How to Create a Before After Image Slider with CSS and JS

A before and after image slider is one of the easiest ways to show visual change. Instead of placing two images side by side, you can stack them in the same area and let users drag a handle to compare the “before” and “after” versions.

This type of image comparison slider works well for renovation projects, photo editing, product changes, website redesigns, medical visuals, beauty results, real estate improvements, restoration work, UI redesigns, and portfolio showcases.

In this guide, you will learn how to create a before after image slider with CSS and JS. You will also get a modern responsive version, a CSS-only version, mobile-friendly improvements, accessibility tips, WordPress integration options, and common fixes.

How Do You Create a Before After Image Slider?

You can create a before after image slider by placing two images on top of each other inside the same container. The “after” image stays visible in the background, while the “before” image is clipped with CSS. Then, JavaScript updates the clipped area when the user drags the slider handle.

The basic process is:

1. Add two images inside one wrapper.
2. Position both images on top of each other.
3. Use CSS clip-path to reveal part of the top image.
4. Add a range input or draggable handle.
5. Use JavaScript to update the reveal position.
6. Make the slider responsive for desktop, tablet, and mobile.

What Is a Before and After Image Slider?

A before and after image slider, also called an image comparison slider, is an interactive element that lets users compare two versions of the same image. One image usually shows the “before” state, and the other shows the “after” state.

The user drags a vertical handle from left to right to reveal more or less of each image.

For example:

• A designer can compare an old website layout with a redesigned version.
• A photographer can show an unedited photo beside the edited result.
• A real estate company can show a room before and after renovation.
• A beauty clinic can show treatment progress.
• A WordPress agency can show a website redesign.
• A product team can show changes between two UI versions.

This makes the result easier to understand because users can control the comparison themselves.

Why Use a Before After Image Slider?

A before after comparison slider is useful because it turns two static images into an interactive visual story.

Here are the main benefits:

• It helps users notice small visual differences.
• It improves engagement because users interact with the image.
• It saves space compared to showing two large images separately.
• It works well for portfolios, case studies, landing pages, and service pages.
• It makes transformation results easier to understand.
• It can improve trust when used with real project examples.

If your website depends on visual proof, a before and after slider can make your content more convincing.

What You Will Build

In this tutorial, you will build a responsive before after image slider using:

• HTML for the structure
• CSS for layout, image stacking, clipping, and styling
• JavaScript for updating the slider position
• A range input for better accessibility and keyboard support

The final slider will include:

• Responsive 16:9 layout
• Draggable comparison handle
• Mobile-friendly interaction
• Keyboard support
• Modern clip-path reveal effect
• Clean and reusable code
• Support for multiple sliders on the same page

Before You Start

You only need a few basic files:

• index.html
• style.css
• script.js
• Two images with the same size or same aspect ratio

For the best result, use two images that are aligned properly. If the two images have different angles, dimensions, or crop positions, the slider may look uneven.

Recommended image guidelines:

• Use the same width and height for both images.
• Compress images before uploading.
• Use WebP where possible.
• Add descriptive alt text.
• Keep file names SEO-friendly.

Example file names:

• kitchen-before-renovation.webp
• kitchen-after-renovation.webp
• website-redesign-before.webp
• website-redesign-after.webp

HTML Structure for the Before After Image Slider

First, create the basic HTML structure. This version uses two images and an input range slider. The range input gives users a familiar control and also makes the slider easier to use with a keyboard.

<div class="before-after-wrapper">
  <div class="before-after-slider" data-before-after style="--position: 50%;">
    <img 
      class="comparison-image comparison-image-after" 
      src="after-image.webp" 
      alt="After renovation result"
    >

    <img 
      class="comparison-image comparison-image-before" 
      src="before-image.webp" 
      alt="Before renovation result"
    >

    <input 
      class="comparison-range" 
      type="range" 
      min="0" 
      max="100" 
      value="50" 
      aria-label="Reveal before image"
    >

    <div class="comparison-line" aria-hidden="true">
      <span class="comparison-handle"></span>
    </div>
  </div>
</div>

How the HTML Works

The wrapper keeps the slider centered on the page.

The .before-after-slider element holds the two images and stores a CSS variable called --position. This variable controls how much of the before image is visible.

The after image is placed at the bottom. The before image is placed above it and clipped from the right side.

The range input controls the comparison position.

The comparison line and handle are visual elements only, so they use aria-hidden="true".

CSS for the Responsive Before After Image Slider

Now add the CSS. This code creates the layout, stacks the images, clips the before image, and styles the draggable handle.

* {
  box-sizing: border-box;
}

.before-after-wrapper {
  width: min(100%, 900px);
  margin: 40px auto;
  padding: 0 16px;
}

.before-after-slider {
  --position: 50%;

  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 18px;
  background: #f3f4f6;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
}

.comparison-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  user-select: none;
  pointer-events: none;
}

.comparison-image-before {
  z-index: 2;
  clip-path: inset(0 calc(100% - var(--position)) 0 0);
}

.comparison-image-after {
  z-index: 1;
}

.comparison-range {
  position: absolute;
  inset: 0;
  z-index: 5;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
  touch-action: pan-y;
}

.comparison-line {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--position);
  z-index: 4;
  width: 4px;
  background: #ffffff;
  transform: translateX(-50%);
  pointer-events: none;
}

.comparison-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 46px;
  height: 46px;
  border: 3px solid #ffffff;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.35);
  transform: translate(-50%, -50%);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.25);
}

.comparison-handle::before,
.comparison-handle::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 9px;
  height: 9px;
  border-top: 3px solid #ffffff;
  border-left: 3px solid #ffffff;
}

.comparison-handle::before {
  left: 12px;
  transform: translateY(-50%) rotate(-45deg);
}

.comparison-handle::after {
  right: 12px;
  transform: translateY(-50%) rotate(135deg);
}

.comparison-range:focus-visible + .comparison-line {
  outline: 3px solid #2563eb;
  outline-offset: 6px;
}

@media (max-width: 600px) {
  .before-after-wrapper {
    margin: 28px auto;
    padding: 0 12px;
  }

  .before-after-slider {
    border-radius: 14px;
  }

  .comparison-handle {
    width: 40px;
    height: 40px;
  }
}

How the CSS Works

The most important part of the CSS is this line:

clip-path: inset(0 calc(100% - var(--position)) 0 0);

This clips the before image from the right side. When --position is 50%, half of the before image is visible. When it becomes 80%, 80% of the before image is visible.

The slider uses aspect-ratio: 16 / 9, so it stays responsive without needing a fixed height.

The range input is invisible but still active. Users can drag anywhere over the slider, while the visible handle follows the range value.

JavaScript for the Draggable Image Comparison Slider

Now add the JavaScript. This script updates the CSS variable whenever the user moves the range input.

const sliders = document.querySelectorAll("[data-before-after]");

sliders.forEach((slider) => {
  const range = slider.querySelector(".comparison-range");

  function updateSlider(value) {
    const safeValue = Math.min(100, Math.max(0, Number(value)));

    slider.style.setProperty("--position", `${safeValue}%`);
    range.setAttribute(
      "aria-valuetext",
      `${Math.round(safeValue)} percent before image visible`
    );
  }

  range.addEventListener("input", (event) => {
    updateSlider(event.target.value);
  });

  updateSlider(range.value);
});

How the JavaScript Works

The script selects every slider that has the data-before-after attribute. This means you can use multiple before after sliders on one page.

For each slider, JavaScript finds the range input and listens for the input event.

When the user moves the control, JavaScript updates this CSS variable:

--position

That variable controls both:

• How much of the before image is visible
• Where the handle line appears

This keeps the code simple and easy to reuse.

Complete Before After Image Slider Code

Here is the complete code in one file. You can copy this into an HTML file and replace the image paths with your own images.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Before After Image Slider</title>

  <style>
    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: Arial, sans-serif;
      background: #f8fafc;
      color: #111827;
    }

    .page-content {
      width: min(100%, 960px);
      margin: 0 auto;
      padding: 48px 16px;
    }

    .page-content h1 {
      margin-bottom: 12px;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.1;
    }

    .page-content p {
      max-width: 720px;
      line-height: 1.7;
      color: #4b5563;
    }

    .before-after-wrapper {
      width: min(100%, 900px);
      margin: 40px auto;
    }

    .before-after-slider {
      --position: 50%;

      position: relative;
      width: 100%;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      border-radius: 18px;
      background: #e5e7eb;
      box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16);
    }

    .comparison-image {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      display: block;
      object-fit: cover;
      user-select: none;
      pointer-events: none;
    }

    .comparison-image-after {
      z-index: 1;
    }

    .comparison-image-before {
      z-index: 2;
      clip-path: inset(0 calc(100% - var(--position)) 0 0);
    }

    .comparison-range {
      position: absolute;
      inset: 0;
      z-index: 5;
      width: 100%;
      height: 100%;
      margin: 0;
      opacity: 0;
      cursor: ew-resize;
      touch-action: pan-y;
    }

    .comparison-line {
      position: absolute;
      top: 0;
      bottom: 0;
      left: var(--position);
      z-index: 4;
      width: 4px;
      background: #ffffff;
      transform: translateX(-50%);
      pointer-events: none;
    }

    .comparison-handle {
      position: absolute;
      top: 50%;
      left: 50%;
      width: 46px;
      height: 46px;
      border: 3px solid #ffffff;
      border-radius: 50%;
      background: rgba(15, 23, 42, 0.35);
      transform: translate(-50%, -50%);
      box-shadow: 0 8px 24px rgba(15, 23, 42, 0.25);
    }

    .comparison-handle::before,
    .comparison-handle::after {
      content: "";
      position: absolute;
      top: 50%;
      width: 9px;
      height: 9px;
      border-top: 3px solid #ffffff;
      border-left: 3px solid #ffffff;
    }

    .comparison-handle::before {
      left: 12px;
      transform: translateY(-50%) rotate(-45deg);
    }

    .comparison-handle::after {
      right: 12px;
      transform: translateY(-50%) rotate(135deg);
    }

    .comparison-range:focus-visible + .comparison-line {
      outline: 3px solid #2563eb;
      outline-offset: 6px;
    }

    @media (max-width: 600px) {
      .page-content {
        padding: 32px 12px;
      }

      .before-after-slider {
        border-radius: 14px;
      }

      .comparison-handle {
        width: 40px;
        height: 40px;
      }
    }
  </style>
</head>

<body>
  <main class="page-content">
    <h1>Before After Image Slider</h1>
    <p>
      Drag the handle to compare the before and after images.
      Replace the image paths with your own images to use this slider on your website.
    </p>

    <div class="before-after-wrapper">
      <div class="before-after-slider" data-before-after style="--position: 50%;">
        <img 
          class="comparison-image comparison-image-after" 
          src="after-image.webp" 
          alt="After renovation result"
        >

        <img 
          class="comparison-image comparison-image-before" 
          src="before-image.webp" 
          alt="Before renovation result"
        >

        <input 
          class="comparison-range" 
          type="range" 
          min="0" 
          max="100" 
          value="50" 
          aria-label="Reveal before image"
        >

        <div class="comparison-line" aria-hidden="true">
          <span class="comparison-handle"></span>
        </div>
      </div>
    </div>
  </main>

  <script>
    const sliders = document.querySelectorAll("[data-before-after]");

    sliders.forEach((slider) => {
      const range = slider.querySelector(".comparison-range");

      function updateSlider(value) {
        const safeValue = Math.min(100, Math.max(0, Number(value)));

        slider.style.setProperty("--position", `${safeValue}%`);
        range.setAttribute(
          "aria-valuetext",
          `${Math.round(safeValue)} percent before image visible`
        );
      }

      range.addEventListener("input", (event) => {
        updateSlider(event.target.value);
      });

      updateSlider(range.value);
    });
  </script>
</body>
</html>

How to Make the Before After Slider Responsive

A responsive before after image slider should adjust to different screen sizes without breaking the image layout.

The easiest way to do this is to avoid fixed widths and fixed heights. Instead, use:

width: 100%;
aspect-ratio: 16 / 9;
object-fit: cover;

This keeps the slider flexible. The container becomes wider or narrower depending on the screen size, while the images stay properly cropped.

You can also change the aspect ratio depending on your image type.

For landscape images:

aspect-ratio: 16 / 9;

For square images:

aspect-ratio: 1 / 1;

For portrait images:

aspect-ratio: 4 / 5;

The most important rule is this: both before and after images should use the same aspect ratio. If one image is landscape and the other is portrait, the comparison will not line up properly.

How to Add Mobile Touch Support

The version above works well on mobile because it uses an input range element. Most mobile browsers already support dragging range inputs with touch.

To improve mobile behavior, keep this CSS on the range input:

touch-action: pan-y;

This allows users to scroll the page vertically while still interacting with the horizontal slider.

Also avoid adding JavaScript that only listens for mouse events such as:

mousedown
mousemove
mouseup

That approach may work on desktop but often fails on mobile. A range input or pointer-event-based approach is better for a mobile before after image slider.

CSS-Only Before After Image Slider

You can also create a simple CSS-only image comparison slider. This version does not use JavaScript. It uses the CSS resize property so the user can drag the width of the top image.

This method is simple, but it has limitations. It is not as smooth or flexible as the JavaScript version. Still, it can work for a basic demo or a lightweight comparison block.

CSS-Only HTML

<div class="css-only-comparison">
  <img 
    class="css-only-image css-only-after" 
    src="after-image.webp" 
    alt="After website redesign"
  >

  <div class="css-only-before-wrap">
    <img 
      class="css-only-image css-only-before" 
      src="before-image.webp" 
      alt="Before website redesign"
    >
  </div>
</div>

CSS-Only CSS

.css-only-comparison {
  position: relative;
  width: min(100%, 800px);
  aspect-ratio: 16 / 9;
  margin: 40px auto;
  overflow: hidden;
  border-radius: 18px;
  background: #e5e7eb;
}

.css-only-image {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.css-only-after {
  position: absolute;
  inset: 0;
}

.css-only-before-wrap {
  position: absolute;
  inset: 0 auto 0 0;
  width: 50%;
  min-width: 40px;
  max-width: 100%;
  overflow: hidden;
  resize: horizontal;
  border-right: 4px solid #ffffff;
}

.css-only-before {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

When Should You Use the CSS-Only Version?

Use the CSS-only before after image slider when:

• You want a quick demo.
• You do not want to add JavaScript.
• You only need a simple image comparison.
• You are testing a layout concept.

Use the JavaScript version when:

• You want better control.
• You need a smoother user experience.
• You want keyboard accessibility.
• You need multiple sliders on the same page.
• You want better mobile behavior.

clip-path vs Width: Which Method Is Better?

There are two common ways to reveal the before image:

1. Change the width of the top image wrapper.
2. Use clip-path to hide part of the top image.

Both can work, but clip-path is cleaner for modern image comparison sliders.

Using Width

With the width method, you wrap the before image inside a container and change the container width as the slider moves.

Example:

.before-wrapper {
  width: 50%;
  overflow: hidden;
}

This is simple, but it can become harder to manage when you add complex layouts, animation, or responsive behavior.

Using clip-path

With the clip-path method, both images stay full size. You simply hide part of the top image.

Example:

.before-image {
  clip-path: inset(0 50% 0 0);
}

This is usually cleaner because the image stays in the same position, and only the visible area changes.

For a modern before after image slider with CSS and JS, clip-path is a strong option.

How to Add Labels to the Before After Slider

Labels help users understand which image is before and which one is after.

Add this HTML inside the slider:

<span class="comparison-label comparison-label-before">Before</span>
<span class="comparison-label comparison-label-after">After</span>

Then add this CSS:

.comparison-label {
  position: absolute;
  top: 16px;
  z-index: 6;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.72);
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  pointer-events: none;
}

.comparison-label-before {
  left: 16px;
}

.comparison-label-after {
  right: 16px;
}

Labels are especially useful for portfolios, case studies, medical visuals, interior design projects, and product comparisons.

How to Customize the Slider Handle

You can customize the handle to match your website design.

For a larger handle:

.comparison-handle {
  width: 56px;
  height: 56px;
}

For a darker handle:

.comparison-handle {
  background: rgba(0, 0, 0, 0.55);
}

For a colored line:

.comparison-line {
  background: #2563eb;
}

For a softer design:

.comparison-slider {
  border-radius: 24px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
}

Keep the handle visible. If users cannot notice the handle, they may not realize the image is interactive.

Accessibility Best Practices for Image Comparison Sliders

A before after image slider should be easy to use for all visitors, including people using a keyboard or assistive technology.

Follow these best practices:

1. Use Meaningful Alt Text

Do not write generic alt text like:

alt="before image"

Use descriptive alt text instead:

alt="Kitchen before renovation with old cabinets"

alt="Kitchen after renovation with modern white cabinets"

2. Use a Keyboard-Friendly Control

The range input allows keyboard users to move the slider with arrow keys.

<input type="range" aria-label="Reveal before image">

3. Add Visible Focus Styles

Users should be able to see when the slider control is focused.

.comparison-range:focus-visible + .comparison-line {
  outline: 3px solid #2563eb;
  outline-offset: 6px;
}

4. Avoid Text Inside the Image Only

If the image contains important text, also explain it in the page content. This helps users who cannot easily read the image.

5. Keep the Slider Simple on Mobile

Do not make the handle too small. A small handle can be hard to drag on mobile screens.

A handle size between 40px and 56px usually works well.

How to Add a Before After Image Slider in WordPress

There are two common ways to add a before after image slider in WordPress.

You can add the custom HTML, CSS, and JavaScript manually, or you can use a WordPress before after image slider plugin.

Option 1: Add the Slider Manually in WordPress

This option is best for developers or users who are comfortable editing code.

Step 1: Add the HTML

Open your WordPress page or post and add a Custom HTML block. Paste the slider HTML into that block.

Step 2: Add the CSS

You can add the CSS in one of these places:

• Appearance > Customize > Additional CSS
• Your child theme stylesheet
• A custom CSS plugin
• Your theme builder’s custom CSS area

Step 3: Add the JavaScript

You can add the JavaScript using:

• Your child theme JavaScript file
• A code snippets plugin
• Your theme’s custom code area
• A small custom plugin

Avoid placing large JavaScript directly inside every blog post. It is better to load reusable scripts properly so your site stays easier to maintain.

Option 2: Use a WordPress Before After Image Slider Plugin

If you do not want to write code, use a WordPress before after image slider plugin.

A plugin is usually better when you need:

• Multiple sliders
• Slider galleries
• Elementor support
• Gutenberg block support
• Shortcode support
• Mobile-ready layouts
• Image labels
• Custom styling options
• Video comparison
• Reusable sliders across pages

For example, WP Before After Image Slider lets WordPress users create comparison sliders from the dashboard and embed them using a shortcode, Elementor widget, or Gutenberg block.

This is a better option for non-developers, agencies, marketers, and WordPress site owners who want to publish sliders quickly without editing code.

Custom Code vs WordPress Plugin: Which One Should You Choose?

Option	Best For	Pros	Cons
HTML, CSS, and JS slider	Developers	Lightweight, flexible, full control	Requires coding
CSS-only slider	Simple demos	No JavaScript needed	Limited functionality
WordPress plugin	WordPress site owners	Easy setup, reusable, no coding	Adds plugin dependency

If you only need one custom slider and you are comfortable with code, the HTML/CSS/JS method is enough.

If you manage a WordPress website and need multiple sliders, galleries, blocks, widgets, or shortcodes, a plugin is usually the better choice.

Common Before After Slider Issues and Fixes

1. The Images Do Not Line Up

This usually happens when the before and after images have different dimensions.

Fix: Use images with the same width, height, and crop position.

2. The Slider Is Not Responsive

This often happens when the container uses a fixed pixel width.

Fix: Use width: 100%, max-width, and aspect-ratio.

.before-after-slider {
  width: 100%;
  max-width: 900px;
  aspect-ratio: 16 / 9;
}

3. The Slider Does Not Work on Mobile

This can happen when the JavaScript only uses mouse events.

Fix: Use a range input or pointer events instead of only mousedown, mousemove, and mouseup.

4. The Handle Is Not Visible

If the image is bright, a white handle may disappear.

Fix: Add a background, border, or shadow.

.comparison-handle {
  background: rgba(0, 0, 0, 0.45);
  border: 3px solid #ffffff;
}

5. The Top Image Is Not Clipping

Check whether the clip-path value is written correctly.

clip-path: inset(0 calc(100% - var(--position)) 0 0);

Also make sure the before image has a higher z-index than the after image.

6. The Slider Works Once but Not for Multiple Sliders

This happens when JavaScript uses querySelector for only one slider.

Fix: Use querySelectorAll and loop through all sliders.

document.querySelectorAll("[data-before-after]").forEach((slider) => {
  // slider logic here
});

7. The Slider Loads Slowly

Large images can slow down the page.

Fix:

• Compress images.
• Use WebP format.
• Use lazy loading where appropriate.
• Avoid uploading images larger than needed.
• Use a CDN if your site has heavy traffic.

Best Image Sizes for a Before After Slider

The best image size depends on where the slider appears.

For blog content:

• 1200 × 675 px
• 1024 × 576 px
• 900 × 506 px

For full-width landing page sections:

• 1600 × 900 px
• 1920 × 1080 px

For square comparison blocks:

• 1000 × 1000 px
• 1200 × 1200 px

The most important thing is that both images must use the same dimensions.

SEO Tips for Before After Image Sliders

If you are adding a before after image slider to a blog post or landing page, optimize it for search engines too.

Use Descriptive Image File Names

Instead of:

image1.jpg
image2.jpg

Use:

kitchen-renovation-before.webp
kitchen-renovation-after.webp

Add Helpful Alt Text

Good alt text explains what the image shows.

Example:

alt="Bathroom before remodeling with old tiles"

alt="Bathroom after remodeling with modern white tiles"

Add Supporting Text Around the Slider

Do not place the slider alone. Add a short explanation before or after it so search engines and users understand the context.

Example:

“This image comparison slider shows the kitchen before and after a full cabinet, lighting, and countertop renovation.”

Use Relevant Headings

Use headings that match search intent, such as:

• Before After Image Slider HTML CSS JavaScript
• Responsive Before After Image Slider
• CSS Only Image Comparison Slider
• Before After Image Slider WordPress
• Image Comparison Slider Code

Add Internal Links

Link to related pages using clear anchor text, such as:

• WordPress before after image slider plugin
• How to add a before after slider in WordPress
• Best before and after slider plugin
• Before after image slider for Elementor
• Before after image slider for Gutenberg

Internal links help users find related content and help search engines understand your site structure.

Where to Use Before After Image Sliders

A before and after slider can be used in many types of websites.

Web Design Portfolios

Show old and new website layouts, landing page redesigns, or UI improvements.

Photography Websites

Compare raw and edited images, color correction, retouching, and background changes.

Real Estate Websites

Show home renovation, interior staging, exterior improvements, and property restoration.

Beauty and Healthcare Websites

Show visual treatment progress, skincare results, dental results, or cosmetic improvements. Always use accurate images and avoid misleading claims.

Fitness and Wellness Websites

Show progress comparisons with proper context and realistic presentation.

Product Pages

Compare product updates, packaging changes, material improvements, or design upgrades.

WordPress Agency Websites

Show client website redesigns, speed optimization results, layout updates, and visual improvements.

Conclusion

Creating a before and after image slider using CSS and JavaScript is a straightforward process that allows you to engage your audience visually. By following the steps outlined in this article, you learned how to set up a simple slider, implement necessary code, and customize it to match your design preferences.

Now that you have a solid foundation, don’t hesitate to experiment further. Try integrating more advanced features like touch support for mobile devices, dynamic image loading, or even integrating your slider with a gallery of images. Each enhancement will not only improve your skills but also provide a richer experience for your users.

Frequently Asked Questions (FAQs)

This page was last edited on 16 June 2026, at 6:07 pm