diff --git a/index.html b/index.html
index ee6d997..9f55a4b 100644
--- a/index.html
+++ b/index.html
@@ -334,9 +334,26 @@
         <button id="export-btn" class="export-btn" disabled data-i18n="ui.exportStl">Export STL</button>
       </section>
 
+      <button id="license-link" class="license-link" data-i18n="license.btn">License &amp; Terms</button>
+
     </aside>
   </main>
 
+  <!-- License popup -->
+  <div id="license-overlay" class="license-overlay hidden" role="dialog" aria-modal="true" aria-labelledby="license-title">
+    <div class="license-modal">
+      <button id="license-close" class="license-close-btn" aria-label="Close">&#215;</button>
+      <h2 id="license-title" data-i18n="license.title">License &amp; Terms</h2>
+      <ul class="license-list">
+        <li data-i18n-html="license.item1">This tool is <strong>open-source</strong> — <a href="https://github.com/CNCKitchen/stlTexturizer" target="_blank" rel="noopener">view &amp; contribute on GitHub</a>.</li>
+        <li data-i18n-html="license.item2">Free to use for any purpose, including <strong>commercial work</strong> (e.g., texturing STLs for clients or products).</li>
+        <li data-i18n-html="license.item3">Attribution is <strong>appreciated</strong> but <strong>not required</strong> when using this tool as-is.</li>
+        <li data-i18n-html="license.item4">You may <strong>not</strong> sell or commercially redistribute this tool itself.</li>
+        <li data-i18n-html="license.item5">Forks or derivative works must credit <strong>CNC Kitchen</strong> by name and link to <a href="https://cnckitchen.store" target="_blank" rel="noopener">cnckitchen.store</a>.</li>
+      </ul>
+    </div>
+  </div>
+
   <!-- Sponsor popup -->
   <div id="sponsor-overlay" class="sponsor-overlay hidden" role="dialog" aria-modal="true" aria-labelledby="sponsor-title">
     <div class="sponsor-modal">
diff --git a/js/i18n.js b/js/i18n.js
index 0191f94..028e2bf 100644
--- a/js/i18n.js
+++ b/js/i18n.js
@@ -124,6 +124,15 @@ export const TRANSLATIONS = {
     'progress.done':                 'Done!',
     'progress.processing':           'Processing\u2026',
 
+    // License popup
+    'license.btn':    'License & Terms',
+    'license.title':  'License & Terms',
+    'license.item1':  'This tool is <strong>open-source</strong> \u2014 <a href="https://github.com/CNCKitchen/stlTexturizer" target="_blank" rel="noopener">view &amp; contribute on GitHub</a>.',
+    'license.item2':  'Free to use for any purpose, including <strong>commercial work</strong> (e.g., texturing STLs for clients or products).',
+    'license.item3':  'Attribution is <strong>appreciated</strong> but <strong>not required</strong> when using this tool as-is.',
+    'license.item4':  'You may <strong>not</strong> sell or commercially redistribute this tool itself.',
+    'license.item5':  'Forks or derivative works must credit <strong>CNC Kitchen</strong> by name and link to <a href="https://cnckitchen.store" target="_blank" rel="noopener">cnckitchen.store</a>.',
+
     // Sponsor modal
     'sponsor.title':           'Thanks for using CNC Kitchen STL Texturizer!',
     'sponsor.body':            'This tool is provided <strong>completely free</strong> by CNC Kitchen.<br>While your STL is being processed, why not check out the store that helps us keep making cool stuff for you?',
@@ -262,6 +271,15 @@ export const TRANSLATIONS = {
     'progress.done':                 'Fertig!',
     'progress.processing':           'Verarbeitung\u2026',
 
+    // License popup
+    'license.btn':    'Lizenz & Nutzung',
+    'license.title':  'Lizenz & Nutzungsbedingungen',
+    'license.item1':  'Dieses Tool ist <strong>Open Source</strong> \u2014 <a href="https://github.com/CNCKitchen/stlTexturizer" target="_blank" rel="noopener">auf GitHub ansehen &amp; beitragen</a>.',
+    'license.item2':  'Kostenlos nutzbar f\u00fcr jeden Zweck, auch f\u00fcr <strong>kommerzielle Arbeit</strong> (z.B. Texturierung von STLs f\u00fcr Kunden oder Produkte).',
+    'license.item3':  'Namensnennung wird <strong>gesch\u00e4tzt</strong>, ist aber bei der Nutzung dieses Tools <strong>nicht erforderlich</strong>.',
+    'license.item4':  'Das Tool selbst darf <strong>nicht</strong> verkauft oder kommerziell weitervertrieben werden.',
+    'license.item5':  'Forks oder abgeleitete Werke m\u00fcssen <strong>CNC Kitchen</strong> namentlich nennen und auf <a href="https://cnckitchen.store" target="_blank" rel="noopener">cnckitchen.store</a> verlinken.',
+
     // Sponsor modal
     'sponsor.title':           'Danke f\u00fcr die Nutzung des CNC Kitchen STL Texturizers!',
     'sponsor.body':            'Dieses Tool wird von CNC Kitchen <strong>komplett kostenlos</strong> bereitgestellt.<br>W\u00e4hrend dein STL verarbeitet wird, schau doch mal im Shop vorbei, der uns hilft, coole Sachen f\u00fcr dich zu machen!',
diff --git a/js/main.js b/js/main.js
index 560ee93..3da43ce 100644
--- a/js/main.js
+++ b/js/main.js
@@ -131,6 +131,11 @@ const exclModeIncludeBtn  = document.getElementById('excl-mode-include');
 const exclSectionHeading  = document.getElementById('excl-section-heading');
 const exclHint            = document.getElementById('excl-hint');
 
+// ── License panel DOM refs ────────────────────────────────────────────────────
+const licenseLink    = document.getElementById('license-link');
+const licenseOverlay = document.getElementById('license-overlay');
+const licenseClose   = document.getElementById('license-close');
+
 // ── Scale slider log helpers ──────────────────────────────────────────────────
 // Slider stores 0–1000; actual scale spans 0.05–10 on a log axis.
 // Middle position 500 → scale ~0.71 (log midpoint between 0.05 and 10).
@@ -332,6 +337,13 @@ function wireEvents() {
     toggleDisplacementPreview(dispPreviewToggle.checked);
   });
 
+  // ── License ──
+  licenseLink.addEventListener('click', () => licenseOverlay.classList.remove('hidden'));
+  licenseClose.addEventListener('click', () => licenseOverlay.classList.add('hidden'));
+  licenseOverlay.addEventListener('click', (e) => {
+    if (e.target === licenseOverlay) licenseOverlay.classList.add('hidden');
+  });
+
   // ── Export ──
   exportBtn.addEventListener('click', () => {
     if (sessionStorage.getItem('stlt-no-sponsor') === '1') {
@@ -469,8 +481,9 @@ function wireEvents() {
   });
 
   document.addEventListener('keydown', (e) => {
-    if (e.key === 'Escape' && exclusionTool) {
-      setExclusionTool(null);
+    if (e.key === 'Escape') {
+      if (exclusionTool) setExclusionTool(null);
+      licenseOverlay.classList.add('hidden');
     }
   });
 }
diff --git a/style.css b/style.css
index 340389b..fb3bf3a 100644
--- a/style.css
+++ b/style.css
@@ -835,4 +835,112 @@ input[type="number"].val:focus { outline: none; border-color: var(--accent); }
 .sponsor-close-btn:hover {
   background: var(--border);
   border-color: var(--accent);
+}
+
+/* ── License link (sidebar) ──────────────────────────────────────────────── */
+.license-link {
+  display: block;
+  width: 100%;
+  padding: 12px 0;
+  background: none;
+  border: none;
+  color: var(--text-muted);
+  font-size: 0.82rem;
+  text-align: center;
+  cursor: pointer;
+  text-decoration: underline;
+  text-decoration-color: transparent;
+  transition: color 0.15s, text-decoration-color 0.15s;
+}
+
+.license-link:hover {
+  color: var(--accent);
+  text-decoration-color: var(--accent);
+}
+
+/* ── License popup overlay ───────────────────────────────────────────────── */
+.license-overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.6);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 9999;
+  backdrop-filter: blur(3px);
+}
+
+.license-overlay.hidden { display: none; }
+
+.license-modal {
+  position: relative;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 12px;
+  padding: 28px 32px;
+  max-width: 460px;
+  width: calc(100% - 40px);
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
+}
+
+.license-modal h2 {
+  font-size: 15px;
+  font-weight: 700;
+  color: var(--text);
+  text-transform: none;
+  letter-spacing: 0;
+  margin: 0;
+}
+
+.license-list {
+  margin: 0;
+  padding-left: 1.2em;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.license-list li {
+  font-size: 13px;
+  color: var(--text-muted);
+  line-height: 1.6;
+}
+
+.license-list li strong {
+  color: var(--text);
+}
+
+.license-list li a {
+  color: var(--accent);
+  text-decoration: none;
+}
+
+.license-list li a:hover {
+  text-decoration: underline;
+}
+
+.license-close-btn {
+  position: absolute;
+  top: 14px;
+  right: 14px;
+  width: 26px;
+  height: 26px;
+  padding: 0;
+  background: var(--surface2);
+  border: 1px solid var(--border);
+  border-radius: 50%;
+  color: var(--text-muted);
+  font-size: 15px;
+  line-height: 1;
+  cursor: pointer;
+  transition: background 0.15s, border-color 0.15s, color 0.15s;
+}
+
+.license-close-btn:hover {
+  background: var(--border);
+  border-color: var(--accent);
+  color: var(--text);
 }
\ No newline at end of file
diff --git a/textures/wood.jpg b/textures/wood.jpg
index 21a00ee..055bb43 100644
Binary files a/textures/wood.jpg and b/textures/wood.jpg differ