WebCacheWarmer

WebCacheWarmer is a native macOS developer tool that crawls your website to warm its page cache, then verifies cache effectiveness by measuring response times before and after caching. HOW IT WORKS WebCacheWarmer performs a two-pass crawl. The first pass ("warming") visits every page to trigger cache generation and measures cold response times. The second pass ("verifying") re-visits the same pages to measure cached response times. You get a clear before-and-after comparison showing exactly how much your caching layer improves performance. KEY FEATURES - Two-phase cache warming and verification with configurable crawl depth and concurrency - Real-time statistics: pages crawled, errors, average cold/warm response times, overall improvement percentage, and cache hit rate - CMS detection for WordPress, Drupal, Shopify, TYPO3, Magento, and 10+ other platforms - Automatic sitemap discovery from robots.txt with sitemap viewer and XML export - Cache header analysis: Cache-Control, X-Cache, CF-Cache-Status, Age, ETag, Varnish, LiteSpeed - HTTP status code breakdown to quickly identify 404s, 5xx errors, and redirect issues - Performance chart showing the top pages ranked by cold response time - Export results to CSV, Excel (XLSX), or JSON with full cache header details - Batch URL import for crawling specific page lists - Scheduled re-crawling at 1, 4, 12, or 24 hour intervals - URL inclusion and exclusion filters with glob pattern support - robots.txt compliance with crawl-delay support - Static site downloader for creating offline copies with resume and incremental mode - Built-in web preview for downloaded static sites - Favourite URLs and crawl history for quick access - Light, Dark, and System appearance modes - Drag-and-drop URL input - macOS notifications on crawl completion BUILT FOR MAC WebCacheWarmer is a native SwiftUI application with no external service dependencies. All crawling happens directly from your Mac. Your data stays local — nothing is sent to third-party servers. WHO IS IT FOR? - Web developers testing cache configurations - Site administrators monitoring cache hit rates across pages - DevOps teams verifying CDN and reverse proxy setups - SEO professionals auditing site performance and response codes - Anyone who wants to pre-warm a site's cache before a traffic spike