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Image Blender

Let learners blend between multiple images to reveal change over time.

Best for: transformations, progressions, visual discovery.

Build Interactive Image Overlay Activities for Visual Analysis Training

Build Interactive Image Overlay Activities for Visual Analysis Training

Two images side by side don't reveal the story between them. Building an interactive blend or overlay in Storyline means slider variables, layer opacity controls, and custom JavaScript — a development rabbit hole for one visual interaction.

The Image Blender lets you upload two images, configure the blend control, and export a single HTML file you embed in Articulate Rise, Storyline, Captivate, Canvas, Moodle, or any LMS that accepts HTML.

Learners control the blend and reveal hidden relationships, procedural changes, or layered data in real time.

Use it for medical imaging progressions, environmental change analysis, design evolution, and technical documentation.

How To Use the Generators



Each tool in the eLearningDesign.org ecosystem follows a streamlined, three-step workflow designed to keep you focused on instructional strategy while we handle the technical execution.


  1. Input Your Content: Open the Content tab to add your learning prompts, interactive options, and coaching feedback. This is where you build the logic and instructional heart of your activity.

  2. Customize Your Design: Switch to the Design tab to align the tool with your course aesthetic. You can manually adjust colors, typography, and layout structures to ensure a seamless visual fit.

  3. Generate and Embed: Go to the Generate tab to finalize your tool. Click "Copy Embed Code" for your authoring tool's HTML block, or "Download as HTML" for local hosting and offline use.

Common Use Cases


  • Change Over Time: Create a dynamic "before and after" interaction to show historical progress, construction development, or a person's transformation after completing a program.

  • Complex System Layers: Reveal the intricate internal components of a machine, a human body, or a building by blending a technical schematic over a realistic photo.

  • Data in Context: Overlay a performance heatmap, statistical chart, or a site map directly onto its corresponding visual subject (like a product, region, or blueprint) to connect data with reality.

Technical Specifications


  • Visual Interface for Code: Focus on the images and what changes between them while the generator handles the blend slider and transition overlay.

  • Fixed-Frame Optimization: Built to hold its layout inside iframes and web objects in Rise 360 and Storyline.

  • WCAG Friendly: Includes keyboard navigation support so the activity stays accessible.

  • Brand-Consistent Palette: Fully customizable colors and fonts so the tool matches any corporate, educational, or organizational identity.

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