About

This is the advanced version of the standard modal generator, engineered for high-velocity development. It solves the "blank canvas paralysis" by providing 30 pre-configured architectural styles ranging from enterprise-grade forms to high-conversion marketing popups. Every preset adheres to the strict aria-modal and focus-trap standards required for WCAG compliance.

Why use this tool? Creating modal physics and visual hierarchies from scratch is error-prone. Issues like z-index wars, scroll chaining, and mobile viewport overflows are handled automatically here. Select a preset that matches your design system, tweak the variables (padding, blur, opacity), and export production-ready code instantly.

Formulas

For presets utilizing the "Glassmorphism" effect, the browser must calculate the color of every pixel behind the overlay element. The performance cost (C) is roughly proportional to the blur radius (r) and the painted area (A):

C ∝ A × r

For standard centering in our presets, we utilize a transform-less approach to avoid blurry sub-pixels on low-DPI screens, relying on Flexbox alignment:

justify-content: center; align-items: center;

Reference Data

Preset Category	Visual Characteristics	Use Case	Animation
System Native	San Francisco/Segoe UI fonts, rounded corners, slight transparency.	OS-like dialogs, Settings menus.	scale
Glassmorphism	High backdrop-filter, semi-transparent white borders.	Modern SaaS dashboards, Crypto UIs.	fade
Brutalism	No border-radius, heavy black borders (3px solid), raw shadows.	Artistic portfolios, Streetwear brands.	none
Drawers	Full height, attached to left/right edge.	Mobile navigation, Shopping carts.	slide-x
Utility/Alerts	Color-coded (Green/Red/Yellow), high contrast.	Form validation, Server errors.	shake
Marketing	Wide layout, vivid overlay colors, distinct CTAs.	Newsletter signups, Exit intent.	slide-up

Frequently Asked Questions

Select a preset from the dropdown menu. The tool automatically updates the HTML/CSS/JS fields. Copy the code into your respective files. The CSS uses unique class names to prevent conflicts.

They work in all modern browsers (Chrome, Edge, Safari). Firefox supports `backdrop-filter` by default in recent versions. For older browsers, the tool provides a solid color fallback automatically via the background-color property.

Yes. Selecting a preset simply populates the input fields (Width, Color, Radius, etc.). You can then tweak individual values before generating the code.

Some marketing presets (like "Exit Intent" or 'Newsletter') are designed to be less intrusive initially. However, in this generator, the animation triggers immediately on button click for preview purposes.