In the fast-paced world of tech, plain text is becoming “old fashioned.” Today’s learners are visual-first; they don’t just want to read about a concept—they want to see it. As the old adage goes: “A picture is worth a thousand words.” 
Traditionally, developers and bloggers relied on basic tools like MS Paint or complex design software to create infographics. The result? Hours of wasted time and visuals that often looked amateur.
The game has changed. By combining Gemini’s “Thinking” mode with its advanced image generation (Nano Banana), you can now transform complex articles, URLs, or even YouTube videos into stunning, professional-grade infographics in seconds.
Why This Matters for Tech Content
Visual summaries (or “sketchnotes”) help bridge the gap between complex documentation and quick comprehension. Whether you are summarizing a blog post or a tutorial, this workflow ensures your content is:
- Engaging: High-fidelity visuals grab attention.
- Efficient: Create in minutes what used to take hours.
- Versatile: Works for URLs, YouTube videos, and raw text.
Step-by-Step: Turning a Blog Post into an Infographic
In this guide, we will use a real-world example: The Future of Dev: 7 AI Tools That Build Your App from a Prompt.
Follow these steps precisely to get the best results:
Step 1: Access Gemini
Log in to your Gemini account with your credentials. Ensure you are ready to use the latest features.
Step 2: Summarize with “Thinking” Mode 
To get a high-quality visual, the AI first needs to deeply understand the content. We will use the Thinking mode to analyze the URL.
Prompt: > “Summarize the text from the given URL: https://shdhumale.wordpress.com/2025/09/26/the-future-of-dev-7-ai-tools-that-build-your-app-from-a-prompt/. Make sure the audience is software developers. Keep the ‘Thinking’ mode on for deep analysis.”
Step 3: Generate the Sketchnote 
Once Gemini provides the summary, use the following “Master Prompt” in the same chat to trigger the image generation tool.
The Visual Prompt:
“Create a hand-drawn sketchnote visual summary of these notes. Use a pristine white paper background (no lines). The art style should be ‘graphic recording’ or ‘visual thinking’ using black ink fine-liners for clear outlines and text. Use colored markers (specifically teal, orange, and muted red) for simple shading and accents. Center the main title in a 3D-style rectangular box. Surround the title with radially distributed simple doodles, business icons, stick figures, and graphs that explain the concepts. Use arrows to connect ideas. The text should be distinct, handwritten, all-caps printing, legible, and organized like a professional brainstorming session. Aspect ratio 16:9.”
Beyond URLs: Text and YouTube
The beauty of this workflow is its flexibility. You aren’t limited to blog posts!
| Input Source | Action |
|---|---|
| YouTube Video | Paste the video link and ask Gemini to “Summarize the key takeaways from this video” before running the visual prompt. |
| Documentation | Paste long-form technical docs to get a “Cheat Sheet” style infographic. |
| Meeting Notes | Turn your messy brainstorms into a professional visual summary for the team. |
Final Pro-Tip
Always ensure your initial summary is concise. The cleaner the text output from Step 2, the more organized and legible your final infographic will be in Step 3.
