Site Migration Redirect QA

Site Migration Redirect QA checks submitted old-to-new URL mappings and produces a migration evidence report.

It accepts a public CSV with old_url,new_url columns or inline mapping pairs. The Actor follows redirect chains from each old URL, compares the final URL with the expected new URL, records chain length, query changes, HTTPS downgrade signals, final-page canonical observations, final 4xx/5xx responses, and low-confidence soft-404-like signals.

Optional monitor mode compares current scanner-visible redirect signals with the latest saved compact baseline for the same mapping set. It reports observed changes such as final URL changes, newly broken mappings, canonical changes, and redirect-chain growth. It stores redacted URLs and compact signals only, not page bodies.

This tool does not discover old URLs, crawl a full site, predict platform output, assess traffic impact, or guarantee migration outcomes. It records scanner-visible redirect mapping signals at run time.

Start with the free mapping check

Before running live HTTP checks, use the browser-only Redirect Map Validator to find duplicate sources, missing values, invalid URLs, chains, and loops in the CSV structure. The free check runs locally in the browser and does not upload the mapping or request any submitted URL.

Then inspect the fictional sample report to see the report shape, evidence fields, and limits before starting a paid run.

Example input

{
  "mappings": [
    {
      "oldUrl": "https://old.example/products/widget",
      "newUrl": "https://www.example.com/products/widget"
    }
  ],
  "maxUrls": 1,
  "maxRedirects": 5,
  "monitorMode": false,
  "saveBaseline": false
}

Replace the fictional URLs with public URLs you are authorized to check. A CSV may be supplied through mappingCsvUrl instead.

Outputs

• one dataset row per finding;
• REPORT.json with the structured report and Evidence Pack;
• REPORT.html for a readable review;
• REPORT.md for handoff or repository records.

Read the public Checksmith methodology for fail-closed input handling, severity labels, reproducibility fields, privacy boundaries, and non-certification limits.

Billing

Pay-per-event billing is based only on mapping rows where the old URL produced an HTTP response. Invalid CSV rows, invalid input, empty mappings, and DNS/connectivity failures are not charged.

Recommended launch pricing:

• site-migration-report-generated: USD 1.00 per generated redirect QA report
• site-migration-mapping-checked: USD 0.03 per checked mapping

See listing.md for the public support boundary and billing note.

Related Checksmith Actors

• Canonical/Hreflang Bulk QA checks final-page canonical and language-link signals in bulk.
• Security Headers Bulk QA checks public response-header signals after a migration.
• Social Card Bulk QA checks Open Graph and social-preview metadata on migrated pages.