Grow every order with a slide cart drawer, cart upsell, progress bar, sticky add to cart, free gift. Give shoppers a faster checkout with a sticky add to cart bar (variant & quantity pickers) and a slide cart drawer. Lift AOV with AI cart upsell and cross-sell that can work with subscription or tiered offers, plus a progress bar and free shipping bar that unlock a free gift. Shoppers can apply a cart discount, add notes, and pick cart add-ons like gift wrapping or shipping protection. A floating sticky cart with full customization, theme sync, trust badges; works w/ Shopify Discounts & Bundles. Give shoppers a faster checkout with a sticky add to cart bar (variant & quantity pickers) and a slide cart drawer. Lift AOV with AI cart upsell and cross-sell that can work with subscription or tiered offers, plus a progress bar and free shipping bar that unlock a free gift. Shoppers can apply a cart discount, add notes, and pick cart add-ons like gift wrapping or shipping protection. A floating sticky cart with full customization, theme sync, trust badges; works w/ Shopify Discounts & Bundles. more Slide cart drawer: Allows shoppers to view cart without leaving current page Progress bar: Incentivize purchases w/ free gift, tier goals, free shipping bar AI cart upsell: Recommend related items, gift wrapping, discount code box Sticky add to cart: Always-visible add to cart button during products scroll More widgets & add-ons: Trust badges, subscription, order note, announcement bar
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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Quick Announcements builder, Create alerts & notices with ease. Quick Notice Clear Alert is your solution to keeping your customers informed and engaged. Whether it’s sharing order updates, announcing promotions, or delivering personalized alerts, this app is designed to streamline communication effectively. Quick Notice Clear Alert is your solution to keeping your customers informed and engaged. Whether it’s sharing order updates, announcing promotions, or delivering personalized alerts, this app is designed to streamline communication effectively. more Real-Time Alerts: Ensure customers never miss an important update. Fully Customizable: Tailor the appearance and content to match your store's bran Seamless Integration: Works effortlessly with your Shopify store. Boost Trust & Loyalty: Transparent communication builds lasting relationships. Easy Setup – Get started in minutes without technical expertise.
Quick View maker app allows users to view products without opening the product page quickly Quick View Maker app provides the user quick access to the product information with smooth animation. This step saves time and gives a faster and much more intuitive browsing experience. Quick View is essential feature for online stores. The more you can show your product details to your customers, the more conversions you will get. When a customer searches for products on a store, they want the process to be fast. They want to explore the maximum number of products in the shortest possible time Quick View Maker app provides the user quick access to the product information with smooth animation. This step saves time and gives a faster and much more intuitive browsing experience. Quick View is essential feature for online stores. The more you can show your product details to your customers, the more conversions you will get. When a customer searches for products on a store, they want the process to be fast. They want to explore the maximum number of products in the shortest possible time more Quick look at products without opening the product page and quickly add to cart Highly adaptable view for all screen resolutions, laptops or mobile devices Fully customizable quick-view and pop-up button design, you can easily customize Trust badges and upload trust badges, Stunning 15 different popup effects Color Swatch Option, Quick button settings, Customization quick view content
Create targeted announcement bars, countdowns, and free shipping offers. Launch in minutes. Quicky helps merchants promote offers and important updates without editing theme code. Create announcement, countdown, free shipping, coupon, email signup, cookie consent, and multi-message bars from one editor. Customize each design for desktop and mobile, schedule campaigns, localize messages, and target shoppers by page, device, location, domain, or market. Use analytics and A/B testing to understand which messages perform best. Quicky helps merchants promote offers and important updates without editing theme code. Create announcement, countdown, free shipping, coupon, email signup, cookie consent, and multi-message bars from one editor. Customize each design for desktop and mobile, schedule campaigns, localize messages, and target shoppers by page, device, location, domain, or market. Use analytics and A/B testing to understand which messages perform best. more Create announcement, countdown, free shipping, coupon, and signup bars Target campaigns by page, device, country, domain, and market Schedule banners and localize messages for different audiences Run multi-announcement sliders and multiple active campaigns Track results and compare variants with analytics and A/B testing
Quiz app: Grow store sales and customer AOV with AI-powered product quizzes Create a product recommendation quiz, such as a skin quiz or skincare quiz, to personalize shopping sessions and boost AOV. Use AI results to build your product finder quiz results in minutes. Describe what to recommend and AI builds the results for you. Deploy the AI Shopping Assistant for guided selling. Capture emails, build a better quiz app funnel through logic branching, and optimize performance with analytics and A/B testing. Easily migrate from Octane AI, Typeform, RevenuHunt, Quizell. Create a product recommendation quiz, such as a skin quiz or skincare quiz, to personalize shopping sessions and boost AOV. Use AI results to build your product finder quiz results in minutes. Describe what to recommend and AI builds the results for you. Deploy the AI Shopping Assistant for guided selling. Capture emails, build a better quiz app funnel through logic branching, and optimize performance with analytics and A/B testing. Easily migrate from Octane AI, Typeform, RevenuHunt, Quizell. more AI results: Describe your recommendations in plain language. AI Shopping Assistant helps customers find products and upsells Personalized shopping quiz with logic branching and customization Optimize product quiz conversion and AOV via analytics and A/B testing Easy migration from Octane AI, Typeform, RevenuHunt, Quizell, Quizify, & Lantern
Create product recommendation Quiz. Collect leads and increase revenue through personalized results. Quizify is a web-powered quiz builder that allows e-commerce stores to deliver personalized product recommendations to their customers. Often, customers leave the website without a purchase because they cannot settle on the right product. Online shoppers need guidance in finding what they want, just like in real shops. With Quizify, you can ask questions, analyze their responses, and recommends the right products for them. Understand customers’ needs and create higher ROI marketing campaigns. Quizify is a web-powered quiz builder that allows e-commerce stores to deliver personalized product recommendations to their customers. Often, customers leave the website without a purchase because they cannot settle on the right product. Online shoppers need guidance in finding what they want, just like in real shops. With Quizify, you can ask questions, analyze their responses, and recommends the right products for them. Understand customers’ needs and create higher ROI marketing campaigns. more Easy to use, super user friendly Quiz builder design! Attractive quiz templates. Increase sales & decrease returns by finding right product your customers need. Direct, Tag, Score and Type based product recommendation to cover all your needs Conditional logic - Automatically jump, show, or hide questions based on answers Powerful analytics and actionable insights to target customer with accurate data
Convert more with tailored product recommendation quizzes powered by AI, surveys and giveaways. Turn browsers into buyers with interactive quizzes that offer prizes and personalized product matches. Create compelling giveaway contests in minutes with our drag-and-drop quiz builder. Merchants can easily set up product-matching quizzes that reward participation with special offers, discounts, or free products. Perfect for beauty fit quizzes, style assessments, and product discovery contests. Boost engagement, capture leads, and increase conversions while gathering valuable customer insights. Turn browsers into buyers with interactive quizzes that offer prizes and personalized product matches. Create compelling giveaway contests in minutes with our drag-and-drop quiz builder. Merchants can easily set up product-matching quizzes that reward participation with special offers, discounts, or free products. Perfect for beauty fit quizzes, style assessments, and product discovery contests. Boost engagement, capture leads, and increase conversions while gathering valuable customer insights. more Create engaging giveaway quizzes with drag-and-drop simplicity Drive higher engagement with customizable rewards, discounts, and giveaways Seamlessly integrate with your existing store design and product catalog
Boost your (B2B) store sales by adding a beautiful quote request experience for your customers. Enhance your (B2B) store experience with Quotify. Empower customers to request a quotes for any product, perfectly fitting your business model. Streamline your quote process with a tailored flow, collect essential customer information, and send AI personalized proposals. Utilize Google Analytics for insightful quote funnel optimization and integrate Zapier for efficient automation. Upgrade your b2b wholesale / b2b quote strategy with Quotify! Capture every B2B lead with our quote form. Enhance your (B2B) store experience with Quotify. Empower customers to request a quotes for any product, perfectly fitting your business model. Streamline your quote process with a tailored flow, collect essential customer information, and send AI personalized proposals. Utilize Google Analytics for insightful quote funnel optimization and integrate Zapier for efficient automation. Upgrade your b2b wholesale / b2b quote strategy with Quotify! Capture every B2B lead with our quote form. more Unlimited quote requests to never miss a chance to close the deal Build your request quote form to get the information you need from your customer Quotify can be translated in your preferred languages with just a few clicks Send proposals to customers and automatically convert to orders when accepted Allow customers to browse and add products directly to their quote request
Prevent customers from checking out until they agree to your terms and conditions. Add a T&C checkbox to the cart in 1 click. Customers are required to agree to the terms to checkout. This cart checkbox allows you to add a refund policy, shipping policy, terms at checkout, agree box, age verify, and request consent for the general conditions of sale. Accept terms of acknowledgment & create a checkout terms and conditions box, a required checkbox/ mandatory checkbox at checkout. Terms box, Consent Checkbox. Terms Check Box. Withdraw Order, EU Compliance, EU Directive 2023/2673 Add a T&C checkbox to the cart in 1 click. Customers are required to agree to the terms to checkout. This cart checkbox allows you to add a refund policy, shipping policy, terms at checkout, agree box, age verify, and request consent for the general conditions of sale. Accept terms of acknowledgment & create a checkout terms and conditions box, a required checkbox/ mandatory checkbox at checkout. Terms box, Consent Checkbox. Terms Check Box. Withdraw Order, EU Compliance, EU Directive 2023/2673 more Adds a check box to cart for agreement, TOS, cart terms, EULA, and return policy Checkout checkbox works with express checkout: PayPal, Apple Pay, and Shop Pay Logs date & time when the I agree to terms checkbox is checked before checkout Terms & Conditions box: terms of service, privacy policy, policies, contracts. Ensures security & privacy and compliance with age check and agree terms check
Raveo helps you to display video reviews and your tiktok videos in a tiktok like feed Raveo helps you to easily include your TikTok videos or the videos by your customers in your online store easily.You can easily create a TikTok video gallery and embed it in your store. Your customers can view and see products related to this video and increase the trust of your customers. Raveo helps you to easily include your TikTok videos or the videos by your customers in your online store easily.You can easily create a TikTok video gallery and embed it in your store. Your customers can view and see products related to this video and increase the trust of your customers. more Import Tiktok videos Tag products in the video Extremely fast & responsive in all screens
The only Search & Discovery app powered by Google Product search and discovery is one of the most important website experiences, but it can be very difficult. Google's AI Commerce Search is an enterprise solution that increases conversions and reduces search abandonment without needing to become an expert in machine learning or AI. Retail Cloud Connect by Nimstrata, a certified Google Cloud partner, syncs your Shopify catalog with Google Cloud and returns world-class AI-powered search, browse, and recommendations on your storefront in minutes. Product search and discovery is one of the most important website experiences, but it can be very difficult. Google's AI Commerce Search is an enterprise solution that increases conversions and reduces search abandonment without needing to become an expert in machine learning or AI. Retail Cloud Connect by Nimstrata, a certified Google Cloud partner, syncs your Shopify catalog with Google Cloud and returns world-class AI-powered search, browse, and recommendations on your storefront in minutes. more Enable all Google Cloud AI Commerce Search solutions with one app Maintain full control of your data and merchandising settings in Google Cloud Simplify merchandising efforts by adding AI browsing to your collection pages Install quickly on your existing Shopify Online Store 2.0 themes with App Blocks Leverage pre-built CSS classes for easy customization to match your branding
AI-powered product recommendations & search: cart, checkout, post-purchase upsells, and A/B testing Rebuy personalizes every step of the shopping journey with AI-powered upsells, cross-sells, and smart product discovery and merchandising tools. Our core packages — Cart & Merchandising, Checkout & Post Purchase, Search & Collections, and Flows & A/B Testing — help brands boost AOV and LTV. Plus, Rebuy Monetize unlocks new, incremental post-purchase profit! Convert more and grow faster with flexible no-code, low-code, and custom code solutions trusted by top Shopify stores. Rebuy personalizes every step of the shopping journey with AI-powered upsells, cross-sells, and smart product discovery and merchandising tools. Our core packages — Cart & Merchandising, Checkout & Post Purchase, Search & Collections, and Flows & A/B Testing — help brands boost AOV and LTV. Plus, Rebuy Monetize unlocks new, incremental post-purchase profit! Convert more and grow faster with flexible no-code, low-code, and custom code solutions trusted by top Shopify stores. more AI-powered search, end-to-end personalization, upsells, bundles, and cross-sells Smart Cart is an easily customizable, AI-powered, slide-out cart Data-fueled product recommendations in checkout and accelerated checkout Build engagement with Post-Purchase, Re-Order Landing Pages, and Smart Flows Industry-leading integrations through every step of the customer's journey
Allow customers make order edits themselves to change address, cancel orders, edit cart items, etc Improve your post purchase customer experience by allowing them to edit orders right from the Thank You and Order Status pages. You have full control over what order editing you want to allow like address edits, replacing products, editing cart items and order cancellation. Recheck also helps you create post purchase upsell offers which can be shown on these pages and in emails to further increase your AOV. Recheck also works out of the box with any 3PL / warehouse management software. Improve your post purchase customer experience by allowing them to edit orders right from the Thank You and Order Status pages. You have full control over what order editing you want to allow like address edits, replacing products, editing cart items and order cancellation. Recheck also helps you create post purchase upsell offers which can be shown on these pages and in emails to further increase your AOV. Recheck also works out of the box with any 3PL / warehouse management software. more Let customers edit shipping address, change variant, products, shipping method Control the order editing duration & what your customers can edit in their order Set up post purchase upsell offers on the Thank You and Order Status pages. Edit orders to allow size / variant change and quick swap with price adjustment. Shopify Flow integration to enable complex order editing and marketing flows.
Add smart related products to your store. They match your theme, improve navigation and boost sales. Help your customers find what they are looking for and make them more likely to buy from you with smarter related products that are easy to install, fit your styles and significantly outperform themes-provided ones. Our app combines sales data and dozens of attributes to automatically show items that make sense to your customers and have the maximum effect on your conversions. It can also be fine-tuned to your specific needs. Check the impact on your sales with detailed conversion tracking. Help your customers find what they are looking for and make them more likely to buy from you with smarter related products that are easy to install, fit your styles and significantly outperform themes-provided ones. Our app combines sales data and dozens of attributes to automatically show items that make sense to your customers and have the maximum effect on your conversions. It can also be fine-tuned to your specific needs. Check the impact on your sales with detailed conversion tracking. more Add related products sections to your store directly from the theme editor. Customize the look, manually fine-tune the logic, or let us do it for you. Check the impact on your sales with detailed reporting and conversion data.
Quiz app to boost sales, grow your email list, and turn shoppers into buyers with product quizzes. Quiz Builder lets you create a personalized product recommendation quiz to help each customer find their ideal product. Turn product finder quizzes into your 24/7 online sales assistant. Whether it's a skin quiz(skincare quiz), style quiz, gift quiz, personality quiz, scored quiz, hair quiz, vitamin quiz, pet quiz or questionnaire, your customers deserve a personalized shopping journey. Product discovery quizzes are the best way to increase sales and get insights about your target market. Quiz Builder lets you create a personalized product recommendation quiz to help each customer find their ideal product. Turn product finder quizzes into your 24/7 online sales assistant. Whether it's a skin quiz(skincare quiz), style quiz, gift quiz, personality quiz, scored quiz, hair quiz, vitamin quiz, pet quiz or questionnaire, your customers deserve a personalized shopping journey. Product discovery quizzes are the best way to increase sales and get insights about your target market. more Build a product quiz, quiz funnel, and pop up quiz for your e-commerce shop. Style your quiz to match your store’s look— colors, fonts, images, and more. Use Logic Jump for dynamic paths and a Point System for custom recommendations. Create a personality test and questionnaire with custom result pages in minutes. 5 publish type: Inline Quiz, Popup Quiz, Quiz on Button Click, Separate Page etc
Show Related Products on any product , visitors always search for different colors and similar style * Now you can create new arrivals slider / grid. * You can showcase trending products. * Create hot products, featured products slider. * You can showcase all widgets (new arrivals, trending products and featured products) on homepage, collection page, product page, blog page, cart page. # You can customize Related Products * Number of Related Products in a row * Related Products Title , font size and color. * Customize price color , vendor color, product type color. * Now you can create new arrivals slider / grid. * You can showcase trending products. * Create hot products, featured products slider. * You can showcase all widgets (new arrivals, trending products and featured products) on homepage, collection page, product page, blog page, cart page. # You can customize Related Products * Number of Related Products in a row * Related Products Title , font size and color. * Customize price color , vendor color, product type color. more Related Products app can show Products from same collections , type , tags . The app checks the tags of current product and fetches the Products by tags New Features : Added new arrivals , trending products , hot products feature
Create a 1-Click COD order form with Upsells, Downsells & Offers to increase conversion rate and AOV With Releasit, customers can order instantly using a 1-Click COD form as a popup or advanced Cash on Delivery without Shopify Checkout. Build customizable COD forms with Upsells, Downsells, and Quantity Offers to increase AOV. Reduce fake orders with OTP phone verification (SMS/WhatsApp). Track events with Facebook, TikTok, Google, Pinterest & Snapchat. Sync orders to Google Sheets. Run A/B Tests on 1-Click Upsells to compare variants and performance. Multi-currency support via Shopify Markets. With Releasit, customers can order instantly using a 1-Click COD form as a popup or advanced Cash on Delivery without Shopify Checkout. Build customizable COD forms with Upsells, Downsells, and Quantity Offers to increase AOV. Reduce fake orders with OTP phone verification (SMS/WhatsApp). Track events with Facebook, TikTok, Google, Pinterest & Snapchat. Sync orders to Google Sheets. Run A/B Tests on 1-Click Upsells to compare variants and performance. Multi-currency support via Shopify Markets. more Fully customizable COD order form & layout (Popup/Embedded) with multi-currency Upsells (Pre/Post Purchase, One-Tick), Downsells, Quantity Offers & A/B Testing Track events automatically with Facebook, TikTok, Google, Pinterest, Snapchat Use Google Sheets, Google Autocomplete, discounts & abandoned checkouts recovery Phone verify with OTP, limit postal codes, block IPs & confirm via SMS/WhatsApp
Add custom fields on the cart page. Request the information you need to fulfill orders. With our app, you can easily add custom fields to your cart page, and optionally make them required. Customers won't be able to visit the checkout area unless they fill out the information you need. The captured information is saved with Shopify and available to you in the order page. It can also be exported, displayed in emails and order printouts etc. The app supports the newest theme format known as Online Store 2.0. With our app, you can easily add custom fields to your cart page, and optionally make them required. Customers won't be able to visit the checkout area unless they fill out the information you need. The captured information is saved with Shopify and available to you in the order page. It can also be exported, displayed in emails and order printouts etc. The app supports the newest theme format known as Online Store 2.0. more Field types: Text, Number, Checkbox, Radio, Dropdown, Combobox, and Text area. Simple drag and drop install process, built into the Theme Editor. Field data is saved in Shopify and easily accessible on the order page. Efficient code served from Shopify's servers — minimal impact on store speed. Captured information can be exported and displayed using Liquid code.
Custom-fit your sales with dynamic, easy-to-edit and personalized size charts. Retailed Size Chart & Guide is your key to reducing returns and boosting conversions. Designed for Shopify merchants, our app empowers you to create tailored size charts with no coding required. Whether you're selling sneakers, apparel, accessories, or bespoke items, our solution simplifies size guidance, ensuring your customers find their perfect fit. Reduce sizing confusion and enhance shopping experience — all with a few clicks. Retailed Size Chart & Guide is your key to reducing returns and boosting conversions. Designed for Shopify merchants, our app empowers you to create tailored size charts with no coding required. Whether you're selling sneakers, apparel, accessories, or bespoke items, our solution simplifies size guidance, ensuring your customers find their perfect fit. Reduce sizing confusion and enhance shopping experience — all with a few clicks. more Data stored in your shop: Using metaobjects and metafields as dynamic sources Drag & drop customization: Easily adjust your size charts without coding. Full theme editor compatibility: Seamlessly edit within Shopify's theme editor. Rich content support: Incorporate tables, images, videos, and tabs. Size chart | Size converter | Size guide | Size | Help size | Size tab | Sizer
Product quiz builder for global brands. Turn shoppers into sales with product recommendation quizzes Build high-converting product recommendation quizzes - no coding needed. RevenueHunt helps you guide shoppers to their best matching product, collect actionable data, and drive measurable results across your store and marketing channels. Create a product quiz with our AI-powered builder, gain customer insights, sync with your mailing list or CRM to create high-ROI marketing campaigns. Easily migrate from TypeForm, Octane AI, JotForm, Quizify, Quiz Kit, Jebbit, OutGrow, Quizell, or Lantern. Build high-converting product recommendation quizzes - no coding needed. RevenueHunt helps you guide shoppers to their best matching product, collect actionable data, and drive measurable results across your store and marketing channels. Create a product quiz with our AI-powered builder, gain customer insights, sync with your mailing list or CRM to create high-ROI marketing campaigns. Easily migrate from TypeForm, Octane AI, JotForm, Quizify, Quiz Kit, Jebbit, OutGrow, Quizell, or Lantern. more Boost sales - Guide customers to the right product with a quiz that converts. Collect actionable data - Segment and tag your shoppers based on quiz responses. Send captured leads to your mailing list or CRM to run personalized campaigns. Match your brand – Customize images, fonts, layout, and CSS to fit your style. Global Markets - Supports multi-store, multi-currency, multi-language workflows.
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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.