Transparent & Overlay Hover
Transparent and overlay hover effects allow you to display image titles, descriptions, and buttons over thumbnails with a semi-transparent background.
This effect improves readability while keeping the image visible underneath.
Robo Gallery supports overlay styling in both:
- Classic Gallery
- Fusion Gallery
Classic Gallery – Transparent Hover Setup
Go to:
THUMBS → Hover Options
Make sure:
Hover Mode → Options
Step 1 — Set Background Overlay Color
Adjust:
Bg Color
Example:
rgba(0, 0, 0, 0.5)
This creates a dark transparent overlay.

The last value in rgba() controls transparency:
- 0 = fully transparent
- 1 = solid color
- 0.4–0.7 = recommended overlay range
Step 2 — Customize Hover Colors
Under Text colors and Highlight options, configure:
- Hover Title Color
- Hover Description Color
- Hover Background Color
- Highlight Title
- Highlight Description

Creating a Light Overlay
Example:
rgba(255, 255, 255, 0.6)
This produces a soft white overlay.
Best used with dark text colors.
Fusion Gallery – Overlay Hover Styling
Go to:
THUMBS → Hover Effect

Fusion templates like:
- Lily
- Sadie
- Zoe
already include overlay effects.
Adjust Background Transparency
Inside:
Highlight options
and
Text colors
you can modify:
- Hover Background Color
- Highlight Title
- Highlight Description
- Text opacity

Example dark overlay:
rgba(0, 0, 0, 0.71)
Example light overlay:
rgba(255, 255, 255, 0.67)
Hover Invert Option
You can enable:
Hover Invert → Enable
This switches text/background contrast for stronger visual emphasis.
Mobile Considerations
In Classic:
No Hover for Mobile → On
Hover effects can be disabled for mobile devices where hover interaction is limited.
Best Overlay Combinations
Dark Theme Overlay
- Bg Color: rgba(0, 0, 0, 0.6)
- Title: #ffffff
- Description: #dddddd
Light Theme Overlay
- Bg Color: rgba(255, 255, 255, 0.6)
- Title: #000000
- Description: #333333
Transparent vs Solid Hover
| Type | Effect |
|---|---|
| Transparent | Image remains visible under text |
| Solid | Fully covers image |
| Highlight | Adds color block behind text only |
When to Use Overlay Hover
- Portfolio galleries
- Product showcases
- Travel galleries
- Editorial layouts
Overlay hover keeps the layout clean while providing contextual information on interaction.
Transparent hover effects give your gallery a modern and professional look without overwhelming the visual content.