990 Crypto Price Conversion Pages — How I Built Programmatic SEO with Next.js

I just added 990 crypto/fiat price conversion pages to my dev tools site using Next.js dynamic routes and CoinGecko's free API. Every page like /price/sol-to-usd , /price/btc-to-eth , /price/doge-to-jpy has: Live price calculator Quick reference table (0.1, 0.5, 1, 5, 10, 25, 50, 100, 500, 1000 conversions) Related pair links SEO-optimized title, description, and keywords 500+ words of unique content The Setup 31 tokens (SOL, BTC, ETH, BNB, XRP, ADA, DOGE, DOT, AVAX, LINK, UNI, JUP, BONK, PEPE, SHIB + 7 fiat currencies) × 30 pairs each = 930 unique pages. The Code // app/price/[pair]/page.tsx const TOKENS = { sol : { name : " Solana " , symbol : " SOL " , coingeckoId : " solana " }, btc : { name : " Bitcoin " , symbol : " BTC " , coingeckoId : " bitcoin " }, // ... 29 more }; export async function generateMetadata ({ params }) { const { pair } = await params ; // Next.js 16 async params const { from , to } = parsePair ( pair ); return { title : ` ${ from . name } to ${ to . name } Pric