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

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Allows the visitor to easily scroll back to top of the page AD Scroll To Top allows the visitor to easily scroll back to the top of the page, with fully customizable options and images. #Visualize your button design What you see is what you get by using a button designer, you can change the button position, size, style, transparency to fit your website. Meanwhile, you can preview your "button design" to see the real effect. AD Scroll To Top allows the visitor to easily scroll back to the top of the page, with fully customizable options and images. #Visualize your button design What you see is what you get by using a button designer, you can change the button position, size, style, transparency to fit your website. Meanwhile, you can preview your "button design" to see the real effect. more Easy to setup and no coding skill required for show button. Your customer will stay in your store longer if they know your store is flexible Speed is our top priority, everything is minified and subsetted.

4.7(Reviews)

Turn collection pages into infinite scroll and add a customizable scroll to top button in 1 click. Scrolly adds seamless infinite scroll to your collection pages, automatically loading more products as customers browse. Replace pagination with endless scrolling or a load more button, enhance the shopping experience and boost your sales & conversions. Scrolly includes a customizable floating back to top button with a custom SVG icon and multiple icon presets. You can adjust color, hover color, shape, size, position, padding and animation. Works on mobile, supports all themes, no code required. Scrolly adds seamless infinite scroll to your collection pages, automatically loading more products as customers browse. Replace pagination with endless scrolling or a load more button, enhance the shopping experience and boost your sales & conversions. Scrolly includes a customizable floating back to top button with a custom SVG icon and multiple icon presets. You can adjust color, hover color, shape, size, position, padding and animation. Works on mobile, supports all themes, no code required. more Make more money with Infinite Scroll & Load More products on collection pages Enhance shopping experience with a customizable floating Scroll to Top button Seamless endless scrolling enhances the shopping experience & product discovery Upload custom SVG icon or use our presets. Adjust color, size, animation & more Mobile responsive, one-click install, supports all themes. No code required

4.9(Reviews)

Calculation based option pricing for customizable products. Advanced product pricing made simple. Perfectly price your customizable and measurement-based products. Specifically designed for sticker, blind, wallpaper, cabinet makers, fabric, counters & parts stores. Use mathematical pricing formulas to calculate option, quantity, weight & discount pricing without limits. Pricing table and vlookups support make complicated pricing easy. Show discounted pricing for options with quantity breaks. Start pricing your products perfectly, get Option Price Calculator. Perfectly price your customizable and measurement-based products. Specifically designed for sticker, blind, wallpaper, cabinet makers, fabric, counters & parts stores. Use mathematical pricing formulas to calculate option, quantity, weight & discount pricing without limits. Pricing table and vlookups support make complicated pricing easy. Show discounted pricing for options with quantity breaks. Start pricing your products perfectly, get Option Price Calculator. more Price custom & measurement-based products more accurately than your competition Use pricing tables and formulas for more dynamic & accurate option pricing. Use product & variant metafields as variables in your calculations and formulas. Unlimited product options: Swatch, Upload, Multi-select, Dropdown, Radio & more. Create rules to show and hide options based on options selected.

4.5(Reviews)

One click installation to add scroll to top button in your store. If you have long pages with a lot of content or products, and your pages are experiencing high bounce rates, this app will make browsing and shopping easier. Creating a happy browsing experience for potential customers is imperative for increasing conversion rates and reducing page bounce rates. with the SealGlobal Scroll to Top app, visitors can instantly get back to the top of the page. If you have long pages with a lot of content or products, and your pages are experiencing high bounce rates, this app will make browsing and shopping easier. Creating a happy browsing experience for potential customers is imperative for increasing conversion rates and reducing page bounce rates. with the SealGlobal Scroll to Top app, visitors can instantly get back to the top of the page. more Easy to setup and universal theme support. Browse long pages easier with flexible scroll to top button. Matches your store style like shape, size, color, button position etc.

4.7(Reviews)

AI-powered search and filters for smarter product discovery that helps turn searches into sales ExpertRec AI Search enhances search and discovery with customizable filters for price, collection, vendor, brand, color, size, tags, and metafields. It supports product variants, collection filters and sorting, and sidebar filters to simplify browsing. The search experience includes instant suggestions, autocomplete, autocorrect, and spell check to provide relevant results quickly. All features are configurable in the ExpertRec control panel. ExpertRec AI Search enhances search and discovery with customizable filters for price, collection, vendor, brand, color, size, tags, and metafields. It supports product variants, collection filters and sorting, and sidebar filters to simplify browsing. The search experience includes instant suggestions, autocomplete, autocorrect, and spell check to provide relevant results quickly. All features are configurable in the ExpertRec control panel. more AI-Powered Search with Voice, Image & ChatGPT Agentic Smart Autocomplete with Typo Correction & Ranking Controls Filter Trees for easy filter reuse across collections and search Advanced Collection & Search Filters with Analytics Fully Customizable Search UI with GA4 Tracking & Variant Support

5.0(Reviews)

Boost your online store sales with our predictive instant search and product filters Help customers discover products in seconds using our smart search app, combined with advanced filters. No coding skills? No problem! Our widgets come with a sleek, easy to customize design. The search plugin works out of the box and is also highly customizable: instant search bar, individual collection filters, product labels, Add to cart, merchandising, variants as separate products, etc. Improve retention and conversions by streamlining product discovery. Enjoy our responsive support team! Help customers discover products in seconds using our smart search app, combined with advanced filters. No coding skills? No problem! Our widgets come with a sleek, easy to customize design. The search plugin works out of the box and is also highly customizable: instant search bar, individual collection filters, product labels, Add to cart, merchandising, variants as separate products, etc. Improve retention and conversions by streamlining product discovery. Enjoy our responsive support team! more Smart & Instant Search Bar shows relevant search results across all store pages Personalized AI search & Voice search for a seamless user experience Unlimited out-of-the-box and custom filters by default ones,tag filters,prefixes Configurable live search results page & product cards’ content Merchandising tools & upsell product recommendations to boost AOV and sales

4.7(Reviews)

Grow Conversions & Order Value with Free Shipping Bars, Countdown Timers & Cross-Sell Pop-Ups Vital on-site marketing tools to drive sales, boost conversions, and increase AOV. Create personalized campaigns with GEO-based Free Shipping Bars, Countdown Timers, Pop-ups, and Multi-Announcement Bars. Collect emails with discounts & Store Credits, engage shoppers with notifications, and enhance UX with a Scroll to Top Button. Lift your order value effortlessly with perfectly timed cross-sell pop-ups that inspire shoppers to add a little more. Powered by analytics. Install now and grow today! Vital on-site marketing tools to drive sales, boost conversions, and increase AOV. Create personalized campaigns with GEO-based Free Shipping Bars, Countdown Timers, Pop-ups, and Multi-Announcement Bars. Collect emails with discounts & Store Credits, engage shoppers with notifications, and enhance UX with a Scroll to Top Button. Lift your order value effortlessly with perfectly timed cross-sell pop-ups that inspire shoppers to add a little more. Powered by analytics. Install now and grow today! more Increase order value by motivating shoppers with well-timed Сross-sell Pop-ups Use the Free Shipping Bar to boost the vital metric – average cart value Add a variety of customized banners to increase conversions and drive sales Collect customer emails with the Email Collection Bar & Discount Pop-ups Gather vital data to make informed decisions to maximize your sales

4.9(Reviews)

Vehicle Year/Make/Model Lookup with Faceted Navigation and Search Engine Friendly URLs A fitment lookup that features everything you need to succeed, managed and supported by experienced automotive parts & accessories entrepreneurs. Our team provides solutions to help your ecommerce business, not just apps. We are down to earth, direct, and serious about helping you focus on growth. The Fitment Lookup enables you to more efficient manage fitment options, and allows customers to easily filter products an validate fitment - improving conversion rate and reducing returns. A fitment lookup that features everything you need to succeed, managed and supported by experienced automotive parts & accessories entrepreneurs. Our team provides solutions to help your ecommerce business, not just apps. We are down to earth, direct, and serious about helping you focus on growth. The Fitment Lookup enables you to more efficient manage fitment options, and allows customers to easily filter products an validate fitment - improving conversion rate and reducing returns. more US Service and Support from Automotive eCommerce Veterans Dynamic, Category-Specific Qualifiers - Don't Prompt for What Doesn't Matter! Saved Vehicle Search, My Garage & Product Page Fitment Validator Search Engine Friendly URLs for Dynamic Vehicle & Facet Pages Guided Install Requires SearchAuto Support, Not Plug-n-Play, Contact Us for Demo

5.0(Reviews)

Find more, sell more. Intelligent search, smart filters and analytics built for growing stores SearchGro replaces Shopify's default search with one built for real customer behaviour like typos, partial words, voice input and more. Build filters using tags, variants, metafields and custom attributes on search results and collection pages. Analytics show what customers search, what returns zero results, and where they drop off so you can act on it. Theme-ready with customisation available. Supports Shopify Markets, multi-currency and localisation. White-glove setup available. SearchGro replaces Shopify's default search with one built for real customer behaviour like typos, partial words, voice input and more. Build filters using tags, variants, metafields and custom attributes on search results and collection pages. Analytics show what customers search, what returns zero results, and where they drop off so you can act on it. Theme-ready with customisation available. Supports Shopify Markets, multi-currency and localisation. White-glove setup available. more Typo-tolerant, voice-enabled search with instant results, ranking & autocomplete Filters on search & collection page via tags, price, variants, metafields & more Multi-currency & multi-language search via Shopify Markets, with localisation Search across products, collections, blogs & pages from a single search widget White-glove setup, theme-wise configurations, synonyms, auto rules & custom CSS

4.1(Reviews)

Plant the Seed for Smarter Sales with AI Powered Product Recommendations The First Collaborative Filtering + LLM Recommendation Engine on Shopify Turn your store into a smart selling machine. Seedid.ai combines AI-powered recommendations with real-time shopping behavior to help you cross-sell and upsell like a pro — automatically. No setup headaches. No sales guesswork. Just intelligent, automated revenue growth rooted in data. The First Collaborative Filtering + LLM Recommendation Engine on Shopify Turn your store into a smart selling machine. Seedid.ai combines AI-powered recommendations with real-time shopping behavior to help you cross-sell and upsell like a pro — automatically. No setup headaches. No sales guesswork. Just intelligent, automated revenue growth rooted in data. more Grow Sales Automatically : AI upsells across PDP, cart, and checkout. Smarter AI Recommendation : Powered by LLMs + collaborative filtering. Built for Shopify Growth : Works with any theme, sharpens as you scale. 24/7 Human Support : Questions? We’re always here to help Free White Glove Setup: We’ll install and style it for you—no cost.

5.0(Reviews)

Drive more revenue with cross-sells, upsells, product add-on & cart recommendations for your store. Looking to maximize revenue? With SellUp, you can create precision based cross-sells, upsells, product accessories, shop the look & add-ons for your store. From the product page through to the cart & thank you page, you can offer the best upsell & product add-on flow throughout the customer journey. SellUp will match your stores design so upsells look seamless. Incentivize customers with powerful call-to-actions & leverage AI to turn single product orders into multi-product orders increasing AOV Looking to maximize revenue? With SellUp, you can create precision based cross-sells, upsells, product accessories, shop the look & add-ons for your store. From the product page through to the cart & thank you page, you can offer the best upsell & product add-on flow throughout the customer journey. SellUp will match your stores design so upsells look seamless. Incentivize customers with powerful call-to-actions & leverage AI to turn single product orders into multi-product orders increasing AOV more Create best in class upsells and add-ons to increase revenue across your store Offer add ons and cart upsells throughout the customer journey Create One Check AI Upsells in 60 seconds. Sell more with SellUp Create a frequently bought together section & shop the look upsells Track the performance of your addon offers using the analytics suite

4.4(Reviews)

The solution to increase sales in many ways - Running multi flexible discount promotions 1) Increase conversion rate: Display offers to attract customers: BOGO, Buy X get Y, free gift, free ship, Mix & Match, any 3 for $99, flash sales, fixed price, gift card... 2) Boost average order value: Suggest customers to buy more: bundle with quantity box & various offers, build your own bundle, upsell, variant level offer, spend $X get Y motivator/progress bar, quantity breaks, AI or manual recommendation sections... 3) Improve retention rate: Member tiers, custom pricing, loyalty program 1) Increase conversion rate: Display offers to attract customers: BOGO, Buy X get Y, free gift, free ship, Mix & Match, any 3 for $99, flash sales, fixed price, gift card... 2) Boost average order value: Suggest customers to buy more: bundle with quantity box & various offers, build your own bundle, upsell, variant level offer, spend $X get Y motivator/progress bar, quantity breaks, AI or manual recommendation sections... 3) Improve retention rate: Member tiers, custom pricing, loyalty program more Sale widget, quantity discount table, product labels, cart widget, post-sale box Up-sell popup, manual/AI recommendation sections, bundles, top bar, quick-shop Gamified motivator: motivate customers to reach cart goal or quantity goal Countdown, schedule, customer eligibility, country filter, statistics, loyalty.. Customization: translations, colors, locations, style, features, integrations...

4.7(Reviews)

Create impactful announcement bars for your site. Enhance visitor engagement with ease. Sense Announcement Bar revolutionizes site interaction by enabling the creation of customizable and dynamic announcement bars. Easily manage multiple bars from a single dashboard and utilize extensive targeting options to reach diverse audience segments effectively. Enhance engagement with visually appealing, timely messages tailored to specific visitor behaviors. Sense Announcement Bar revolutionizes site interaction by enabling the creation of customizable and dynamic announcement bars. Easily manage multiple bars from a single dashboard and utilize extensive targeting options to reach diverse audience segments effectively. Enhance engagement with visually appealing, timely messages tailored to specific visitor behaviors. more Customize with colors, gradients, patterns, or templates for a unique style. Target by device, UTM, cart value, URL, customer, product, collection, and more. Add multiple text blocks with animated transitions for dynamic messaging. Additional bars feature like countdown, button, and scheduled display times. Schedule your Announcement Bar for specific dates and times to reach visitors.

5.0(Reviews)

Making ecommerce search personal Sensefuel assists your customers with AI hyper-personalized answers and engaging shopping experiences that promote sales. The platform enables personally relevant and engaging shopper experiences that transform on-site searches into sales. Intuitive and with a user-friendly interface, ecommerce teams can easily control and optimize the implementation of their e-merchandising strategies. The platform seamlessly complements Shopify thanks to this dedicated app. Sensefuel assists your customers with AI hyper-personalized answers and engaging shopping experiences that promote sales. The platform enables personally relevant and engaging shopper experiences that transform on-site searches into sales. Intuitive and with a user-friendly interface, ecommerce teams can easily control and optimize the implementation of their e-merchandising strategies. The platform seamlessly complements Shopify thanks to this dedicated app. more Hyper-personalized search results, in real time, for each visitors Relevance with 0 minutes of settings, thanks to AI self-learning AI Powered product recommendations throughout the entire shopping experience Pin & merchandise product ranking on your category pages Customizable search UX, included enriched filters & conversational experiences

0.0(Reviews)

Optimize your product variant SEO with our combined listings app and improve your traffic. Just like Shopify Combined Listings but available to all Shopify plans - Link native Shopify products together as variants. Bypass the 100 variant limit. Each variant is a product so you can improve Search Engine Optimization (SEO) on a per product basis with unique URLs, tags, descriptions, and images per variant. Automatically convert from Shopify Variants to SEO Variants. Just like Shopify Combined Listings but available to all Shopify plans - Link native Shopify products together as variants. Bypass the 100 variant limit. Each variant is a product so you can improve Search Engine Optimization (SEO) on a per product basis with unique URLs, tags, descriptions, and images per variant. Automatically convert from Shopify Variants to SEO Variants. more Extensive Picker: Buttons, Dropdown, Color Swatches, and Image Swatches. 1-click Convert from Shopify Variants to SEO Variants and save hours. Support for multi-level variants like combining color and size. Add your swatches to your collection page and allow users to quickly get to it. Optimize SEO for product pages acting as variants and drive traffic.

5.0(Reviews)

Increase conversion rate and checkout faster with Sticky Add to Cart. With SEOWILL (formerly SEOAnt)-Sticky Cart, you can easily choose a mini shopping cart or a floating sticky shopping cart according to your needs, reducing the user selection process and increasing the probability of product checkout. Alternatively display sticky add to cart banner on your homepage, and you can select the real-time urgency countdown timer to increase urgency and increase conversions. Powered by CWILL. With SEOWILL (formerly SEOAnt)-Sticky Cart, you can easily choose a mini shopping cart or a floating sticky shopping cart according to your needs, reducing the user selection process and increasing the probability of product checkout. Alternatively display sticky add to cart banner on your homepage, and you can select the real-time urgency countdown timer to increase urgency and increase conversions. Powered by CWILL. more One click to add sticky carts and mini carts to reduce abandoned carts Add a Quick Buy Button for better user experience Use a countdown timer to increase urgency and increase conversions Put the Add to Cart Button on the page and entice users to click on it Fully customize Sticky Cart to match your store

4.9(Reviews)

Booking app for scheduling services, experiences and events, online and on POS. Go live in minutes. Turn your Shopify store into a booking engine. Sesami lets you sell services, experiences, events, and classes—online or in-store. Built for beauty, wellness, fitness, and retail, it powers everything from spa treatments to styling sessions. With tools like Sesami Flows and our SDK, you can customize every step of the booking journey and scale with confidence. Perfect for retail, hair salons, spas, fitness, jewelry, tattoo and piercing studios, travel and tour services, and more. Turn your Shopify store into a booking engine. Sesami lets you sell services, experiences, events, and classes—online or in-store. Built for beauty, wellness, fitness, and retail, it powers everything from spa treatments to styling sessions. With tools like Sesami Flows and our SDK, you can customize every step of the booking journey and scale with confidence. Perfect for retail, hair salons, spas, fitness, jewelry, tattoo and piercing studios, travel and tour services, and more. more Use our unique booking experiences, or our SDK. Not a copy of Calendly! Send reminders or thank-you emails using Sesami Flows or Klaviyo integration. Scale and go global! Sesami supports multiple languages and worldwide time-zone. Partner-friendly app with agency partners and integrations like Hydrogen. Install now. Setup takes minutes; claim your onboarding call.

4.6(Reviews)

Boost sales by turning product personalization into revenue with our fast product design studio Custom product designer tool simplifies product personalization and improves product customization experience that boost conversions on your store. Product customizer tool enhances your web to print store’s experience. Shoppers add images, text, colors, patterns, shapes & cliparts using safe-area indicators and print templates. Create personalized products like t-shirts, mugs, phone cases, and more. Generate print-ready files for POD integration with Printful, Printify and Gelato(Coming Soon). Custom product designer tool simplifies product personalization and improves product customization experience that boost conversions on your store. Product customizer tool enhances your web to print store’s experience. Shoppers add images, text, colors, patterns, shapes & cliparts using safe-area indicators and print templates. Create personalized products like t-shirts, mugs, phone cases, and more. Generate print-ready files for POD integration with Printful, Printify and Gelato(Coming Soon). more Ready to use text, images, cliparts, patterns & product colors & add your own Set custom DPI and get print ready file in PNG, JPG, SVG, AI, PDF, EPS, DXF format Create custom pricing for text, images, clip-arts and patterns, along with tier pricing rules Bulk Ordering with Size & Color Variants, Layout Personalization, Remove Image Background Design engraving products in any device with multiple product sides design area

4.7(Reviews)

Create engaging shoppable lookbook galleries by tagging products on images. Lookbooks are an important marketing tool for online stores as they allow businesses to showcase their products in a visually compelling manner. Create beautiful shoppable lookbook galleries by tagging products on images. Help your customers visualize how products look in real life thus encouraging customers to buy products. Lookbook galleries contain different hotspots which link to products and allow purchase. You can customize the design to suit your store’s branding and colors. Lookbooks are an important marketing tool for online stores as they allow businesses to showcase their products in a visually compelling manner. Create beautiful shoppable lookbook galleries by tagging products on images. Help your customers visualize how products look in real life thus encouraging customers to buy products. Lookbook galleries contain different hotspots which link to products and allow purchase. You can customize the design to suit your store’s branding and colors. more Shoppable Lookbook Gallery images hotspots or tags on the images. Create any number of galleries with unlimited photos. Customize lookbook gallery design to match your store’s branding and colors. Shoppers can purchase products from your Lookbooks. Images reach people on an emotional level and create strong connections.

2.1(Reviews)

Boost sales and AOV by adding a high-conversion shake animation to your 'Add to Cart' button Shake Add to Cart Button enhances Shopify stores by adding a customizable shake animation to the "Add to Cart" button. Seamlessly integrates with Shopify 2.0 themes, it offers settings for animation time and delay. The app does not collect or store customer data, focusing solely on improving user engagement and interaction. Enjoy a reliable and secure solution for elevating your store’s user experience Shake Add to Cart Button enhances Shopify stores by adding a customizable shake animation to the "Add to Cart" button. Seamlessly integrates with Shopify 2.0 themes, it offers settings for animation time and delay. The app does not collect or store customer data, focusing solely on improving user engagement and interaction. Enjoy a reliable and secure solution for elevating your store’s user experience more Customizable Shake Animation: Adjust time and delay. Seamless Integration: Works with Shopify 2.0 themes effortlessly. No Customer Data Storage or Database Needed

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.