NotebookLM Code Highlighter

Name: NotebookLM Code Highlighter
Rating: 5 (2 reviews)
Author: kovalev.alex10

Adds syntax highlighting to code blocks in NotebookLM

As of June 2026, NotebookLM Code Highlighter has 42 users and a 5.00/5 rating from 2 reviews in the Productivity category.

kovalev.alex10 Productivity

Chrome Web Store ↗.crx

Users+61.5%

Rating0%

5.00

2 reviews

Reviews0%

Version

1.0.0

Manifest V3

History

9 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	26	5.00	2	1.0.0
Apr 16, 2026	27	5.00	2	1.0.0
Apr 22, 2026	27	5.00	2	1.0.0
Apr 27, 2026	28	5.00	2	1.0.0
May 4, 2026	34	5.00	2	1.0.0
May 11, 2026	36	5.00	2	1.0.0
May 20, 2026	39	5.00	2	1.0.0
May 30, 2026	42	5.00	2	1.0.0
Jun 7, 2026	44	5.00	2	1.0.0
Now	42	5.00	2	1.0.0

Permissions & access

Permissions: storage
Host access: https://notebooklm.google.com/*

Screenshots

NotebookLM Code Highlighter screenshot 1

NotebookLM Code Highlighter screenshot 2

About

NotebookLM Code Highlighter transforms plain code blocks in Google's NotebookLM into beautifully formatted, syntax-highlighted snippets.

FEATURES
• Automatic language detection for 25+ programming languages
• 6 color themes: GitHub, VS Code, and Atom One (light & dark variants)
• Line numbers for easy reference
• One-click copy button
• Respects your system's light/dark mode preference
• Adjustable max height for long code blocks

HOW IT WORKS
The extension automatically detects code blocks on notebooklm.google.com and applies syntax highlighting in real-time. You can manually override the detected language using the language picker, and your preference is remembered for that code block.

PRIVACY
This extension runs entirely in your browser. It does not collect, store, or transmit any user data. No analytics, no tracking, no ads.

OPEN SOURCE
View the source code and report issues on GitHub.