Gently nudge customers to purchase more with stunning free shipping, countdowns and more on any page No need to install multiple apps. BannerYear offers an all-in-one platform to effortlessly add smart, attention-grabbing banners to any page providing your customers a personalized shopping experience. Add captivating promotion announcements, countdown timers, progressive free shipping banners with icons and animations that guide and persuade shoppers towards additional purchases. Our banners, with compelling messages and striking visuals, not only engage customers but also makes your store pop. No need to install multiple apps. BannerYear offers an all-in-one platform to effortlessly add smart, attention-grabbing banners to any page providing your customers a personalized shopping experience. Add captivating promotion announcements, countdown timers, progressive free shipping banners with icons and animations that guide and persuade shoppers towards additional purchases. Our banners, with compelling messages and striking visuals, not only engage customers but also makes your store pop. more Nudge shoppers by showing how much more they need to purchase for Free Shipping. Drive FOMO w/ recurring, fixed minutes, date/time, repeatable Countdown clock. Alert shoppers of low inventory to encourage shoppers to purchase sooner. Add animated icons and confetti guaranteed to get your customer's attention. Rotate multiple announcements in one banner to showcase more promotions.
Custom CSS Shopify Apps
Discover the best Custom CSS apps for your Shopify store in 2025. Compare features, pricing, and reviews to find the perfect solution.
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Promote product with a variety of widgets Recently Viewed, Social Proof, and Recommendation… Looking for a solution to the annoying problem of multiple pop-up windows overlapping on your website? Sales Pop Total has you covered! Sales Pop Total is a collection of many different popups from Social Proof, Live counter, Recently view, Sticky Add To Cart, Upsell, and Cross-selling popups. All these Sales Pop Total windows will never overlap. This will give your customers a better experience on your website and help your website get more Inhouse Traffic. Looking for a solution to the annoying problem of multiple pop-up windows overlapping on your website? Sales Pop Total has you covered! Sales Pop Total is a collection of many different popups from Social Proof, Live counter, Recently view, Sticky Add To Cart, Upsell, and Cross-selling popups. All these Sales Pop Total windows will never overlap. This will give your customers a better experience on your website and help your website get more Inhouse Traffic. more Supports a variety of widgets Recently Viewed, Social Proof, Live Counter… Increase AOV by showing relevant recommendations based on user activity. Responsive design ensures all widgets look great on any device Full widget report and stats, including impressions, clicks, and actions. Customizable appearance options to match your brand.
Customize checkout using powerful checkout rules to streamline and boost checkout conversion. Take control of your checkout experience by conditionally showing, hiding, renaming, or reordering shipping and payment methods based on cart total, weight, address, items, tags, or other conditions. Set default options, block invalid checkouts, hide express payment buttons, move store pickup to the bottom, restrict PO Box shipping, apply discounts to orders or shipping methods, and more. Enhance customer satisfaction by streamlining your checkout. Take control of your checkout experience by conditionally showing, hiding, renaming, or reordering shipping and payment methods based on cart total, weight, address, items, tags, or other conditions. Set default options, block invalid checkouts, hide express payment buttons, move store pickup to the bottom, restrict PO Box shipping, apply discounts to orders or shipping methods, and more. Enhance customer satisfaction by streamlining your checkout. more Reorder/Rearrange shipping/payment methods on the checkout page. Hide payment/shipping methods by e-g Cart total, Product tag, Customer tag, etc. Set the default pre-selected shipping or payment method. Offer discounts. Hide express checkout payment buttons from the top of the checkout page. Hide shipping, e-g, UPS, or block checkout, if the address contains a PO box.
Add a terms and conditions checkbox for customers to acknowledge the stores terms before payments. With Agree Terms & Conditions checkbox showing up on cart page so the customers can opt in to terms and conditions before moving to payment page. Once enabled users will be able to click on checkout and complete order. This app will add agree enabled message which will show under Additional Details section of order. This app will give confidence to merchants that the user have read the terms and conditions of the store before completing the order. With Agree Terms & Conditions checkbox showing up on cart page so the customers can opt in to terms and conditions before moving to payment page. Once enabled users will be able to click on checkout and complete order. This app will add agree enabled message which will show under Additional Details section of order. This app will give confidence to merchants that the user have read the terms and conditions of the store before completing the order. more Fully Customizable Options to add Terms or Privacy Policy links in message Add Checkbox to Cart page or Slide Cart PopUp and Inline option to show Agree Terms Checkbox Mobile Responsive
With this app add External Links buttons on all pages | Amazon, Ebay, Whatsapp, Affiliate links BeUniq - External Links app will allow you to easily add external link buttons on blog article pages, Product pages and content pages. The app installation process is extremely easy and it does not require any manual code changes. Just enable the app and add blog external links & use it. It will help to bloggers to buy product from multiple interface. We there for you 24X7 for any type of assistance. Contact us for any help needed with the installation or anything else as well. BeUniq - External Links app will allow you to easily add external link buttons on blog article pages, Product pages and content pages. The app installation process is extremely easy and it does not require any manual code changes. Just enable the app and add blog external links & use it. It will help to bloggers to buy product from multiple interface. We there for you 24X7 for any type of assistance. Contact us for any help needed with the installation or anything else as well. more One Click Install - No coding skills required. Unique links for each blog article, page and product page. Multiple links Support. Add any custom link. Hide Add to cart on product page | Mobile compatible. You can customize the button style according to your theme design.
Boost order value with free progress shipping bar & updated cart goal. In today's world everybody seeks for FREE Shipping offers which acts as a bonus for users and highly increase in sales conversion. Our app highlights shipping goal with progress bar showing present status and more items that needs to be added to cart. Show progress with amount left to be added, forcing users to add more products to cart to achieve free shipping goal. Contact us for any help needed with the installation or anything else as well. In today's world everybody seeks for FREE Shipping offers which acts as a bonus for users and highly increase in sales conversion. Our app highlights shipping goal with progress bar showing present status and more items that needs to be added to cart. Show progress with amount left to be added, forcing users to add more products to cart to achieve free shipping goal. Contact us for any help needed with the installation or anything else as well. more One Click Install - No coding skills required. Progressive bar to promote shipping offers and increase sales conversions. Motivate clients to add more products to cart to achieve free shipping cart goal Edit the look and feel of your Free Shipping Progress bar to match your store. Works on mobile + web.
Skip to Checkout widget adds Buy Now button on Product page. Ability to skip cart page when clicked. An Animated "Buy Now" button will be available as widget in Theme Editor. The "Buy Now" button will skip the cart page and send users directly to Checkout. This will give users an option for quick purchasing their required products. Easy settings available for merchants for setting up the button. It provides a great user experience in terms of web and mobile experience and increases conversion as well. An Animated "Buy Now" button will be available as widget in Theme Editor. The "Buy Now" button will skip the cart page and send users directly to Checkout. This will give users an option for quick purchasing their required products. Easy settings available for merchants for setting up the button. It provides a great user experience in terms of web and mobile experience and increases conversion as well. more Skip the cart page and send users straight to Checkout. Shopify 2.0 Theme widget Edit the look and feel of your Buy Now button. Add animations to Buy now button. Single product or Mixed cart
Size Chart App to easily add and customize Image, Video & PDF Size Quides for all your products. With Beuniq Size Chart, merchants can easily add their size chart in form of image, pdf, editor table or video for easy understanding of the users to the size they want to buy. The app provides option to show the size as link or button which when clicked, popup is shown. With multiple settings options the merchants can create size chart link as per their themes look and feel. You can either show size chart either as pop up or inline with easiest way to relocate size chart on product page. With Beuniq Size Chart, merchants can easily add their size chart in form of image, pdf, editor table or video for easy understanding of the users to the size they want to buy. The app provides option to show the size as link or button which when clicked, popup is shown. With multiple settings options the merchants can create size chart link as per their themes look and feel. You can either show size chart either as pop up or inline with easiest way to relocate size chart on product page. more Reduce Return Rate Use the app for sizing charts to convert cm/ inches automatically. Upload Size charts in form of Image | PDF | Video | Editor table Size chart as Pop up or Inline. Easy step to relocate size chart link Desktop & Mobile compatible / Show as Link or Button which will open PopUp
Transform Visitors into Your Sales fleet Bevy Share Cart adds a sleek share button to your store's cart page, allowing customers to share their shopping carts on social media with a single click. When recipients click the shared link, they can instantly replicate the exact cart and proceed to checkout, creating a seamless social shopping experience. Bevy Share Cart seamlessly integrates with your Shopify store, adding a powerful social sharing capability that helps expand your reach and drive conversions. Bevy Share Cart adds a sleek share button to your store's cart page, allowing customers to share their shopping carts on social media with a single click. When recipients click the shared link, they can instantly replicate the exact cart and proceed to checkout, creating a seamless social shopping experience. Bevy Share Cart seamlessly integrates with your Shopify store, adding a powerful social sharing capability that helps expand your reach and drive conversions. more Track cart sharing activity and revenue generated from shared carts Choose between automatic or manual installation to fit your store setup Select from pre-built themes or customize to match your brand identity Incentivize sharing by rewarding customers who share their carts (PRO)
Size Chart App to easily add and customize size charts & size guides for all your products. Create clean size charts for all your size variations. Customize with text and images in our custom text boxes. For tshirts, apparel brands, shoe size charts, & detail body measurement. Create smart size charts based on collections and product tags. Previously known as Best Fit Size Charts. Use with Vajro, seize charte, image size chart, VO Product option, product page size chart, apparel, fb size chart pop up, size guide app, sizing guide Create clean size charts for all your size variations. Customize with text and images in our custom text boxes. For tshirts, apparel brands, shoe size charts, & detail body measurement. Create smart size charts based on collections and product tags. Previously known as Best Fit Size Charts. Use with Vajro, seize charte, image size chart, VO Product option, product page size chart, apparel, fb size chart pop up, size guide app, sizing guide more BF Sizechart app built to reduce returns, because size matters on every product. Use our sizeguide app for sizing charts to convert cm/ inches measurements. Build your BF Sizing Chart and add a size table on your product pages. Use as a jewelry ring size chart and ring sizer app as a size finder Responsive & clean size chart app, size app, fit finder, & sizing guide
Attract customers, increase the time spent on the site, boost conversion, and grow your sales! Just one app for onsite marketing allows you to create and add high-converting bars and banners to your store. A lot of promotion banners are available - easy setup and flexible customization from simple banners to a slide show. Multi Announcement Banner Slider, Action Bar, Single Announcement Bar, Sales Motivation Bar, Email Sign-up Bar, Coupon Bar, Free Shipping Bar, Countdown Timer Bar, Cookie Consent Bar, Add To Cart Bar, Global Location Bar are ready to boost your sales! Just one app for onsite marketing allows you to create and add high-converting bars and banners to your store. A lot of promotion banners are available - easy setup and flexible customization from simple banners to a slide show. Multi Announcement Banner Slider, Action Bar, Single Announcement Bar, Sales Motivation Bar, Email Sign-up Bar, Coupon Bar, Free Shipping Bar, Countdown Timer Bar, Cookie Consent Bar, Add To Cart Bar, Global Location Bar are ready to boost your sales! more A lot of banner types in one application Analytics and A/B testing Customizable and responsive Show banners on schedule Audience targeting by device, location
Make beautiful bundle builders, mix and match product bundles, build a box & build your own bundles. Biscuits Bundles is a bundle builder that lets your customers mix and match products. Allow customers to create 'build your own bundles' that boost average order value. Apply different pricing rules including volume discounts or quantity breaks, complex selection criteria, or enforce quantity limits. Easy theme integration via app blocks. Perfect for mix and match product bundles, personalised kits & gift sets. Requires OS 2.0 theme and Bundles eligibility. Does not support subscriptions. Biscuits Bundles is a bundle builder that lets your customers mix and match products. Allow customers to create 'build your own bundles' that boost average order value. Apply different pricing rules including volume discounts or quantity breaks, complex selection criteria, or enforce quantity limits. Easy theme integration via app blocks. Perfect for mix and match product bundles, personalised kits & gift sets. Requires OS 2.0 theme and Bundles eligibility. Does not support subscriptions. more Create collapsible steps to guide customers through their choices. Control minimum/maximum selections, display options, and total quantity limits. Fixed price, sum of selections, amount/percentage off, or volume discounts. Customise the look inside the theme editor with advanced options for developers Discounts applied to line items, so you can still use discount codes at checkout
Unlimited login with Apple, Google, WhatsApp OTP—one-click sign-in. Grow your list with smart forms. bitLogin transforms every customer sign-in into a powerful growth opportunity. With over ten login options like Apple, Google One Tap, and WhatsApp OTP, your customers enjoy quick, secure access. Our smart, customizable forms capture valuable first-party data, giving you the insights to build targeted marketing campaigns and grow your contact list. Ideal for merchants seeking to streamline signups and drive conversions. bitLogin transforms every customer sign-in into a powerful growth opportunity. With over ten login options like Apple, Google One Tap, and WhatsApp OTP, your customers enjoy quick, secure access. Our smart, customizable forms capture valuable first-party data, giving you the insights to build targeted marketing campaigns and grow your contact list. Ideal for merchants seeking to streamline signups and drive conversions. more Enable 10+ social logins: Google, Instagram, WA, FB, Apple & more in one click WhatsApp OTP for secure sign‑in Collect first-party customer data to power personalized marketing Boost conversions with engaging sign-up and voucher pop-ups Leverage Magic Link, Google One Tap, and effortless mobile app logins
Bundle as standalone products. Sync bundle inventory in real-time. Fulfill multi-SKU bundles to 3PL. Use Bundle Kit to display multi-variant bundles as standalone products in your store's catalog. Sync inventory of bundle product and bundle items sold in real-time to avoid overselling. Optionally add individual bundle item SKUs as line items to bundle orders for multi-SKU 3PL fulfillment. Bundle Kit prioritizes reliable performance above all. No code required - simply install the app and start selling your bundle kits! Use Bundle Kit to display multi-variant bundles as standalone products in your store's catalog. Sync inventory of bundle product and bundle items sold in real-time to avoid overselling. Optionally add individual bundle item SKUs as line items to bundle orders for multi-SKU 3PL fulfillment. Bundle Kit prioritizes reliable performance above all. No code required - simply install the app and start selling your bundle kits! more Kits (e.g. Soft Skin Body Routine 'Kit', Day & Night Routine for Dry Skin ‘Kit’) Multipacks (e.g. ‘3-Pack' Organic Cotton T-Shirts, ‘5-Pack’ Long Sleeve Tees) Tiered products (e.g. ‘Basic’ Fruit Basket, ‘Premium’ Fruit Basket) Boxes (e.g. Gift box, Subscription box, Mystery box) Mix and match (e.g. 'Twin / Queen / King' Sized Bed + 'With / Without' Pillow)
Blockify Age verification popup: Age check, Age verify, Safeguard Store, Ensure Legal Compliance Blockify - Age Verifier: Safeguard your Shopify store and maintain legal compliance & privacy with our fully customizable 18+, 21+ age verification popup - no coding required! Effortlessly set up age verification using the birth date option. Limit age or set age restrictions on accessing your store and age checkout. With our age verification app, you can swiftly create a secure age checker and compliant website in just a few clicks. Blockify - Age Verifier: Safeguard your Shopify store and maintain legal compliance & privacy with our fully customizable 18+, 21+ age verification popup - no coding required! Effortlessly set up age verification using the birth date option. Limit age or set age restrictions on accessing your store and age checkout. With our age verification app, you can swiftly create a secure age checker and compliant website in just a few clicks. more Age verifier: Ensure legal compliance with the Age Verification Popup Set a minimum age requirement with Date of Birth verification Choose from age popup templates or customize them to match your store branding Restriction age popup looks good on different screen resolutions Restrict access to all pages or specific pages of your store
Intelligent search and merchandising that drives immediate ROI and RPV. Bloomreach Discovery offers AI-Driven product discovery focused on ROI. It leverages Loomi, our industry leading AI for ecommerce, to further drive product discovery. The Bloomreach Discovery x Shopify connector significantly simplifies your implementation to make sure pixel data from your storefront is fed appropriately into Bloomreach Discovery. Build your storefront quicker with a templated search UI and components for search results pages, facets and autosuggest. Bloomreach Discovery offers AI-Driven product discovery focused on ROI. It leverages Loomi, our industry leading AI for ecommerce, to further drive product discovery. The Bloomreach Discovery x Shopify connector significantly simplifies your implementation to make sure pixel data from your storefront is fed appropriately into Bloomreach Discovery. Build your storefront quicker with a templated search UI and components for search results pages, facets and autosuggest. more Autosuggest guides your site visitors and maximizes relevance of search results Search & category pages make it easy for shoppers to navigate your products. Bloomreach Recommendations displays recommended products powered by our Loomi AI
Sell more with free shipping bar, progress bar & product upsell in cart drawer & more BlueCart displays your free shipping bar, discount & reward milestones progressively using progress bar and checklist based on cart value and show prices based on user's market. This makes it easier for customers to track their progress toward greater discounts, motivating them to add more product to cart, ultimately increasing the average order value (AOV). With product upsell & tiered progress bar, customer will be enticed to add more product to cart maximising the available offers! BlueCart displays your free shipping bar, discount & reward milestones progressively using progress bar and checklist based on cart value and show prices based on user's market. This makes it easier for customers to track their progress toward greater discounts, motivating them to add more product to cart, ultimately increasing the average order value (AOV). With product upsell & tiered progress bar, customer will be enticed to add more product to cart maximising the available offers! more Add progress bar and cart upsell anywhere with app extension & shortcode Display conditions to target buyers from different markets, tags, UTM & more Auto convert currencies or set a specific goal based on buyer's market Comprehensive design options with pre-defined styles to match your theme Upsell with specific, related and complementary products
Boost AOV with BOGO, Buy x get y, Free gift with purchase, Bundle, Volume Discount, Checkout Upsell BOGOS (formerly Free Gifts by Secomapp) is a one-stop app for creating BOGO, Free gift with purchase, Bundles, Discounts, and Upsells — all powered by intuitive, fully customizable widgets. Over the past 11 years, BOGOS has helped leading brands worldwide run offers perfectly, generate billions in orders while elevating shopping experience. It also provides specific targeting, real-time analytics, translation, and AI assistant. Prompt chat and technical support are always available. BOGOS (formerly Free Gifts by Secomapp) is a one-stop app for creating BOGO, Free gift with purchase, Bundles, Discounts, and Upsells — all powered by intuitive, fully customizable widgets. Over the past 11 years, BOGOS has helped leading brands worldwide run offers perfectly, generate billions in orders while elevating shopping experience. It also provides specific targeting, real-time analytics, translation, and AI assistant. Prompt chat and technical support are always available. more Offer Free gift, Buy one get one free, BXGY with auto add to cart, gift pop-up Create Classic bundle, Mix and match & Bundle builder (Build a box) Set up Volume discount and Discount on the cheapest or most expensive item Add Checkout upsell, Frequently bought together & Thank you page upsell Promote offers with progess bar, today offer, gift icon & gift thumbnail
Increase AOV and boost sales with strategic upselling techniques like BOGO, Buy X Get Y, free gifts, Bogox enhances AOV and optimizes upselling through automated discounts, fully compatible with popular promotions such as BOGO, Buy X Get Y (e.g., Buy 2 Get 1), and Volume Discounts. Effortlessly drive conversions with tiered offers and complimentary gifts (e.g., Buy Product A – receive free samples). Motivate higher spending with in-cart upsell pop-ups, one-click upsells, checkout add-ons, free shipping incentives, and free gifts with purchase. Bogox enhances AOV and optimizes upselling through automated discounts, fully compatible with popular promotions such as BOGO, Buy X Get Y (e.g., Buy 2 Get 1), and Volume Discounts. Effortlessly drive conversions with tiered offers and complimentary gifts (e.g., Buy Product A – receive free samples). Motivate higher spending with in-cart upsell pop-ups, one-click upsells, checkout add-ons, free shipping incentives, and free gifts with purchase. more Drive higher AOV through BOGO deals, bundled offers, and free gift incentives Upsell at every stage – product page, cart, and checkout Show pre-purchase upsell popups with smart auto-applied discounts Fully personalize embedded and pop-up upsell offers Instant insights to help you track and optimize sales effectively
Personalized + AI Upsell & Cross-Sells. Upsell in Checkout + Post Purchase, Product & Cart Drawer! NEW PLANS LIVE! Pay for VIEWS, not your store's orders! Boost AOV w/ upsells and cross-sells that show the best offer to the best customers. Smart AI Upsell offers automatically show the highest-converting deals. Easily switch between AI and manual. Build high-conversion funnels with CRO upsells, frequently bought together cross-selling, down-sells or order bumps. Upsell, cross-sell or down-sell on product pages, in cart, drawers, at checkout and with post-purchase one-click upselling via email! NEW PLANS LIVE! Pay for VIEWS, not your store's orders! Boost AOV w/ upsells and cross-sells that show the best offer to the best customers. Smart AI Upsell offers automatically show the highest-converting deals. Easily switch between AI and manual. Build high-conversion funnels with CRO upsells, frequently bought together cross-selling, down-sells or order bumps. Upsell, cross-sell or down-sell on product pages, in cart, drawers, at checkout and with post-purchase one-click upselling via email! more Upselling + Cross-Selling! True Upsell and SMART AI Cross-Sell Recommendations Upsell on product pages, cart, cart drawer, in + after checkout, & email upsells Use Upsell w/ Bold’s Subscription App to turn one-time shoppers into subscribers Upsells and cross-sells performance analytics, data dashboard & weekly summaries Easy app setup! No-coding! Fully customizable w/ automated upsells built for you
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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.