Google’s underrated NotebookLM tool is about to solve your diary mess
Visual headers could organize your diaries in NotebookLM and make it easier to navigate.
Google
It seems that Google wants to give NotebookLM a makeover that could make messy projects and text-heavy notebooks more organized and visually appealing.
A new visual customization feature now in testing suggests the AI-powered tool is about to feel more personal. It will help you visually organize your notebooks and make notes, journals, and diaries easier to navigate.
According to Testing Catalog, Google is experimenting with custom banner images for individual notebooks in NotebookLM. The change would add a clear visual identity to each notebook, helping users quickly tell them apart instead of scrolling through pages that all look the same.
Google may soon allow users to customize their notebooks on NotebookLM with a banner image.
Do you have a notebook worth featuring? 👀 pic.twitter.com/5O1l4Xg8jx
— TestingCatalog News 🗞 (@testingcatalog) February 22, 2026
Upcoming customization features on Google NotebookLM
The custom banner feature will introduce a dedicated header area at the top of each notebook. Instead of the current layout, where the title is followed immediately by the source count, NotebookLM may soon separate this into a distinct header section.
In the new design, the notebook title will appear over a banner image, making it easier to identify at a glance. As shown in the image, a “Customize” button is located on the right side of the header, allowing users to add images stored on their device or in the cloud. It will give each notebook a visual cue that matches its purpose or tone.
However, it remains unclear whether users would be able to add their own banner images or if Google would let its Nano Banana AI generate visuals based on a notebook’s content.
Google is also adding more context to that header. The date the notebook was created will appear just below the title, alongside the number of sources. That small detail could help users better track older notebooks or understand when a project or diary began.
The feature is still in testing and not widely available yet. Nevertheless, if your notes or projects on NotebookLM look cluttered, this update could bring welcome clarity and a sense of order.
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