Supercharge Sales and Increase Order Value with a User-Friendly Cart Upgrade Create a seamless, user-friendly slide cart that complements your website's style and optimizes your Average Order Value (AOV). Our feature-packed cart builder ensures customer satisfaction and simplifies the cart process.Effortlessly maximize revenue with upselling and cross-selling options, and incorporate a sticky cart button to enhance conversions and reduce cart abandonment. Explore the capabilities of Boosty Cart Drawer Cart Upsell, making every cart interaction an opportunity for growth. Create a seamless, user-friendly slide cart that complements your website's style and optimizes your Average Order Value (AOV). Our feature-packed cart builder ensures customer satisfaction and simplifies the cart process.Effortlessly maximize revenue with upselling and cross-selling options, and incorporate a sticky cart button to enhance conversions and reduce cart abandonment. Explore the capabilities of Boosty Cart Drawer Cart Upsell, making every cart interaction an opportunity for growth. more Show Sticky Add to Cart, Slide Cart to desktop or mobile Display Upsell Product Recommendations (Cart Upsell) Create Free Shipping Progressive Bar, Cart Countdown Timer Create an Add-On option for shipping insurance or other products of your choice. Improve the view cart button's visibility with a sticky cart button.
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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Gift Box & Bundle Builder: Upsell/CRO/AOV/BOGO/Discount/Sales Funnels/Flash & Sales box, tape, card. Box King – Your Ultimate Bundle Building Companion! Drive sales with our feature-rich Bundle Builder! Enhance success by raising AOV with custom bundles. Customize bundles, let customers mix and match for personalized gift boxes. Optimize revenue with well-designed Upsell, CRO, and AOV-boosting funnels, including captivating Flash & Sales boxes that make your store stand out and entice customers. Global success: Box King helps strategically liquidate surplus inventory with pre-created bundles. Box King – Your Ultimate Bundle Building Companion! Drive sales with our feature-rich Bundle Builder! Enhance success by raising AOV with custom bundles. Customize bundles, let customers mix and match for personalized gift boxes. Optimize revenue with well-designed Upsell, CRO, and AOV-boosting funnels, including captivating Flash & Sales boxes that make your store stand out and entice customers. Global success: Box King helps strategically liquidate surplus inventory with pre-created bundles. more Maximize revenue with Upsell, CRO, AOV funnels, and exciting Flash & Sales Boxes Drive purchases with crafted promos, integrating discounts, deals, and freebies No hassle inventory: Bundle sync, from 3PL to Fulfilment, streamlined processes Global success: Box King helps liquidate surplus inventory via pre-built bundles Boost store revenue with Box King—every bundle is a sales opportunity!
Optimize Your Store's Navigation with Custom Breadcrumbs Our app is a crucial asset for merchants aiming to enhance SEO rankings and streamline user experience. Ideal for businesses of any size, our app simplifies intricate hierarchies, ensuring effortless navigation and effective customer engagement. Whether you're a growing e-commerce store or an established business, Breadcrumbs optimizes visibility and provides a user-friendly browsing journey. Streamline your online presence effortlessly for improved customer satisfaction and increased traffic. Our app is a crucial asset for merchants aiming to enhance SEO rankings and streamline user experience. Ideal for businesses of any size, our app simplifies intricate hierarchies, ensuring effortless navigation and effective customer engagement. Whether you're a growing e-commerce store or an established business, Breadcrumbs optimizes visibility and provides a user-friendly browsing journey. Streamline your online presence effortlessly for improved customer satisfaction and increased traffic. more Improve SEO rankings and drive organic traffic. Customize appearance and position effortlessly. Create unique hierarchies for categories and products. Enhances SEO by generating a JSON-LD BreadcrumbList schema
Show breadcrumbs on your product, article, and blog pages. Lightning fast with a one-click setup. Drag and place breadcrumbs across store - catalogs, products, blogs, collections. Enhances SEO with structured data for search engines. Improves navigation with clear trails - reducing bounces & make users stick around. Customize with tracked visitor paths for tailored shopping journeys based on behavior. Intuitive setup or custom CSV. Mobile-responsive design ensures optimal experience. Need more? Chat support for custom requirements. Covers rich schema to usability increasing sales. Drag and place breadcrumbs across store - catalogs, products, blogs, collections. Enhances SEO with structured data for search engines. Improves navigation with clear trails - reducing bounces & make users stick around. Customize with tracked visitor paths for tailored shopping journeys based on behavior. Intuitive setup or custom CSV. Mobile-responsive design ensures optimal experience. Need more? Chat support for custom requirements. Covers rich schema to usability increasing sales. more Lightning-Fast Performance: Parallel tech ensures zero impact on speed. Enhanced User Retention: Easy navigation boosts satisfaction. Robust Helpdesk: Fast support integrated into your store. Unlimited Navigation: Customize levels via CSV file. Landing Page Compatibility: Works with GemPages, PageFly.
Calendar & appointment booking app for rentals, tours, tickets, events, services, classes and more. Calendly for Shopify: Turn anything into a bookable service and start selling within minutes—no tech knowledge required. BookThatApp booking app lets you add custom questions to booking forms, send email or SMS reminders, and schedule bookings with Google Calendar, Outlook, iCal, Zoom, and more. Whether you're a tour provider, hotel, event organizer, class instructor (yoga, music, etc.), or rental business (dress rentals, boat rentals), BookThatApp manages all your appointment scheduling needs. Calendly for Shopify: Turn anything into a bookable service and start selling within minutes—no tech knowledge required. BookThatApp booking app lets you add custom questions to booking forms, send email or SMS reminders, and schedule bookings with Google Calendar, Outlook, iCal, Zoom, and more. Whether you're a tour provider, hotel, event organizer, class instructor (yoga, music, etc.), or rental business (dress rentals, boat rentals), BookThatApp manages all your appointment scheduling needs. more Sends automated emails and text for reminders, confirmations, rescheduling, etc. Powerful scheduling capabilities across services, employees and locations Seamless integration with external calendars, Reserve with Google and other apps Group booking: you can allow multiple customers to book the same timeslot. Manage one-time and recurring booking subscriptions including payments & waivers
Create stylish mega menus that elevate store design & navigation. Help shoppers find products faster Buddha Mega Menu helps merchants create clear and organized store navigation for desktop and mobile devices. Merchants can build multi-level mega menus with images, products, collections, tabs, and custom content without coding. The app supports responsive layouts, mobile-friendly navigation, and flexible menu design to help customers browse stores and find products more easily. Add sale banners, countdown timers, animated icons, and badges to highlight promotions and products. Buddha Mega Menu helps merchants create clear and organized store navigation for desktop and mobile devices. Merchants can build multi-level mega menus with images, products, collections, tabs, and custom content without coding. The app supports responsive layouts, mobile-friendly navigation, and flexible menu design to help customers browse stores and find products more easily. Add sale banners, countdown timers, animated icons, and badges to highlight promotions and products. more Choose from 4 submenu layouts: Tree, Simple, Tabbed & Contact Form Display featured images for collections, products, blogs, pages, banners & lists Show featured products with Add to Cart buttons directly in the menu SALES: Banners & Promotional blocks + Countdown timers for promotions GLOBAL: 1-Click Menu translation
All-In-One Bundles: Bundle Builder, Box Builder, Build A Box, Gift Box Builder, Mix and Match Bundle Grow AOV with a powerful Bundle Builder to Create and Buy personalized bundles. Build a Build a Box, Custom Bundle, or Mix and Match experience with Fixed Bundles, byob, addons, and a flexible Gift Box Builder. Let shoppers create the perfect gift box using Quantity Breaks, fixed pricing, and smart bundle rules. Optimize performance with Conversion Funnel Analytics. Create premium bundles, gift boxes, Build a Box experiences, Mix and Match offers, Fixed Bundles, byob & Custom Bundle to buy more. Grow AOV with a powerful Bundle Builder to Create and Buy personalized bundles. Build a Build a Box, Custom Bundle, or Mix and Match experience with Fixed Bundles, byob, addons, and a flexible Gift Box Builder. Let shoppers create the perfect gift box using Quantity Breaks, fixed pricing, and smart bundle rules. Optimize performance with Conversion Funnel Analytics. Create premium bundles, gift boxes, Build a Box experiences, Mix and Match offers, Fixed Bundles, byob & Custom Bundle to buy more. more Increase order value with Build a Box & Mix and Match Bundle Builder Reward bigger purchases with Fixed Bundles & Quantity Breaks Bundle Builder Create personalized gift boxes with Bundle Builder & Gift Box Builder & byob Launch custom bundle builder offers in minutes with no coding Monitor bundle builder performance with real-time conversion analytics
Bullseye’s Store Locator App is a sophisticated store, product, and dealer locator app. Bullseye’s Shopify Store Locator App can be added to your Shopify store in minutes without the help of a developer. Our HTML5, responsive interface is designed to serve up the optimal search interface regardless of the user’s device, location, or language (nearly 60 languages are supported). Bullseye Store Locator makes it easy for your customers to quickly find the locations nearby that carry your products or provide your services. Bullseye’s Shopify Store Locator App can be added to your Shopify store in minutes without the help of a developer. Our HTML5, responsive interface is designed to serve up the optimal search interface regardless of the user’s device, location, or language (nearly 60 languages are supported). Bullseye Store Locator makes it easy for your customers to quickly find the locations nearby that carry your products or provide your services. more Responsive mobile-friendly and SEO optimized locators, city, and local pages Fully customizable locator design ussing onboard tools, CSS, or Javascript Comprehensive backend for managing locations, including hours and more Robust and customizeable lead collection and management Full suite of reprting & analytics, as well as integration with Goole Analytics
Sell gift sets, multipacks & mix and match bundles with auto inventory sync & order fulfillment Increase AOV with product bundles that work like regular products in your store. Bundle Kit automatically syncs inventory, pricing, and weight in real-time — no manual updates needed. Create gift sets, multi-packs, or mix-and-match bundles with flexible pricing options. Component SKUs automatically add to orders for easy 3PL fulfillment. Built for reliability and performance, Bundle Kit works with all themes and sales channels. No coding required — install and start bundling in minutes. Increase AOV with product bundles that work like regular products in your store. Bundle Kit automatically syncs inventory, pricing, and weight in real-time — no manual updates needed. Create gift sets, multi-packs, or mix-and-match bundles with flexible pricing options. Component SKUs automatically add to orders for easy 3PL fulfillment. Built for reliability and performance, Bundle Kit works with all themes and sales channels. No coding required — install and start bundling in minutes. more Real-time inventory sync - Automatically updates to prevent overselling Multi-SKU order fulfillment - Breaks down bundles into component SKUs for 3PL Integrates with 3PL, WMS & POS - Seamless order and inventory management Multiple bundle types - Gift sets, multi-packs, mix-and-match, and more Works with all sales channels - POS, Online Store, and third-party apps
Create high-converting bundle offers and boost sales with quantity breaks and volume discounts! Bundle products and increase your sales with our bundle app! Easily create and manage bundle offers to boost revenue and attract more customers. Offer custom product bundles, apply discounts, and increase average order value effortlessly with upsell and cross sell offers. Perfect for Shopify stores looking to enhance their product mix and drive more sales. Start optimizing your bundles Shopify strategy today and watch your profits grow with bundles app! Bundle products and increase your sales with our bundle app! Easily create and manage bundle offers to boost revenue and attract more customers. Offer custom product bundles, apply discounts, and increase average order value effortlessly with upsell and cross sell offers. Perfect for Shopify stores looking to enhance their product mix and drive more sales. Start optimizing your bundles Shopify strategy today and watch your profits grow with bundles app! more Create & upsell bundles, discounts & quantity breaks in your shop! Set up classic bundles, Mix & Match bundles, quantity breaks, tiered discounts. Choose bundle discount type: percentage discount, fixed amount, fixed price etc. Increase conversions with bundle landing pages, shortcodes and cross sell offers Seamlessly integrate bundles with subscription products for recurring revenue
Busy Meter - Product processing and delivery estimates made easy Busy Meter helps merchants set clear customer expectations before an order is placed. Display dynamic processing and delivery promises that can vary by product, variant, collection, vendor, or your entire store. Order promises automatically adapt to your current workload, helping you communicate realistic timelines, reduce support requests, and improve the shopping experience. Busy Meter helps merchants set clear customer expectations before an order is placed. Display dynamic processing and delivery promises that can vary by product, variant, collection, vendor, or your entire store. Order promises automatically adapt to your current workload, helping you communicate realistic timelines, reduce support requests, and improve the shopping experience. more Display dynamic order processing and delivery promises Create promises for products, variants, collections, and more Automatically adjust promises based on store workload Customize the widget to match your store's branding Quick setup with no coding required
Increase conversions & boost sales with sticky add to cart bar, sticky cart & quick buy button. Turn visitors into buyers with sticky add to cart bar, sticky cart, sticky buy me button, and quick buy button that make shopping faster & checkout easier. Improve mobile shopping experiences, reduce cart abandonment & recover more sales with floating cart, cart preview, and instant purchase experiences designed to increase conversions & average order value. Use eye-catching animations, auto-match your store branding, and apply seasonal themes to create a smooth and engaging shopping experience. Turn visitors into buyers with sticky add to cart bar, sticky cart, sticky buy me button, and quick buy button that make shopping faster & checkout easier. Improve mobile shopping experiences, reduce cart abandonment & recover more sales with floating cart, cart preview, and instant purchase experiences designed to increase conversions & average order value. Use eye-catching animations, auto-match your store branding, and apply seasonal themes to create a smooth and engaging shopping experience. more Friendship Day Countdown: Create urgency with a timer to boost sales Sticky Add To Cart Bar + Countdown: Always visible with urgency boosting timer Introducing Sticky Cart: Simplify Checkout with an Always Visible Floating cart Quick Buy Button: Streamlining Purchases Directly from Homepage and Collections Remember My Cart: Seamlessly Access Your Cart Across Multiple Devices
If you need an easy way to automate multiple on-site content updates, then look no further! Tired of making updates in the middle of the night during your already hectic site sales events? If you need an easy way to automate on-site updates for your banners, site alerts, products, pages, grid sections and blog then look no further! There is finally an app that allows you to both create and schedule limitless site events, letting you rest while our automation engine does the work for you! This app is simple to install, easy to use, completely customizable & no coding skills required! Tired of making updates in the middle of the night during your already hectic site sales events? If you need an easy way to automate on-site updates for your banners, site alerts, products, pages, grid sections and blog then look no further! There is finally an app that allows you to both create and schedule limitless site events, letting you rest while our automation engine does the work for you! This app is simple to install, easy to use, completely customizable & no coding skills required! more Easily combine many various content updates into a single "Event" schedule Create & schedule unlimited "Events" to effortlessly maximize your sales efforts Content updates include Banners, Announcements, Products, Pages and MUCH MORE Create unlimited sections and place them anywhere on the site with Snippets Automation engine publishes your content updates exactly at the day/time you set
Let shoppers build custom boxes, kits, packs, and bundles with mix-and-match product selection. BYOB - Build Your Own Bundles helps merchants create build-a-box and mix-and-match bundle pages where shoppers choose their own products, unlock discounts, and add the full bundle to cart. It works well for snack boxes, gift boxes, sample packs, variety packs, kits, routines, and stores with large catalogs that need flexible product selection. Customize the bundle layout in the theme editor, promote bundles across your store. Explore sample bundles or contact us for a quick consultation. BYOB - Build Your Own Bundles helps merchants create build-a-box and mix-and-match bundle pages where shoppers choose their own products, unlock discounts, and add the full bundle to cart. It works well for snack boxes, gift boxes, sample packs, variety packs, kits, routines, and stores with large catalogs that need flexible product selection. Customize the bundle layout in the theme editor, promote bundles across your store. Explore sample bundles or contact us for a quick consultation. more Create build-a-box, mix-and-match, and custom product bundle pages Boost AOV with fixed price, tiered, BXGY, and multi-condition discounts Promote bundles from home page, collections, product pages, or navigation menu Track bundle page views to see whether shoppers are finding your bundles Customize bundle layouts and styling directly in the theme editor
Sell more by showcasing amazing lookbook and shoppable image with gallery and carousel upsell bundle Shoppers expect a seamless shopping experience. Upsell to your customers through curated lookbook carousel,image hotspots and image gallery offers. Showcase exact lookbook from product page or offer complementary products a la complete the look style. Shop the Look offers on-brand, shoppable image hotspot that boost sales through customized, recommended product upsell bundles across collections, cart page and product page. Optimised for mobile & no code is required! Shoppers expect a seamless shopping experience. Upsell to your customers through curated lookbook carousel,image hotspots and image gallery offers. Showcase exact lookbook from product page or offer complementary products a la complete the look style. Shop the Look offers on-brand, shoppable image hotspot that boost sales through customized, recommended product upsell bundles across collections, cart page and product page. Optimised for mobile & no code is required! more Build multiple lookbook & product page bundles that match your brand guidelines Lookbook format and shoppable images gallery with design that boost your sales In one click add get the look to cart from carousel and product page gallery Grow AOV by product page discount & lookbook shoppable image hotspot and gallery Premium 24/7 support: Pixel perfect shop the look and product page carousel
Engage Customers with Product Recommendations Quiz. AI, Drag & Drop, import/export for conversions. Create personalized product recommender quizzes and post-purchase surveys to tailor your customers' experience. With our easy-to-use no-code quiz builder, increase conversions and reduce returns! Customize pages easily with text, image, date and collect emails to ensure a unique brand experience that resonates. Create conditional jump logic rules & outcomes to upsell and recommend products. Gift finder & other templates with analytics help collect lead data for targeted recommendations! Create personalized product recommender quizzes and post-purchase surveys to tailor your customers' experience. With our easy-to-use no-code quiz builder, increase conversions and reduce returns! Customize pages easily with text, image, date and collect emails to ensure a unique brand experience that resonates. Create conditional jump logic rules & outcomes to upsell and recommend products. Gift finder & other templates with analytics help collect lead data for targeted recommendations! more Product Recommender Quizzes & Surveys: Import/export, QnA, text, image & email! Edit recommender quizzes: add layout design, templates, drag & drop, custom CSS Add conditional and jump logic to direct users to desired quiz or survey pages Add products/collections to Product Recommender pages with a Slot wise division! Klaviyo integration, Email & Text, Export Analytics to collect data & retarget.
Build high-converting mega menus, navigation, and bottom menu bars for online stores Improve store navigation with advanced mega menus, navigation menus, and bottom menu bars designed for better browsing and product discovery. Create multi-level dropdowns, tabbed menus, and structured layouts with full design control. Highlight products, collections, and promotions directly in menus. Fully customizable, mobile-friendly, and easy to manage without coding. Improve store navigation with advanced mega menus, navigation menus, and bottom menu bars designed for better browsing and product discovery. Create multi-level dropdowns, tabbed menus, and structured layouts with full design control. Highlight products, collections, and promotions directly in menus. Fully customizable, mobile-friendly, and easy to manage without coding. more Create multi-level mega menus with tabs and structured layouts Add products, collections, pages, and banners to improve discovery Customize colors, animations, hover effects, sliders, swipers & recommeded block Highlight key items and promotions using badges and icons Mobile-friendly navigation with 7 flexible layouts and responsive design
The product page will display variants in a table format with quantity box & add to cart button. C: Product Variants in Table allows you to list product attribute options on a product's details page in a table format with a quantity box and quick add to cart button. Quick add to cart creates positive online shopping experience for customers. Customers can select which product variant(s) they want to purchase, enter the quantity of each variant, and click add to cart to place all product variants and quantities into their shopping cart at once. C: Product Variants in Table allows you to list product attribute options on a product's details page in a table format with a quantity box and quick add to cart button. Quick add to cart creates positive online shopping experience for customers. Customers can select which product variant(s) they want to purchase, enter the quantity of each variant, and click add to cart to place all product variants and quantities into their shopping cart at once. more Provides an eye-catching listing of variants in a tabular format. Provides quick add to cart way for all variants. Easily customize your product table design, stock display, and price visibility. Add custom CSS, show stock status, enable call for price, and style your cart. Multi Language and Multi Currency Support via "Markets".
By utilizing the C: Year Make Model Search, your customers can efficiently discover products. Our C: Year Make Model Search App enables swift navigation through a vast product catalog across various stores such as Vehicle, Bike, Cars, Boats, Printer, Cartridges, Parts, Audio Systems, Air Conditioning and Electronics parts finder along with Tires and Wheels. Additionally, you can construct personalized search drop-downs according to specific categories such as Year Make Model Sub-Model Engine or Printer Brand Series Model or Wheel Width Diameter Offset for seamless browsing. Our C: Year Make Model Search App enables swift navigation through a vast product catalog across various stores such as Vehicle, Bike, Cars, Boats, Printer, Cartridges, Parts, Audio Systems, Air Conditioning and Electronics parts finder along with Tires and Wheels. Additionally, you can construct personalized search drop-downs according to specific categories such as Year Make Model Sub-Model Engine or Printer Brand Series Model or Wheel Width Diameter Offset for seamless browsing. more Manage YMM rows by adding them one by one or importing via CSV file. Use "Bulk YMM" to assign multiple YMM rows to multiple products at once. Use "Universal Products" to show in each result irrespective of search criteria. Get YMM information inside orders | Fitment Match and Compatibility Chart. URL Redirect Feature (Custom Redirect/Tag Based/Metafields Based Filtering)
Event calendar for your store, offering view-only, email signups, and the option to buy tickets. Calee helps you easily add Calendar Events to your storefront. You can create multiple event dates and showcase them on a calendar view or as a list view. You can take event signups or link to any product to buy event tickets. You can also import events from Google Calendar. The app is ideal for brands that want to showcase upcoming promotions, workshop calendar, product launches, event registration etc on event calender on their website. Calee helps you easily add Calendar Events to your storefront. You can create multiple event dates and showcase them on a calendar view or as a list view. You can take event signups or link to any product to buy event tickets. You can also import events from Google Calendar. The app is ideal for brands that want to showcase upcoming promotions, workshop calendar, product launches, event registration etc on event calender on their website. more Showcase upcoming events in Calendar View or List View. Set event as view-only, Email Sign Up or link to product to sell event tickets. Import events from Google Calendar. Setup Recurring Events like very month, every week etc. Contact support for customize calendar to match your brand’s aesthetics.
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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.