Google Flow is Google's AI creative studio: you create projects, generate images with the Nano Banana models (including Nano Banana Pro, the most precise) and videos with Veo, then edit by conversation. For a print on demand creator or a KDP author, it is a very effective tool for illustrations, mockups, blog visuals and covers. The images on this blog are made with Flow. Here is how to use it and how to manage its limits.

Lire en français : Google Flow et Nano Banana : créer des visuels POD et KDP

Dark AI creative interface with a grid of generated t-shirt images and illustrations, cyan accents

Flow at a glance

Flow runs in the browser with your Google account. Everything is organized in projects: one project per collection or article, with the history of every image generated. You reach it at flow.google.com.

Several image models are available, chosen in the prompt box settings:

  • Nano Banana Pro: the most advanced, very good with detail, consistency and text in images.
  • Nano Banana 2.1 and other lighter versions: faster or cheaper in credits, perfectly good for many uses.

My method: I start with Nano Banana Pro for the important images (main illustration, cover), and switch to Nano Banana 2.1 once the Pro limit is reached or for tests.

Credits and limits

Flow runs on credits: a free allowance that refreshes, and more with Google AI subscriptions. Unused credits do not roll over. Quotas change regularly: check your balance in Flow before launching a big batch, and keep Nano Banana Pro for the images that matter.

Creating an image step by step

  1. New project: name it after your collection or article.
  2. Pick the model and the format (square, portrait, landscape).
  3. Write a complete prompt: subject, style, palette, composition, background. The rules for a good t-shirt prompt are in 30 AI prompts for t-shirts.
  4. Add a reference image if needed: your design for a mockup, your logo, a palette.
  5. Edit by conversation: "keep everything but make the background navy", "remove the text".
  6. Download the best version and file it with its prompt.
The same cat illustration edited in three successive steps by written instructions, background changing color

Practical uses for POD and KDP

  • T-shirt illustrations on a plain background, to cut out and upscale afterwards.
  • Lifestyle mockups from your design, specifying "design unchanged": see AI mockups.
  • Covers and coloring pages for your books.
  • Blog visuals and Pinterest pins in your brand colors.
  • Short videos with Veo to present a collection on social media.

Good practices

  • Keep a fixed palette in your prompts (color codes or precise names) for a consistent identity.
  • Save your winning prompts and reuse them.
  • Check the details: hands, text, merged objects.
  • Respect rights: no characters, brands or real people.
  • Images generated by Google's models carry an invisible digital watermark (SynthID) that signals their AI origin.

Frequently asked questions

Is Google Flow free?

A free credit allowance is available; Google AI subscriptions add more. Quotas change, so check your balance in the tool.

What is the difference between Nano Banana Pro and Nano Banana 2.1?

Nano Banana Pro is the most advanced model, ideal for important images. Nano Banana 2.1 is lighter and works very well for tests and secondary visuals.

Can I sell images created with Google Flow?

Check Google's terms of use for your plan and make sure the image reproduces nothing protected. Reworking the image also strengthens your personal contribution.

In short

Google Flow brings Nano Banana image generation, conversational editing and video together in one studio. Start with Nano Banana Pro for your key images, switch to Nano Banana 2.1 when Pro credits run out, and keep one project per collection so you can find all your work.

Lire en français : Google Flow et Nano Banana : créer des visuels POD et KDP