Instagram Carousel

Instagram Carousel Generator

Generates fully self-contained, swipeable HTML carousels where every slide is designed to be exported as an individual 1080×1350px PNG for Instagram.

Step 1: Collect Brand Details

Before generating, ask the user for the following (if not already provided):

1. Brand name — displayed on first and last slides
2. Instagram handle — shown in the IG frame header
3. Primary brand color — hex code, or describe and Claude picks one
4. Logo — SVG path, brand initial, or skip
5. Font preference — see typography table below, or specific Google Fonts
6. Tone — professional, casual, playful, bold, minimal, etc.
7. Images — profile photo, screenshots, product images, etc.
8. Idioma dos slides — default: Português (BR) unless specified otherwise
9. Carousel format — standard (7 slides) or alternate sequence (see sequences section)

If the user provides a website URL or brand assets, derive colors and style from those.

If the user says "make me a carousel about X" without brand details, ask before generating. Don't assume defaults.

Handling User-Provided Images

This section applies from the very first HTML generation — not only during export.

When the user provides an image file path (e.g., /home/user/gestante.png, /mnt/user-data/uploads/foto.jpg):

⚠️ Critical Rules

1. NEVER use relative paths (gestante.png) — they break in every browser context except the exact folder the HTML lives in.
2. NEVER use `background: url(filepath)` — leads to 1.5MB+ base64 inline strings that crash the browser parser.
3. ALWAYS embed as base64 `data:` URI — works in preview, export, and any environment.
4. ALWAYS generate the HTML via Python (Path.write_text()) — shell heredocs interpolate $ and backticks, corrupting base64 strings.

Step-by-step: embed an image

# 1. Check the actual file format (extension may lie)
file /path/to/image.png

import base64
from pathlib import Path

# 2. Read and encode
img_path = Path("/path/to/image.png")
# Use "image/jpeg" if `file` command says JPEG, else "image/png"
mime = "image/jpeg"  # or "image/png"
b64 = base64.b64encode(img_path.read_bytes()).decode()
data_uri = f"data:{mime};base64,{b64}"

# 3. Inject into HTML template as a Python variable — never via shell
html = f"""
<div style="position:relative;width:100%;height:100%;">
  <img src="{data_uri}"
       style="position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;">
  <div style="position:absolute;inset:0;background:rgba(255,255,255,0.35);z-index:1;"></div>
  <!-- slide content goes here, z-index:2 -->
</div>
"""

Path("/home/claude/carousel.html").write_text(html, encoding="utf-8")

Image as slide background (most common use)

<!-- Inside the slide div, before any content -->
<img src="{data_uri}"
     style="position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;">
<!-- Semi-transparent overlay so text stays readable -->
<div style="position:absolute;inset:0;background:rgba(255,255,255,0.35);z-index:1;"></div>
<!-- All slide content must have z-index:2 or higher -->

For dark slides, use rgba(0,0,0,0.45) as the overlay instead.

Common image mistakes to avoid

Step 2: Derive the Full Color System

From the user's single primary brand color, generate the full 6-token palette:

BRAND_PRIMARY   = {user's color}                    // Main accent — progress bar, icons, tags
BRAND_LIGHT     = {primary lightened ~20%}           // Secondary accent — tags on dark, pills
BRAND_DARK      = {primary darkened ~30%}            // CTA text, gradient anchor
LIGHT_BG        = {warm or cool off-white}           // Light slide background (never pure #fff)
LIGHT_BORDER    = {slightly darker than LIGHT_BG}    // Dividers on light slides
DARK_BG         = {near-black with brand tint}       // Dark slide background

Rules for deriving colors:

• LIGHT_BG: tinted off-white complementing the primary (warm → warm cream, cool → cool gray-white)
• DARK_BG: near-black with subtle brand tint (warm → #1A1918, cool → #0F172A)
• LIGHT_BORDER: always ~1 shade darker than LIGHT_BG
• Brand gradient: linear-gradient(165deg, BRAND_DARK 0%, BRAND_PRIMARY 50%, BRAND_LIGHT 100%)

Step 3: Set Up Typography

Based on the user's font preference, pick a heading font and body font from Google Fonts.

Font size scale (fixed across all brands):

• Headings: 28–34px, weight 600, letter-spacing -0.3 to -0.5px, line-height 1.1–1.15
• Body: 14px, weight 400, line-height 1.5–1.55
• Tags/labels: 10px, weight 600, letter-spacing 2px, uppercase
• Step numbers: heading font, 26px, weight 300
• Small text: 11–12px

Apply via CSS classes .serif (heading font) and .sans (body font) throughout all slides.

Slide 1 — Hook Rules

The first slide must stop the scroll in under 1 second. Prioritize these formats:

Rules:

• Never start with the brand name as headline
• Visual proof on Slide 1 whenever possible (screenshot, result, real number)
• Hook must promise value that the following slides deliver

Slide Sequences

Standard (7 slides — default)

Listicle (5–10 slides)

Use for: "X ferramentas", "X erros", "X dicas"

Tutorial (7 slides)

Comparação (5 slides)