Nano Banana 2.1 Prompt Helper

Build, edit, copy, and save image prompts. Includes 8 templates for product photos, posters, illustrations, and photo edits.

Create clearer image prompts with Nano Banana 2.1 Prompt Helper, a lightweight Chrome extension for planning product photos, posters, illustrations, social graphics, and reference-image edits. BUILD A USEFUL PROMPT IN CHROME Choose from eight practical templates, then add the subject, setting, lighting, visual style, exact text, and details you want to preserve. The prompt updates as you type, while direct editing lets you refine the final wording in your own voice. Use the extension to: • Start with templates for studio products, lifestyle scenes, event posters, social media graphics, editorial art, character art, background replacement, and photo relighting • Copy a finished prompt in one click • Save up to 100 named prompts on your device • Search, reuse, edit, or delete saved prompts • Restore your latest draft when the popup reopens • Build and organize prompts offline without an extension account FROM PROMPT TO IMAGE When your brief is ready, continue with the companion Nano Banana 2.1 image generator at https://nanobanana-21.app. Paste the prompt, choose text-to-image or reference-photo editing, select your model and output settings, and generate on the website. The website supports creative workflows across the model family, including Nano Banana 2 and Nano Banana Pro. You can use the same brief to explore different model options for product photography, marketing visuals, posters with exact wording, illustration concepts, and focused photo edits. Available website settings include multiple aspect ratios, JPG or PNG output, and 1K, 2K, or 4K resolution options for supported models. These image models are part of the Google Gemini ecosystem, but the extension does not call Google Gemini or generate images inside Chrome. Its purpose is to help you prepare and reuse stronger prompts. Image generation happens separately on nanobanana-21.app and requires a website account and credits. A PRIVATE, LOCAL PROMPT WORKSPACE Your current draft and saved prompts stay in chrome.storage.local in your Chrome profile. The extension does not upload prompts, read browsing history, inspect websites, use analytics, or run advertising trackers. It requests only the storage permission needed to restore your work. Website links open only when you click them. Your prompt is not added to the URL or automatically transferred to the website. Copy it when you are ready, then paste it into the generator yourself. WHO IT IS FOR This prompt helper is useful for designers, marketers, shop owners, content creators, and anyone who wants a repeatable way to turn an image idea into a structured brief. Instead of rebuilding instructions from scratch, you can keep the subject, composition, lighting, text, exclusions, and preservation details organized before spending credits on generation. This prompt helper is a companion extension for nanobanana-21.app. It is not affiliated with or endorsed by Google.