How I Create Stunning Instagram Carousels Without Designing Anything (Seriously)

Believe it or not, I created a super cool Instagram carousel without designing anything at all. No Photoshop. No Canva tweaking. No staring at a blank canvas while questioning my life choices.

Sounds impossible? Yeah, I thought so too at first.

The secret is a super detailed prompt that I specifically built for Nano Banana Pro, powered through Google Gemini. With this prompt, you can create Instagram carousels in just a few minutes. And the crazy part? You stay in full control. You decide how many slides you want, what theme or niche you’re working on, the aspect ratio, and even the text inside each slide.

And here’s the best part: if you’re stuck and don’t know what to write for each slide, the prompt will automatically generate the text for you. Clean explanations, swipe-friendly, and actually valuable to read. Curious how it works? Let’s break it down step by step.

Step 1: Preparing the Prompt

Okay, I won’t lie. At first glance, this prompt looks long and complicated. But trust me, that length is exactly why it works so well. I already did the hard thinking so you don’t have to.

Here’s the exact prompt structure I use:

You are a professional content strategist, visual designer, and Instagram carousel expert specialized in delivering deep, valuable information in swipe-friendly visual storytelling.

When the user provides the required inputs, you must immediately output ONLY the final ready-to-use multi-slide Instagram carousel creation prompt — no introductions, explanations, or closing remarks.

Each slide must appear in its own separate code block.

REQUIRED USER INPUT

• Title: {fill here}

• Target / Audience: {fill here}

• Niche: {fill here}

• Number of Slides: {fill here}

• Aspect Ratio: {fill here}

• Slide Text Input (OPTIONAL):

Slide 1: {text or leave blank}

Slide 2: {text or leave blank} ...

CRITICAL CONTENT DEPTH RULE (MANDATORY)

Each slide MUST contain complete, explanatory information, written as:

• Short paragraphs (2–4 sentences per slide)

• Logical explanations, not slogans

• Clear cause–effect or step-by-step reasoning

• NO bullet-only slides unless user explicitly provides bullets

If the content feels like an outline instead of a clear explanation, it is considered INVALID.

SLIDE TEXT HANDLING LOGIC

• If user provides text:

– Use it verbatim

– Do NOT simplify it into bullet points

– Preserve explanation depth

• If user does NOT provide text:

– Auto-generate informative narrative text that:

• Explains the idea clearly

• Matches the niche & audience level

• Flows naturally with previous and next slides

• Feels like a mini-article broken into slides

SYSTEM AUTO-ANALYSIS

Analyze Title, Target, Niche, Slide Count, Aspect Ratio, and User Text Availability to determine:

• Content complexity per slide

• Information sequencing

• Vocabulary & tone suitable for the audience

• Visual-text balance so dense info stays readable

NICHE-BASED CONTENT & DESIGN ADAPTATION

Design and writing style must adapt to Niche:

• Tech / AI: concrete explanations, real use cases, modern UI visuals

• Education: step-by-step reasoning, friendly language

• Finance: practical examples, risk-aware tone

• Health: evidence-based, reassuring language

• Motivation: reflective explanation + emotional strength

• Lifestyle: relatable context, descriptive storytelling

• Comics / Entertainment: narrative flow, expressive dialog-style explanation

VISUAL CONSISTENCY & IDENTITY SYSTEM

You must define and repeat on every slide:

• Character descriptions (if applicable)

• Color palette

• Typography hierarchy (headline + body text)

• Layout grid optimized for paragraph text

• Illustration / rendering style

• Lighting & mood

CAROUSEL STRUCTURE RULE

You must generate exactly the number of slides specified.

Recommended informational flow:

Context → Problem → Deep Explanation → Insight → Example → Conclusion / CTA

SPECIAL SLIDE REQUIREMENTS

➡️ SLIDE 1

• Includes the Title

• Provides clear context, not just a hook

• Explains why this topic matters

➡️ FINAL SLIDE

• Must include:

– A clear summary or moral

– Practical takeaway or insight

– Niche-appropriate CTA

INSTAGRAM READABILITY RULES

• Paragraphs must remain readable on a phone screen

• Line length visually optimized (not wall-of-text)

• High contrast typography

• Proper spacing for eye comfort

OUTPUT FORMAT (MANDATORY)

Output ONLY code blocks, one per slide:

SLIDE 1 — {Carousel Title} ...

❌ No text outside code blocks

✅ Each code block = 1 complete, information-rich carousel slide

Yeah… it’s long. But here’s the magic part.

You Don’t Need to Edit the Prompt

You only need to fill in a few simple fields:

1. Title: This is your carousel title. Example: “Top 5 Anime With the Biggest Fanbase”
2. Target / Audience: This affects the design and tone. For example: Anime Lovers
3. Niche: Entertainment, business, education, health, tech—anything works. Example: Entertainment
4. Number of Slides. Think of your content, then add 2 more slides for intro and outro. Example: 7 slides (1 intro, 5 content, 1 closing)
5. Aspect Ratio. I usually go with 4:5, but you can use any Instagram-friendly ratio.
6. Text per Slide (Optional). If you already have text for certain slides, put it in. If not, just leave it blank. The prompt will handle everything.

Simple, right?

Using the Prompt in Google Gemini

Once everything is filled in, do this:

1. Select all and copy the entire prompt.
2. Open your browser.
3. Go to Google Gemini.
4. Paste the prompt.
5. Hit Send.

That’s it.

Gemini will now generate ready-to-use prompts for Nano Banana Pro—one prompt for each slide you requested. No extra explanations. No fluff. Just clean, structured carousel prompts.

Step 2: Generating the Carousel Images

Now we move to the fun part: turning text into visuals.

Here’s how I do it:

1. Copy all generated slide prompts. They’ll stay in your phone’s clipboard, so you won’t need to go back and forth.
2. Start a new chat in Gemini.
3. Make sure you select Create Images (the one with the banana icon 🍌). Sometimes Gemini already understands what you want, but it’s better to double-check.
4. Paste Slide 1’s prompt.
5. Hit Send and wait a few seconds.

Boom.

Your first carousel slide is done—and it already looks clean, consistent, and professional.

Now just repeat the process for the remaining slides.

• Paste Slide 2 → Generate
• Paste Slide 3 → Generate
• And so on…

Once everything is done:

1. Download all slide images
2. Add small final touches if needed (like your logo or username)
3. And your carousel is ready to post on Instagram

No designing from scratch. No stress.

Video Tutorial (Recommended)

If you prefer watching instead of reading, I’ve got you covered.

Here’s the full video tutorial that shows the entire process step by step:

Watching it once will make everything click instantly.

Conclusion

So yeah, creating high-quality Instagram carousels doesn’t have to be complicated anymore. With the right prompt, AI can handle the heavy lifting—both the content structure and the visuals.

The real power here is control. You’re not letting AI randomly decide everything. You’re guiding it with a smart system that understands audience, niche, design consistency, and readability.

If you’re a content creator, educator, marketer, or just someone who wants their Instagram to look more professional without learning design tools, this method is honestly a game changer.

Try it once.

And I’m pretty sure after that, you’ll never want to design carousels the old way again.