The world’s leading teams create interactive content in Genially
Juxtapose two images
Step up your visual storytelling skills with eye-catching dynamic sliders.
You don’t need to know anything about CSS or HTML. Just choose the images you want to compare and voilà! Genially generates the slider for you.
Works on any device: Click or tap to move the draggable bar.
Provide extra information with interactive callouts, captions, and photo credits.
Share or embed anywhere: Make social media posts, learning resources, websites, or online catalogs engaging and user-friendly.
Show before and after changes
Help people visualize and understand how things have changed over time. Use real photos to create striking Then vs Now, Spot the Difference, or Historical vs Modern comparisons.
Work in education or training? Because they’re visual and kinesthetic, sliders can strengthen understanding, reinforce learning, and encourage students to focus on the details.
Compare any two frames: Photos, illustrations, graphics, or GIFs.
Vertical or horizontal: you choose the orientation.
Upload pictures from your device, link to an online photo, browse the Genially library, or generate images with AI.
Make interactive product comparisons
Give customers a visual preview of what they can expect if they choose your product or service.
Highlight key features, showcase similar products, or reveal transformations with a touch of humor, increasing engagement and time on page.
Use interactive tooltips, labels, and CTAs to provide product specifications and capture leads.
Build trust and credibility with side-by-side comparisons that show real client projects or the evolution of your product.
Stand out and get remembered: Interactive content can boost shares, dwell time, and click through rate.
Free
It’s free to make image comparison sliders in Genially. Upgrade for more powerful features like engagement metrics and branding tools.
Easy to share
Display anywhere. Share the link, embed on your webpage or online shop, add to an eLearning course, or integrate with your LMS.
Accessible
All published Genially content meets WCAG standards. Add ALT text to make sure that users of assistive tools can understand what’s in the images.
Customization
Adjust the dimensions, add captions, and tailor every element on the screen. Add your logo and branding, or embed the slider into a larger design.
More than sliders
Genially offers a complete toolkit for building all kinds of interactive and gamified content for marketing, communications, and online learning.
Multi-device
Genially works beautifully on any device including phone, tablet, and laptop. Users can click and drag the slider bar with a cursor move, or tap and swipe.
STEP BY STEP
How to make an image comparison slider
Choose your images
Add a Comparison slider widget to the canvas and replace the sample images. You can upload files from your device or Google Drive, paste in the url, search Genially’s resource library, or generate images with AI.
Customize
Choose the format, dimensions, and whether you want captions. Don’t forget to add ALT text to make the images accessible, and use the Preview button to see how everything will appear to your audience.
Share
Happy with the design? Click Share to get the link. Your slider is ready to embed or share wherever you like. Everything’s in the cloud, so if you update the design, changes appear automatically.
Share, embed, or integrate anywhere! Genially is compatible with every popular website builder, CMS, and LMS.
TEMPLATES
Pre-built layouts
Create a custom slider from scratch or use a template to quickly design an entire page. Add your images and text, and it’s ready to publish.
Before and after slider
Visual comparison slider
Image comparison slider
"A great way to build smart interactions without any big effort. Every designer is, with the help of Genially, an interaction web app builder"
Danny Fandrich
CEO UpReach
Frequently asked questions
What size and format do the images need to be?
Genially’s Comparison widget is compatible with any image in JPG, JPEG, PNG, SVG, or GIF format, with a size of up to 10MB. You can adjust the size of the slider and select a portrait (vertical) or landscape (horizontal) layout.
How do I add a Before and After slider to my website?
Create your free design in Genially and click Share to publish. Copy-paste the link that’s compatible with your content management system. Genially can be posted online, shared, or embedded in various formats including url, HTML, and iframe.
How can I use image comparison sliders?
Any time you want to show a transformation over time (Before and After, Then vs Now) or present a choice between two options (This or that).
Because sliders have a strong visual impact, they’re a popular journalistic and educational device for displaying changes to a landscape, or highlighting ecological, historical, and geographical developments.
For business and marketing, they’re a great portfolio tool for showcasing results or client case studies like renovation and makeover projects.
In the world of software and product development, side-by-side comparisons can be used to visually document changes to an interface or process.
For Learning and Development, you could use an interactive slider to present best practices in the workplace, company Dos and Dont’s, or the Right or Wrong options for carrying out a task.
Many Genially users have created innovative eLearning and teaching resources including spot-the-difference games, grammar lessons, and visual translations. Try it yourself and get creative!