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.
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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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
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.
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
Increase your bookings, revenue & retention using the Sesami platform omnichannel. 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.
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.
Add a shake animation to your 'Add to Cart' button to enhance customer interaction 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
Drive sales with cause-aligned shopping experiences Together with our partners, we’re shifting the impact of ecommerce by embedding meaningful, value-driven touchpoints throughout the customer journey. We help align your brand and product catalogue with the causes your customers care about most. Thanks to our new impact ad blocks infrastructure, and unique impact content and visual asset library, cause in commerce has never been so on brand. Together with our partners, we’re shifting the impact of ecommerce by embedding meaningful, value-driven touchpoints throughout the customer journey. We help align your brand and product catalogue with the causes your customers care about most. Thanks to our new impact ad blocks infrastructure, and unique impact content and visual asset library, cause in commerce has never been so on brand. more Easy no code installation with app blocks infrastructure Customize visual display settings and features to match your brand Embedded app dashboard with customer, impact, and KPI tracking Protect Nature, Safeguard Oceans, Preserve Biodiversity, build Renewable Energy Customer contributions collected automatically via Billing API
Boost revenue and trust with branded order guarantee, free returns, and instant resolutions. Take control of delivery issues, returns, and exchanges through a fully branded platform built to reinforce customer confidence. Manage lost, damaged, or missing orders from your dashboard while maintaining ownership of post-purchase policies. Branded tracking, self-service issue intake, and a customer-facing returns portal reduce friction and strengthen customer relationships. Each guaranteed order plants one tree and unlocks a $5 charitable donation chosen by your customer. Take control of delivery issues, returns, and exchanges through a fully branded platform built to reinforce customer confidence. Manage lost, damaged, or missing orders from your dashboard while maintaining ownership of post-purchase policies. Branded tracking, self-service issue intake, and a customer-facing returns portal reduce friction and strengthen customer relationships. Each guaranteed order plants one tree and unlocks a $5 charitable donation chosen by your customer. more Brand-owned order Guarantee Centralized delivery issue management Free returns and automated exchanges Branded tracking and claim experiences Purpose-driven customer engagement options
Expand revenue and secure orders with own custom shipping protection against damage, loss, and theft ShipGuard: Shipping Protection helps merchants secure shipments with own in-house customizable order protection against loss, damage, or theft. It simplifies claims management with automated tools for refunds, reshipments, and reorders. Merchants can define exclusions for specific products or variants and manage digital insurance fulfillment with flexible status options. The app integrates seamlessly with Shopify, improving store operations and customer satisfaction. ShipGuard: Shipping Protection helps merchants secure shipments with own in-house customizable order protection against loss, damage, or theft. It simplifies claims management with automated tools for refunds, reshipments, and reorders. Merchants can define exclusions for specific products or variants and manage digital insurance fulfillment with flexible status options. The app integrates seamlessly with Shopify, improving store operations and customer satisfaction. more Define customizable shipping protection fees at checkout for customers. Set exclusions for specific products or variants from the insurance widget. Fully integrated claims management system for seamless issue resolution. Digital insurance fulfillment with flexible status options after purchase. Seamless Shopify checkout extension for easy integration and usage.
Add estimated delivery date and shipping date to boost sales. Display expected delivery dates. Shipping Delivery Estimate - display estimated delivery dates. Easily display when a product should arrive by. Simple set-up and easy to use. Build trust and increase conversion rates. Display your estimated delivery date message on any page or product. Set specific rules for products and collections. Easily display when products should be expected by. Show the expected delivery date and day. Shipping Delivery Estimate - display estimated delivery dates. Easily display when a product should arrive by. Simple set-up and easy to use. Build trust and increase conversion rates. Display your estimated delivery date message on any page or product. Set specific rules for products and collections. Easily display when products should be expected by. Show the expected delivery date and day. more Increase conversion rate - Add estimated arrival dates on product pages. Display delivery date - Display expected date when products will be delivered. Increase conversions - When will it arrive? Answer it for them with this app. Easy to use, simple setup - Add delivery date to your product within minutes. No coding skills required - Fully customise according to your store design.
Show customer progress when they put items in their carts & inform them when they get free shipping. Here's how it works: 1. When users first visit your store, a welcome bar displays your current promotion, like "buy 2, get 1 free," "spend $100 to get a free gift," or "spend $100 for free shipping." 2. As they add items to their cart, the bar updates, showing what else is needed to qualify for the reward. 3. When they reach the requirement, a final message confirms they qualify for the bonus or free shipping. Here's how it works: 1. When users first visit your store, a welcome bar displays your current promotion, like "buy 2, get 1 free," "spend $100 to get a free gift," or "spend $100 for free shipping." 2. As they add items to their cart, the bar updates, showing what else is needed to qualify for the reward. 3. When they reach the requirement, a final message confirms they qualify for the bonus or free shipping. more Set up any conditions to show the bar to visitors and where to display the bar. Unlimited number of offers for store visitors. Mobile-friendly app. Works with any theme.
Easy to use visual page editor to design blog posts, product pages, landing pages & theme sections Use our visual page editor for all page types including: blog posts, product pages, collection pages, home page and landing pages. Design using our out-of-the-box templates, or create something unique with our elements (sliders, video, countdown, product tabs & more). Save any creation as a snippet and reuse it for future designs. Make universal changes to your Shopify template pages with our theme sections editor. Use our visual page editor for all page types including: blog posts, product pages, collection pages, home page and landing pages. Design using our out-of-the-box templates, or create something unique with our elements (sliders, video, countdown, product tabs & more). Save any creation as a snippet and reuse it for future designs. Make universal changes to your Shopify template pages with our theme sections editor. more Shopify Plus Certified Import and optimize Shopify 2.0 pages & sections. Create rich product page and collection page experiences with a visual editor Build landing pages for ad campaigns and promotions Design new site pages like the homepage with organized layout control
Increase sales by providing complete look for your customers with bundled upsell products With BeUniq Shop The Look, merchants can easily assign different products to a main product to give a complete look to their users. A Shop the Look button is added on the product page, and when clicked, it shows the assigned products in the sidebar drawer. With multiple settings options, the merchants can set the button view as per their themes look and feel. Easy way to group your products together and increase sales while reducing user time. With BeUniq Shop The Look, merchants can easily assign different products to a main product to give a complete look to their users. A Shop the Look button is added on the product page, and when clicked, it shows the assigned products in the sidebar drawer. With multiple settings options, the merchants can set the button view as per their themes look and feel. Easy way to group your products together and increase sales while reducing user time. more Boost sales with shop the look upsell products. Shop the Look as Button or Link. Easy step to relocate Shop The Look One click install & no coding skills required / 2.0 Compatible No theme files are changed and no liquid file is installed Desktop & Mobile compatible | Show as Link or Button which will open drawer
Create beautiful lookbook galleries and let shoppers complete the look by buying in one click. Show a clickable lookbook that encourages shoppers to buy more. If you sell multiple complementary products (eg., cardigan with trousers, table with chairs), this is the app for you. Simply upload an image and tag products on it, then customers will be able to add the entire set in one click! The widget is lightweight and well-optimized to prevent website slowdowns. The app itself is easy to use and highly customizable to match your brand theme. Set it up in less than 10 minutes. Show a clickable lookbook that encourages shoppers to buy more. If you sell multiple complementary products (eg., cardigan with trousers, table with chairs), this is the app for you. Simply upload an image and tag products on it, then customers will be able to add the entire set in one click! The widget is lightweight and well-optimized to prevent website slowdowns. The app itself is easy to use and highly customizable to match your brand theme. Set it up in less than 10 minutes. more Supports multiple aspect ratios (square, tall, wide) to suit any image Highly customizable widget that lets you edit spacing, roundness, and more Looks great on all devices and mobile friendly
Make it easy for users to find your stores with the Shoppy Store Locator. Shopp Store Locator app helps merchants drive foot traffic and improve sales by making it easy for customers to find nearby locations. Add a smart, on brand and easy to use store locator to your Shopify store in a few clicks & create pages for each of your stores automatically. Retailers, franchises, and service-based businesses gain from offering a seamless store discovery experience. Shopp Store Locator app helps merchants drive foot traffic and improve sales by making it easy for customers to find nearby locations. Add a smart, on brand and easy to use store locator to your Shopify store in a few clicks & create pages for each of your stores automatically. Retailers, franchises, and service-based businesses gain from offering a seamless store discovery experience. more Store tagging: Organize and filter stores easily with custom tags. Bulk import & updating: Quickly add or update multiple stores in one go. Google My Business sync: Sync store info directly with Google My Business. Address Auto Suggest: Auto-complete addresses for faster, accurate entry.
Announcement bars, Countdowns, Free Shipping Bar, Promotions, Up Sells, Scheduling and targeting. ShoutBar helps shops boost engagement and drive sales with eye-catching announcement bars. Easily showcase promotions, countdowns, free shipping offers, and more—fully customizable to match your brand. Advanced scheduling and targeting ensure the right message reaches the right audience at the right time. Perfect for stores looking to increase conversions, highlight special deals, and enhance customer experience effortlessly. Simple setup, powerful results! ShoutBar helps shops boost engagement and drive sales with eye-catching announcement bars. Easily showcase promotions, countdowns, free shipping offers, and more—fully customizable to match your brand. Advanced scheduling and targeting ensure the right message reaches the right audience at the right time. Perfect for stores looking to increase conversions, highlight special deals, and enhance customer experience effortlessly. Simple setup, powerful results! more Customizable Announcement Bars – Match your brand with flexible design options Targeting & Scheduling – Display bars to the right audience at the right time Countdown Timers & Urgency Boosters – Drive sales with time-sensitive promotions Free Shipping & Promo Highlights – Easily showcase special offers Mobile-Friendly – Optimized for seamless performance on all devices
Sell custom neon, LED, channel letter and wooden signs using a configurable sign product builder. Win more custom sign sales by letting customers create their unique sign with our easy-to-use sign designer. Ensure your store always makes a profit on every sign order with our multiple advanced pricing and sizing systems. Save time by automating your manufacturing logistics workflow with custom emails and an SVG file of the sign design specifically for manufacturing. Live render sign options and pricing to help win the sale. Find and work with manufacturers from all around the world. Win more custom sign sales by letting customers create their unique sign with our easy-to-use sign designer. Ensure your store always makes a profit on every sign order with our multiple advanced pricing and sizing systems. Save time by automating your manufacturing logistics workflow with custom emails and an SVG file of the sign design specifically for manufacturing. Live render sign options and pricing to help win the sale. Find and work with manufacturers from all around the world. more Sell Neon, LED, Lightbox, Channel letter, UV, Metal plate, Wood board signs AI that can transform JPG, PNG, SVGS into a production sign design template Price per letter, length of material, CM2 and volumetric CM3 pricing options. Multi-currency, multi-lingual support, Accurate price measurements Use custom CSS or no-code options to update the theme.
Build any bundle like mix and match discounts and free gift with inventory sync & order fulfillment. Boost AOV with product bundles, from mix and match bundles, subscription bundles, BOGO free gifts, volume discounts, single- & multi-SKU bundles, build your own bundle, B2B multipacks, and AI suggested bundles from order history. Bypass Shopify’s 2048 variant limit with unlimited bundle options. Integrate POS, ERP, WMS, and 3PL to break down bundles into individual SKUs for order fulfillment and inventory sync. Upsell bundles with their own landing page using little-to-no front-end components. Boost AOV with product bundles, from mix and match bundles, subscription bundles, BOGO free gifts, volume discounts, single- & multi-SKU bundles, build your own bundle, B2B multipacks, and AI suggested bundles from order history. Bypass Shopify’s 2048 variant limit with unlimited bundle options. Integrate POS, ERP, WMS, and 3PL to break down bundles into individual SKUs for order fulfillment and inventory sync. Upsell bundles with their own landing page using little-to-no front-end components. more Breakdown Product Bundles for Easy Order Fulfillment and Realtime Inventory Sync Boost Sales with Mix-and-Match Bundles, Free Gifts, and Quantity Discounts Advanced Analytics: Track Bundle Sales, Conversion Rates, and AOV Build Customizable Unlimited Bundle Options to Exceed Shopify 2000 Variant Limit Integrates with Upsell Post-purchase Apps, 3PL, WMS, MCF, Shipping Software, POS
Easy-to-use, simple yet customizable size charts and fit guide to raise sales and reduce returns. The Sized app makes creating size charts and fit guides quick and easy, helping customers confidently choose the proper size. Customizable charts reduce returns and abandoned carts while boosting sales and satisfaction. Tailor your size charts with text, images, or measurement details for apparel, shoes, and more. Assign charts to product(s) or products in collections. Sized ensures your customers get the perfect fit the first time, enhancing their shopping satisfaction. The Sized app makes creating size charts and fit guides quick and easy, helping customers confidently choose the proper size. Customizable charts reduce returns and abandoned carts while boosting sales and satisfaction. Tailor your size charts with text, images, or measurement details for apparel, shoes, and more. Assign charts to product(s) or products in collections. Sized ensures your customers get the perfect fit the first time, enhancing their shopping satisfaction. more Customizable Size Chart: add text, images, customize colors to fit store design Use 14 ready-to-use size chart templates or upload your own product images Intuitive and simple size chart editor saves your time and makes app easy to use Apply size chart to product(s), products in the collection, or whole collection Feature to exclude products to apply size charts
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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.