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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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We've analyzed thousands of custom css apps to identify the top performers based on ratings and install counts.

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Progress bar for cart upsell, cross sell and Gift. Improve AOV with cart value goals. Auto add Gift. New way to improve your AOV with different value goals progress bar! When customers see "You're only $20 away from 10% discount!", they actually spend these extra $20 (or even more) to get further Gift or Discounts. To push the order total, just give them a cart goal value (e.g., $100) and award them (free shipping, discount or free gift) when they reach this amount. Multiple attractive progress bar designs. Fixed announcement message on Header/Footer in all store pages to track goal for reward. New way to improve your AOV with different value goals progress bar! When customers see "You're only $20 away from 10% discount!", they actually spend these extra $20 (or even more) to get further Gift or Discounts. To push the order total, just give them a cart goal value (e.g., $100) and award them (free shipping, discount or free gift) when they reach this amount. Multiple attractive progress bar designs. Fixed announcement message on Header/Footer in all store pages to track goal for reward. more Multi-tier Progress Bar: Free Gifts & shipping based on cart total or item count Placed Anywhere: product page, cart page, cart drawer, or as an announcement bar Highly Customisable: customise progress bar with colour or use pre-made styles. Smart In Cart Upsells: Upsell frequently bought together items in your cart In progress + successful message when goal is met. Changes when cart is updated.

4.9(Reviews)

Unlock more sales using a free shipping progress bar, gift with purchase (GWP) & upsell cart widget. Make 2025 count with Progressify free shipping progress bar, cart upsell and free gift with purchase (GWP). This is a simple and effective progress bar upsell app that produces results immediately. Display dynamic progress bars to visualize custom offers such as free shipping, free gift etc. and encouraging customers to add more items to their cart. Localize offers per market, display up to three stacked bars and use product upsell and cross sell to reach each offer with ease. Make 2025 count with Progressify free shipping progress bar, cart upsell and free gift with purchase (GWP). This is a simple and effective progress bar upsell app that produces results immediately. Display dynamic progress bars to visualize custom offers such as free shipping, free gift etc. and encouraging customers to add more items to their cart. Localize offers per market, display up to three stacked bars and use product upsell and cross sell to reach each offer with ease. more Show up to three stacked progress bar offer goals Markets integration – Show different offer thresholds per market Add upsell cart widget to stimulate purchase efficiency Offer free gift with purchase as a value add Place the upsell app anywhere, product page, collections, cart drawer etc

4.5(Reviews)

Experience the convenience of using our customizable & user-friendly store and dealer locator. Our store locator solution makes it easy for customers to find your physical locations. With its user-friendly design and search functionality, our tool can help increase in-store sales and reduce customer support inquiries. It's a great way to showcase your stores, retailers, and dealers to the world. Additionally, our advanced analytics provide valuable insights into where customers are looking for your products, allowing you to better understand their needs and preferences. Try it today. Our store locator solution makes it easy for customers to find your physical locations. With its user-friendly design and search functionality, our tool can help increase in-store sales and reduce customer support inquiries. It's a great way to showcase your stores, retailers, and dealers to the world. Additionally, our advanced analytics provide valuable insights into where customers are looking for your products, allowing you to better understand their needs and preferences. Try it today. more No API KEY required - quick installation without any external services and costs 23k+ map styles plus custom markers, colors and fonts Intelligent bulk import system with Google Sheet & Shopify Locations sync Advanced analytics and customizable dealer registration form Multilingual support – translate map and location data into any language

4.8(Reviews)

Increase AOV with Product Bundles, Volume Discounts, Gifts, Limited-time Offers & Quantity Breaks. Promofy helps you sell more with Product Bundles, Volume Discounts, Gifts, Limited-time Offers, and Quantity Breaks. It makes upselling effortless and improves average order value. Run Countdown bars and Buy X Get Y campaigns to engage shoppers. Track real-time results and optimize your store with simple, effective promotions. Promofy helps you sell more with Product Bundles, Volume Discounts, Gifts, Limited-time Offers, and Quantity Breaks. It makes upselling effortless and improves average order value. Run Countdown bars and Buy X Get Y campaigns to engage shoppers. Track real-time results and optimize your store with simple, effective promotions. more Ignite excitement with time-limited deals that drive immediate purchases. Add thrilling urgency to your store with eye-catching with Countdowns Timer Bar Boost sales by enticing customers with tempting bulk-buy discounts. Delight shoppers with irresistible promotions that encourage extra purchases. Gain powerful insights with real-time data to optimize your store's performance.

5.0(Reviews)

EU Hosted. Popups to capture email and upsell. Highly customizable! Why choose OnVoard Prompt? With Prompt, we are pushing the limits of what you can accomplish with popups by going beyond email capture and helping you to increase store revenue with cart upsell. 1) Email Popup: Welcome new users with discount code for first purchase. 2) Cart upsell: Recommend products when user add cart item. 3) Cross sell products when user initiate checkout. 4) Abandonment Protector: Use exit popup when a user with cart items tries to exit. For GDPR, data are hosted in EU. Why choose OnVoard Prompt? With Prompt, we are pushing the limits of what you can accomplish with popups by going beyond email capture and helping you to increase store revenue with cart upsell. 1) Email Popup: Welcome new users with discount code for first purchase. 2) Cart upsell: Recommend products when user add cart item. 3) Cross sell products when user initiate checkout. 4) Abandonment Protector: Use exit popup when a user with cart items tries to exit. For GDPR, data are hosted in EU. more Powerful editor to fully customize pop-ups. Add Cart Trigger - Trigger popup when user adds an item to the cart. Initiate Checkout Trigger - Trigger popup when user clicks checkout. Filter by contact properties. For example, display discount codes for VIPs. Filter by Shopify store properties. For example, prompt if cart amount < $100.

5.0(Reviews)

Upsell, cross-sell and bundle on add-to-cart and checkout. Increase your order values with upsells. Boost your store's average order value by offering targeted upsell and cross-sell opportunities with Propel Upsell & Cross-sell. Showcase relevant add-ons and discounts to shoppers during the add-to-cart and checkout process, boosting both customer satisfaction and your revenue! Propel Upsell & Cross-sell is designed to help merchants effortlessly grow their sales. Built by Shopify experts, this app comes with outstanding support and a proven track record of boosting sales. Boost your store's average order value by offering targeted upsell and cross-sell opportunities with Propel Upsell & Cross-sell. Showcase relevant add-ons and discounts to shoppers during the add-to-cart and checkout process, boosting both customer satisfaction and your revenue! Propel Upsell & Cross-sell is designed to help merchants effortlessly grow their sales. Built by Shopify experts, this app comes with outstanding support and a proven track record of boosting sales. more Offer a variety of upsells including BOGO, buy one get 50% off and more! Works out-of-the-box with most themes - no installation or coding required Target your offers by product page, cart value, items in cart and more Extensive customization options let you match your offer's design to your theme Auto-removes discounted upsells when trigger products are removed

4.7(Reviews)

Improve customer trust and stay legally compliant with a customizable terms and conditions checkbox. Add a checkbox that allows you to require a refund policy, shipping policy, and consent for the general conditions of sale. Add checkbox with one click. The checkbox can be used for checkout rules, terms of use, shipping policy, I agree terms (agree box), RGPD/GDPR cookies, cart checkbox consent terms, payment terms, I agree to policies, refund policy, terms of service, special Valentine's Day/St. Patrick's Day/Easter sale terms and more. Add a checkbox that allows you to require a refund policy, shipping policy, and consent for the general conditions of sale. Add checkbox with one click. The checkbox can be used for checkout rules, terms of use, shipping policy, I agree terms (agree box), RGPD/GDPR cookies, cart checkbox consent terms, payment terms, I agree to policies, refund policy, terms of service, special Valentine's Day/St. Patrick's Day/Easter sale terms and more. more Add a required checkbox with single click I agree to terms check box & require AGB, GDPR, EULA, RGPD & LGPD consent Agree terms checkbox, cart checkbox, cart page consent checkbox, GDPR, RGPD Return policy checkbox, AGB, EULA customer privacy text box, textbox +18+

0.0(Reviews)

Show personalized product recommenders for increased sales. Plus popups, chat bots, email and more Sell more with our product recommenders. Our AI engine shows personalized recommendations on your store in real time, increasing average order value, conversion rates and cart value. Our recommenders range from frequently bought to user behaviour based recommendations, and everything in between. Convert more by giving every customer a personalised experience with our full suite. Target customer segments to control popups, content and chat bots. Expert customer support via in-app chat and email. Sell more with our product recommenders. Our AI engine shows personalized recommendations on your store in real time, increasing average order value, conversion rates and cart value. Our recommenders range from frequently bought to user behaviour based recommendations, and everything in between. Convert more by giving every customer a personalised experience with our full suite. Target customer segments to control popups, content and chat bots. Expert customer support via in-app chat and email. more Real-time personalised product recommendations at every touchpoint. Display banners, images & other content to your different customer segments. Email capture and promo pop-ups. Control the conditions of when they're shown. Create chat bots that answer questions. Use results to create customer segments. Use email upsells to entice customers back based on their store activity.

5.0(Reviews)

Announcement bar with countdown timer fully customizable # Announcing Promotions & Boost Sales Promotions, and special offers are key element of managing customer relationships. Informing them with a display banner on your website is a simple and effective way to achieve this. Smart Bar makes that even easier and quicker. # Schedule announcement Bar / Promo Bar * Add Start and End Time Option. * Schedule Timer from a specific start date to the complete time. * Easy Installation and No Custom Coding Required. # Easy to Setup: * Background Images, # Announcing Promotions & Boost Sales Promotions, and special offers are key element of managing customer relationships. Informing them with a display banner on your website is a simple and effective way to achieve this. Smart Bar makes that even easier and quicker. # Schedule announcement Bar / Promo Bar * Add Start and End Time Option. * Schedule Timer from a specific start date to the complete time. * Easy Installation and No Custom Coding Required. # Easy to Setup: * Background Images, more Boost Sales by offering Promotional offers and with this Catchy Announcement Bar Fully responsive across desktops, phones and tablets. Catchy Offers in addition to this Catchy announcement bar offers special adv

4.1(Reviews)

Convert your responsive store to an installable mobile app for users to have it on their home screen PWA - Progressive Web App helps store visitors to add your web store on their mobile's home screen. So your store will be easily accessible by customer which will increase the engagement ratio and overall increase the store revenue. The same website with PWA can be converted to android mobile app as well. Which can be listed on Google play store. By this way increase discoverability of store and organic traffic reduces your ads cost. PWA - Progressive Web App helps store visitors to add your web store on their mobile's home screen. So your store will be easily accessible by customer which will increase the engagement ratio and overall increase the store revenue. The same website with PWA can be converted to android mobile app as well. Which can be listed on Google play store. By this way increase discoverability of store and organic traffic reduces your ads cost. more Fast, Integrated & Reliable Improved Performance Store becomes Installable Customise app with your own Splash screen & logo Preview to device home screen and splash screen

4.4(Reviews)

Make your add to cart button dance is one of the simplest thing you can do to increase conversion Animate Add To Cart Buttons- Bring your Add To Cart buttons to your customer’s attention using advanced beautiful animations. Your customers will love it and click more on Add To Cart. Choose from a large collection of animation styles. Build Beautiful Add To Cart Buttons - With Cart Animator & Styler, you can easily re-style your Add To Cart buttons to look exactly like you want, without modifying any thing with your theme. Animate Add To Cart Buttons- Bring your Add To Cart buttons to your customer’s attention using advanced beautiful animations. Your customers will love it and click more on Add To Cart. Choose from a large collection of animation styles. Build Beautiful Add To Cart Buttons - With Cart Animator & Styler, you can easily re-style your Add To Cart buttons to look exactly like you want, without modifying any thing with your theme. more Easily rebuild your Add To Cart buttons to look the way you like. No Coding Skills, easy to install, just one click Get more visitors to click on button using beautiful animations.

4.0(Reviews)

PX Product Options is the options customization tool that allows you to add unlimited options Product Options & Variants Options is the options customization tool that allows you to add unlimited options to your products with many of different product option types. This app offers almost any custom field type you can think of: Dropdown, Text Field, Image Upload , Number Field, Date Field, Color Swatch, Image Swatch, Text Swatch, Dropdown with Image & Color, Checkbox Product Options & Variants Options is the options customization tool that allows you to add unlimited options to your products with many of different product option types. This app offers almost any custom field type you can think of: Dropdown, Text Field, Image Upload , Number Field, Date Field, Color Swatch, Image Swatch, Text Swatch, Dropdown with Image & Color, Checkbox more Let shoppers personalize your products for engraving, custom printing Easy to use drag and drop form builder. Quickly scale your products forms! Increase your store's average order size by using our product form builder

4.0(Reviews)

Easily create forms to collect leads, improve customer service & boost sales without coding Explore the ease of form creation with qikify Contact Form Builder, your no-code form builder solution. Craft custom forms for diverse needs like contact, wholesale, and surveys. Seamlessly convert new leads, expand contact lists, and elevate customer service. Enjoy efficient in-app submission management, and sync with mail apps for smooth communications. Update your contact us form with qikify, and transform interactions into opportunities. Explore the ease of form creation with qikify Contact Form Builder, your no-code form builder solution. Craft custom forms for diverse needs like contact, wholesale, and surveys. Seamlessly convert new leads, expand contact lists, and elevate customer service. Enjoy efficient in-app submission management, and sync with mail apps for smooth communications. Update your contact us form with qikify, and transform interactions into opportunities. more Tailored form creation: Contact, Wholesale, Registration, and more Supports File Upload, Image Choice, and other essential form elements Display forms with ease as a Popup, Bubble, or Embedded form Advanced features: reCaptcha, Conditional logic, Form schedule & more Track form submissions in-app or via email effortlessly

4.9(Reviews)

Boost conversion and AOV with Slide Cart Drawer, Free Shipping, Cart Upsell and Sticky Add to Cart. Increase your AOV and boost conversion rate by showing Sticky Add to Cart bar and Slider Cart Drawer. Improve customers' experience by allow them to add Note, apply Discount Code, estimate Shipping Rate right on cart. Or motivate customers to buy more and reduce abandoned cart with Cart Upsell, Free Shipping bar, and offer Add-ons for Shipping Protection or Gift-wrapping. Sticky Add to Cart button keep smooth navigation and better conversion rate. Fully matching with your brand' look & feel! Increase your AOV and boost conversion rate by showing Sticky Add to Cart bar and Slider Cart Drawer. Improve customers' experience by allow them to add Note, apply Discount Code, estimate Shipping Rate right on cart. Or motivate customers to buy more and reduce abandoned cart with Cart Upsell, Free Shipping bar, and offer Add-ons for Shipping Protection or Gift-wrapping. Sticky Add to Cart button keep smooth navigation and better conversion rate. Fully matching with your brand' look & feel! more Sticky add to cart: Always visible add to cart button when scroll/swipe down Cart upsell: Recommend freequently bought together items in your cart Sticky cart drawer: Allows shoppers to view cart without leaving current page Free shipping progress bar, note box, estimate delivery fee Term & conditional box, trust badge to build trust

4.9(Reviews)

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.

5.0(Reviews)

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

0.0(Reviews)

Create product quizzes and offer discounts based on answers to boost sales and engagement. Quiz Buddy is an easy to use app that allows you to create personalized product quizzes to engage customers. Let customers solve quizzes and get personalized discounts. Our app helps your store to increase engagement with custom quizzes designed for tailored product suggestions. It also helps in SEO too. Organize quizzes for better customer interaction and increase sales with discounts on product recommendations. Add quizzes to increase sales and make the process more interactive Quiz Buddy is an easy to use app that allows you to create personalized product quizzes to engage customers. Let customers solve quizzes and get personalized discounts. Our app helps your store to increase engagement with custom quizzes designed for tailored product suggestions. It also helps in SEO too. Organize quizzes for better customer interaction and increase sales with discounts on product recommendations. Add quizzes to increase sales and make the process more interactive more Create product quizzes with customizable questions for engaging interactions. Offer personalized discounts based on quiz answers to boost conversions. Design custom quizzes for tailored offers and unique customer experiences. Track quiz results with detailed analytics to improve customer engagement. Fully customizable, mobile-friendly, and integrates with all Shopify themes.

0.0(Reviews)

Personalize every shopping experience with a product quiz and AI Sales Assistant — no code needed. Launch a high-converting product quiz or AI sales agent in minutes — no code required. Boost AOV, capture emails, and personalize every shopping session using built-in AI to generate questions, outcomes, and logic. Add the optional AI Shopping Assistant for guided selling that recommends products and helps answer common questions using your product catalog and site content. Track performance, run A/B tests, and sync with Klaviyo, Omnisend, Attentive, and more. Launch a high-converting product quiz or AI sales agent in minutes — no code required. Boost AOV, capture emails, and personalize every shopping session using built-in AI to generate questions, outcomes, and logic. Add the optional AI Shopping Assistant for guided selling that recommends products and helps answer common questions using your product catalog and site content. Track performance, run A/B tests, and sync with Klaviyo, Omnisend, Attentive, and more. more Effortless quiz creation—AI builds questions and logic for you to get started Enable an AI Shopping Assistant for chat-style guided selling and upsells Advanced logic modes plus optional AI matching for precise recommendations Detailed conversion analytics & A/B testing to optimize conversion and AOV Seamless integrations with Klaviyo, Omnisend, Attentive, Google Tag Manager

4.9(Reviews)

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

4.7(Reviews)

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

0.0(Reviews)

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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.