Size charts, size guides and a “Find my size” AI size recommender, built in minutes Build size charts, size guides and fit quizzes in minutes with SmartSize AI and a modular editor. Import and export all your size charts in bulk. Upload an image or start from templates for men, women, lingerie, kids and pets. Add tabs, AI translations, unit conversion and international sizing. Turn on “Find my size”, an AI fit finder and size recommender. Shoppers answer once and are remembered on every product and visit. Buttons place themselves on any theme, or our team sets it up. Build size charts, size guides and fit quizzes in minutes with SmartSize AI and a modular editor. Import and export all your size charts in bulk. Upload an image or start from templates for men, women, lingerie, kids and pets. Add tabs, AI translations, unit conversion and international sizing. Turn on “Find my size”, an AI fit finder and size recommender. Shoppers answer once and are remembered on every product and visit. Buttons place themselves on any theme, or our team sets it up. more Size chart templates for men, women, kids, lingerie and pets. Bulk import/export AI builds a size guide from a photo or screenshot of your existing chart “Find my size” AI fit finder: shoppers answer once, get their size everywhere Size charts and size quiz in 25+ languages. AI translation, unit conversion Drag-and-drop size guide blocks. The button places itself, or we set it up
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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Boost your sales and AoV with personalized & smart product recommendations, bundles, and promotions. Improve sales with smart recommendations, product bundles, and promotions with Lucid. It's easy to use, fast, and customizable, allowing you to bring Amazon-like features to your store and upsell like a pro. Customize the designs to match your store aesthetics and easily add discounts to your product bundles and promoted products for flash sales. Plus, with support for localization, you can upsell across the world. Don't miss out on boosting your sales and offering a personalized experience. Improve sales with smart recommendations, product bundles, and promotions with Lucid. It's easy to use, fast, and customizable, allowing you to bring Amazon-like features to your store and upsell like a pro. Customize the designs to match your store aesthetics and easily add discounts to your product bundles and promoted products for flash sales. Plus, with support for localization, you can upsell across the world. Don't miss out on boosting your sales and offering a personalized experience. more Effortless Setup: Associate, Choose Type, Customize Design to Match Store Design Experience the Power of Variant Options-Controlled Recommendations and Bundles Product Recommendations: Related Products, Shop the Look & Trending Products Product Bundles: Frequently Bought Together, Complementary Products & Discounts Product Promotion: Product Advertising, Flash Sales, Deals & Discounts
Turn TikTok & Instagram Feeds into shoppable videos that drive BFCM sales. Build trust and loyalty. Socialwidget (Instafeed PRO) - Display Instagram content — photos, videos & carousels on your store, converting social media posts into engaging product showcases. Socialwidget empowers you to create shoppable Instagram feeds that allow customers to shop directly from your posts, maximizing sales opportunities. Easily match your brand with custom social media feeds using our ready-made templates, optimized for all devices. Build trust, credibility, and smooth shopping experiences! Socialwidget (Instafeed PRO) - Display Instagram content — photos, videos & carousels on your store, converting social media posts into engaging product showcases. Socialwidget empowers you to create shoppable Instagram feeds that allow customers to shop directly from your posts, maximizing sales opportunities. Easily match your brand with custom social media feeds using our ready-made templates, optimized for all devices. Build trust, credibility, and smooth shopping experiences! more Create Instagram feeds on your website to increase social proof and engagement Tag products in Instagram media to make them shoppable on your store Show social media posts (photos & videos) with eye-catching layouts Sort posts from Instagram hashtags and public accounts to easily organize feeds Automatically drive fresh new content with auto-updating posts & videos
Improve conversion rates with monthly payment white label on-site messaging. As Splitit is completely different to all other buy now, pay later providers, it’s important to communicate to your shoppers that they can pay in installments, while they are still browsing your site. Flexible payment options can be the difference, and our white-label On-site messaging app integrates seamlessly across your site, offering tailored messages, transparent pricing, and banners. Leverage white-label customization for a stronger brand presence. As Splitit is completely different to all other buy now, pay later providers, it’s important to communicate to your shoppers that they can pay in installments, while they are still browsing your site. Flexible payment options can be the difference, and our white-label On-site messaging app integrates seamlessly across your site, offering tailored messages, transparent pricing, and banners. Leverage white-label customization for a stronger brand presence. more With our app you can let your shoppers know they can pay with installments. Communicate the benefits of paying over time throughout your customers journey. Control the look and feel of the app to match your brand
Product color swatches help customers choose the correct product. Using the Product color swatches app you can easily create multiple groups with different colors and custom images. Product swatches can be a single-color, two-color, product image, custom image, and pill text. App swatches group instantly loads on the product page and doesn’t slow down your product page. The app works with all types of themes. Using the Product color swatches app you can easily create multiple groups with different colors and custom images. Product swatches can be a single-color, two-color, product image, custom image, and pill text. App swatches group instantly loads on the product page and doesn’t slow down your product page. The app works with all types of themes. more Mange group with multiple product style swatches. Create single-color, two-color, custom image, product image, or pill swatches. Customize swatch label, out-of-stock, shape, and button style in appearance.
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.
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.
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
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
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.
More Conversions w/ Sticky Add to Cart, Quick Buy Now Button, Cart Slider, Sticky Cart & Cart Upsell Maximize cart conversions on your Shopify store with STKY Sticky Add To Cart. Ensure Add to Cart is always visible, reducing cart abandonment. Countdown Timer urgency feature converts even more! Quick Buy Button enables swift orders directly on product pages. The Sticky Checkout Bar gives a cart overview, helping checkout. With our Ajax Slider Cart Drawer, even upsell & cross-sell additional products & increase AOV. Sticky Cart, Quick Buy, Buy Now Button & Add To Cart Bar maximize Shopify sales! Maximize cart conversions on your Shopify store with STKY Sticky Add To Cart. Ensure Add to Cart is always visible, reducing cart abandonment. Countdown Timer urgency feature converts even more! Quick Buy Button enables swift orders directly on product pages. The Sticky Checkout Bar gives a cart overview, helping checkout. With our Ajax Slider Cart Drawer, even upsell & cross-sell additional products & increase AOV. Sticky Cart, Quick Buy, Buy Now Button & Add To Cart Bar maximize Shopify sales! more Sticky Add To Cart Bar & Sticky Cart - now with Countdown Timer for urgency Sticky Cart Icons & Add To Cart Bar - always in view for quick checkout Quick Buy Button & Buy Now Button - help shoppers complete purchase quickly Slider Cart Drawer w/Upsells - upsell & cross sell products to increase revenue Quick View, Quick Buy & Buy Now - view, add to cart, or buy with just 1 click
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
Easily display your inventory to your customers on product pages. You will be able to display the inventory information of any product per location on your product pages and set your business hours up so that your customers know when you are open. You can easily customize its styles, appearance, and so on to your store. You will be able to display the inventory information of any product per location on your product pages and set your business hours up so that your customers know when you are open. You can easily customize its styles, appearance, and so on to your store. more Display stock, product availability or inventory information on product pages. Display inventory like "In stock", "Out of stock" etc, or "5 in stock". Add your trading or business hours per location. Customize it to your store's appearance, or change it just like you want.
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, FAQ accordions, and an AI Chatbot for instant customer support. Create answers faster with AI, organize FAQs with a drag-and-drop builder, and display them anywhere: FAQ page, product page, collection page, or custom page. Add FAQ schema/JSON-LD to improve search visibility, use the AI Chatbot, Instant Answer, and Live Chat to answer shoppers in real time, and reduce repetitive support tickets without a heavy helpdesk setup. StoreFAQ helps merchants build SEO-friendly FAQ pages, product FAQs, FAQ accordions, and an AI Chatbot for instant customer support. Create answers faster with AI, organize FAQs with a drag-and-drop builder, and display them anywhere: FAQ page, product page, collection page, or custom page. Add FAQ schema/JSON-LD to improve search visibility, use the AI Chatbot, Instant Answer, and Live Chat to answer shoppers in real time, and reduce repetitive support tickets without a heavy helpdesk setup. 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 Write answers instantly for Frequently Asked Questions with the help of AI
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 Help customers find the right location faster with filters & Google autocomplete 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
Drive sales with AI friendly shoppable video carousels, Instagram and TikTok sliders. 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. 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. 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
Earn more from every order with the power of gift wrap & gift message. Boost your AOV in 1 click. Shoppers love gifting: Turn that love into revenue. Super allows you to offer your customers multiple gift wraps, gift notes, greeting cards, gift with purchase, and a gift box right before checkout. With customizable design that fits every theme, cart, drawer cart & product page, Super drives more conversions, boosts sales, and upsell your store's AOV with the power of gifting, especially during holiday seasons & birthday events like Halloween, Black Friday Cyber Monday (BFCM) and Christmas. Shoppers love gifting: Turn that love into revenue. Super allows you to offer your customers multiple gift wraps, gift notes, greeting cards, gift with purchase, and a gift box right before checkout. With customizable design that fits every theme, cart, drawer cart & product page, Super drives more conversions, boosts sales, and upsell your store's AOV with the power of gifting, especially during holiday seasons & birthday events like Halloween, Black Friday Cyber Monday (BFCM) and Christmas. more Add unlimited paid/free gift wrapping, paid/free gift message & gift receipt Show the gift options in Shopify Plus Checkout page for supreme conversion rate Automatic gift with purchase order tags for easy fulfillment & insights. Show the gift options for specific products only or for all of your products Support orders from Roposo Clout, GlowRoad, GiftShip, Baapstore, Raffle and more
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.
Merchandise beautiful & converting collection pages in seconds with images/videos and smart sorting Depict is the ultimate app for merchandising & designing beautiful, curated, and high-converting collection pages on Shopify without having to write a single line of code. Easily sort products with AI rules, embed banners & campaign videos/imagery into the product grid & more in Depict's visual drag-and-drop editor. Use the power of visual storytelling to increase conversion & shopper engagement with look book-style collection grids. ⚡️ 1-click install. No developers required. Depict is the ultimate app for merchandising & designing beautiful, curated, and high-converting collection pages on Shopify without having to write a single line of code. Easily sort products with AI rules, embed banners & campaign videos/imagery into the product grid & more in Depict's visual drag-and-drop editor. Use the power of visual storytelling to increase conversion & shopper engagement with look book-style collection grids. ⚡️ 1-click install. No developers required. more Custom Content Cards - Embed images & videos with links in collection grids. Visual Drag & Drop - Instantly pin products. Preview mobile vs desktop layouts. AI Sorting Rules - Combine automated & manual rules to re-order products. Duplicate Product Cards - Highlight different product images per collection. Ecommerce Analytics - Collection views/clicks/CTR. Product sales & stock data.
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
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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.