notebooklm.google.com draws its headings in Google Sans Flex and its body text in Google Sans. It uses 2 fonts in all. We measured it on November 4, 2026.
The fonts notebooklm.google.com draws
| Font | Used for | Share of its custom-font text | Licence | How common |
|---|---|---|---|---|
| Google Sans Flex | Headings | 62.8% | Open source | 5 of 845 sites (rank =24) |
| Google Sans | Body text | 37.2% | Open source | 6 of 845 sites (rank =21) |
Share is how much of the page’s custom-font text each font draws. System fonts and icon fonts are never counted. Each site was opened twice in a real browser and Chrome was asked which font file drew each piece of text. We count a font for a site only if both runs saw it and it drew at least 2% of the site’s custom-font text. The full method.
Can I use the same fonts?
- Google Sans Flex is open source and free to use, including commercially. Get it from Google Fonts.
- Google Sans is open source and free to use, including commercially. Get it from Google Fonts.
notebooklm.google.com among ai sites
notebooklm.google.com is one of the 62 ai sites we measured. Across them, Inter is the most used font you can get, on 10 of the 62 (16%). All the fonts ai sites use.
What pairing does notebooklm.google.com use?
Google Sans Flex for headings with Google Sans for body text does not repeat on another analyzed site, so there is no shared pairing to show. Pairings that do repeat.
Other ai sites we measured
- deepmind.google Google Sans Flex
- gemini.google.com Google Sans Flex
- ai21.com Aeonik, Söhne, Inter
- anthropic.com Anthropic Sans Text, Anthropic Serif Text
- anyscale.com Geist Mono, Geist
- assemblyai.com UN 11 ST, Oceanic Text
See the fonts on all 845 sites.
FAQ
What font does notebooklm.google.com use?
notebooklm.google.com draws its headings in Google Sans Flex and its body text in Google Sans. It uses 2 fonts in all: Google Sans Flex, Google Sans. We measured it on November 4, 2026.
Is Google Sans Flex free?
Yes. Google Sans Flex is open source and free for commercial use, according to Google Fonts.
What font pairing does notebooklm.google.com use?
Google Sans Flex for headings and Google Sans for body text. It does not repeat on another analyzed site.
Can I use the same fonts as notebooklm.google.com on my own site?
Only if the licence allows it. Free and open-source fonts can be used freely. Commercial fonts need your own licence, even though you can see the file on notebooklm.google.com. Each font's licence is on this page, from its source.
How do you know which font notebooklm.google.com uses?
We opened notebooklm.google.com in a real browser and asked Chrome which font file drew each piece of text, twice in separate sessions. A font counts only if both runs saw it and it drew at least 2% of the site's custom-font text.
Can I check a different website?
Yes. Paste its address into the free font finder.