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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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Leverage cart upsell offers to encourage customers to buy more: discount products, BOGO & free gift. Create cart upsell offers like Buy One Get One, free gifts, and custom discounts! Show customers an upsell popup after they click "Add to Cart," encouraging quicker purchases. Use Shopify AI for automatic upsell recommendations or set them up manually. Easily choose products for upsells and set conditions for applying offers. Boost sales with targeted, attention-grabbing upsell offers! Create cart upsell offers like Buy One Get One, free gifts, and custom discounts! Show customers an upsell popup after they click "Add to Cart," encouraging quicker purchases. Use Shopify AI for automatic upsell recommendations or set them up manually. Easily choose products for upsells and set conditions for applying offers. Boost sales with targeted, attention-grabbing upsell offers! more All kinds of upsell ideas to implement, from BOGO to free gifts. Advanced real-time analytics. Track your upsell campaigns to optimize offers. Fully customizable design. Adjust the popup to match your store theme. Smart upsell suggestions based on Shopify AI algorithms. Easy to set up. Create offers in minutes and start selling more right away.

4.5(Reviews)

Boost AOV by keeping your Add to Cart button visible. Stop losing shoppers mid-scroll. Keep your “Add to Cart” button always visible on product pages, home, or collections so customers never miss add to cart button. Easy to customise, fully responsive, and proven to increase conversions and average order value (AOV). Stop losing shoppers mid-scroll. Keep your “Add to Cart” button always visible on product pages, home, or collections so customers never miss add to cart button. Easy to customise, fully responsive, and proven to increase conversions and average order value (AOV). more Sticky Add to Cart — Visible on scroll to boost conversions! Seamless Customisation — Branding, Display, Texts, Features. Homepage Display — Turn homepage traffic into sales. Optimised UX — A seamless cart experience across all devices. Smart Add-ons: Variants, quantities, translations, scroll triggers, and more.

5.0(Reviews)

Sticky Add to Cart, Cart Drawer, Buy Now Button & Instant Checkout Increase conversions with a Sticky Add to Cart button, Cart Drawer, Buy Now button, and Instant Checkout. Let shoppers add products without page reloads, open a beautiful slide cart, or skip directly to checkout with one click. Increase conversions with a Sticky Add to Cart button, Cart Drawer, Buy Now button, and Instant Checkout. Let shoppers add products without page reloads, open a beautiful slide cart, or skip directly to checkout with one click. more Sticky Add to Cart button on every product page Add to Cart from Collection pages without page navigating Buy Now button with instant checkout Slide Cart / Cart Drawer for faster shopping Floating Sticky Cart on desktop & mobile

3.8(Reviews)

When the customer scrolls the page, Sticky ATC makes potential users pay attention to your products. Increase your revenue by having a smart sticky product bar, which will make potential customers pay attention to your products. Our Sticky Add To Cart app will know when the customer tends to scroll up & is looking to add product to the cart. It appears at just the right time, in the right place. This is for the ultimate convenience while still keeping customers focused on the main contents, like description, features…etc. you can modify everything you want to match your online store perfects. Increase your revenue by having a smart sticky product bar, which will make potential customers pay attention to your products. Our Sticky Add To Cart app will know when the customer tends to scroll up & is looking to add product to the cart. It appears at just the right time, in the right place. This is for the ultimate convenience while still keeping customers focused on the main contents, like description, features…etc. you can modify everything you want to match your online store perfects. more Modify everything you want to match your online store perfectly. Auto encloses to any themes, including the most popular themes on the market. Sticky Add to Cart button behavior can same as the default product add to cart Homepage and Support multi stores, currencies, and languages (Automatically) Fast CDN based performance + Integrate with google analytics

4.9(Reviews)

Add a sliding cart drawer and motivate your customers to unlock different types of rewards. With the shopping cart app, you can level up cart to a sticky cart drawer instead of the default store cart. The slider cart offer helps you to create exciting deals. Cart x has a consistent cart, better cart & mini cart, offering more than Shopify cart drawer. Experience fast cart popup with stickey cart and manage orders with Bulk Cart. Simplify Sticky Add to Cart slider with a suite of Cart Apps. Alternative to: Uplinky Sticky Cart, UpCart Cart Drawer, Upcart Drawer, Monster Cart. With the shopping cart app, you can level up cart to a sticky cart drawer instead of the default store cart. The slider cart offer helps you to create exciting deals. Cart x has a consistent cart, better cart & mini cart, offering more than Shopify cart drawer. Experience fast cart popup with stickey cart and manage orders with Bulk Cart. Simplify Sticky Add to Cart slider with a suite of Cart Apps. Alternative to: Uplinky Sticky Cart, UpCart Cart Drawer, Upcart Drawer, Monster Cart. more Set personalized Cart Messages, dynamic Cart Goals & Cart Rules to boost sales. X cart stick with progress bar, cart upsell & Shopify cart abandonment. Discount cart, In Cart Upsell, Drawer Cart Notes, Slide Cart Sticky Cart Drawer Create a sense of urgency with Scarcity Timer Cart in carrello. Create seamless shopping for your customers with Slide a Cart & Cross Cart.

4.6(Reviews)

Customisable, SEO-Friendly & Multilingual. A Store Locator that looks like it was built just for you Use one interface to manage store details and trading hours across all stockinstore solutions. Perfect for retailers, franchises and wholesalers, our Store Locator is SEO-friendly & flexible with on-brand designs. As an omnichannel solutions provider, stockinstore integrates with Google Business Profile and our other solutions including Click & Collect, Find in Store for retailers and wholesalers, Ship from Store & Google Local Inventory Listings. Please note this App is not a One-Click Install. Use one interface to manage store details and trading hours across all stockinstore solutions. Perfect for retailers, franchises and wholesalers, our Store Locator is SEO-friendly & flexible with on-brand designs. As an omnichannel solutions provider, stockinstore integrates with Google Business Profile and our other solutions including Click & Collect, Find in Store for retailers and wholesalers, Ship from Store & Google Local Inventory Listings. Please note this App is not a One-Click Install. more One interface to update & display store details and trading hours Different landing page layouts, map styles, and store detail designs Integrates with Google Business Profile & all stockinstore solutions Improve Google rankings with SEO-friendly URLs for individual store pages Use pre-set public holidays to customise each store's trading days & hours

5.0(Reviews)

Easily create a powerful, customizable, mobile-friendly store & dealer locator map. Stockist makes it simple to add a searchable store map to your site. Our thoughtfully designed store locator can help increase your in-store sales, reduce customer support inquiries, and build trust in your brand. It's a great way to highlight your stores, retailers, dealers, and more. Plus, our insightful search analytics show exactly where customers are looking for your products. We invite you to try Stockist and see why our service is the trusted solution for your store or retailer map. Stockist makes it simple to add a searchable store map to your site. Our thoughtfully designed store locator can help increase your in-store sales, reduce customer support inquiries, and build trust in your brand. It's a great way to highlight your stores, retailers, dealers, and more. Plus, our insightful search analytics show exactly where customers are looking for your products. We invite you to try Stockist and see why our service is the trusted solution for your store or retailer map. more Manage store listings one-by-one, import a spreadsheet, or sync a Google Sheet Customize colors, layout, translations, search options, and more Instantly show nearby results via geolocation and as the map is moved Insightful analytics show where customers are looking for your products Create unlimited search filters so customers can find exactly what they need

5.0(Reviews)

Help shoppers check product availability at nearby stores before they visit. Show variant availability by selected store on product pages. Choose locations, edit names and business hours, and add the Stofind Availability block to a product template. Shoppers can search locations and view stock status, hours, and directions. With browser location permission and saved store coordinates, Stofind can sort locations by distance and show distances. Choose an inline, popup, or right-side drawer, and customize text, colors, typography, and CSS in the theme editor. Show variant availability by selected store on product pages. Choose locations, edit names and business hours, and add the Stofind Availability block to a product template. Shoppers can search locations and view stock status, hours, and directions. With browser location permission and saved store coordinates, Stofind can sort locations by distance and show distances. Choose an inline, popup, or right-side drawer, and customize text, colors, typography, and CSS in the theme editor. more Show product variant stock at selected store locations. Set customer-facing location names and business hours. Show stock statuses and hide out-of-stock locations. Sort and display distances when location access and coordinates are available. Choose inline, popup, or right-side drawer layouts with theme editor styling.

3.0(Reviews)

Create AI FAQ pages, product FAQs, FAQ schema, instant answers & live chat with AI Chatbot StoreFAQ helps merchants build SEO-friendly FAQ pages, product FAQs, and an AI Chatbot for instant customer support. Connect StoreFAQ to Claude and ChatGPT with MCP to write, update, and manage FAQs through simple chat prompts. Create answers faster with AI, organize them with a drag-and-drop builder, and display them anywhere. Add FAQ schema/JSON-LD for search visibility, and use the AI Chatbot, Instant Answer, and Live Chat to reduce repetitive support tickets. StoreFAQ helps merchants build SEO-friendly FAQ pages, product FAQs, and an AI Chatbot for instant customer support. Connect StoreFAQ to Claude and ChatGPT with MCP to write, update, and manage FAQs through simple chat prompts. Create answers faster with AI, organize them with a drag-and-drop builder, and display them anywhere. Add FAQ schema/JSON-LD for search visibility, and use the AI Chatbot, Instant Answer, and Live Chat to reduce repetitive support tickets. more Reduce support tickets with AI-generated FAQs and instant answers Add FAQ schema / JSON-LD for SEO with product FAQ content and structured answers Answer product queries in real time with AI Chatbot and Live Chat Export or Import FAQs easily & build your customer help center instantly Manage FAQs by chatting with Claude, ChatGPT, or Cursor via MCP

5.0(Reviews)

Store Locator App | No API Key Required During Trial Storemapper helps customers find nearby stores, dealers, retailers, and distributors with a customizable store locator for Shopify. It’s designed for brands managing multiple locations that need a faster way to update store information, organize large location networks, and help customers find the right location more easily. The app includes bulk location management, flexible customization options, autocomplete search, filters, and built-in analytics. Storemapper helps customers find nearby stores, dealers, retailers, and distributors with a customizable store locator for Shopify. It’s designed for brands managing multiple locations that need a faster way to update store information, organize large location networks, and help customers find the right location more easily. The app includes bulk location management, flexible customization options, autocomplete search, filters, and built-in analytics. more Bulk upload and manage store locations with CSV, Google Drive, and GBP sync Create multiple maps for different brands, regions, or location groups Customize your store locator with custom CSS, layouts, and custom fields Track store searches and location engagement with built-in analytics Display business hours, Google reviews, store details, and contact information

4.9(Reviews)

Send shoppers to the nearest shop that sells you. When none is near, they can leave their details. Shoppers who search your locator are ready to visit. Send each one to the right shop. StoreRocket shows the nearest shop, stockist or dealer first, filtered by retailer or product, with hours and directions, in their language. It runs on your Shopify store or any site you own, imports from a CSV or your Google Sheet, and never edits your theme. Every search is saved, so you can see where shoppers want you and where to sell next. When no shop is near, shoppers can leave their details instead. Shoppers who search your locator are ready to visit. Send each one to the right shop. StoreRocket shows the nearest shop, stockist or dealer first, filtered by retailer or product, with hours and directions, in their language. It runs on your Shopify store or any site you own, imports from a CSV or your Google Sheet, and never edits your theme. Every search is saved, so you can see where shoppers want you and where to sell next. When no shop is near, shoppers can leave their details instead. more Nearest shop first, filtered by retailer, product line or store type Adds a Store Locator page on install, and embeds on any site you own Import your locations from a CSV or a Google Sheet When no shop is near, a form lets shoppers leave their details See where shoppers search for you, so you know where to sell next

4.8(Reviews)

Add shoppable Instagram and TikTok videos to your store. Unlimited videos and views to boost sales. Turn TikTok, Reels, and UGC into shoppable videos that boost engagement, trust, and conversions. Add carousels, stories, spotlights, grids, video banners and galleries to any page. Fast, SEO-friendly video player loads instantly with autoplay and adaptive streaming. Auto-sync with TikTok & Instagram keeps your store fresh daily. AI Smart Tagging automatically matches products to videos. Video descriptions for GEO/SEO optimization. Distribute videos on Shop app. Run A/B test to see performance Turn TikTok, Reels, and UGC into shoppable videos that boost engagement, trust, and conversions. Add carousels, stories, spotlights, grids, video banners and galleries to any page. Fast, SEO-friendly video player loads instantly with autoplay and adaptive streaming. Auto-sync with TikTok & Instagram keeps your store fresh daily. AI Smart Tagging automatically matches products to videos. Video descriptions for GEO/SEO optimization. Distribute videos on Shop app. Run A/B test to see performance more Shoppable video widgets – Carousels, stories, grids, popups, and more. Import & sync TikTok + Reels – One-click import or auto-sync content AI Smart Tagging – Auto-match products to videos instantly Track revenue per visitor, AOV, watcher cohorts, and more. Auto captions for 40 languages, built for WCGA 2.2 AA

4.9(Reviews)

Promote flash sale using announcement bar banners with Call to Action to boost flash sales. Announce flash sales with this essential announcement bar banner app. Share banners like a scrolling announcement bar (moving announcement bar / marquee), multiple rotating announcement banner (announcement slider bar / caroussel), multi announcement bar, discount banner, coupon bar, annoucement bar or a simple sticky announcement bar banner,scrolling text marquee, banner slider, email collection bar to capture emails and more. Announce flash sales with this essential announcement bar banner app. Share banners like a scrolling announcement bar (moving announcement bar / marquee), multiple rotating announcement banner (announcement slider bar / caroussel), multi announcement bar, discount banner, coupon bar, annoucement bar or a simple sticky announcement bar banner,scrolling text marquee, banner slider, email collection bar to capture emails and more. more Top Bar (hello bar): Share sticky announcement bar, checkout banner and marquee Rotating Announcement Bar: scrolling banner, moving bar, running banner Animated Announcement Bar: scrolling announcement bar, running announcement bar Discount Code Banner: Discount announcement bar, smart bars for flash sale promo Free Shipping Bar: Add smart bars with free shipping announcements and marquee

5.0(Reviews)

Add gift wrapping, gift box, gift note and gift receipt at checkout. Upsell gifting to boost AOV. Shoppers love gifting: turn that love into revenue. Super adds paid or free gift wrap options, gift wrapping, gift messages, gift notes, greeting cards, gift with purchase, gift receipts and a gift box as a gift wrap add on. Show them as a checkbox or pop up on the product page, cart, cart drawer and Shopify Plus checkout. Gift options print on the packing slip and invoice, and gift orders are auto tagged. Upsell gifting and boost AOV for Halloween, Black Friday, Cyber Monday and Christmas. Shoppers love gifting: turn that love into revenue. Super adds paid or free gift wrap options, gift wrapping, gift messages, gift notes, greeting cards, gift with purchase, gift receipts and a gift box as a gift wrap add on. Show them as a checkbox or pop up on the product page, cart, cart drawer and Shopify Plus checkout. Gift options print on the packing slip and invoice, and gift orders are auto tagged. Upsell gifting and boost AOV for Halloween, Black Friday, Cyber Monday and Christmas. more Gift wrap options: unlimited paid or free gift wrapping, gift message & receipt Gift wrap checkout: show gift options in Shopify Plus checkout, cart & drawer Gift box, gift note & greeting card upsell with automatic gift order tags Gift wrap for specific products or store wide, with custom images & prices Supports orders from Roposo Clout, GlowRoad, Baapstore, Raffle and more

4.7(Reviews)

High-speed slide cart drawer to lift AOV, offer in-house shipping protection & keep 100% margin. Transform your Shopify cart into a high-converting revenue drawer with zero theme lag. Supercart empowers merchants to boost average order value through 1-click in-cart upsells, product bundles, and multi-tier free shipping progress meters. Keep 100% of package protection revenue by replacing lost shipments at wholesale cost rather than paying broker fees. Enjoy transparent flat pricing with 0% GMV commission, sub-10ms reactive performance, and full Online Store 2.0 theme compatibility. Transform your Shopify cart into a high-converting revenue drawer with zero theme lag. Supercart empowers merchants to boost average order value through 1-click in-cart upsells, product bundles, and multi-tier free shipping progress meters. Keep 100% of package protection revenue by replacing lost shipments at wholesale cost rather than paying broker fees. Enjoy transparent flat pricing with 0% GMV commission, sub-10ms reactive performance, and full Online Store 2.0 theme compatibility. more In-house shipping protection: retain 100% of fee margin with zero broker cut. Dynamic free shipping bar, free gift unlock rewards, and rush packing. One-click in-cart upsells, product bundles, cross-sells, and cart rules. Sub-10ms reactive slide cart drawer engineered for Online Store 2.0 themes. Transparent flat-rate pricing with strict 0% GMV commission on your sales.

5.0(Reviews)

Customizable Store Locator To Drive traffic To Your Store With An Interactive Maps Display And Easy Do you have retail or distributor stores you'd like to showcase on your website? Our app is perfect for you! Seamlessly integrating with Shopify website, it uses Google Maps to help customers easily find store locations with precise addresses. You can add unlimited store locations, organize them as you prefer, and update details effortlessly. Set default values or add custom fields to suit your needs. Our app builds brand trust and increases in-store sales, making it an essential tool for you. Do you have retail or distributor stores you'd like to showcase on your website? Our app is perfect for you! Seamlessly integrating with Shopify website, it uses Google Maps to help customers easily find store locations with precise addresses. You can add unlimited store locations, organize them as you prefer, and update details effortlessly. Set default values or add custom fields to suit your needs. Our app builds brand trust and increases in-store sales, making it an essential tool for you. more Show nearby store based on the customer's shared location or IP location Search stores by address, city, state, postcode or tags with dynamic results. Embed Google Maps with custom pins to use Google's accurate geo locator Customize maps based your store's theme like color / font and map preference Load unlimited stores, set featured stores and add custom fields

0.0(Reviews)

All-in-one contact form builder app to create custom forms, customer approval features, & lock pages Build custom forms with a powerful form builder app. Create contact forms, customer registration, wholesale (B2B) registration, and product enquiry forms using conditional logic, file uploads, and multi-step layouts. Approve or auto-approve customers, assign tags, and store data in customer metafields. Lock pages, restrict content by login status, and redirect users. Includes SMTP email support, admin notifications, and 404 auto-redirect for better control. Build custom forms with a powerful form builder app. Create contact forms, customer registration, wholesale (B2B) registration, and product enquiry forms using conditional logic, file uploads, and multi-step layouts. Approve or auto-approve customers, assign tags, and store data in customer metafields. Lock pages, restrict content by login status, and redirect users. Includes SMTP email support, admin notifications, and 404 auto-redirect for better control. more Advance registration, Wholesale registration, POS forms, Approve new customers Logical Hide/Show Field, Conditional Logic, Lock Pages, Auto Redirect 404 links Custom form builder, contact form builder Upload fields, Registrations Form builder, Customer registration custom forms with custom email domain (SMTP) Store Data in Customer Metafields, Product enquiry forms, Advance form builder

4.7(Reviews)

Swatcheroo - Automatically replaces product dropdown options with nice color & image swatches. The Swatcheroo is an app that uses product variants options and automatically replaces them with swatches. You do not need to create new variant options for the app, just edit the style for existing options on your store. You can easily customize all existing options in your store (like Sizes, Materials, Colors) with one click. No programming/coding required: The app installs itself instantly and requires no coding. It works with Shopify themes without any modification from your side. The Swatcheroo is an app that uses product variants options and automatically replaces them with swatches. You do not need to create new variant options for the app, just edit the style for existing options on your store. You can easily customize all existing options in your store (like Sizes, Materials, Colors) with one click. No programming/coding required: The app installs itself instantly and requires no coding. It works with Shopify themes without any modification from your side. more Supporting all product option types (like Sizes, Materials, Colors). Customizable Style. Set on any page of your store. Easy to use app and requires no coding! Instant install and leaves no code resid

0.0(Reviews)

Add Beautiful Color & Image Swatches to your Product and Collection Pages Swatches Dotify replaces variant dropdowns with visual swatches to help customers select product options more easily. It works on product and collection pages and adapts to different themes and layouts. You can customize the appearance of swatches to match their store design and clearly indicate unavailable variants, improving clarity when browsing products and reducing confusion when choosing options. Swatches Dotify replaces variant dropdowns with visual swatches to help customers select product options more easily. It works on product and collection pages and adapts to different themes and layouts. You can customize the appearance of swatches to match their store design and clearly indicate unavailable variants, improving clarity when browsing products and reducing confusion when choosing options. more Use Color & Image Swatches with your Shopify product options. Choose between a variety of swatch themes. Add swatches on your Collection Pages. Auto-detect color options in your shop for quick setup. Detects soldout variants and updates the swatches to reflect the availability

4.5(Reviews)

Replace variant dropdowns with image & color swatches on product and collection pages Variant dropdowns make it hard for customers to visualize product options. Swatchify replaces them with clean, interactive image and color swatches for faster, clearer selection. Show swatches on product and collection pages to improve the shopping experience and help customers choose with confidence. Variant dropdowns make it hard for customers to visualize product options. Swatchify replaces them with clean, interactive image and color swatches for faster, clearer selection. Show swatches on product and collection pages to improve the shopping experience and help customers choose with confidence. more Custom swatch layouts with clean design and smooth animations Link products with swatches to improve discovery and navigation Sticky add to cart with real-time inventory and price display Multi-language support with automatic detection across 40+ languages Show swatches on product and collection pages

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.