Guides/before after image comparison widget

Before After Image Comparison Widget for Website: A Premium Before/After Slider

Use a before/after image comparison widget to show transformations: orientation, focal point alignment, handle styling, and a CLS-safe embed.

When to use a before/after image comparison widget

A before/after slider is ideal when you need visual proof:

  • Renovations and transformations
  • Photo edits and retouching
  • Design revisions (UI/UX, branding)

The key is a stable layout (no CLS) and a handle that feels good on touch.

Build it in GizmoSauce

Start here: /widgets/before-after

Open the editor: /get-widget/before-after

Upload/select your images, set aspect ratio, then embed it with Save & Get Code.

Widget editor wireframe

Image fit + focal point (why your slider may look wrong)

Most issues come from cropping.

  • Use cover for the best premium look.
  • If the subject is cut off, tune Image Position (X/Y) independently for Before and After.

This keeps the comparison meaningful without re-editing source images.

Use cases beyond renovations

Image comparison isn’t just for construction or makeovers.

Common use cases:

  • Product customization (colorways, finishes, variants)
  • UI redesigns (before/after screens)
  • Photo retouching (raw vs edited)

If your audience needs a fast “what changed?” moment, a before/after widget is a high-trust pattern.

Interaction + accessibility

Use Drag when you want a clear “grab the handle” interaction.

Use Hover compare when you want a lightweight desktop-only feel.

Make sure keyboard users can still use the slider (arrow keys/home/end).

Competitor check: what usually goes wrong

Before/after sliders are deceptively easy to ship—and many implementations miss key details.

Common issues in generic plugins:

  • No reserved height (CLS when images load)
  • Weak mobile/touch handling
  • No keyboard support
  • Styling that fights the site theme

If you’re comparing tools, prioritize CLS safety, touch UX, and accessibility—not just “it drags.”

FAQ

What aspect ratio should I use?

Pick an aspect ratio that matches your images and page layout (16:9 is a safe default). Consistent ratios prevent layout shift.

Can I change label and handle styling?

Yes. The Design tab includes presets plus fine-tuning for label colors/typography and handle colors/radius/shadows.

Does it work on mobile?

Yes—use drag interaction and ensure the widget has enough height for comfortable touch input.

Product updates

Occasional widget launches, design notes, and growth ideas. No spam.

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