What is IDX?
IDX (Internet Data Exchange) lets you display MLS listings on your site. Modern IDX uses the RESO Web API to pull real-time data directly — no clunky iframes.
Why iframe IDX hurts you
- Listings load in a slow embedded frame with spinners
- Search engines often can’t index iframe content
- The experience feels bolted-on, not part of your brand
The modern way: native RESO Web API IDX
- Direct, real-time MLS data — no iframes
- Server-rendered listing pages crawlers can read
- Instant load, your branding end to end