Harbor Podcast Studio migrated to a new CMS without prerendering. Six months later, organic traffic sat at 14% of pre-migration levels. Three other vendors had tried to fix it. This is how UpRender finally did.
A migration that broke discoverability — at scale.
Harbor moved its 22,000-URL site to a new headless CMS without a prerendering layer in place. The migration itself was clean on the surface. Underneath, every page Googlebot tried to crawl came back as an empty shell.
Six months later, non-brand organic was down 86%. The C-suite was escalating. Three vendors had tried and failed to recover it.
Deploy. Recache. Recover.
UpRender deployed in two weeks. The team did a full historical recrawl, served clean HTML to every bot, and let Google work through the backlog.
No engineering changes to the frontend. No CMS modifications. Just a clean rendering layer at the edge.
Past baseline, and still climbing.
Four months in, traffic was at 621% of its lowest point — and ahead of the pre-migration baseline. UpRender is now deployed across six of Harbor's portfolio sites.
- 621% organic traffic recovery in four months
- Outperformed pre-migration baseline
- Now used across 6 sites in the portfolio
What rendering looks like from here.
What started as a recovery project became a portfolio standard. Harbor now treats rendering infrastructure as a precondition for every site launch, not an afterthought.
