Nano Banana Hack: How to Perfectly Blend Subject and Background in Photos

Google’s Nano Banana, now integrated into the Gemini app, is making waves as one of the most popular AI photo-editing tools. From outfit swaps to exotic travel backdrops, the tool has unlocked a new level of creativity online. And now, a clever green screen trick is helping users achieve more realistic edits.

The Viral Green Screen Technique

A post by designer Martin LeBlanc (@martinleblanc) on X has gone viral, showcasing a two-step method to improve background swaps with Nano Banana.

Instead of directly replacing the background—which often creates harsh edges and mismatched lighting—LeBlanc suggests this approach:

Replace the original background with a solid green screen.

Use the green-screened image to add your desired new background.

This extra step results in smoother subject-background integration, sharper details around edges, and more natural lighting.

Why It Works

LeBlanc’s side-by-side examples prove the difference. In the traditional one-step method, a seaside portrait looked awkwardly placed against a cityscape. But with the green screen intermediate step, the same subject blended seamlessly into the new environment.

Nano Banana’s Growing Popularity

Launched as part of Google’s Gemini AI suite, Nano Banana is designed for lightweight editing tasks but has quickly become a favorite among creators. The quirky name—combining “Nano” for its model type and “Banana,” an internal codename—took off after users began sharing figurine-style 3D models under the hashtag #NanoBanana.

With hacks like the green screen method going viral, the tool continues to set new standards for AI-powered creativity, giving users professional-looking edits with just a few prompts.