Increase AOV with a customizable slide cart drawer, AI cart upsells, smart rewards & a progress bar Amote helps boost AOV with a customizable cart drawer, slide cart, and smart cart upsell tools. Add AI upsell, in-cart upsells, cross-sells, cross selling, cart page upsell, checkout upsell, product add-ons, discount offers, quantity breaks, free gift, reward bar, progress bar, urgency timer, trust badges, payment icons, sticky add to cart, and free shipping bar. Turn every side cart drawer into a cart upsell engine that drives conversions, lifts AOV, and creates more revenue from every order. Amote helps boost AOV with a customizable cart drawer, slide cart, and smart cart upsell tools. Add AI upsell, in-cart upsells, cross-sells, cross selling, cart page upsell, checkout upsell, product add-ons, discount offers, quantity breaks, free gift, reward bar, progress bar, urgency timer, trust badges, payment icons, sticky add to cart, and free shipping bar. Turn every side cart drawer into a cart upsell engine that drives conversions, lifts AOV, and creates more revenue from every order. more Boost AOV with smart cart upsell, AI cart upsell offers, and cart drawer tools Use free gift, free shipping bar, reward bar, and progress bar to sell more Add cart page upsell, checkout upsell, cross-sells and sticky add to cart tools Show quantity breaks, discounts, product add-ons, gift wrap, BOGO, Buy X Get Y Customize your slide cart with rewards, trust badges, add-ons, and payment icons
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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View Best Custom CSS AppsBoost AOV with slide cart drawer upsells, free gifts & full cart customization - CSS, HTML & JSX. The original slide cart since 2019! Increase your store's average order value by adding a progress bar, cart upsells, free gifts, BOGO (buy x get y), frequently bought together, discounts, promotions & announcements with our slide cart. The sticky cart drawer looks great on any theme and reduces cart abandonment by making your cart accessible from anywhere on your site. Make your cart a revenue machine with every section designed for your brand - loved by top D2C e-commerce brands globally. The original slide cart since 2019! Increase your store's average order value by adding a progress bar, cart upsells, free gifts, BOGO (buy x get y), frequently bought together, discounts, promotions & announcements with our slide cart. The sticky cart drawer looks great on any theme and reduces cart abandonment by making your cart accessible from anywhere on your site. Make your cart a revenue machine with every section designed for your brand - loved by top D2C e-commerce brands globally. more Agency-Grade Themes: Built-in cart templates by leading D2C e-commerce designers Cart Upsell & Cross Sell: Suggest frequently bought together items in your cart Rewards Progress Bar: Motivate customers to spend more by showing spending goals Free Gifts: Offer gifts when customers buy specific products, MOQ or cart value Sticky Cart Drawer: A floating cart that remains fixed, accessible from anywhere
Help Center HQ allows you to add a help center or FAQ page to your store in just a few minutes. HelpHQ allows users to get answers immediately from your own Frequently Asked Questions/Q&A page. An effective help center can answer massive amounts of questions before the customer has a chance to email you. HelpHQ will gather valuable satisfaction data on your help center articles. You will learn which question can be answered better, what's dissatisfying customers, what´s working, and so much more. HelpHQ allows users to get answers immediately from your own Frequently Asked Questions/Q&A page. An effective help center can answer massive amounts of questions before the customer has a chance to email you. HelpHQ will gather valuable satisfaction data on your help center articles. You will learn which question can be answered better, what's dissatisfying customers, what´s working, and so much more. more Insta-search: It will find answers instantly as the user types their question. Powerful editor: it makes writing help articles and a faq page a breeze. Customizable: to build a FAQ page that fits in with your store and brand. Seamless integration: manage your help center from the same familiar dashboard. Customer Feedback: collect user customer feedback through simple emojis.
Bundle & Upsell App to Boost Your Store Revenue With Amazing-looking Bundles. Boost your store revenue with the bundle & upsell app. Create any type of bundle or upsell scenario in your store like - bundle as product, bundle builder, upsell, cross-sell, BOGO, quantity breaks, volume discounts, and frequently bought together. Amplify's connected upsell tools are based on the industry-leading bundler engine to help you collect more revenue at key points in the shopper’s journey with personalized AI offers. Live chat support to help you with any questions. Boost your store revenue with the bundle & upsell app. Create any type of bundle or upsell scenario in your store like - bundle as product, bundle builder, upsell, cross-sell, BOGO, quantity breaks, volume discounts, and frequently bought together. Amplify's connected upsell tools are based on the industry-leading bundler engine to help you collect more revenue at key points in the shopper’s journey with personalized AI offers. Live chat support to help you with any questions. more Sell bundles as single products, offer bundle builders and quantity breaks Let customers build their own bundle with bundle builder scenarios Offer volume discounts on single products based on quantity breaks Upsell & cross-Sell with one-click bundle upsells, BOGO, kits, and mix & match Customize with no coding, no wait. Get live chat with proactive support
Powerful Slide Cart With Cart Upsell, Free Gifts, Rewards Bar & Post Purchase Upsell to Boost Sales Leverage a slide cart drawer, equipped with a powerful tiered rewards progress bar and post-purchase upsell scenarios. Encourage customers to add more products and receive rewards like free shipping, free gifts, and discounts. Tailor product recommendations with smart cart upsell rules to maximize every opportunity to optimize your AOV. Create an easy shopping experience and reduce cart abandonment by moving customers faster to checkout. Leverage a slide cart drawer, equipped with a powerful tiered rewards progress bar and post-purchase upsell scenarios. Encourage customers to add more products and receive rewards like free shipping, free gifts, and discounts. Tailor product recommendations with smart cart upsell rules to maximize every opportunity to optimize your AOV. Create an easy shopping experience and reduce cart abandonment by moving customers faster to checkout. more Slide Cart: Cart with tiered rewards - free shipping, free gift, and discounts Cart Upsell: Recommended products in-cart based on AI or custom rules Post Purchase Upsell: optimize AOV with one click upsell offers in post-checkout Advanced Cart Features: Shipping protection upsell, custom HTML, custom widgets Easy Customization: No coding, no wait. Get live chat superior support
The simplest app to display your IG posts and reels! Takes less than a minute to set up. If you're looking for a simple, set-and-forget app to show your Instagram posts on your Shopify store, look no further! This delightful app lets you add an Instagram gallery on your website in less than a minute, no coding required. If you're looking for a simple, set-and-forget app to show your Instagram posts on your Shopify store, look no further! This delightful app lets you add an Instagram gallery on your website in less than a minute, no coding required. more Takes less than a minute to set up Choose from 3 beautiful designs: grid, collage, and slider (carousel) Supports normal posts and reels Looks great on mobile and desktop Highly optimized widget that won't slow down your store
Improve your store design with beautiful photo collections created by ANG photo gallery. ANG Photo Gallery enables effortless and swift creation of stunning photo galleries. With a wide array of customization options at your disposal, such as layout, color schemes, visual effects, and page selection, you can tailor your collection to perfection. ANG photo gallery is modernly designed, highly compatible with a variety of screens and devices. You can also boost sales of products tagged with photos in your gallery. ANG Photo Gallery enables effortless and swift creation of stunning photo galleries. With a wide array of customization options at your disposal, such as layout, color schemes, visual effects, and page selection, you can tailor your collection to perfection. ANG photo gallery is modernly designed, highly compatible with a variety of screens and devices. You can also boost sales of products tagged with photos in your gallery. more Easily create galleries with unlimited photos. Optimized photos. Upload photos in bulk, customize effects, colors, layout. Make it easy for shoppers to buy products with products tagged on photos. Mobile-first responsive.
A simple solution to create mega menu, tab menu or tree menu for store. Transform your store navigation with Extra Menu — the all-in-one menu builder. Create Mega Menus, Tab Menus, Tree Menus, Contact Forms, Countdown Timers, Breadcrumbs and more — using ready-made templates and an intuitive editor. Multi-Menu & Smart Targeting — Build multiple menus and publish each to specific markets, desktop, or mobile. Perfect for global stores needing localized, device-optimized navigation. No coding required. Fully customizable. Beautifully responsive. Transform your store navigation with Extra Menu — the all-in-one menu builder. Create Mega Menus, Tab Menus, Tree Menus, Contact Forms, Countdown Timers, Breadcrumbs and more — using ready-made templates and an intuitive editor. Multi-Menu & Smart Targeting — Build multiple menus and publish each to specific markets, desktop, or mobile. Perfect for global stores needing localized, device-optimized navigation. No coding required. Fully customizable. Beautifully responsive. more Create mega menu, tab menu and tree menu (dropdown menu) by using template. Simple and fast customization. Vertical menu. Multi-language + Limit markets + Limit pages + breadcrumbs + Schedule menu item Mobile friendly.
The All-in-One Announcement Solution for Your Store! The All-in-One Announcement Solution for Your Store! With Annify, capturing your customers' attention has never been easier. Create eye-catching announcement bars to share promotions, updates, and important messages directly on your Shopify store. Annify is designed to be fast, flexible, and easy to customize for any type of store. The All-in-One Announcement Solution for Your Store! With Annify, capturing your customers' attention has never been easier. Create eye-catching announcement bars to share promotions, updates, and important messages directly on your Shopify store. Annify is designed to be fast, flexible, and easy to customize for any type of store. more Fixed bar stays visible while scrolling for consistent messaging. Marquee-style bar with scrolling text to capture customer attention. Sliding bar rotates multiple messages for seamless updates. Smooth animations enhance sliding and marquee announcement bars. Page & geo targeting: show announcements by page and visitor location
Helps users to compare two images of before and after with slider separation directly as Apps block Before - After & Comparison by Apps on Demand provides you option for adding the image for comparison for showing the before/after images for the products or services they provides. Directly shown as section in the customize which makes it a perfect fit for Shopify 2.0 themes. It fully customizable from theme editor and requires no coding skills. The app is ideal fit for any industry that want to show before and after images of their products or services that will eventually uplift sales. Before - After & Comparison by Apps on Demand provides you option for adding the image for comparison for showing the before/after images for the products or services they provides. Directly shown as section in the customize which makes it a perfect fit for Shopify 2.0 themes. It fully customizable from theme editor and requires no coding skills. The app is ideal fit for any industry that want to show before and after images of their products or services that will eventually uplift sales. more Add multiple sections with option of show either 1, 2 or 3 images in a row. Fully customizable settings. Desktop and Mobile Compatible. Compare two images
Add Button to External links - Amazon, Walmart, Ebay | Affiliate links, Any custom links AOD External Links Button will allow you to easily add external affiliate link buttons on product page. As you know customer always search for good price on another websites. In our app you can add affiliate links of your products from website like Amazon, Ebay, Jet, Aliexpress etc. so you do not loose your sales and users will see only your product on different platforms. You can add unique affiliate links for each product. We also provide an option to hide "Add to cart" button. AOD External Links Button will allow you to easily add external affiliate link buttons on product page. As you know customer always search for good price on another websites. In our app you can add affiliate links of your products from website like Amazon, Ebay, Jet, Aliexpress etc. so you do not loose your sales and users will see only your product on different platforms. You can add unique affiliate links for each product. We also provide an option to hide "Add to cart" button. more The app installation process is extremely easy & it does not require manual code Add External links buttons for Unlimited Products. Replace & Hide Add to Cart. Show External links button on product, collection page & home page products. Increase Sales by adding affiliate link buttons. Boost your buyer confidence. You can customize the button style according to your theme design.
Product Options override variants limit and can create multiple addons with custom price With Product Options you can create multiple options such as text, drop-down, radio, checkbox, date & time, swatches with custom price add-ons. This will help you to collect more important information of your products and will help you increase in sale. The app installation is very easy following creating product options and assigning them to either collections or products. Rely us for getting more product information from users through options for better selling of your products. With Product Options you can create multiple options such as text, drop-down, radio, checkbox, date & time, swatches with custom price add-ons. This will help you to collect more important information of your products and will help you increase in sale. The app installation is very easy following creating product options and assigning them to either collections or products. Rely us for getting more product information from users through options for better selling of your products. more One click install & no coding skills required / 2.0 Compatible Unlimited Variants Options | Swatches | Date & Time Dropdown | Checkboxes | Short Text | Long Text | Radio | File Upload Ajax Cart Compatibility with Shopify Discounts on Addon Priced Checkouts Mixed Cart with custom priced add-ons and normal product
Advanced product options: 30+ option types, add-ons, bulk edit, multi-step, advanced rules & more. Go beyond Shopify native product option limits. Create option sets to apply across products or add product-level options. Dynamically update product price based on the options the shopper selects. From swatches to file uploads & dimensional formula-based price calculator, build product options that fit any configuration. Build multi-step flows, add advanced rules like show/hide. Bulk edit to manage large catalogs fast. Bundle upsells as product add-ons to grow AOV. No-code setup. Go beyond Shopify native product option limits. Create option sets to apply across products or add product-level options. Dynamically update product price based on the options the shopper selects. From swatches to file uploads & dimensional formula-based price calculator, build product options that fit any configuration. Build multi-step flows, add advanced rules like show/hide. Bulk edit to manage large catalogs fast. Bundle upsells as product add-ons to grow AOV. No-code setup. more Unlimited product options & variant options: option sets + product-level options 31 option types: swatches, dropdown, buttons, text, range slider & file upload Dimensional price calculator: formula pricing by width / height / length Add-on products for upsells, bundles and cross-sells Conditional rules (show/hide) + multi-step flows, bulk add/edit & localization
Build personality tests, product quizzes, and trivia to engage shoppers and increase conversions. Appify helps merchants create unlimited quizzes without coding to boost sales and engagement. Build product recommendation quizzes that guide customers to perfect matches, personality tests that go viral on social media.Collect valuable customer data with customizable lead forms, use conditional logic for personalized results, and track performance with built-in analytics. Choose from 9 question types, mobile-responsive themes, and integrate with email marketing tools to grow your list. Appify helps merchants create unlimited quizzes without coding to boost sales and engagement. Build product recommendation quizzes that guide customers to perfect matches, personality tests that go viral on social media.Collect valuable customer data with customizable lead forms, use conditional logic for personalized results, and track performance with built-in analytics. Choose from 9 question types, mobile-responsive themes, and integrate with email marketing tools to grow your list. more Create engaging quizzes with 9 question types to boost customer interaction. Match quizzes to your store's look with customizable colors, fonts, and themes. Collect customer emails and sync to Mailchimp, Klaviyo, and other email tools. Track completion rates and customer behavior to optimize quiz performance. Shuffle questions and answers to keep quizzes fresh for returning customers.
Take booking for events, appointments, services on your calendar. Calendar Appointment Booking App. Setup "Book Now" on any product or service. Convert any product into a bookable service in 3 easy steps, just add the product to the app, assign team members, and then schedule availability. App will add a scheduling button on the product to let customers book appointments. Works like Calendly, to take booking on products. Schedule appointment booking seamlessly, whether in-person or online, with automated Zoom integration. Allow staff members to set up accounts and log in to the dashboard. Setup "Book Now" on any product or service. Convert any product into a bookable service in 3 easy steps, just add the product to the app, assign team members, and then schedule availability. App will add a scheduling button on the product to let customers book appointments. Works like Calendly, to take booking on products. Schedule appointment booking seamlessly, whether in-person or online, with automated Zoom integration. Allow staff members to set up accounts and log in to the dashboard. more Flexible Setup: Calendar Integrations, Custom Questions, Group Events & more Team Member Support: Add your staff as team members for taking multiple booking Add Google/Outlook calendars for 2 way sync. Connect Zoom for online meetings. Appointments cancellation & rescheduling flow without manual intervention. Deposits: Allow Customers to pay a deposit amount while booking the appointment.
Take bookings, appointments, events & service on your calendar. Booking app for any appointment. Appointo app adds a native scheduling popup on any service/product you sell on Shopify. Start selling services in your store within 2 min without any technical knowledge. Works like Calendly, but integrated into Shopify. You can sell in your physical location or online using automated zoom or google meet links. Ask custom questions to your customers also add multi-day on your site, for tours, hotel, Boat rental, car rental, etc. Appointo app adds a native scheduling popup on any service/product you sell on Shopify. Start selling services in your store within 2 min without any technical knowledge. Works like Calendly, but integrated into Shopify. You can sell in your physical location or online using automated zoom or google meet links. Ask custom questions to your customers also add multi-day on your site, for tours, hotel, Boat rental, car rental, etc. more Customer Booking Portal through which customers can manage their bookings Sends automated emails and text for reminders, confirmations, rescheduling, etc. Supports group appointments, Google, Outlook calendar and Zoom Integrations. Supports all themes and automatically translates to the store's language. Manage one-time and recurring booking subscriptions including payments
Appointment booking & calendar app for services, events & classes. Booking app & appointment app. This appointment app transforms any product into a bookable service or event in under 1 min! The Propel booking app adds a scheduling popup to product pages to take appointments & bookings for services, events, courses, reservations & workshops. Similar to Calendly, with a beautiful mobile-first design, Zoom & Google Calendar integration, SMS reminders, deposits, group appointments & more, the Propel appointment booking app will help you sell more bookings, stay organized & reduce no-shows. This appointment app transforms any product into a bookable service or event in under 1 min! The Propel booking app adds a scheduling popup to product pages to take appointments & bookings for services, events, courses, reservations & workshops. Similar to Calendly, with a beautiful mobile-first design, Zoom & Google Calendar integration, SMS reminders, deposits, group appointments & more, the Propel appointment booking app will help you sell more bookings, stay organized & reduce no-shows. more Use group appointments to offer classes, webinars, events & more. Reduce no-shows, ask for reviews and more with SMS and email notifications. Add custom questions to your booking form to gather the info you need. Easily take deposits and partial payments to secure bookings. Zoom integration auto creates meeting URLs. Integrates with Google Calendar.
Turn products into appointments. Set flexible time slots and manage bookings easily AptBook lets you accept appointments directly from your Shopify store in just 1 minute. Perfect for salons, spas, clinics, doctors, coaches, workshops, classes, and service-based businesses. Turn products into bookable services with flexible time slots, custom durations, buffer time, and holiday controls. Customers can book instantly from your homepage. Sync with Google Calendar and host video calls via Zoom or Agora. Setup in 3 simple steps and start accepting bookings today. AptBook lets you accept appointments directly from your Shopify store in just 1 minute. Perfect for salons, spas, clinics, doctors, coaches, workshops, classes, and service-based businesses. Turn products into bookable services with flexible time slots, custom durations, buffer time, and holiday controls. Customers can book instantly from your homepage. Sync with Google Calendar and host video calls via Zoom or Agora. Setup in 3 simple steps and start accepting bookings today. more Offer customers seamless booking from product page to checkout in seconds. Set working hours, breaks, holidays & full control over your availability. Add Zoom URL and Google Meet Link to Connect for online meetings Replace the "add to cart" button for a "book now" button on any product page Booking an Appointment: You schedule the video call by selecting a time slot.
Inform with clear delivery dates. Answer "When will it arrive?" and elevate trust. Try now! Merchants can enhance the shopping experience with AppRoom Estimated Delivery Day. This app allows stores to display EDD (Estimated Delivery Date) and ETA (Estimated Time of Arrival) on product pages. It provides accurate EOD (End of Day) estimates, setting clear delivery expectations. The result? Fewer customer inquiries and a stronger trust bond between merchant and shopper. Merchants can enhance the shopping experience with AppRoom Estimated Delivery Day. This app allows stores to display EDD (Estimated Delivery Date) and ETA (Estimated Time of Arrival) on product pages. It provides accurate EOD (End of Day) estimates, setting clear delivery expectations. The result? Fewer customer inquiries and a stronger trust bond between merchant and shopper. more One-click setup via Shopify Theme Editor: simple, no coding needed. "Get It By" countdown for urgency: adjust messages and colors. Control timer display: show/hide on specific days and omit weekends/holidays. Clear delivery info reduces support, boosts sales. Boost sales with urgent delivery timers for high-demand products.
The product options solution for you – simple to start, powerful to grow! Create unlimited custom options in minutes – no code needed. Let customers preview their custom texts, images, and design inputs live on product images – perfect for POD, gift, and custom products. Use swatches, dropdowns, checkboxes, text fields & more to personalize every shopping journey. Boost sales with add-on pricing, upsells & smart conditional logic. Seamlessly sync with orders, emails & packing slips for easy tracking and fulfillment. Mobile-optimised and backed by real humans 24/7. Create unlimited custom options in minutes – no code needed. Let customers preview their custom texts, images, and design inputs live on product images – perfect for POD, gift, and custom products. Use swatches, dropdowns, checkboxes, text fields & more to personalize every shopping journey. Boost sales with add-on pricing, upsells & smart conditional logic. Seamlessly sync with orders, emails & packing slips for easy tracking and fulfillment. Mobile-optimised and backed by real humans 24/7. more Live previews on product images for custom inputs, images & designs Add multiple option sets per product with unlimited options (30+ option types) Conditional logic, add-on pricing, bundles for upsell & cross-sell support Auto-sync with orders, emails & packing slips - Ez management & fast fulfillment 24/7 Live Support: Our expert team is always ready to help!
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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.