diff --git a/README.md b/README.md
index b88525a..2e8d605 100644
--- a/README.md
+++ b/README.md
@@ -260,7 +260,7 @@ console.log(globalThis.COMPILED_FROM_VERSION); // например, "0.3.7"
 PrintFullDocumentation();
 ```
 
-Она формирует единый документ из всех страниц в порядке manifest и открывает системный диалог печати. Каждая страница документации начинается с нового печатного листа. Печатная тема всегда использует белый фон и чёрный текст независимо от выбранной экранной темы.
+Она сразу закрывает интерфейс тематическим loading-overlay, формирует единый документ из всех страниц в порядке manifest, подставляет и декодирует все изображения, ожидает готовности шрифтов и только затем открывает системный диалог печати. Каждая страница документации начинается с нового печатного листа. Печатная тема всегда использует белый фон, чёрный текст и компактные заголовки независимо от выбранной экранной темы.
 
 ## Live-preview
 
diff --git a/docslib/_version.py b/docslib/_version.py
index 84cd7c2..89acfb9 100644
--- a/docslib/_version.py
+++ b/docslib/_version.py
@@ -1,3 +1,3 @@
 """Single source of truth for the SharedDocsLib package version."""
 
-__version__ = "0.3.8"
+__version__ = "0.3.9"
diff --git a/docslib/templates/client.css b/docslib/templates/client.css
index 38a646e..b5533ff 100644
--- a/docslib/templates/client.css
+++ b/docslib/templates/client.css
@@ -135,6 +135,8 @@ button { color: inherit; }
 
 .mobile-view, .mobile-dock { display: none; }
 .full-print-document { display: none; }
+.print-loading-overlay { position: fixed; inset: 0; z-index: 2147483647; display: grid; width: 100vw; height: 100dvh; place-items: center; color: var(--text); background: var(--shell); }
+.print-loading-spinner { width: 48px; height: 48px; box-sizing: border-box; border: solid 4px currentColor; border-top-color: transparent; border-radius: 9999px; animation: refresh-spin .8s linear infinite; }
 
 @media (max-width: 820px) {
   .app-shell { display: block; }
@@ -186,7 +188,7 @@ button { color: inherit; }
   .content a, .content figcaption, .content blockquote { color: #000 !important; }
   .content pre, .content code, .content details, .content th, .callout { color: #000 !important; background: #fff !important; border-color: #777 !important; }
   .app-shell { display: block; }
-  .desktop-header, .desktop-sidebar, .mobile-dock, .page-navigation { display: none; }
+  .desktop-header, .desktop-sidebar, .mobile-dock, .page-navigation, .print-loading-overlay { display: none !important; }
   .workspace, .page-surface { display: block; height: auto; overflow: visible; }
   .content { width: 100%; padding: 0; }
   body.docslib-print-all > .app-shell { display: none; }
@@ -194,6 +196,9 @@ button { color: inherit; }
   .print-page { break-after: page; page-break-after: always; }
   .print-page:last-child { break-after: auto; page-break-after: auto; }
   .print-page-heading { margin: 0 0 2rem; padding-bottom: 1rem; border-bottom: 1px solid #777; }
-  .print-page-heading h1 { margin: 0; color: #000 !important; }
+  .print-page-heading h1 { margin: 0; color: #000 !important; font-size: 1.35rem !important; line-height: 1.25; }
   .print-page-number { display: block; margin-bottom: .3rem; color: #555 !important; }
+  .print-page-content h1 { font-size: 1.8rem !important; line-height: 1.25; }
+  .print-page-content h2 { font-size: 1.4rem !important; line-height: 1.3; }
+  .print-page-content h3 { font-size: 1.15rem !important; line-height: 1.35; }
 }
diff --git a/docslib/templates/client.js b/docslib/templates/client.js
index df90dd2..dd962f2 100644
--- a/docslib/templates/client.js
+++ b/docslib/templates/client.js
@@ -226,11 +226,14 @@
     return asset ? `data:${asset.mime};base64,${asset.data}` : "";
   }
 
-  function hydrateAssets(root = elements.content) {
+  function hydrateAssets(root = elements.content, { eager = false } = {}) {
     root.querySelectorAll("[data-docslib-asset]").forEach((element) => {
       const name = element.dataset.docslibAsset;
       const uri = assetDataUri(name);
-      if (uri && element.tagName === "IMG") element.src = uri;
+      if (uri && element.tagName === "IMG") {
+        if (eager) element.loading = "eager";
+        element.src = uri;
+      }
       else if (!uri) element.setAttribute("title", name);
     });
   }
@@ -240,37 +243,76 @@
     document.getElementById("docslib-full-print")?.remove();
   }
 
-  function PrintFullDocumentation() {
+  function showPrintLoading() {
+    document.getElementById("docslib-print-loading")?.remove();
+    const overlay = document.createElement("div");
+    overlay.id = "docslib-print-loading";
+    overlay.className = "print-loading-overlay";
+    overlay.setAttribute("aria-hidden", "true");
+    const spinner = document.createElement("div");
+    spinner.className = "print-loading-spinner";
+    overlay.append(spinner);
+    document.body.append(overlay);
+    return overlay;
+  }
+
+  async function waitForPrintAssets(root) {
+    const images = [...root.querySelectorAll("img")];
+    await Promise.all(images.map(async (image) => {
+      if (!image.complete) {
+        await new Promise((resolve) => {
+          image.addEventListener("load", resolve, { once: true });
+          image.addEventListener("error", resolve, { once: true });
+        });
+      }
+      if (typeof image.decode === "function" && image.naturalWidth > 0) {
+        await image.decode().catch(() => {});
+      }
+    }));
+    if (document.fonts && document.fonts.ready) await document.fonts.ready;
+    await new Promise((resolve) => requestAnimationFrame(() => requestAnimationFrame(resolve)));
+  }
+
+  async function PrintFullDocumentation() {
+    const overlay = showPrintLoading();
     removeFullPrintDocument();
-    const printable = document.createElement("div");
-    printable.id = "docslib-full-print";
-    printable.className = "full-print-document";
+    try {
+      const printable = document.createElement("div");
+      printable.id = "docslib-full-print";
+      printable.className = "full-print-document";
 
-    manifest.pages.forEach((page) => {
-      const article = document.createElement("article");
-      article.className = "content print-page";
-      article.dataset.page = page.number;
+      manifest.pages.forEach((page) => {
+        const article = document.createElement("article");
+        article.className = "content print-page";
+        article.dataset.page = page.number;
 
-      const heading = document.createElement("header");
-      heading.className = "print-page-heading";
-      const number = document.createElement("span");
-      number.className = "print-page-number";
-      number.textContent = page.number;
-      const title = document.createElement("h1");
-      title.textContent = page.title;
-      heading.append(number, title);
+        const heading = document.createElement("header");
+        heading.className = "print-page-heading";
+        const number = document.createElement("span");
+        number.className = "print-page-number";
+        number.textContent = page.number;
+        const title = document.createElement("h1");
+        title.textContent = page.title;
+        heading.append(number, title);
 
-      const body = document.createElement("div");
-      body.className = "print-page-content";
-      body.innerHTML = page.content || "";
-      article.append(heading, body);
-      hydrateAssets(article);
-      printable.append(article);
-    });
+        const body = document.createElement("div");
+        body.className = "print-page-content";
+        body.innerHTML = page.content || "";
+        article.append(heading, body);
+        hydrateAssets(article, { eager: true });
+        printable.append(article);
+      });
 
-    document.body.append(printable);
-    document.body.classList.add("docslib-print-all");
-    requestAnimationFrame(() => requestAnimationFrame(() => window.print()));
+      document.body.append(printable);
+      await waitForPrintAssets(printable);
+      document.body.classList.add("docslib-print-all");
+      window.print();
+    } catch (error) {
+      removeFullPrintDocument();
+      throw error;
+    } finally {
+      overlay.remove();
+    }
   }
 
   globalThis.PrintFullDocumentation = PrintFullDocumentation;
diff --git a/tests/test_server.py b/tests/test_server.py
index 23b7189..46105fa 100644
--- a/tests/test_server.py
+++ b/tests/test_server.py
@@ -97,7 +97,7 @@ def test_all_endpoints_and_self_contained_build(tmp_path):
     assert html_response.status_code == 200
     assert "http://127.0.0.1:9000/manifest.json" in html
     assert "http://127.0.0.1:9000/version" in html
-    assert 'globalThis.COMPILED_FROM_VERSION = "0.3.8";' in html
+    assert 'globalThis.COMPILED_FROM_VERSION = "0.3.9";' in html
     assert ".content { --custom-test: yes; }" in html
     assert r'document.body.dataset.customTest = \"yes\";' in html
     assert 'id="docslib-loading"' in html
@@ -160,10 +160,20 @@ def test_all_endpoints_and_self_contained_build(tmp_path):
     assert 'printable.id = "docslib-full-print"' in system_js
     assert "manifest.pages.forEach((page) =>" in system_js
     assert 'window.addEventListener("afterprint", removeFullPrintDocument)' in system_js
+    assert "async function PrintFullDocumentation()" in system_js
+    assert "await waitForPrintAssets(printable)" in system_js
+    assert 'if (eager) element.loading = "eager"' in system_js
+    assert "hydrateAssets(article, { eager: true })" in system_js
+    assert 'image.addEventListener("load", resolve, { once: true })' in system_js
+    assert 'await image.decode().catch(() => {})' in system_js
+    assert "await document.fonts.ready" in system_js
     system_css = manifest["client"]["css"]["system"]
     assert 'body.docslib-print-all > .full-print-document { display: block; }' in system_css
     assert 'color: #000 !important; background: #fff !important;' in system_css
     assert ".print-page { break-after: page; page-break-after: always; }" in system_css
+    assert ".print-loading-overlay { position: fixed; inset: 0; z-index: 2147483647; display: grid; width: 100vw; height: 100dvh" in system_css
+    assert ".print-page-heading h1 { margin: 0; color: #000 !important; font-size: 1.35rem !important" in system_css
+    assert ".print-page-content h1 { font-size: 1.8rem !important" in system_css
     assert "--shell: #000000" in html
     assert 'id="desktop-search-input"' in html
     assert '<header class="desktop-header">' in html
@@ -208,7 +218,7 @@ def test_all_endpoints_and_self_contained_build(tmp_path):
 
 
 def test_build_writes_static_bundle(tmp_path):
-    assert __version__ == "0.3.8"
+    assert __version__ == "0.3.9"
 
     @Page("1", "Static page")
     def static_page():