Version 3.2.1

Added WebSocket-based synchronization across multiple sites. When content changes on one site, all linked sitemaps update instantly within the cluster.

// Enable multi-site sync
const sync = new MultiSiteSync({
  sites: ['site-a', 'site-b', 'site-c'],
  syncInterval: 'realtime',  // 'realtime' | 'every-5m' | 'hourly'
  autoResolve: true,
});
sync.start();

Integrates an ML model that analyzes page content, link depth, and historical crawl data to automatically assign optimal priority scores to every URL in your sitemap.

Sitemaps can now be rendered at the edge via Cloudflare Workers, Vercel Edge Functions, or Deno Deploy. Eliminates cold-start latency for large sitemap requests.

New native integrations for bulk URL submission to Bing Webmaster Tools and Yandex Webmaster. Submit up to 10,000 URLs per batch.

// Submit to multiple engines at once
client.submit({
  urls: urlList,
  engines: ['google', 'bing', 'yandex'],
  batchSize: 10000,
});

New interactive dashboard that renders your sitemap as a navigable tree graph. Click any node to see indexing status, crawl date, and performance metrics.

Configurable webhook endpoints for url.added, url.indexed, url.removed, and sitemap.regenerated events. Includes retry logic with exponential backoff.

The API now supports GraphQL alongside REST. Query sitemaps, URLs, and indexing stats with a single flexible request.

Refactored the XML streaming pipeline using async generators. Sitemaps with 1M+ URLs now generate in under 8 seconds (was ~13s). Memory footprint reduced by 60%.

Enhanced validation logic for hreflang attributes now catches 15+ previously undetected edge cases, including circular references and invalid region codes.

Added exponential backoff with jitter for API calls to search engine indexing endpoints. Failed submissions now retry up to 5 times before marking as errored.

Full compatibility with Node.js 22 LTS including improved worker thread utilization and native fetch support for API calls.

Sitemap index files are now automatically gzip-compressed when served, reducing bandwidth usage by up to 75% for large index files.

All public APIs now have complete TypeScript type definitions. Generic support for custom URL objects and configuration types.

Treeshaking improvements and code splitting reduced the browser SDK bundle from 48KB to 29KB (minified + gzipped).

Resolved an issue where paginated URLs (e.g., /page/1 and ?page=1) were incorrectly deduplicated, causing valid alternate URLs to be excluded.

When resolving 301/302 redirects during crawling, the <lastmod> field now correctly reflects the final destination's modification date, not the redirect chain's first entry.

Fixed a memory leak in the crawler's URL queue that caused gradual memory growth during sessions lasting more than 4 hours. Memory now stabilizes after initial warmup.

Video thumbnail URLs containing special characters (e.g., ?, &, #) are now properly percent-encoded before XML serialization.

Google's indexing API rate limit (100 requests/day per property) is now correctly tracked and enforced across all concurrent submissions within the same project.

Resolved conflict where both plugins attempted to register the same /sitemap.xml rewrite rule, causing 404 errors on WordPress 6.5+.

Added distributed locking via Redis for scheduled sitemap regeneration tasks. Prevents duplicate regeneration when multiple server instances are running.

Fixed an XXE (XML External Entity) injection vulnerability in the custom URL processing pipeline. Malicious URLs could have triggered SSRF attacks when passed through the sitemap generator. Users upgrading from any version before 3.2.0 should upgrade immediately.

Fixed a logic flaw in the webhook configuration endpoint (/api/v2/webhooks) that allowed unauthenticated POST requests under specific conditions. All webhook configurations should be re-audited after upgrading.

The synchronous addUrl() method is deprecated. Use addUrlAsync() for non-blocking URL additions. The synchronous method will be removed in v4.0.0.