Transform rules are now available in vercel.json

T1Covered by 1 source · first reported by Vercel (blog + changelog) at 22 Jul 2025, 13:00 UTC

vercel.json You can now define transform rules into modify HTTP request and response headers or query parameters, without changing application code. Unlimited transform rules are available for all customers, and let you: This expands the flexibility of Vercel's CDN, which already supports routing…