The RiazHub Image Shadow Generator & Elevation Studio is an advanced, privacy-first, client-side graphic engine designed to transform flat images and transparent PNG cutouts into studio-grade visual assets. Unlike standard CSS box-shadow generators that are confined to rectangular bounding boxes, this tool features intelligent Alpha-Aware Contour Sniffing, accurately tracing the organic silhouettes of transparent cutouts, e-commerce products, logos, and UI components.

Choose between five distinct lighting topologies: Soft Diffuse Drop Shadows for modern card elevation, Realistic 3D Ground Cast Shadows with affine perspective shearing and ambient occlusion contact layers, Floating Device Elevation Glows for SaaS hero shots, Hard-Edge Retro Comic Block Shadows for neo-brutalist pop designs, and Inset Depth Bevels. Fine-tune light angle azimuth, distance, blur radius, ground stretch, and shadow opacity in real time with an interactive canvas workspace, then export production-ready CSS snippets (box-shadow or filter: drop-shadow) or download high-resolution 32-bit transparent PNGs with baked shadows 100% processed locally in your browser with zero server uploads.

✨ Universal 2D & 3D Shadow Studio

Universal Image Shadow Generator & Elevation Studio

Cast realistic 3D floor cast shadows, diffuse multi-layer drops, and neon glows behind photos and transparent cutouts with zero clipping and 100% in-browser privacy.

Shadow Topology

☁️ Soft Ambient Drop

Light Source & Elevation

💡 135° • Dist: 24px

Envelope Auto-Padding

📐 +30px [Zero Clip]

Engine & Security

⚡ 100% In-Browser 2D

🎯 Instant Studio Lighting Presets: Click to apply preset physics

🛍️ E-Commerce 3D Floor 💻 SaaS Window Elevation 🪐 Floating Device Disc 🔮 Cyberpunk Neon Glow 💎 Inset Bevel & Rim 🕶️ Pop-Art Comic Block

📁

Drag & drop image(s) or click to browse

Supports PNG cutouts, WebP, JPG, AVIF, SVG (up to 100+ items)

📋 Paste Clipboard 🧪 Load Sample Cutout

Shadow Topology

☁️ Soft Drop 📐 3D Ground 🪐 Floating Disc 🔮 Elevation Glow 💎 Inset Bevel 🕶️ Retro Hard

Lighting & Spatial Geometry

Light Direction Angle 135°

Elevation Distance 24px

Shadow Blur Radius 32px

Shadow Opacity 45%

3D Perspective Plane Physics

Ground Perspective Shearing 15°

Ground Plane Compression 35%

Depth Fadeout Gradient 65%

Shadow Pigment & Occlusion

Shadow Color

Add Contact Shadow (Ambient Occlusion Anchor)

Canvas Backdrop & Envelope

Canvas Background Mode

Transparent Alpha (Checkerboard) Solid Matte Color Subtle Radial Studio Glow

Backdrop Color

Auto-Padding Margin (Zero Clip) 30px

Output Format & Quality

Export Format

PNG (Lossless 32-bit Alpha) WebP (Modern Alpha & Compact) JPEG (Flattened Solid Matte)

Compression Quality 95%

Filename Suffix

⚡ Apply Shadow to All Batch

🔄 Reset 🗑️ Clear

🎨 Live Stage ↔️ Before / After 💻 CSS Generator 📦 Batch Queue (0)

☀️

Ready

Original (Flat)

Elevated (Shadow)

↔

1. CSS filter: drop-shadow() (Conforms to Transparent Cutouts & PNGs) Copy

filter: drop-shadow(17px 17px 32px rgba(0, 0, 0, 0.45));

2. CSS box-shadow (Ideal for Rectangular Cards & Windows) Copy

box-shadow: 17px 17px 32px 0px rgba(0, 0, 0, 0.45);

3. Multi-Layer High-End Ambient Occlusion Stacking Copy

/* Dual-layer realistic elevation */
box-shadow: 
  0 2px 4px rgba(0, 0, 0, 0.25),
  17px 17px 32px rgba(0, 0, 0, 0.45);

Thumbnail	Filename	Dimensions	Style	Action
No batch images loaded. Drag and drop multiple files to populate queue.

⬇️ Download Shadowed Image 📦 Download Batch as ZIP 📋 Copy Image 💻 Copy CSS Code

💡 How Does Alpha-Aware Contour Sniffing Differ from Standard CSS Box Shadows? ▼

Standard CSS box-shadow only generates shadows around the rectangular perimeter bounding box of an HTML element. When dealing with transparent product photos, e-commerce sneaker cutouts, or isolated subject PNGs, this results in an unnatural rectangular dark box. Alpha-Aware Contour Sniffing traverses individual pixel alpha channels using HTML5 Canvas source-in compositing to cast smooth shadows that hug the silhouette contours of the subject.

📐 The Mathematics Behind 3D Ground Cast Shadows & 2D Affine Shearing ▼

To simulate realistic horizontal floor projections without demanding heavy 3D WebGL runtimes, this tool executes a mathematical affine 2D shearing matrix:
[x', y'] = [x - y * tan(φ), y * s_y]
The subject's alpha mask is projected onto the virtual ground plane, compressed vertically by s_y, sheared sideways according to the sun angle φ, and softened with directional linear fadeout gradients to model real-world inverse-square light dissipation.

🪐 What Are Floating Contact Discs and Inset Bevel Shadows? ▼

Floating Contact Disc: Simulates ambient occlusion contact puddles cast by levitating tech devices, gadgets, or UI cards directly onto a virtual floor plane below with adjustable levitation gap and ambient depth anchoring.

Inset Bevel & Rim: Uses inverse contour alpha subtraction (destination-out) to produce tactile embossed rims, beveled glass boundaries, and inner dimensional edge shadows that give cutouts tactile substance.

🛡️ 100% Client-Side Privacy Guarantee & Performance Safety ▼

All pixel operations, rasterizations, alpha conversions, and ZIP packaging occur entirely within your local web browser using native Canvas 2D contexts and in-memory binary streams. No photographs, proprietary graphics, or client assets are ever uploaded to RiazHub servers, ensuring total privacy and zero latency.

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