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productSep 15, 2026

Faster previews are coming to Lovable.

Sophia Nabil Gustafsson

Waiting for your preview shouldn’t slow down what you’re building.

We’re starting to roll out OJ, a new preview engine built to make Lovable previews faster and more efficient, without changing how you build.

OJ is a new engine built to handle the scale and speed of Lovable, while keeping your existing projects working as they do today. In production tests, the time from opening a preview to seeing a usable app dropped from 17.4 seconds to 8.0 seconds, while previews became ready almost 5x faster.

You don’t need to configure or change anything. OJ runs underneath your preview, so as we gradually roll it out, your projects will simply open faster and react to changes more quickly.

The result: less waiting, faster feedback, and a tighter loop between building and seeing your ideas come to life.

Learn more here