Run promotions like a pro. Provide personalized incentives to your customers to increase AOV. Discount Ninja is a promotion engine that allows you to quickly set up promotions that convert. View real-time reports to know exactly how the app is growing your average order value. Personalized promotions come to life everywhere in your online store (product page, collections, cart and checkout). The app includes widgets to communicate your promotions to your audience throughout the buyer journey. They blend into your shop and allow you to stay on brand while you increase conversion. Discount Ninja is a promotion engine that allows you to quickly set up promotions that convert. View real-time reports to know exactly how the app is growing your average order value. Personalized promotions come to life everywhere in your online store (product page, collections, cart and checkout). The app includes widgets to communicate your promotions to your audience throughout the buyer journey. They blend into your shop and allow you to stay on brand while you increase conversion. more Combine & stack multiple offers: BOGO, free gift, tiered & volume discounts etc. Schedule promotions to start and stop automatically. Easily exclude collections or discounted products from sales. Offer private promotions to VIP customers using a discount link. Unlock the power of Shopify Functions for a scalable and native experience.
Custom CSS Shopify Apps
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Revolutionize Product Search and Discovery with Doofinder. Doofinder is the AI Search & Discovery platform for eCommerce that helps customers quickly find exactly what they need. Whether searching, browsing or chatting with the store. Its technology understands real intent and turns every interaction into a sales opportunity. It serves as a conversational AI layer, boosting conversion, revealing what customers want, what they can’t find, and where the biggest growth opportunities lie. Plug-and-play. No development required. See results from day one. Doofinder is the AI Search & Discovery platform for eCommerce that helps customers quickly find exactly what they need. Whether searching, browsing or chatting with the store. Its technology understands real intent and turns every interaction into a sales opportunity. It serves as a conversational AI layer, boosting conversion, revealing what customers want, what they can’t find, and where the biggest growth opportunities lie. Plug-and-play. No development required. See results from day one. more AI Assistant: Shoppers ask. Your AI answers, guides, and converts. AI Search: Runs on autopilot. Understands intent. Improves daily. Stats & Optimization: Revenue insights that turn search gaps into more sales. Recommendations: AI-driven suggestions that boost AOV from day one. Category Merchandising: Right products first. Zero dev work needed.
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 Custom pricing for text, images, clip-arts and patterns, tier pricing & minimum order quantity rules Bulk Ordering with Size & Color Variants, Layout Personalization, Remove Image Background Design engraving products in any device with multiple product sides design area
Customer-facing file share & file download widget to search, preview & instant download product file Embedded file library with download button for customer. Add product files from Shopify storage as public download files. Customer can browse & search file with search bar, preview PDF file & image; or download them. Share unlimited files like PDF catalog, manual, product PDF, csv price list, product sheet, PDF report, demo video, product spec sheet, lab report, audio download, warranty doc, csv download, certificate. Use case: file download page, doc search resource hub, video download page. Embedded file library with download button for customer. Add product files from Shopify storage as public download files. Customer can browse & search file with search bar, preview PDF file & image; or download them. Share unlimited files like PDF catalog, manual, product PDF, csv price list, product sheet, PDF report, demo video, product spec sheet, lab report, audio download, warranty doc, csv download, certificate. Use case: file download page, doc search resource hub, video download page. more File search bar - Let customer find PDF & other product file with keyword search Image popup & PDF preview alongside download button for other file formats File category - Group downloadable files into categories to keep them organized Customizable widget - Add custom CSS & translated language text as you need Support all file formats for file download like PDF, image, doc, video, csv file
Create product options with swatches & price calculators. Sell product bundles and discount upsells Dynamic Product Options is an app to manage customizable product options. Create configurable and bundle products of any complexity. Add math formulas and build your own price calculators. The app supports dependent/conditional custom options, templates, color and image swatches, quantity and tier prices for options, onetime fees, tooltips, absolute pricing, options for customer groups, mathematical formula pricing and much more. Dynamic Product Options is an app to manage customizable product options. Create configurable and bundle products of any complexity. Add math formulas and build your own price calculators. The app supports dependent/conditional custom options, templates, color and image swatches, quantity and tier prices for options, onetime fees, tooltips, absolute pricing, options for customer groups, mathematical formula pricing and much more. more Create unlimited custom options with conditional options and color swatches Create configurable and bundle products with separate SKUs Create price calculators of any complexity using your custom math formula The app has an intuitive UI and a lot of features The app can be integrated into any theme or page builder
Easily add a personalized Dropdown list on the cart page. Restrict checkout on selected values. Add a custom dropdown to your cart to collect important customer input before checkout. Use it to tag orders automatically and control whether customers can proceed based on their selection. Ideal for restricting delivery areas, letting customers choose pickup locations, shipping or payment methods, or applying custom conditions—no code or theme edits required. Add a custom dropdown to your cart to collect important customer input before checkout. Use it to tag orders automatically and control whether customers can proceed based on their selection. Ideal for restricting delivery areas, letting customers choose pickup locations, shipping or payment methods, or applying custom conditions—no code or theme edits required. more Easily add a dropdown to your cart page with fully customizable options. Automatically tag orders based on the customer’s selection. Block or allow checkout depending on the selected dropdown value.
Audience-driven upsells, slide cart, subscriptions, ab testing, checkout blocks, and custom widgets. The goal of this app is to increase conversion rate and average order value while offering an unparallel control on personalization. Add checkout blocks and extensions, power a customizable slide cart, bundles, recommendations, upsells, tiered discounts, swap to subscriptions, and reconvert customers to rebuy with 50+ customizable widgets for the entire site. Other features include AB testing, auto free gifts, BOGO, pop ups, one click upsells, post purchase upsells, timers, banners etc. The goal of this app is to increase conversion rate and average order value while offering an unparallel control on personalization. Add checkout blocks and extensions, power a customizable slide cart, bundles, recommendations, upsells, tiered discounts, swap to subscriptions, and reconvert customers to rebuy with 50+ customizable widgets for the entire site. Other features include AB testing, auto free gifts, BOGO, pop ups, one click upsells, post purchase upsells, timers, banners etc. more Personalized in cart upsells and cross-selling, tiered bars, free gifts and more Offer wiser upsells, functions, post purchase upsells, auto add free gift + more Connect segments of audiences to specific widgets for a true personalized store. Reconvert users with simple rebuy offers, bold offers, and swap to subscriptions Includes: Cart, Checkout Extensions, Bundles, BOGO, Free Gift, A/B Testing +
Grow via side cart drawer cart upsell, sticky add to cart bar, free shipping bar & slide cart upsell Sticky add to cart bar floating button always visible add to cart. Grow sales via side cart AI upsells. One Click checkout sticky Add to Cart button direct sale in product page. Sticky Side cart drawer offers instant cart overview w/o leaving page, slide cart offers cart upsell & cross sell like UpCart iCart Opus. Side Cart Slide cart to upsell & cross sell more product & grow average order value. Quick buy buttons -> add to cart speed. Free shipping bar shows progress to discounts, sticky cart. Sticky add to cart bar floating button always visible add to cart. Grow sales via side cart AI upsells. One Click checkout sticky Add to Cart button direct sale in product page. Sticky Side cart drawer offers instant cart overview w/o leaving page, slide cart offers cart upsell & cross sell like UpCart iCart Opus. Side Cart Slide cart to upsell & cross sell more product & grow average order value. Quick buy buttons -> add to cart speed. Free shipping bar shows progress to discounts, sticky cart. more Sticky Add to Cart Bar - Keep Add to Cart button always visible & cart drawer Side Cart Drawer Cart Upsell - AI Upsell & cross sell, Cart Upsell & Slide Cart Free Shipping Bar, Reward & Discount Bar, One Click Checkout, Countdown Sale bar Sticky Cart - keep cart always visible so customers can easily see, slide cart Quick Buy Button - allow customers to Add to Cart with one click on any page
Sell more via upsell popups, upgrade, bundle, and cross sell + post purchase offers to add to order! Increase order value with upsell & cross-sell offers & funnels. Reach customers when adding a product to cart, on cart page via popup offers or after order with post purchase offers. Offer customizable discounts, percentage, amount off, & free gifts! Offer related, frequently bought with, & complementary products using Shopify AI to tailor recommendations to your customers. Pop up offer to increase revenue by encouraging customers to buy more, with volume discounts and post purchase funnel. Increase order value with upsell & cross-sell offers & funnels. Reach customers when adding a product to cart, on cart page via popup offers or after order with post purchase offers. Offer customizable discounts, percentage, amount off, & free gifts! Offer related, frequently bought with, & complementary products using Shopify AI to tailor recommendations to your customers. Pop up offer to increase revenue by encouraging customers to buy more, with volume discounts and post purchase funnel. more Upsell Popups & cross-sell pop ups - offer complementary and/or related products Post Purchase offer - add items to order with one click after purchase is paid Bundles - offer BOGO, quantity breaks, BXGY, product bundles, volume discounts Checkout offers, thank you page, order confirmation, and order status offers Custom discounts - percentage off, amount off, and free gift offer popup
Custom Product Options and Customizer with Text, File Upload, Price Add-ons, Product Personalizer Max Out Sales on product pages with product options variants customizer. Add add-on price, custom field, custom text engraving for jewelry, embroidery, POD, gift wrap, laser engraving. Need sales-first custom product personalization customization? Product Personalizer Live Preview brings customer photo upload file, image upload, custom text field textbox real-time to lift customized product sales. Get conditional product variants options, product personalisation, product customizer configurator. Max Out Sales on product pages with product options variants customizer. Add add-on price, custom field, custom text engraving for jewelry, embroidery, POD, gift wrap, laser engraving. Need sales-first custom product personalization customization? Product Personalizer Live Preview brings customer photo upload file, image upload, custom text field textbox real-time to lift customized product sales. Get conditional product variants options, product personalisation, product customizer configurator. more Product Customization: Personalize items with a product customizer live preview Sales Boosters: Product add-ons upsell, product preview, option badge & discount Conditional Logic: Show/hide product options based on Shopify or custom variants File upload, Image upload, Checkboxes, Dimensions (custom size price calculator) Text box/ Text input/ Custom field, Date Time picker, Dropdown, Image swatch...
Announce Bar help you to display special offers, discount code, and events in your store. If you want to display Christmas offers to your customers then Announce bar app will help you to display offers on your site. just install the app and configure the app text, size, font, and color according to your requirements. Click on the Save button to publish changes in your store. now your Christmas offer is displayed in your store. * Show your visitors the right message at the right time so they stay in your store longer. * You can display announce bar via country-based on your store. If you want to display Christmas offers to your customers then Announce bar app will help you to display offers on your site. just install the app and configure the app text, size, font, and color according to your requirements. Click on the Save button to publish changes in your store. now your Christmas offer is displayed in your store. * Show your visitors the right message at the right time so they stay in your store longer. * You can display announce bar via country-based on your store. more Display Special offers, Discount Code, Events, Information to your Customers Show the announce bar on selected countries or all countries. Display the bar on selected pages like home, collection, product, or custom page Choose to display the bar per day like Every Time, 1 Time, 2 Time.. etc. Customize the text Announce message, Purchased message, and Success message.
Take unlimited appointments and bookings on your calendar. Booking app for any event or service. Create appointment bookings on Shopify in a few clicks. Booking for events, experiences, tastings, tours and group sessions. In person or online. An integrated Calendly or Acuity for Shopify. Appointment booking app that syncs to orders, customers, and POS. Multi-location scheduling, staff portal, deposits, waitlists, intake questions, QR tickets, email and SMS reminders, and rescheduling. Sync to Google Calendar, Outlook, Zoom, Flow, Klaviyo. Built for showrooms, wineries, jewelry, and more. Create appointment bookings on Shopify in a few clicks. Booking for events, experiences, tastings, tours and group sessions. In person or online. An integrated Calendly or Acuity for Shopify. Appointment booking app that syncs to orders, customers, and POS. Multi-location scheduling, staff portal, deposits, waitlists, intake questions, QR tickets, email and SMS reminders, and rescheduling. Sync to Google Calendar, Outlook, Zoom, Flow, Klaviyo. Built for showrooms, wineries, jewelry, and more. more Take free or paid bookings on any page. Every booking lands in Shopify. Send reminders and follow ups by Email, SMS, Google Calendar and Klaviyo Multi-location: staff, availability, POS, and appointment analytics per location Easy to update schedules, add and check-in bookings. Customers can reschedule. Customizable appointment booking widgets; no code. Helpful chat / email support!
Create unlimited product options! Create unlimited product options. Easily add text and numeric fields, dropdowns, swatches, date selectors, file uploaders and more! Match products using simple or complex criteria. Set any number of conditions to decide whether the options should show on each product. Select between a handful of choices to make your products options show exactly like your business need! Create unlimited product options. Easily add text and numeric fields, dropdowns, swatches, date selectors, file uploaders and more! Match products using simple or complex criteria. Set any number of conditions to decide whether the options should show on each product. Select between a handful of choices to make your products options show exactly like your business need! more Create unlimited product options. Easily add more product options. Match products using simple or complex criteria. Set any number of conditions. Select between a handful of choices to make your products options show as needed
Make your videos and maps responsive so they look good across all devices. Make embedded YouTube, Vimeo videos, and Google Maps fully responsive on any page. The app helps you display videos and maps correctly on Pages, Articles, Products, and more. By default, the app uses a 16:9 aspect ratio for both videos and maps while making them responsive, but if you prefer a different aspect ratio (for example, if you'd like to have square maps), you may adjust dimensions in the app settings easily. Make embedded YouTube, Vimeo videos, and Google Maps fully responsive on any page. The app helps you display videos and maps correctly on Pages, Articles, Products, and more. By default, the app uses a 16:9 aspect ratio for both videos and maps while making them responsive, but if you prefer a different aspect ratio (for example, if you'd like to have square maps), you may adjust dimensions in the app settings easily. more Make your YouTube and Vimeo videos, and Google Maps responsive. Flexible video aspect ratio. Configure embedded videos dimensions. Improved store usability: no more cut off videos or maps on mobile devices
No more returns & lost sales. Make your customers happy with customisable size charts and size guide Stop losing money to returns and refunds. Help your customers choose the right size the first time with smart size charts and fit guides. Set up product size charts in just 3 steps using ready-made templates. Deliver accurate sizing information with a clean, professional size guide – no coding needed. Create size charts that match your brand, display them automatically on all/specific products or collections, and support multiple languages. Fully responsive and optimised for all devices. Stop losing money to returns and refunds. Help your customers choose the right size the first time with smart size charts and fit guides. Set up product size charts in just 3 steps using ready-made templates. Deliver accurate sizing information with a clean, professional size guide – no coding needed. Create size charts that match your brand, display them automatically on all/specific products or collections, and support multiple languages. Fully responsive and optimised for all devices. more Quick setup: 4 prebuilt templates - add branding, change layouts, go live fast Smart display: auto-apply size charts to products, collections, vendors, tags Flexible customisation: change size chart colours & fonts, add videos & images Seamless integration: inline & popup size chart blends perfectly into your theme Fully optimised: mobile-friendly & SEO-ready size chart display
Create dynamic spec tables from fields, variants & metafields. Easy to build, no code. Add professional product specification tables to your store in minutes. No code required. Easy Specs pulls your product fields, variant fields, and metafields into clean, organized tables customers actually read. Specs update instantly as shoppers switch variants, and metafields render correctly by type. Show the right table automatically by collection, tag, type, or vendor, and match your theme with templates, tooltips, and CSS. Give buyers the details they need to add to cart. Add professional product specification tables to your store in minutes. No code required. Easy Specs pulls your product fields, variant fields, and metafields into clean, organized tables customers actually read. Specs update instantly as shoppers switch variants, and metafields render correctly by type. Show the right table automatically by collection, tag, type, or vendor, and match your theme with templates, tooltips, and CSS. Give buyers the details they need to add to cart. more Dynamic data sources: Combine product fields, variants & metafields in one table Smart metafield display: Render every metafield correctly based on its type Real-time variant updates: Values change instantly as shoppers switch variants Smart targeting: Auto-show tables by collection, tag, product type or vendor Match your theme: Style with templates, settings, tooltips & custom CSS
Upsell, cross sell, and use product recommendations to increase your sales. Increase your sales by displaying offers and product recommendations tailored to each customer. Use the power of artificial intelligence exclusively created for Shopify without configuration or technical knowledge. Convert, grow, and retain more customers through automatic product recommendations and upsells. Increase your sales by displaying offers and product recommendations tailored to each customer. Use the power of artificial intelligence exclusively created for Shopify without configuration or technical knowledge. Convert, grow, and retain more customers through automatic product recommendations and upsells. more Increase average order value and make more sales with easy to setup upsells. Convert and retain more customers through automatic product recommendations. Upsell additional products based on your customer's purchase and behavior. Use the power of artificial intelligence exclusively created for Shopify. Showcase additional products and make more sales during Shopify POS sales.
Wholesale order form and page: Bulk order form for the product and standalone wholesale pages. EasyWholesale is a great solution for simplifying bulk orders and speeding up the checkout process for your wholesalers. Add a bulk order form to the Product pages for selected products or standalone wholesale catalog pages with fast order forms for a set of products. Adjust the wholesale page look and feel to make it fit your store theme perfectly and help wholesalers place b2b batch orders quickly and easily. EasyWholesale is a great solution for simplifying bulk orders and speeding up the checkout process for your wholesalers. Add a bulk order form to the Product pages for selected products or standalone wholesale catalog pages with fast order forms for a set of products. Adjust the wholesale page look and feel to make it fit your store theme perfectly and help wholesalers place b2b batch orders quickly and easily. more Create wholesale offer pages for your wholesalers to complete bulk order fast. Add bulk order form to specified products for swift purchasing. Change colors, texts, and quick order form layouts to fit your business needs. Floating bar with order summary for long wholesale catalogs to improve usability Fast checkout for bulk and wholesale orders
Custom product options & variant options: swatches, file upload, price add-ons & product customizer Break Shopify's 100-variant limit with unlimited custom product options & variant options. Customers personalize & customize products with text box, dropdowns, checkboxes, radio buttons, color & image swatches, file upload & date picker. Sell product add-ons with price add-ons, upcharges & multi-currency dynamic pricing to lift AOV. Conditional logic shows/hides options, works with Shopify variants, bulk edit/apply option sets & live preview. Works with Shopify Sidekick & AI assistants via MCP. Break Shopify's 100-variant limit with unlimited custom product options & variant options. Customers personalize & customize products with text box, dropdowns, checkboxes, radio buttons, color & image swatches, file upload & date picker. Sell product add-ons with price add-ons, upcharges & multi-currency dynamic pricing to lift AOV. Conditional logic shows/hides options, works with Shopify variants, bulk edit/apply option sets & live preview. Works with Shopify Sidekick & AI assistants via MCP. more Unlimited variant options & custom product options — no 100-variant limit Product personalizer: text box, dropdowns, file upload, swatches, date picker Conditional logic to show/hide options; works with Shopify variants Product add-ons & price addons with multi-currency upcharges to lift AOV Bulk edit/apply reusable option sets to customize products in minutes
Create 1-Click COD order form with upsells, product bundles, OTP verification, and fraud prevention. EasySell adds a fast, mobile-first order form to your store, built specifically for cash-on-delivery. Your customers complete their order in seconds. Boost cart value with quantity offers, bonus gifts, product bundles, and sequential upsell/downsell flows. Cut fake orders with OTP verification via SMS/WhatsApp and smart blocking rules. Multi-currency by default: build your form with drag and drop, translate it into any language, and connect Google Sheets and your tracking pixels. EasySell adds a fast, mobile-first order form to your store, built specifically for cash-on-delivery. Your customers complete their order in seconds. Boost cart value with quantity offers, bonus gifts, product bundles, and sequential upsell/downsell flows. Cut fake orders with OTP verification via SMS/WhatsApp and smart blocking rules. Multi-currency by default: build your form with drag and drop, translate it into any language, and connect Google Sheets and your tracking pixels. more Fast COD order form that boosts conversions on mobile and desktop Higher order value: upsells, downsells, bundles, and quantity offers Fewer fake orders: OTP via SMS/WhatsApp and smart blocking rules Partial COD deposits to reduce non-delivery risk Translatable into any language, multi-currency, and address autocomplete
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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.