Jonovono · Oct 24, 2026 · Oct 24, 2026
diff --git a/README.md b/README.md
@@ -1,6 +1,6 @@
 # <img src="assets/icon/icon.iconset/icon_128x128.png" alt="Diffy chameleon" width="40" height="40" align="middle"> Diffy
 
-[Downloads and installation](https://diffy.hitslop.com/downloads) · macOS **beta** · Windows/Linux **alpha**
+[Downloads and installation](https://diffy.run/downloads) · macOS **beta** · Windows/Linux **alpha**
 
 ![Diffy on macOS: a split Rust diff, project change badges, a searchable file list grouped by directory, and project import](assets/screenshot.png)
 

diff --git a/RELEASING.md b/RELEASING.md
@@ -67,7 +67,7 @@ gh release create v0.2.3 --repo hitSlop/diffy --draft --verify-tag \
 
 The manifest archive URL points to its immutable version tag. The app checks `releases/latest/download/update-macos-aarch64.json`, so draft releases are intentionally invisible to automatic checks. Publish only after release verification and explicit release authorization.
 
-Always upload the fixed-name DMG with every release. The website redirects `https://diffy.hitslop.com/download` to GitHub's latest published release asset with that name. Include both DMGs in `SHA256SUMS`; retain the versioned app archive and manifest used by in-app updates.
+Always upload the fixed-name DMG with every release. The website redirects `https://diffy.run/download` to GitHub's latest published release asset with that name. Include both DMGs in `SHA256SUMS`; retain the versioned app archive and manifest used by in-app updates.
 
 ## Update verification
 

diff --git a/site/README.md b/site/README.md
@@ -1,6 +1,6 @@
 # Diffy landing page
 
-Astro static site for https://diffy.hitslop.com. The page uses Commit Mono and a compact, responsive hero banner from `src/assets/hero.png`, with one small bundled script for the cursor-following SVG eye. It has no tracking or payment verification. Touch devices, reduced-motion users, and JavaScript failures keep the original static artwork. Animation stops when settled or offscreen.
+Astro static site for https://diffy.run. The page uses Commit Mono and a compact, responsive hero banner from `src/assets/hero.png`, with one small bundled script for the cursor-following SVG eye. It has no tracking or payment verification. Touch devices, reduced-motion users, and JavaScript failures keep the original static artwork. Animation stops when settled or offscreen.
 
 ```sh
 cd site
@@ -14,7 +14,7 @@ npm run preview
 
 Set `DODO_CHECKOUT_URL` to the HTTPS hosted product checkout URL (for example `https://checkout.dodopayments.com/buy/pdt_example`) at build time. Do not set a private API key. Without the URL, the purchase button is disabled and shows “Checkout coming soon.”
 
-Configure a one-time USD $14.99 product in Dodo. The build sets the checkout return URL to `https://diffy.hitslop.com/thanks`. Put `https://diffy.hitslop.com/downloads` in a Digital Files entitlement's external delivery link and attach it to the product as well, so buyers can keep it. Dodo setup remains manual until the product is ready.
+Configure a one-time USD $14.99 product in Dodo. The build sets the checkout return URL to `https://diffy.run/thanks`. Put `https://diffy.run/downloads` in a Digital Files entitlement's external delivery link and attach it to the product as well, so buyers can keep it. Dodo setup remains manual until the product is ready.
 
 ```sh
 DODO_CHECKOUT_URL='https://checkout.dodopayments.com/buy/YOUR_PRODUCT_ID' npm run build
@@ -46,7 +46,13 @@ Production builds separately from the test matrix, so the placeholder checkout U
 
 The commands above remain available for manual deployment with your existing local Wrangler login. Rebuild with the correct production checkout setting before uploading; never deploy an artifact built with the CI checkout fixture.
 
-Associate `diffy.hitslop.com` in the Pages project's custom domains, then point its DNS CNAME at the project's Pages hostname. Cloudflare must register the custom domain before its DNS redirect can work.
+Keep domain registration at Namecheap and use Cloudflare DNS for `diffy.run`. Associate `diffy.run` in the Pages project's custom domains, then point its proxied apex CNAME at `diffy-site.pages.dev`. The Pages custom-domain association is required in addition to DNS. `www.diffy.run` redirects to the apex, preserving paths and query strings. The former subdomain has been retired without a redirect.
+
+## Crawlers and product facts
+
+The site is prerendered HTML; product information and download instructions do not require JavaScript. `robots.txt` allows all crawlers and advertises `/sitemap.xml`. Keep Cloudflare's Search, Agent, and Training crawler policies set to Allow, with no AI crawler paywall or bot challenges on public documentation.
+
+`src/data/product.ts` supplies the product definition, visible questions, and `/llms-full.txt`; `/llms.txt` links to the canonical documentation. These text endpoints are an additional convenience for assistants, not a ranking guarantee. `/sitemap.xml` includes the homepage and downloads; `/thanks` and the error page use `noindex, follow`. JSON-LD describes the publisher, website, pages, and software application using factual capabilities, with no fabricated reviews or unavailable purchase offers. Update the shared facts when availability or pricing changes.
 
 The post-build `scripts/write-redirects.mjs` generates `dist/_redirects` from the same platform metadata used by the pages. `/download` retains its macOS behavior. `/download/macos`, `/download/windows`, and `/download/linux` use fixed-name assets in GitHub's latest release; unavailable targets redirect to `/downloads` instead. The release script creates an identical copy of the signed and notarized versioned DMG. Upload it with every release; never point the website at an unsigned build.
 
@@ -64,7 +70,7 @@ The landing page displays regular price $24.99 crossed out and $14.99 during bet
 
 ## Dodo dashboard setup
 
-No Dodo CLI or product is configured for this repository. Create one **Diffy — all desktop platforms** product with a one-time **USD $14.99** price (1499 cents), covering macOS beta and Windows/Linux alpha. Create a Digital Files entitlement named **Diffy downloads**, set its external link to **https://diffy.hitslop.com/downloads**, and attach it to the product. Suggested delivery instructions:
+No Dodo CLI or product is configured for this repository. Create one **Diffy — all desktop platforms** product with a one-time **USD $14.99** price (1499 cents), covering macOS beta and Windows/Linux alpha. Create a Digital Files entitlement named **Diffy downloads**, set its external link to **https://diffy.run/downloads**, and attach it to the product. Suggested delivery instructions:
 
 > Choose your platform on the download page. All versions require Git. macOS is beta; Windows and Linux are early alphas with limited hardware testing. Save the page for future releases.
 

diff --git a/site/astro.config.mjs b/site/astro.config.mjs
@@ -1,7 +1,7 @@
 import { defineConfig } from 'astro/config';
 
 export default defineConfig({
-  site: 'https://diffy.hitslop.com',
+  site: 'https://diffy.run',
   output: 'static',
   // Keep the eye controller external so script-src 'self' can remain strict.
   vite: { build: { assetsInlineLimit: 0 } },

diff --git a/site/public/robots.txt b/site/public/robots.txt
@@ -1,2 +1,4 @@
 User-agent: *
 Allow: /
+
+Sitemap: https://diffy.run/sitemap.xml
diff --git a/site/scripts/check-build.mjs b/site/scripts/check-build.mjs
@@ -7,7 +7,7 @@ assert(home.includes('<s>$24.99</s>') && home.includes('during beta'));
 assert(!home.includes('Downloads &amp; installation') && !home.includes('Diffy is in beta.'));
 const checkout = process.env.DODO_CHECKOUT_URL;
 assert.equal(home.includes('checkout.dodopayments.com/buy/'), !!checkout);
-if (checkout) assert(home.includes('redirect_url=https%3A%2F%2Fdiffy.hitslop.com%2Fthanks'));
+if (checkout) assert(home.includes('redirect_url=https%3A%2F%2Fdiffy.run%2Fthanks'));
 const published = new Set((process.env.DIFFY_RELEASED_PLATFORMS || 'macos').split(','));
 const redirects = read('_redirects');
 for (const page of ['downloads/index.html', 'thanks/index.html']) {
@@ -21,4 +21,37 @@ for (const page of ['downloads/index.html', 'thanks/index.html']) {
   }
 }
 assert(redirects.includes('/download https://github.com/hitSlop/diffy/releases/latest/download/Diffy-macos-aarch64.dmg 302'));
-console.log('Pricing, checkout, platform availability, and redirects verified.');
+for (const [page, path] of [['index.html', '/'], ['downloads/index.html', '/downloads'], ['thanks/index.html', '/thanks']]) {
+  const html = read(page);
+  assert(!html.includes('diffy.hitslop.com'));
+  assert(html.includes(`<link rel="canonical" href="https://diffy.run${path}"`));
+  assert(html.includes('content="https://diffy.run/_astro/'));
+  assert.equal(html.includes('noindex, follow'), path === '/thanks');
+}
+const schema = JSON.parse(home.match(/<script type="application\/ld\+json">(.*?)<\/script>/s)[1]);
+const app = schema['@graph'].find(entity => entity['@type'] === 'SoftwareApplication');
+assert.equal(app.url, 'https://diffy.run/');
+assert.deepEqual(app.operatingSystem, ['macOS', 'Windows', 'Linux']);
+assert(app.sameAs.includes('https://github.com/hitSlop/Diffy'));
+assert(!app.offers && !app.aggregateRating);
+assert(home.includes('Diffy is a native Git diff viewer built in Rust with GPUI Kit.'));
+const robots = read('robots.txt');
+assert(robots.includes('User-agent: *\nAllow: /'));
+assert(robots.includes('Sitemap: https://diffy.run/sitemap.xml'));
+const sitemap = read('sitemap.xml');
+assert(sitemap.includes('<loc>https://diffy.run/</loc>'));
+assert(sitemap.includes('<loc>https://diffy.run/downloads</loc>'));
+assert(!sitemap.includes('thanks') && !sitemap.includes('404'));
+for (const file of ['llms.txt', 'llms-full.txt']) {
+  const markdown = read(file);
+  assert(markdown.startsWith('# Diffy\n'));
+  assert(markdown.includes('https://diffy.run/downloads'));
+  assert(!markdown.includes('diffy.hitslop.com'));
+}
+const full = read('llms-full.txt');
+assert.equal(full.includes('Checkout is not yet available.'), !checkout);
+for (const platform of ['macos', 'windows', 'linux']) {
+  assert.equal(full.includes(`/downloads#${platform}`), published.has(platform));
+}
+assert(read('404.html').includes('noindex, follow'));
+console.log('Pricing, checkout, downloads, canonical URLs, crawler access, schema, sitemap, and AI documentation verified.');
diff --git a/site/src/data/product.ts b/site/src/data/product.ts
@@ -0,0 +1,14 @@
+import { platforms, price } from './releases';
+
+export const source = 'https://github.com/hitSlop/Diffy';
+export const summary = 'Diffy is a native Git diff viewer built in Rust with GPUI Kit. Review live changes, keep worktrees together, and read GitHub pull requests without checking out a branch.';
+export const questions = [
+  { question: 'Which platforms does Diffy support?', answer: 'Diffy supports macOS, Windows, and Linux. macOS is in beta; Windows and Linux are early alphas with limited hardware testing. Every platform requires Git.' },
+  { question: 'Does Diffy work with coding agents?', answer: 'Diffy discovers local Git projects from Herdr, Codex, and Claude Code. Choose which projects to import, then review their live file changes. Discovery reads local project metadata; it does not run agents or read their conversations.' },
+  { question: 'Can Diffy review GitHub pull requests?', answer: 'Yes. Diffy shows read-only diffs for open and draft GitHub.com pull requests using your existing GitHub CLI login. It does not check out a branch. Review comments, approvals, merging, and GitHub Enterprise are not supported.' },
+  { question: 'Is Diffy open source, and what does it cost?', answer: `Diffy is open source under the MIT license and can be built for free. The suggested one-time purchase is ${price.beta} during beta (regular price ${price.regular}) and supports all platforms. Public downloads are not payment gated.${import.meta.env.DODO_CHECKOUT_URL?.trim() ? '' : ' Checkout is not yet available.'}` },
+];
+
+export function productMarkdown(root: string) {
+  return `# Diffy\n\n> ${summary}\n\nOfficial website: ${root}\nSource code: ${source}\nPublisher: hitSlop (https://labs.hitslop.com)\nLicense: MIT\n\n## Features\n\n- Live staged, unstaged, and untracked Git diffs.\n- Split or unified views, syntax highlighting, expandable context, and source copying.\n- Worktree tabs that remember the selected file and reading position.\n- Whole-file staging and unstaging, with keyboard navigation and a command palette.\n- Read-only GitHub.com pull request diffs using an existing GitHub CLI login.\n- Optional discovery of local projects from Herdr, Codex, and Claude Code.\n\n## Platforms and downloads\n\nAll platforms require Git. macOS is beta; Windows/Linux are early alphas with limited hardware testing.\n\n${platforms.map(platform => `- ${platform.name} (${platform.stage.toLowerCase()}): ${platform.requirements}. ${platform.available ? `Download and installation: ${new URL(`/downloads#${platform.id}`, root)}` : 'A published binary is not yet available.'}`).join('\n')}\n\n## Questions\n\n${questions.map(({ question, answer }) => `### ${question}\n\n${answer}`).join('\n\n')}\n\n## Official links\n\n- Product and features: ${root}\n- Downloads and installation: ${new URL('/downloads', root)}\n- Source and issue tracker: ${source}\n\nDiffy is a separate product from other tools named diffy. Use the official website and repository above to identify it.\n`;
+}
diff --git a/site/src/layouts/Page.astro b/site/src/layouts/Page.astro
@@ -1,8 +1,20 @@
 ---
 import '../styles/site.css';
 import socialImage from '../assets/hero.png';
-const { title = 'Diffy — a native Git diff viewer, in beta', description = 'Review live Git diffs in a native app built in Rust. macOS beta; Windows and Linux alpha. $14.99 during beta, regular price $24.99. One purchase supports all platforms.' } = Astro.props;
-const canonical = new URL(Astro.url.pathname, Astro.site);
+import { summary, source } from '../data/product';
+import { platforms } from '../data/releases';
+const { title = 'Diffy — native Git diff viewer for macOS, Windows & Linux', description = summary, applicationSchema = false, noindex = false } = Astro.props;
+const canonical = new URL(Astro.url.pathname.replace(/\/+$/, '') || '/', Astro.site);
+const root = new URL('/', Astro.site).href;
+const schema = {
+  '@context': 'https://schema.org',
+  '@graph': [
+    { '@type': 'Organization', '@id': `${root}#publisher`, name: 'hitSlop', url: 'https://labs.hitslop.com' },
+    { '@type': 'WebSite', '@id': `${root}#website`, name: 'Diffy', url: root, publisher: { '@id': `${root}#publisher` }, inLanguage: 'en' },
+    { '@type': 'WebPage', '@id': `${canonical}#page`, url: canonical.href, name: title, description, isPartOf: { '@id': `${root}#website` }, ...(applicationSchema ? { mainEntity: { '@id': `${root}#app` } } : {}) },
+    ...(applicationSchema ? [{ '@type': 'SoftwareApplication', '@id': `${root}#app`, name: 'Diffy', url: root, description: summary, applicationCategory: 'DeveloperApplication', operatingSystem: platforms.map(platform => platform.name), publisher: { '@id': `${root}#publisher` }, sameAs: [source], license: 'https://opensource.org/license/mit', screenshot: new URL('/diffy.webp', root).href, downloadUrl: new URL('/downloads', root).href, featureList: ['Live Git diffs', 'Split and unified views', 'Git worktree tabs', 'Read-only GitHub pull request diffs', 'Whole-file staging and unstaging', 'Project discovery from Herdr, Codex, and Claude Code'] }] : []),
+  ],
+};
 const socialImageUrl = new URL(socialImage.src, Astro.site);
 const socialImageAlt = 'A tearful developer at a keyboard says, “thank you for changing my life.” Diffy’s colorful chameleon replies, “i literally only show you diffs.”';
 ---
@@ -14,7 +26,11 @@ const socialImageAlt = 'A tearful developer at a keyboard says, “thank you for
     <meta name="theme-color" content="#000000" />
     <title>{title}</title>
     <meta name="description" content={description} />
+    <meta name="robots" content={noindex ? 'noindex, follow' : 'index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1'} />
     <link rel="canonical" href={canonical} />
+    <link rel="sitemap" type="application/xml" href="/sitemap.xml" />
+    <link rel="alternate" type="text/plain" href="/llms.txt" title="Diffy product documentation for AI assistants" />
+    {!noindex && <script type="application/ld+json" set:html={JSON.stringify(schema).replace(/</g, '\\u003c')} />}
     <link rel="icon" type="image/png" href="/favicon.png" />
     <link rel="preload" href="/fonts/commit-mono.woff2" as="font" type="font/woff2" crossorigin />
     <meta property="og:type" content="website" />

diff --git a/site/src/pages/404.astro b/site/src/pages/404.astro
@@ -1,6 +1,6 @@
 ---
 import Page from '../layouts/Page.astro';
 ---
-<Page title="Page not found — Diffy">
+<Page noindex title="Page not found — Diffy">
   <main id="main" class="download-page frame"><h1>Nothing to diff here.</h1><p class="intro">This page doesn’t exist.</p><a class="button" href="/">Back to Diffy ↗</a></main>
 </Page>
diff --git a/site/src/pages/index.astro b/site/src/pages/index.astro
@@ -1,6 +1,7 @@
 ---
 import Page from '../layouts/Page.astro';
 import Mascot from '../components/Mascot.astro';
+import { summary, questions } from '../data/product';
 import { platforms, price } from '../data/releases';
 import { getImage } from 'astro:assets';
 import screenshot from '../../public/diffy.webp';
@@ -13,16 +14,15 @@ if (checkout) {
   if (url.protocol !== 'https:' || url.hostname !== 'checkout.dodopayments.com') {
     throw new Error('DODO_CHECKOUT_URL must be an HTTPS Dodo hosted checkout URL.');
   }
-  url.searchParams.set('redirect_url', 'https://diffy.hitslop.com/thanks');
+  url.searchParams.set('redirect_url', new URL('/thanks', Astro.site).href);
   purchaseUrl = url.href;
 }
 ---
-<Page>
+<Page applicationSchema>
   <main id="main">
     <section class="hero frame" aria-labelledby="hero-title">
-      <h1 id="hero-title" class="visually-hidden">Diffy — i literally only show you diffs</h1>
       <Mascot />
-      <p class="intro">A native Git diff viewer, built in Rust.</p>
+      <h1 id="hero-title" class="intro">Diffy — a native Git diff viewer, built in Rust.</h1>
       <p class="agent-line">Keep up with your agents’ changes.</p>
       <ul class="hero-badges" aria-label="Highlights">
         <li>Freakishly fast</li>
@@ -45,6 +45,7 @@ if (checkout) {
     </figure>
     <section class="features frame" aria-labelledby="features-title">
       <h2 id="features-title">A few things it does.</h2>
+      <p class="product-summary">{summary}</p>
       <dl>
         <div class="feature-row">
           <dt>Keep your worktrees together.</dt>
@@ -87,5 +88,10 @@ if (checkout) {
         </div>
       </dl>
     </section>
+    <section class="features questions frame" aria-labelledby="questions-title">
+      <h2 id="questions-title">Before you download.</h2>
+      {questions.map(({ question, answer }) => <section class="product-question"><h3>{question}</h3><p>{answer}</p></section>)}
+      <p class="product-summary"><a href="/downloads">Downloads and installation ↗</a></p>
+    </section>
   </main>
 </Page>
diff --git a/site/src/pages/llms-full.txt.ts b/site/src/pages/llms-full.txt.ts
@@ -0,0 +1,6 @@
+import type { APIRoute } from 'astro';
+import { productMarkdown } from '../data/product';
+
+export const GET: APIRoute = ({ site }) => new Response(productMarkdown(new URL('/', site).href), {
+  headers: { 'Content-Type': 'text/plain; charset=utf-8' },
+});
diff --git a/site/src/pages/llms.txt.ts b/site/src/pages/llms.txt.ts
@@ -0,0 +1,7 @@
+import type { APIRoute } from 'astro';
+import { summary, source } from '../data/product';
+
+export const GET: APIRoute = ({ site }) => {
+  const root = new URL('/', site).href;
+  return new Response(`# Diffy\n\n> ${summary}\n\nDiffy is published by hitSlop. macOS is beta; Windows and Linux are alpha. All platforms require Git.\n\n## Official documentation\n\n- [Product and features](${root}): What Diffy does and its current capabilities.\n- [Downloads and installation](${new URL('/downloads', root)}): Requirements, availability, and installation for each platform.\n- [Complete product documentation](${new URL('/llms-full.txt', root)}): Plain-text features, limitations, pricing, and platform facts.\n- [Source code](${source}): The official MIT-licensed repository.\n`, { headers: { 'Content-Type': 'text/plain; charset=utf-8' } });
+};
diff --git a/site/src/pages/sitemap.xml.ts b/site/src/pages/sitemap.xml.ts
@@ -0,0 +1,5 @@
+import type { APIRoute } from 'astro';
+
+export const GET: APIRoute = ({ site }) => new Response(`<?xml version="1.0" encoding="UTF-8"?>\n<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">\n${['/', '/downloads'].map(path => `  <url><loc>${new URL(path, site)}</loc></url>`).join('\n')}\n</urlset>\n`, {
+  headers: { 'Content-Type': 'application/xml; charset=utf-8' },
+});