Size Chart & Size Guide: Your seamless solution for precise sizing guidance, reduce return. Effortless sizing with ILM Size Chart & Size Guide app. Add multiple size chart templates, customize each size chart with images, videos, tabs, and custom CSS. Every size chart is mobile and desktop friendly. Display a size chart using app blocks on Shopify 2.0. Support unit conversion between cm and inches. Upload images or use the built-in library to enhance each size chart. Create a clear, consistent, and powerful size chart experience. Effortless sizing with ILM Size Chart & Size Guide app. Add multiple size chart templates, customize each size chart with images, videos, tabs, and custom CSS. Every size chart is mobile and desktop friendly. Display a size chart using app blocks on Shopify 2.0. Support unit conversion between cm and inches. Upload images or use the built-in library to enhance each size chart. Create a clear, consistent, and powerful size chart experience. more Pre-made size chart templates & add multiple size tables, Images, Text, Videos. Assign size chart to specific collections, products, vendors, types and tags. Choose from versatile display options: Floating, Inline, or Block size chart. Quickly localize your size chart into multiple languages with just a few clicks Unit Conversion between cm, inches and CSS customization in size charts
Custom CSS Shopify Apps
Discover the best Custom CSS apps for your Shopify store in 2026. Compare features, pricing, and reviews to find the perfect solution.
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Create beautiful image sliders, banner sliders, logo carousels, and lookbook without coding Image Slider Pro helps you create banner sliders, logo carousels, and lookbook-style sliders in just a few steps. Upload multiple images, control slider speed, add captions, and link each image to products, collections, pages, or external URLs. The app is mobile responsive and designed to help merchants display visual content in a clean, professional way. The Shopify App Store listing highlights features including bulk image upload, custom styles, captions, hover effects & scheduling. Image Slider Pro helps you create banner sliders, logo carousels, and lookbook-style sliders in just a few steps. Upload multiple images, control slider speed, add captions, and link each image to products, collections, pages, or external URLs. The app is mobile responsive and designed to help merchants display visual content in a clean, professional way. The Shopify App Store listing highlights features including bulk image upload, custom styles, captions, hover effects & scheduling. more Customize speed and add text and links to images from the backend effectively Redirect customers to products or external links when they click the images Install logo slider anywhere on your store home page or products/collection page
Shoppable Instagram feed with different Grid / Slider layouts and lot of customization options. Instafeed / Instagram feed gallery with many customization options enables merchant to display Instagram gallery as a grid, slider. Auto and real time sync with Instagram. Light weight custom video galleries on page, easy to setup with theme editor. Instagram gallery using official Facebook API. Login with Facebook or Instagram in your own account & display instafeed from your Instagram account. Make shoppable instafeed, reels & stories with product tagging on Instagram picture. Instafeed / Instagram feed gallery with many customization options enables merchant to display Instagram gallery as a grid, slider. Auto and real time sync with Instagram. Light weight custom video galleries on page, easy to setup with theme editor. Instagram gallery using official Facebook API. Login with Facebook or Instagram in your own account & display instafeed from your Instagram account. Make shoppable instafeed, reels & stories with product tagging on Instagram picture. more Tag products to make it shoppable instagram feed. Tag unlimited products Attractive popup & gallery layouts help you to get instagram followers Social proof with user generated contents. Increase brand awareness w/ instafeed No Branding, Connect with Facebook / Instagram, Hide / Show Images Open image in popup or redirect to instagram link from instagram feed
Turn product images into room visualizers using 3D & AI. Increase buyer confidence & conversions. Consumers abandon online furniture purchases due to overwhelming choices and difficulty visualising products. Imersian's AI-powered 3D and AR technologies simplify the design and shopping process. Merchants can showcase their products in a real-life context, enhancing the shopping experience. Customers can upload images of their interiors and style them with retailers' products, leading to increased conversions, lower abandonment rates, satisfied, loyal customers & higher order value. Consumers abandon online furniture purchases due to overwhelming choices and difficulty visualising products. Imersian's AI-powered 3D and AR technologies simplify the design and shopping process. Merchants can showcase their products in a real-life context, enhancing the shopping experience. Customers can upload images of their interiors and style them with retailers' products, leading to increased conversions, lower abandonment rates, satisfied, loyal customers & higher order value. more Room Visualizer: Upload a room photo and style with your products AI-Powered 3D Models: Create realistic 3D models faster and cheaper Magic Eraser. Allow Customers to clean their rooms before uploading AI Shopping: Quick product recommendations based on users' requirements & needs HQ Renders: Create lifestyle product images at a fraction of studio costs.
Improve your store's experience with an efficient and actionable search engine, powered by AI Empower your store with a fast, actionable AI-powered search bar that aligns with your business goals. Enhance your store with advanced search by text, images and sketches. Configure search and filters by using any attribute or meta fields. Understand your visitors and analyze your store with the reports in Impresee Dashboard PRO. Empower your store with a fast, actionable AI-powered search bar that aligns with your business goals. Enhance your store with advanced search by text, images and sketches. Configure search and filters by using any attribute or meta fields. Understand your visitors and analyze your store with the reports in Impresee Dashboard PRO. more Advanced AI-powered search to enhance customer experience Search by text, image and sketch without usage limits Advanced search analytics, zero-hit searches, conversions, and more Fully configurable filters in search results, boost products in search results Actionable alerts for your business
Creating Custom Product Options with Infinite Flexibility for Over Nine Years and Counting! Let your shoppers customize products by adding option fields to your product pages like: text inputs, dropdown menus, color and variant image swatches, radio buttons, date pickers, checkboxes, large textareas, widths, heights, dimensions, and much more. You can even bundle add-on products to option selections to increase the price of your item. Need to add a gift-wrapping surcharge? How about $15 for rush processing? It's easy with Infinite Options. Let your shoppers customize products by adding option fields to your product pages like: text inputs, dropdown menus, color and variant image swatches, radio buttons, date pickers, checkboxes, large textareas, widths, heights, dimensions, and much more. You can even bundle add-on products to option selections to increase the price of your item. Need to add a gift-wrapping surcharge? How about $15 for rush processing? It's easy with Infinite Options. more Text inputs, radio buttons, checkboxes, dropdown menus, color swatches and more! Use options to offer addon bundles so you can increase average order values Personalize products with swatches, engraving, monogramming, and custom printing Show/hide relevant options based on selections with conditional logic Our friendly USA-based support team is here to help you every step along the way
One platform for marketing and customer engagement teams to collaborate effectively. Insider One is the platform that brings everything marketing and customer engagement teams need in one place so they can reach their peak performance and become unstoppable. With AI and an integrated Customer Data Platform (CDP), Insider One unites data, personalization, and journey orchestration across the most extensive set of natively supported channels, including WhatsApp, SMS, Email, Web, App, and Site Search. Insider One provides the ultimate vendor experience for 2,000+ customers. Insider One is the platform that brings everything marketing and customer engagement teams need in one place so they can reach their peak performance and become unstoppable. With AI and an integrated Customer Data Platform (CDP), Insider One unites data, personalization, and journey orchestration across the most extensive set of natively supported channels, including WhatsApp, SMS, Email, Web, App, and Site Search. Insider One provides the ultimate vendor experience for 2,000+ customers. more Recover abandoned carts with triggered Email and SMS Personalize your store with 100+ pre-built templates like Social Proof and more Deliver AI-powered, affinity based recommendations to drive upsell/cross-sell Trigger price drop notifications with WhatsApp Business messages Build unified customer profiles with past behavior, analytics and predictions
Show Instagram feeds, shoppable videos, Reels & UGC on your store and turn visitors into customers With Mintt (Instafeed), you can easily add shoppable Instagram feeds, shoppable videos and UGC to your store exactly as you wish. You can also create feeds by uploading your own files. Displaying feeds with engaging content such as photos, videos and Reels on your store can help you build social proof and drive sales. Mintt Studio also lets you automatically update your store with the latest Instagram content, ensuring it stays fresh with new products and trends your visitors can shop for. With Mintt (Instafeed), you can easily add shoppable Instagram feeds, shoppable videos and UGC to your store exactly as you wish. You can also create feeds by uploading your own files. Displaying feeds with engaging content such as photos, videos and Reels on your store can help you build social proof and drive sales. Mintt Studio also lets you automatically update your store with the latest Instagram content, ensuring it stays fresh with new products and trends your visitors can shop for. more Show posts (photos, Reels, videos) in gallery grid or slider layout Manual or auto optimized layout Custom rows and columns for mobile Tag multiple products and collections - create shoppable photo and video feeds Filter your posts by hashtags
Instafeed - Instagram Feed, Instagram Story, Instagram Highlights, Instagram Reels Instafeed – The ultimate Instagram app for your store. Simple Instagram integration. Seamlessly connect your Instagram account to automatically update your store with your latest posts, stories, reels and highlights. With this Instafeed, showcase your Instagram feed in a beautiful carousel/slider on your website, effortlessly integrate stories and display highlights in a stunning slider anywhere in your store. Instantly transform your store and automatically drive fresh new content. Instafeed – The ultimate Instagram app for your store. Simple Instagram integration. Seamlessly connect your Instagram account to automatically update your store with your latest posts, stories, reels and highlights. With this Instafeed, showcase your Instagram feed in a beautiful carousel/slider on your website, effortlessly integrate stories and display highlights in a stunning slider anywhere in your store. Instantly transform your store and automatically drive fresh new content. more Instagram Feed - Display a simple but beautiful feed of your latest posts Instagram Story & Highlights - Bring those Instagram circles to your store Instagram Reels - Embed your latest reels instantly Mobile Optimised - Automatically resizes to work on all display sizes No Coding Required - Instantly add your Instagram feed within seconds
Create a Sticky Add To Cart button to make it easier to buy in your store, and support mobile. Instant Buy allows you to create a button to redirect store visitors to relevant pages like product pages, discount events, and back-in-stock announcements. Shoppers can easily and quickly add products to their cart instantly and be directed to the checkout page with one click checkout. Instant Buy allows you to add your Facebook Pixel ID and Pinterest Tag ID to the Add To Cart button. Statistics and counting the number of impressions and clicks on the Sticky Add To Cart button Instant Buy allows you to create a button to redirect store visitors to relevant pages like product pages, discount events, and back-in-stock announcements. Shoppers can easily and quickly add products to their cart instantly and be directed to the checkout page with one click checkout. Instant Buy allows you to add your Facebook Pixel ID and Pinterest Tag ID to the Add To Cart button. Statistics and counting the number of impressions and clicks on the Sticky Add To Cart button more Create a Sticky Add To Cart button to make it easier to buy in your store Recover abandoned carts with Facebook and Pinterest Remarketing Statistics and counting the number of impressions and clicks on the Ajax Button Customize the button's text, font size, and color to match with the main theme. Optimize execution speed and do not affect website speed
The Quick View feature on the collection page that displays the details of the product in a popup Instant View app allows you to enable a feature on the collection page that helps your customers to see the product information in an intuitive way. The Quick View feature plays an important role in creating more conversions from online stores. This saves your customers time and provides a faster browsing experience. Instant View app allows buyers to view product details quickly without navigating to the product page. Instant View app allows you to enable a feature on the collection page that helps your customers to see the product information in an intuitive way. The Quick View feature plays an important role in creating more conversions from online stores. This saves your customers time and provides a faster browsing experience. Instant View app allows buyers to view product details quickly without navigating to the product page. more Highly adaptable view for all desktop screen resolutions and iPad Truly compatible with most of Shopify themes Social Media share One-click Checkout Color Swatch Option
Dynamic Store Enhancement: Embed Real-Time Instagram Feeds with Instasync With Instasync, effortlessly integrate elegant Instagram feeds into your Shopify store in under a minute. Showcasing Instagram content, such as photos and Reels, on your store enhances social proof, transforming visitors into loyal customers and attracting new Instagram followers. Enjoy a one-click setup that’s compatible with all themes, and customize your feed design to perfectly match your brand. Experience the seamless integration and customization of Instasync—it's like magic! With Instasync, effortlessly integrate elegant Instagram feeds into your Shopify store in under a minute. Showcasing Instagram content, such as photos and Reels, on your store enhances social proof, transforming visitors into loyal customers and attracting new Instagram followers. Enjoy a one-click setup that’s compatible with all themes, and customize your feed design to perfectly match your brand. Experience the seamless integration and customization of Instasync—it's like magic! more Easy Integration: Sync your Instagram feed effortlessly with just a few clicks Product Driven Posts: Tag products in posts to display on related product pages Content Moderation: Hide posts and customize layouts with custom CSS Customizable Layouts: Use grid/slider, adjust rows, columns, posts in all themes Responsive Design: Optimized for both desktop and mobile users
Build custom contact forms and send submissions to CRMs, email, APIs, and tools Contact Form to Any API is a powerful Shopify form builder for merchants, agencies, and developers. Build unlimited custom forms using a visual editor, collect unlimited submissions, and control how your data flows. Start with simple contact forms and scale into structured workflows using APIs and integrations like HubSpot, Mailchimp, Klaviyo, Slack, or Zapier. No coding required. Free plan available with no limits on forms or submissions. Contact Form to Any API is a powerful Shopify form builder for merchants, agencies, and developers. Build unlimited custom forms using a visual editor, collect unlimited submissions, and control how your data flows. Start with simple contact forms and scale into structured workflows using APIs and integrations like HubSpot, Mailchimp, Klaviyo, Slack, or Zapier. No coding required. Free plan available with no limits on forms or submissions. more Build unlimited Shopify forms with no submission limits Drag-and-drop form builder that works with all Shopify themes Send form data to email, APIs, CRMs, or automation tools Start free and upgrade only when automation is needed Designed for merchants, agencies, and developers alike
Create color or image swatches for your products The purpose of the app is to convert your product variant options (typically dropdowns) into color swatches, image swatches, or text swatches. Create swatches for all products in bulk, or for specific products only. Customize the design of your swatches, the shape and size. The purpose of the app is to convert your product variant options (typically dropdowns) into color swatches, image swatches, or text swatches. Create swatches for all products in bulk, or for specific products only. Customize the design of your swatches, the shape and size. more Swatch types: Text swatches, Color swatches, Multicolor swatches, Image swatches Create swatches globally for all products, or for specific product individually Various swatch shapes and sizes, fully customizable design of swatches
Add a free shipping progress bar to motivate your customers to buy more and boost AOV! A Free Shipping Bar motivates customers to buy more to unlock free shipping. This intuitive free shipping progress bar takes only one minute to set up. Enhance customer engagement by displaying their progress towards the free shipping goal as they add items to their cart. Inspire shoppers to finalize their purchases by reaching the predetermined cart value, seamlessly integrating motivation with convenience. A Free Shipping Bar motivates customers to buy more to unlock free shipping. This intuitive free shipping progress bar takes only one minute to set up. Enhance customer engagement by displaying their progress towards the free shipping goal as they add items to their cart. Inspire shoppers to finalize their purchases by reaching the predetermined cart value, seamlessly integrating motivation with convenience. more Display a free shipping offer with progressive shipping goal to boost AOV Customize text, cart goals, and colors Simple, easy to use app with no coding required
A simple map section for your store. Display your locations by entering their names and addresses. IzyMaps makes it easy to add one or more store locations to your store. Customize the layout, highlight multiple locations, and even show the nearest one to your customer automatically. With flexible styling options and a clean design, it’s perfect if you're seeking a straightforward, elegant solution. IzyMaps makes it easy to add one or more store locations to your store. Customize the layout, highlight multiple locations, and even show the nearest one to your customer automatically. With flexible styling options and a clean design, it’s perfect if you're seeking a straightforward, elegant solution. more Add a Google Map with one or multiple store locations Auto-locate and show the nearest store based on customer location Let customers search by name, city, or address to find the right store Customize layout, colors, and content to match your store’s look
IzyRent is a complete and easy-to-use app for rentals, bookings, events, services & appointments Essential for every bookings, rentals, events, services, & appointments business. One click and you can now take hotel bookings, rent equipment & clothings, sell courses & a lot more. You dont have to set each availability date. It's fully dynamic. You can track all your current bookings directly from the app or on your favorite calendar! Speed and ergonomy is important, that's why IzyRent use a fast and lightweight calendar for best performance & user-experience. Essential for every bookings, rentals, events, services, & appointments business. One click and you can now take hotel bookings, rent equipment & clothings, sell courses & a lot more. You dont have to set each availability date. It's fully dynamic. You can track all your current bookings directly from the app or on your favorite calendar! Speed and ergonomy is important, that's why IzyRent use a fast and lightweight calendar for best performance & user-experience. more Auto-Block of Dates, Manual Bookings & Reminders. Discount Price & Special Rates based on any dates you want. Deposit Option & Pay Later for caution and partial online payment. Add products Add-ons and ask informations from customer with booking notes. Synchronize with Google, iCloud, Outlook, AirBNB & every iCalendar solution!
Add size guide & size charts that matches your brand, lightweight, fast, won’t slow down your store Getting returns because customers pick the wrong size? Our size chart app helps fix that. Create clear, fast-loading size charts and size guides with auto unit conversion, prebuilt templates, and fully flexible layouts. Show measurements with images, tables, or text, and customise every detail with plenty of settings. Translate your size guides for global shoppers, flexible size chart button placement options, and rely on our personalised support. We’ve got everything you need, try it out Getting returns because customers pick the wrong size? Our size chart app helps fix that. Create clear, fast-loading size charts and size guides with auto unit conversion, prebuilt templates, and fully flexible layouts. Show measurements with images, tables, or text, and customise every detail with plenty of settings. Translate your size guides for global shoppers, flexible size chart button placement options, and rely on our personalised support. We’ve got everything you need, try it out more Add tabs, images tables to size chart & create flexible size guide, size charts Assign size charts & size guide to specific products, collections, tags & vendor Flexible size chart & guide button placement option + custom button positioning Mobile & desktop responsive size chart, sizing guide & size charts Multi-language Support – Make sizing guides, size charts & size chart global
Refresh your buyer’s memory and boost sales by Recently Viewed Products in your store. Generate more revenue | Soft-sell products | Simplify the checkout process. Customers may want to pick up their shopping journey from where they have last left off. The Recently Viewed Products feature offers them an overview of the items they may have explored of late. It serves as a reminder for recently viewed items that once held their interest and encourages them to complete the purchase. We also offer homepage customization to display Recently Viewed Products on the home screen. Generate more revenue | Soft-sell products | Simplify the checkout process. Customers may want to pick up their shopping journey from where they have last left off. The Recently Viewed Products feature offers them an overview of the items they may have explored of late. It serves as a reminder for recently viewed items that once held their interest and encourages them to complete the purchase. We also offer homepage customization to display Recently Viewed Products on the home screen. more Multiple Language Translation Support Mobile-friendly display without losing out on features and functionalities. Customize the “Buy Now/Add to Cart” button to maintain brand consistency. Customize recently viewed products with border and background color and display. Enable or disable the recently viewed product slider and auto slider feature.
Increase sales and AOV with combo products, kits, bundle box sets, and mix & match offers. Encourage customers to spend more by offering product bundles at a discounted price (fixed discount or percentage discount), clear excess stock by bundling slow-moving items with bestsellers, and run seasonal promotions like holiday gift sets. Upsell complementary products in a single bundle, or simplify gifting with ready-made boxes. Use bundle maker to create flexible bundle pages for every sales strategy and increase profits. Install fast – go live today – start selling bundles in minutes! Encourage customers to spend more by offering product bundles at a discounted price (fixed discount or percentage discount), clear excess stock by bundling slow-moving items with bestsellers, and run seasonal promotions like holiday gift sets. Upsell complementary products in a single bundle, or simplify gifting with ready-made boxes. Use bundle maker to create flexible bundle pages for every sales strategy and increase profits. Install fast – go live today – start selling bundles in minutes! more Mix & Match: Let customers create personalized bundle sets with bundle builder. Build-a-Box / Boxbuilder: Shoppers pick products to fill their own box. Bundle Page: Dedicated bundle landing to boost AOV. Combo Bundle / Flexible Variants: Offer combos with multiple product options. Use Bundles app for Bundle Kits, Gift Sets, Meal Packs, Outfit Builders & More.
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About Custom CSS Apps for Shopify
Custom CSS apps are essential tools for Shopify merchants looking to enhance their store's functionality and improve customer experience. These specialized applications help store owners streamline operations, increase sales, and provide better service to their customers.
When choosing a custom css app for your Shopify store, consider factors such as features, pricing, customer support, and compatibility with your theme and other apps. Reading reviews from other merchants can also provide valuable insights into the app's performance and reliability.
The apps listed on this page represent some of the best custom css solutions available in the Shopify App Store. Each has been selected based on its functionality, user ratings, and overall value for Shopify merchants.