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DiffiCat – Website Migration QA

Check a website migration before you switch DNS. DiffiCat compares an original site (Site A) with its migrated or staging copy (Site B) page by page: pages that exist on A but are missing on B, text and content that changed, and visual regression from full-page screenshots. Use `discover_pages` to list a site's pages from its sitemap, robots.txt or a crawl and map them onto the new site. Use `capture_screenshot` for a full-page PNG of one URL. Use `start_comparison` for a full job, then `wait_for_comparison` and `get_report` for a structured report with per-page results and severities. It supports HTTP basic auth for staging sites and a callback URL when a job ends. No account or signup. Paid tools are charged per call in USDC on Base, or from a prepaid key topped up by card: discovery $0.05, screenshot $0.02, comparison $0.02 per page. Status, report, screenshot and balance reads are free, and one single-page comparison per day is free.

First seen 2 Oct 2026. Evidence as of 5 Oct 2026.