diff --git a/src/templates/registry.ts b/src/templates/registry.ts
index 8afded0..a91e587 100644
--- a/src/templates/registry.ts
+++ b/src/templates/registry.ts
@@ -113,6 +113,7 @@ import saasUptimeStatus from './saas/uptime-status';
 import saasApiEndpoint from './saas/api-endpoint';
 import saasRoadmap from './saas/roadmap';
 import saasMaintenance from './saas/maintenance';
+import saasDeprecation from './saas/deprecation';
 
 [
   saasDashboardPreview, saasPricingHighlight, saasMetricShowcase, saasTestimonialBanner,
@@ -123,6 +124,7 @@ import saasMaintenance from './saas/maintenance';
   saasApiEndpoint,
   saasRoadmap,
   saasMaintenance,
+  saasDeprecation,
 ].forEach(registerTemplate);
 
 // GitHub
diff --git a/src/templates/saas/deprecation.ts b/src/templates/saas/deprecation.ts
new file mode 100644
index 0000000..851e3bd
--- /dev/null
+++ b/src/templates/saas/deprecation.ts
@@ -0,0 +1,136 @@
+import type { SatoriElement, TemplateDefinition } from '../types';
+import { arrowRightIcon, autoFontSize, commonFields, isLightColor, mixColors, truncate } from '../utils';
+
+const cleanText = (value: unknown, maxLength: number) =>
+  truncate(String(value ?? '').replace(/\s+/g, ' ').trim(), maxLength);
+
+const template: TemplateDefinition = {
+  id: 'saas-deprecation',
+  name: 'Deprecation Notice',
+  category: 'saas',
+  description: 'Announce a deprecated API, feature, or version with its replacement and sunset date',
+  tags: ['saas', 'deprecated', 'deprecation', 'sunset', 'migration'],
+  fields: [
+    commonFields.title,
+    { key: 'replacement', label: 'Replacement', type: 'text', defaultValue: 'API v2', placeholder: 'What replaces it', group: 'Content' },
+    { key: 'sunsetDate', label: 'Sunset Date', type: 'text', defaultValue: 'Shuts down on March 31, 2027', placeholder: 'When it will be unavailable', group: 'Content' },
+    commonFields.description,
+    commonFields.siteName,
+    commonFields.bgColor,
+    commonFields.accentColor,
+    commonFields.textColor,
+  ],
+  defaults: {
+    title: 'API v1',
+    replacement: 'API v2',
+    sunsetDate: 'Shuts down on March 31, 2027',
+    description: 'The migration guide is in the docs',
+    siteName: 'Acme API',
+    bgColor: '#0b0f1a',
+    accentColor: '#f97316',
+    textColor: '#f8fafc',
+  },
+  render: (params) => {
+    const rawTitle = String(params.title || 'API v1').replace(/\s+/g, ' ').trim() || 'API v1';
+    const titleSize = autoFontSize(rawTitle, [
+      { maxLen: 16, size: 76 },
+      { maxLen: 28, size: 64 },
+      { maxLen: 44, size: 52 },
+      { maxLen: 72, size: 42 },
+    ]);
+    const title = truncate(rawTitle, 44);
+    const rawReplacement = String(params.replacement ?? '').replace(/\s+/g, ' ').trim();
+    const replacementSize = autoFontSize(rawReplacement, [
+      { maxLen: 16, size: 76 },
+      { maxLen: 28, size: 64 },
+      { maxLen: 44, size: 52 },
+      { maxLen: 72, size: 42 },
+    ]);
+    const replacement = truncate(rawReplacement, 44);
+    const sunsetDate = cleanText(params.sunsetDate, 72);
+    const description = cleanText(params.description, 100);
+    const siteName = cleanText(params.siteName, 40);
+    const bgColor = String(params.bgColor || '#0b0f1a');
+    const accentColor = String(params.accentColor || '#f97316');
+    const textColor = String(params.textColor || '#f8fafc');
+    const accentInk = isLightColor(bgColor) ? mixColors(accentColor, '#000000', 0.45) : accentColor;
+    const mutedColor = mixColors(bgColor, textColor, 0.68);
+
+    const nameRow: SatoriElement[] = [
+      {
+        type: 'div',
+        props: {
+          style: {
+            display: 'flex',
+            flexDirection: 'column',
+            ...(replacement ? { flex: 1 } : {}),
+            minWidth: 0,
+          },
+          children: [
+            { type: 'span', props: { style: { fontSize: '16px', fontWeight: 700, letterSpacing: '0.12em', color: mutedColor, textTransform: 'uppercase' }, children: 'NO LONGER SUPPORTED' } },
+            { type: 'h1', props: { style: { display: 'flex', overflow: 'hidden', fontSize: `${titleSize}px`, lineHeight: 1.05, fontWeight: 700, color: textColor, textDecoration: 'line-through', margin: '18px 0 0' }, children: title } },
+          ],
+        },
+      },
+      ...(replacement
+        ? [
+            { type: 'div', props: { style: { display: 'flex', flexShrink: 0, margin: '0 28px' }, children: arrowRightIcon(50, accentInk) } },
+            {
+              type: 'div',
+              props: {
+                style: { display: 'flex', flexDirection: 'column', flex: 1, minWidth: 0 },
+                children: [
+                  { type: 'span', props: { style: { fontSize: '16px', fontWeight: 700, letterSpacing: '0.12em', color: accentInk, textTransform: 'uppercase' }, children: 'USE INSTEAD' } },
+                  { type: 'span', props: { style: { display: 'flex', overflow: 'hidden', fontSize: `${replacementSize}px`, lineHeight: 1.05, fontWeight: 700, color: textColor, marginTop: '18px' }, children: replacement } },
+                ],
+              },
+            },
+          ]
+        : []),
+    ];
+
+    return {
+      type: 'div',
+      props: {
+        style: {
+          display: 'flex',
+          flexDirection: 'column',
+          width: '1200px',
+          height: '630px',
+          padding: '58px 72px 48px',
+          boxSizing: 'border-box',
+          backgroundColor: bgColor,
+          fontFamily: 'Inter, sans-serif',
+        },
+        children: [
+          {
+            type: 'div',
+            props: { style: { display: 'flex', alignItems: 'center', justifyContent: 'space-between', minHeight: '54px' }, children: [
+              {
+                type: 'div',
+                props: { style: { display: 'flex', alignItems: 'center', padding: '10px 20px', borderRadius: '999px', backgroundColor: `${accentInk}14`, border: `1px solid ${accentInk}66` }, children: {
+                  type: 'span', props: { style: { fontSize: '18px', fontWeight: 700, letterSpacing: '0.1em', textTransform: 'uppercase', color: accentInk }, children: 'Deprecated' },
+                } },
+              },
+            ] },
+          },
+          {
+            type: 'div',
+            props: { style: { display: 'flex', alignItems: 'center', flex: 1, minHeight: 0, marginTop: '28px' }, children: nameRow },
+          },
+          ...(sunsetDate
+            ? [{ type: 'span', props: { style: { fontSize: '30px', fontWeight: 700, lineHeight: 1.2, color: accentInk, marginTop: '16px' }, children: sunsetDate } }]
+            : []),
+          ...(description
+            ? [{ type: 'span', props: { style: { fontSize: '22px', lineHeight: 1.3, color: mutedColor, marginTop: '12px' }, children: description } }]
+            : []),
+          ...(siteName
+            ? [{ type: 'span', props: { style: { alignSelf: 'flex-end', fontSize: '20px', fontWeight: 600, color: mutedColor, marginTop: 'auto' }, children: siteName } }]
+            : []),
+        ],
+      },
+    };
+  },
+};
+
+export default template;
diff --git a/src/templates/saas/index.ts b/src/templates/saas/index.ts
index a4242fd..ea61858 100644
--- a/src/templates/saas/index.ts
+++ b/src/templates/saas/index.ts
@@ -13,3 +13,4 @@ export { default as saasUptimeStatus } from './uptime-status';
 export { default as saasApiEndpoint } from './api-endpoint';
 export { default as saasRoadmap } from './roadmap';
 export { default as saasMaintenance } from './maintenance';
+export { default as saasDeprecation } from './deprecation';
diff --git a/tests/templates/deprecation.test.ts b/tests/templates/deprecation.test.ts
new file mode 100644
index 0000000..6eb734b
--- /dev/null
+++ b/tests/templates/deprecation.test.ts
@@ -0,0 +1,111 @@
+import { describe, expect, it } from 'vitest';
+import deprecation from '@/templates/saas/deprecation';
+import { saasDeprecation } from '@/templates/saas';
+import { getTemplate, getTemplatesByCategory } from '@/templates/registry';
+import type { SatoriElement } from '@/templates/types';
+
+function walk(node: unknown, visit: (element: SatoriElement) => void): void {
+  if (Array.isArray(node)) {
+    node.forEach((child) => walk(child, visit));
+    return;
+  }
+  if (!node || typeof node !== 'object' || !('type' in node)) return;
+
+  const element = node as SatoriElement;
+  visit(element);
+  walk(element.props.children, visit);
+}
+
+function allElements(node: unknown): SatoriElement[] {
+  const found: SatoriElement[] = [];
+  walk(node, (element) => found.push(element));
+  return found;
+}
+
+function textContent(node: unknown): string[] {
+  if (typeof node === 'string') return [node];
+  if (Array.isArray(node)) return node.flatMap(textContent);
+  if (node && typeof node === 'object' && 'props' in node) {
+    return textContent((node as SatoriElement).props.children);
+  }
+  return [];
+}
+
+const render = (overrides: Record<string, unknown> = {}) =>
+  deprecation.render({ ...deprecation.defaults, ...overrides });
+
+describe('saas-deprecation', () => {
+  it('is re-exported and registered exactly once in the SaaS category', () => {
+    expect(saasDeprecation).toBe(deprecation);
+    expect(getTemplate('saas-deprecation')).toBe(deprecation);
+    expect(getTemplatesByCategory('saas').filter((template) => template.id === 'saas-deprecation'))
+      .toHaveLength(1);
+  });
+
+  it('renders the deprecated name, replacement, sunset date, note, and site name', () => {
+    expect(textContent(render())).toEqual([
+      'Deprecated',
+      'NO LONGER SUPPORTED',
+      'API v1',
+      'USE INSTEAD',
+      'API v2',
+      'Shuts down on March 31, 2027',
+      'The migration guide is in the docs',
+      'Acme API',
+    ]);
+    expect(allElements(render()).find((element) =>
+      element.type === 'span' && textContent(element).includes('Acme API')
+    )?.props.style.alignSelf).toBe('flex-end');
+    expect(allElements(render()).some((element) => element.type === 'svg')).toBe(true);
+  });
+
+  it('hides whitespace-only optional fields and the arrow when the replacement is empty', () => {
+    const tree = render({ replacement: '  ', sunsetDate: '   ', description: '  ', siteName: ' ' });
+    expect(textContent(tree)).toEqual(['Deprecated', 'NO LONGER SUPPORTED', 'API v1']);
+    expect(allElements(tree).some((element) => element.type === 'svg')).toBe(false);
+  });
+
+  it('shrinks then truncates long old and replacement names', () => {
+    const tree = render({ title: 'Old API name '.repeat(9), replacement: 'Replacement API name '.repeat(8) });
+    const elements = allElements(tree);
+    const oldName = elements.find((element) => element.type === 'h1');
+    const newName = elements.find((element) =>
+      element.type === 'span' && textContent(element).some((text) => text.startsWith('Replacement API'))
+    );
+
+    expect(textContent(oldName)[0].length).toBeLessThanOrEqual(44);
+    expect(textContent(oldName)[0]).toMatch(/…$/);
+    expect(oldName?.props.style.fontSize).toBe('42px');
+    expect(oldName?.props.style.textDecoration).toBe('line-through');
+    expect(textContent(newName)[0].length).toBeLessThanOrEqual(44);
+    expect(textContent(newName)[0]).toMatch(/…$/);
+    expect(newName?.props.style.fontSize).toBe('42px');
+  });
+
+  it('darkens label and accent text on a light background with a pale accent', () => {
+    const tree = render({ bgColor: '#ffffff', textColor: '#111111', accentColor: '#fde047' });
+    const elements = allElements(tree);
+    const deprecatedLabel = elements.find((element) =>
+      textContent(element).includes('Deprecated') && element.type === 'span'
+    );
+    const replacementLabel = elements.find((element) =>
+      textContent(element).includes('USE INSTEAD') && element.type === 'span'
+    );
+    const sunset = elements.find((element) =>
+      element.type === 'span' && textContent(element).includes('Shuts down on March 31, 2027')
+    );
+
+    expect(deprecatedLabel?.props.style.color).toBe('#8b7b27');
+    expect(replacementLabel?.props.style.color).toBe('#8b7b27');
+    expect(sunset?.props.style.color).toBe('#8b7b27');
+  });
+
+  it('uses the required canvas size and flex layout for all divs', () => {
+    const elements = allElements(render());
+    expect(elements[0].props.style.width).toBe('1200px');
+    expect(elements[0].props.style.height).toBe('630px');
+    expect(elements.every((element) =>
+      element.type !== 'div' || element.props.style?.display === 'flex'
+    )).toBe(true);
+  });
+});