged over the built-ins. */
+  styles?: Style[];
+  foldMarks?: boolean;
+}
+
+// name/description/build read t() at call time, so a template follows the UI locale.
+export interface TemplateEntry {
+  id: string;
+  name: () => string;
+  description: () => string;
+  build: () => TemplateData;
+}