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5 best Chrome extensions for NotebookLM in 2026. Real features, real pricing, honest gaps. Free options available. Find the right one for your workflow.

Upload .txt, .md, .csv, .html, and .json files to NotebookLM directly from your browser side panel — no need to open NotebookLM or leave your current tab.

Add YouTube videos to NotebookLM in one click using Kaptex's side panel — notebook selection stays across every tab, so your research flow never breaks.

Kaptex captures Reddit threads as structured text (post + top comments) and sends them to NotebookLM in one click. Works far better than pasting the URL directly.

Save Perplexity research threads to NotebookLM in one click with Kaptex — no tab switching, no copy-pasting. Keep your sources and context intact.

Kaptex adds a one-click "Save to NotebookLM" button directly on Claude. Your conversation lands in the right notebook in under 3 seconds — no tab switching required.

Save any ChatGPT conversation directly to Google NotebookLM with one click. Kaptex captures the full conversation text — not just the URL.

A complete guide to using Google NotebookLM for research — the six source types that matter most, how to solve the source capture bottleneck, and how to build a workflow that actually sticks.

Add multiple sources to NotebookLM in one action — paste a list of URLs or sweep all open tabs at once with Kaptex, without switching tabs between each save.

NotebookLM can generate a full slide deck from your notes in seconds — but the default design is generic. Here's how to go from beginner to pro using AI prompts, your brand colors, and a simple YAML trick.

NotebookLM is powerful, but adding sources constantly breaks your flow. Kaptex fixes that with one-click capture for AI chats, Reddit, YouTube, and web pages directly from your browser.