Add an image slideshow using the Embedded Content element

Using the Embedded Content element and some HTML, you can show participants a series of images as a carousel slideshow.

Prerequisites:

Upload and host your slideshow images in the cloud (for example, on Google Drive).
Make the images publicly available.
Copy and paste the image URLs into a text editor (for example, Notepad). You will need the image URLs when you edit the code snippet.

Example

Create an Embedded Content element.

In the Embed content field, copy and paste the following code snippet:

<!-- Slideshow container -->
<div class="slideshow-container">
  <!-- Full-width images with number and caption text -->
  <div class="mySlides fade">
    <div class="numbertext">1 / 3</div>
    <img src="image_1" style="width:100%">
    <div class="text">Caption Text</div>
  </div>
  <div class="mySlides fade">
    <div class="numbertext">2 / 3</div>
    <img src="image_2" style="width:100%">
    <div class="text">Caption Two</div>
  </div>
  <div class="mySlides fade">
    <div class="numbertext">3 / 3</div>
    <img src="image_3" style="width:100%">
    <div class="text">Caption Three</div>
  </div>
  <!-- Next and previous buttons -->
  <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
  <a class="next" onclick="plusSlides(1)">&#10095;</a>
</div>
<br>
<!-- The dots/circles -->
<div style="text-align:center">
  <span class="dot" onclick="currentSlide(1)"></span>
  <span class="dot" onclick="currentSlide(2)"></span>
  <span class="dot" onclick="currentSlide(3)"></span>
</div>
<style>
/* Slideshow container */
.slideshow-container {
  max-width: 1000px;
  position: relative;
  margin: auto;
}
/* Hide the images by default */
.mySlides {
  display: none;
}
/* Next & previous buttons */
.prev, .next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  width: auto;
  margin-top: -22px;
  padding: 16px;
  color: white;
  font-weight: bold;
  font-size: 18px;
  transition: 0.6s ease;
  border-radius: 0 3px 3px 0;
  user-select: none;
}
/* Position the "next button" to the right */
.next {
  right: 0;
  border-radius: 3px 0 0 3px;
}
/* On hover, add a black background color with a little bit see-through */
.prev:hover, .next:hover {
  background-color: rgba(0,0,0,0.8);
}
/* Caption text */
.text {
  color: #f2f2f2;
  font-size: 15px;
  padding: 8px 12px;
  position: absolute;
  bottom: 8px;
  width: 100%;
  text-align: center;
}
/* Number text (1/3 etc) */
.numbertext {
  color: #f2f2f2;
  font-size: 12px;
  padding: 8px 12px;
  position: absolute;
  top: 0;
}
/* The dots/bullets/indicators */
.dot {
  cursor: pointer;
  height: 15px;
  width: 15px;
  margin: 0 2px;
  background-color: #bbb;
  border-radius: 50%;
  display: inline-block;
  transition: background-color 0.6s ease;
}
.active, .dot:hover {
  background-color: #717171;
}
/* Fading animation */
.fade {
  -webkit-animation-name: fade;
  -webkit-animation-duration: 1.5s;
  animation-name: fade;
  animation-duration: 1.5s;
}
@-webkit-keyframes fade {
  from {opacity: .4}
  to {opacity: 1}
}
@keyframes fade {
  from {opacity: .4}
  to {opacity: 1}
}
</style>
<script>
var slideIndex = 1;
showSlides(slideIndex);
// Next/previous controls
function plusSlides(n) {
  showSlides(slideIndex += n);
}
// Thumbnail image controls
function currentSlide(n) {
  showSlides(slideIndex = n);
}
function showSlides(n) {
  var i;
  var slides = document.getElementsByClassName("mySlides");
  var dots = document.getElementsByClassName("dot");
  if (n > slides.length) {slideIndex = 1}
  if (n < 1) {slideIndex = slides.length}
  for (i = 0; i < slides.length; i++) {
      slides[i].style.display = "none";
  }
  for (i = 0; i < dots.length; i++) {
      dots[i].className = dots[i].className.replace(" active", "");
  }
  slides[slideIndex-1].style.display = "block";
  dots[slideIndex-1].className += " active";
}
</script>

Edit the code snippet.
- Replace image_1, image_2, and image_3 with your image URLs.
- Replace Caption Text, Caption Two, and Caption Three with photo captions.
- If necessary, adjust the widths of the images by changing the percentage in style="width:100%".
- To add another image, copy and paste this code before :
```
  <div class="mySlides fade">
    <div class="numbertext">3 / 3</div>
    <img src="image_3" style="width:100%">
    <div class="text">Caption Three</div>
  </div>
```
  If you add another image to the slideshow, you will also need to add a new line (<span class="dot" onclick="currentSlide(4)"></span>) to this part of the code:
```

<div style="text-align:center">
  <span class="dot" onclick="currentSlide(1)"></span>
  <span class="dot" onclick="currentSlide(2)"></span>
  <span class="dot" onclick="currentSlide(3)"></span>
</div>
<style>
```