Make your content look like a real book or magazine using all the advantages of HTML5. Create an interactive book with dynamic content, video, maps, products, text, CTA buttons and other dynamic elements on the page. With the app you can create a book from a PDF file, from images, from products in your store or create a book page-by-page. Embed book wherever you want using IFRAME code. The app works on IOS (iPad, iPhone, iPod), Android (Chrome for Android). Create an interactive book with dynamic content, video, maps, products, text, CTA buttons and other dynamic elements on the page. With the app you can create a book from a PDF file, from images, from products in your store or create a book page-by-page. Embed book wherever you want using IFRAME code. The app works on IOS (iPad, iPhone, iPod), Android (Chrome for Android). more Booklet featuring your products including additional dynamic content. Embed your digital catalog anywhere you are able to embed an IFRAME. Use the embedding code as advertising for your products.
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.
Looking for the Top Custom CSS Apps?
We've analyzed thousands of custom css apps to identify the top performers based on ratings and install counts.
View Best Custom CSS Apps
Unlimited product options and variants for customized and personalized products with live preview. Add custom product options and variant options without the 3-option limit: text, dropdown, swatches, file upload, date picker, dimension inputs. Replace existing product variant options with image swatches. Create custom pricing with add-ons, price formulas, and tiered discounts. Preview options live on the product page, and show image uploads and text inputs on the product image. Most themes are supported and we provide excellent theme support and customer support. Add custom product options and variant options without the 3-option limit: text, dropdown, swatches, file upload, date picker, dimension inputs. Replace existing product variant options with image swatches. Create custom pricing with add-ons, price formulas, and tiered discounts. Preview options live on the product page, and show image uploads and text inputs on the product image. Most themes are supported and we provide excellent theme support and customer support. more Create unlimited product options: swatches, file upload, date picker, dimensions Build custom prices with option price add-ons, formulas, and quantity tiers Show/hide product options with conditional logic based on customer inputs Live preview directly on the product image. (Optional) Export original high-resolution preview images (JPG, PNG, SVG, PDF) for print
Benefit from AI-powered suite: Search, Recommender and Shopping Assistant. Boost your sales and CX. Help your customers easily find desired products with Luigi’s Box e-commerce product search and discovery and its advanced features to increase your conversions, sales, and revenue. Personalize your website content to match customers’ intent and achieve better search results relevance while reducing wasteful shopping time. Here you can see the video guide how to install Luigi’s Box on your Shopify store - https://www.youtube.com/watch?v=bXBugw20Qfw Help your customers easily find desired products with Luigi’s Box e-commerce product search and discovery and its advanced features to increase your conversions, sales, and revenue. Personalize your website content to match customers’ intent and achieve better search results relevance while reducing wasteful shopping time. Here you can see the video guide how to install Luigi’s Box on your Shopify store - https://www.youtube.com/watch?v=bXBugw20Qfw more Track customers’ intent and streamline the experience for future visits Speed up their journey to desired products with autocomplete from the first type Avoid searches bringing no results with typo correction and synonyms management Recommend suggestions for most purchased products Provide reliable shopping assistance without chatbots
Add product labels & badges, size charts, GDPR cookie banner, trust badges and more to boost sales Introducing Lavar, your all in one go-to tools to create product labels & badges, size charts, and cookie banners to boost customer trust and shopping confidence. Use dynamic product labels & badges to show discounts, new arrivals, best sellers, and special offers to driving more sales. Add size charts to minimize returns with accurate fit guidance, while cookie banners ensure GDPR compliance and safeguard customer data. Combined, these tools increase engagement & lift conversions without coding Introducing Lavar, your all in one go-to tools to create product labels & badges, size charts, and cookie banners to boost customer trust and shopping confidence. Use dynamic product labels & badges to show discounts, new arrivals, best sellers, and special offers to driving more sales. Add size charts to minimize returns with accurate fit guidance, while cookie banners ensure GDPR compliance and safeguard customer data. Combined, these tools increase engagement & lift conversions without coding more Product Badges: Display sale badges, discount badges and promotional badges Product Labels: Highlight new arrivals, best sellers and featured products Create product labels & badges and size charts that build shopper confidence Trust Badges: Build customer confidence with secure payment and trust icons. Size Charts: Create responsive size charts and size guides for your products
Create 1-Click COD order form to boost sales with Upsells, Offers, Partial Payment & Abandoned Cart Madgic streamlines advanced Cash on Delivery checkouts with a fast, customizable form (including custom Thank-you page) that keeps shoppers engaged and boosts conversions. Offer Partial Payment to collect a deposit first, and the rest on delivery. Protect margins with COD Fee, Autofill, Rules, Abandoned Cart Recovery, Skip-Cart options, export orders to Google Sheets, grow your AOV with Upsells and quantity offers, minimize fake orders with WhatsApp OTP, and track events with Facebook, TikTok,.. Madgic streamlines advanced Cash on Delivery checkouts with a fast, customizable form (including custom Thank-you page) that keeps shoppers engaged and boosts conversions. Offer Partial Payment to collect a deposit first, and the rest on delivery. Protect margins with COD Fee, Autofill, Rules, Abandoned Cart Recovery, Skip-Cart options, export orders to Google Sheets, grow your AOV with Upsells and quantity offers, minimize fake orders with WhatsApp OTP, and track events with Facebook, TikTok,.. more Customize COD checkout form & layout (popup or embedded) with multi-currency Add Quantity Breaks, Offers, Bundles, Downsells, and One-Tick Upsells, COD Fee Partial Payment: Deposit now, pay on delivery & Recover abandoned checkouts. Verify phone numbers by WhatsApp OTP, block IP addresses, and limit postal codes Integrate with Google Sheets export & Facebook Pixel, TikTok Pixel, Releasit
Enhance Sales with a Countdown Timer (Create urgency and inspire quick purchasing decisions) A Sale Timer is your powerful tool to improve sales! By creating urgency, scarcity, and FOMO, it motivates customers to buy now rather than later. Whether for daily use or special occasions like promotions, pre-orders, product launches, flash sales, or holidays, this app is your go-to for driving results. Perfect for Black Friday, Cyber Monday, and beyond, a countdown timer ensures maximum impact. Click ‘Install’ to join successful merchants using this app to generate more revenue! A Sale Timer is your powerful tool to improve sales! By creating urgency, scarcity, and FOMO, it motivates customers to buy now rather than later. Whether for daily use or special occasions like promotions, pre-orders, product launches, flash sales, or holidays, this app is your go-to for driving results. Perfect for Black Friday, Cyber Monday, and beyond, a countdown timer ensures maximum impact. Click ‘Install’ to join successful merchants using this app to generate more revenue! more Drive sales with an announcement bar timer at the top or bottom of your store. Optimize conversions with custom banners or cart countdowns on selective pages. Reduce cart abandonment with a checkout timer to encourage faster purchases. Tailor text, colors, fonts, schedule, & placement to suit your store perfectly. Schedule to-date, daily recurring, or fixed-minute countdowns for your timers.
Add contact, order, and custom forms anywhere in your store without coding Create custom forms in multiple languages with drag-and-drop builder, and smart fields without any coding. Whether you need a simple contact form, a multi-step order form, or advanced file uploads with conditional logic, this app gives you complete flexibility. Integrates easily with tools such as Klaviyo, Mailchimp, Slack, Google Sheets and Zapier. Place forms on product pages, cart pages, the homepage, or any Shopify page to capture customer information where it matters most. Create custom forms in multiple languages with drag-and-drop builder, and smart fields without any coding. Whether you need a simple contact form, a multi-step order form, or advanced file uploads with conditional logic, this app gives you complete flexibility. Integrates easily with tools such as Klaviyo, Mailchimp, Slack, Google Sheets and Zapier. Place forms on product pages, cart pages, the homepage, or any Shopify page to capture customer information where it matters most. more Build forms using a simple drag-and-drop interface to add fields Use conditional logic to show or hide fields dynamically based on user input Create forms in multiple languages to serve international customers View, manage and export submission data submissions from the in-app dashboard Keep your forms secure with Google reCAPTCHA and permission controls
Boost sales with magic cross sell & upsell bundle strategies to increase average order value (AOV). Boost your AOV with Magic Upsell, the smart cross sell & upsell bundles. Show personalized product bundles, FBT suggestions, and AI-driven related items on product pages, cart drawers, and post-purchase. Use one-click upsell add-ons, complementary product popups, and dynamic cart drawer cross-sells. Fully customizable design, no code required, mobile-ready, and seamlessly integrates with your theme. Start boosting sales in minutes with upsell & cross sell bundles. Boost your AOV with Magic Upsell, the smart cross sell & upsell bundles. Show personalized product bundles, FBT suggestions, and AI-driven related items on product pages, cart drawers, and post-purchase. Use one-click upsell add-ons, complementary product popups, and dynamic cart drawer cross-sells. Fully customizable design, no code required, mobile-ready, and seamlessly integrates with your theme. Start boosting sales in minutes with upsell & cross sell bundles. more One-click cross-sell product add-ons. AI-driven product recommendations to boost sales. Fully customizable design that matches your store's branding. No coding skills required - install and start selling more immediately.
Add custom fields, text boxes, date pickers, and file uploads to any product or the checkout. Custom fields, file uploads, and order notes for products + checkout. Add text boxes, dropdowns, checkboxes, date pickers, and uploads to collect order notes Shopify doesn't capture. Let customers add personalization, gift messages, engravings, or artwork. Charge paid add-ons like gift wrap. Display fields by product, variant, or collection. On Shopify Plus, add checkout fields. Export to CSV and see answers in printouts and packing slips. Real human support. Install the app and try it today. Custom fields, file uploads, and order notes for products + checkout. Add text boxes, dropdowns, checkboxes, date pickers, and uploads to collect order notes Shopify doesn't capture. Let customers add personalization, gift messages, engravings, or artwork. Charge paid add-ons like gift wrap. Display fields by product, variant, or collection. On Shopify Plus, add checkout fields. Export to CSV and see answers in printouts and packing slips. Real human support. Install the app and try it today. more Add custom fields like text boxes, dropdowns, date pickers, and file uploads Collect gift messages, engraving, monograms, and artwork before orders ship Charge for paid add-ons like gift wrap, rush processing, and bundled products Show or hide fields by product, variant, or collection using conditional logic See responses in order printouts, packing slips, and emails, or export to CSV
Make your store pop! Add fun, rounded icons and menus with clicks, visits, and views tracked Make it Bubble adds playful, rounded icons for clickable menus and category displays, ideal for visual brands. Track clicks, views, and visits to understand customer engagement. With easy setup, multi-language support, and custom fonts, it brings style to your store. Our analytics dashboard and live chat support help you optimize layouts and boost customer interaction, making it simple to create a unique, interactive storefront experience. Make it Bubble adds playful, rounded icons for clickable menus and category displays, ideal for visual brands. Track clicks, views, and visits to understand customer engagement. With easy setup, multi-language support, and custom fonts, it brings style to your store. Our analytics dashboard and live chat support help you optimize layouts and boost customer interaction, making it simple to create a unique, interactive storefront experience. more Interactive, rounded icon menus for storefronts Real-time click, view, and visit tracking Easy, three-step setup for fast onboarding Multi-language support for global reach Custom fonts and colors for unique branding
ChatGPT powered AI chatbot for AI LiveChat, Quiz, Recommendation and AI shopping assistant. Manifest AI adds a ChatGPT AI chat to your store that answers customer queries, organises a quiz, recommend products, reduce cart drop offs It's an AI shopping assistant provides highly personalised product recommendations, leading to increased orders and revenue, adding chat with us functionality on your website. There are multiple use-cases of Manifest- handling buyer objections, reducing refunds, increasing revenue, increasing AOV, product recommendation. Deploy Rufus like assistant. Manifest AI adds a ChatGPT AI chat to your store that answers customer queries, organises a quiz, recommend products, reduce cart drop offs It's an AI shopping assistant provides highly personalised product recommendations, leading to increased orders and revenue, adding chat with us functionality on your website. There are multiple use-cases of Manifest- handling buyer objections, reducing refunds, increasing revenue, increasing AOV, product recommendation. Deploy Rufus like assistant. more ChatGPT powered AI chatbot to increase sales, AOV and reduces support ticket Enable AI chat bot that provides 24x7 human-like customer support via live chat LiveChat - It enables bet product recommendation, nudges user to purchase Chat with us: AI replies on Live chat in all the languages of the world. AI ecommerce agent to enable AI shopping assistant
Create auto-updating XML, HTML and AI-ready sitemaps in one click. Improve SEO and boost sales! MAPIFY builds XML, HTML, image and video sitemaps and keeps them in sync as your products, collections, pages and blogs change. You choose what each sitemap includes, down to variants and filter pages, and a guided setup helps you submit it to Google Search Console. The AI Control & Search plan adds an editable llms.txt file built from your store data, plus JSON-LD structured data and metadata that help search engines and AI assistants read your products. Includes 24/7 support. MAPIFY builds XML, HTML, image and video sitemaps and keeps them in sync as your products, collections, pages and blogs change. You choose what each sitemap includes, down to variants and filter pages, and a guided setup helps you submit it to Google Search Console. The AI Control & Search plan adds an editable llms.txt file built from your store data, plus JSON-LD structured data and metadata that help search engines and AI assistants read your products. Includes 24/7 support. more Instantly generate XML, HTML, image and video sitemaps that update automatically Choose which products, collections, pages, blogs and variants to include Match the HTML sitemap to your theme and submit it to Google Search Console Publish an llms.txt file from your store data with an editable template Add JSON-LD structured data and metadata for rich results and AI search
Display store, dealer, and stockist locations on an interactive map. No API key required, free plan. Mapstore helps retail stores, franchises, and brands display locations on a searchable, interactive map. Customers find nearby stores, stockists, or dealers with powerful filters, geolocation, and distance search. Add locations individually or bulk import via CSV or Google Sheets. No API keys needed - set up in minutes. Customize map styles, markers, colors, and branding to match your store. Includes analytics to see where customers search, multi-language support, and a developer API. Mapstore helps retail stores, franchises, and brands display locations on a searchable, interactive map. Customers find nearby stores, stockists, or dealers with powerful filters, geolocation, and distance search. Add locations individually or bulk import via CSV or Google Sheets. No API keys needed - set up in minutes. Customize map styles, markers, colors, and branding to match your store. Includes analytics to see where customers search, multi-language support, and a developer API. more No API Key Required - Set up a store locator in minutes, completely free Bulk Import Locations - Upload via CSV or sync with Google Sheets Search, Filter & Geolocation - Customers find nearby stores automatically Fully Customizable - Map styles, markers, branding, custom CSS, and icons Location Analytics - See where customers search and which stores get views
Run personalized offers, upsells, tiered and timed discounts on your cart (Black Friday ready) AI Smart Cart enables merchants to optimise cart completion rates and improve AOV with personalized upsells, offers & discounts. Tailored for Plus merchants looking for advanced cart customisation, and ability to run freebies, tiered promotions, timed discounts, behavioral offers, custom rewards & incentives for improving sales and basket size. Using real-time analytics, it captures and analyzes browse behavior, enabling precise, tailored offers that customers are most likely to purchase. AI Smart Cart enables merchants to optimise cart completion rates and improve AOV with personalized upsells, offers & discounts. Tailored for Plus merchants looking for advanced cart customisation, and ability to run freebies, tiered promotions, timed discounts, behavioral offers, custom rewards & incentives for improving sales and basket size. Using real-time analytics, it captures and analyzes browse behavior, enabling precise, tailored offers that customers are most likely to purchase. more Upsell & Cross Sell : Personalized Offers, Discounts, Upsells & Cross Sells Tiered Offers, Freebies, Coupons, Gifts & Customizable Discounts Realtime analytics, Integrations with Klaviyo and Other Email / SMS tools
Add an AI size recommender and smart size charts to product pages so shoppers buy with confidence. Measmerize asks shoppers a few questions (such as height, weight, and age), builds a 3D Digital Twin of their body, and compares it with your garment measurements, size charts, and product data to recommend a size. Advice starts from product data, so new items get accurate size recommendations at launch with no purchase history. It covers apparel, footwear, and kidswear with product-level size charts and a size guide in 25+ languages, and it follows each Measmerize asks shoppers a few questions (such as height, weight, and age), builds a 3D Digital Twin of their body, and compares it with your garment measurements, size charts, and product data to recommend a size. Advice starts from product data, so new items get accurate size recommendations at launch with no purchase history. It covers apparel, footwear, and kidswear with product-level size charts and a size guide in 25+ languages, and it follows each more Size recommender and fit finder for apparel, footwear, and kidswear Product-level size charts you can create or upload, then assign to products Accurate advice for new products at launch, built from your garment data Preset layouts plus full control of fonts, colors, and button copy Analytics dashboard showing size advice usage and the sales it influences
Mecaparts simplifies auto parts management and ensures vehicle compatibility, boosting your sales. Mecaparts PRO is a next-generation solution for building and managing auto parts stores. It seamlessly integrates with TecDoc, ensuring accurate vehicle-to-part compatibility and a smooth shopping experience. Merchants who hold a TecDoc contract with TecAlliance can import, organize, and publish parts at scale in just a few clicks. Customers benefit from advanced vehicle selectors (Make, Model, Engine), as well as VIN and KBA search, making it effortless to find the correct part every time. Mecaparts PRO is a next-generation solution for building and managing auto parts stores. It seamlessly integrates with TecDoc, ensuring accurate vehicle-to-part compatibility and a smooth shopping experience. Merchants who hold a TecDoc contract with TecAlliance can import, organize, and publish parts at scale in just a few clicks. Customers benefit from advanced vehicle selectors (Make, Model, Engine), as well as VIN and KBA search, making it effortless to find the correct part every time. more Streamline compatibility checks with powerful multiple vehicle selectors. Import, manage, and update thousands of auto parts effortlessly. Access millions of parts, vehicles, and manufacturer data in real time. Easily manage product categories for smooth customer navigation. View images, PDFs, and videos for full product information.
Trigger fear of missing (FOMO) to boost sales. Design & display stunning countdown timer bars. Encourage the customers to buy quickly by creating urgency. The app lets you create stunning countdown timer bars to promote campaigns. Choose from a library of 15+ preset designs or customize your own. You have complete control over the look & feel of the timer bar. Display the timer bar wherever you want—on specific products and for particular device users. Perfect timer app for flash sales, holiday offers, BFCM deals, and more. Encourage the customers to buy quickly by creating urgency. The app lets you create stunning countdown timer bars to promote campaigns. Choose from a library of 15+ preset designs or customize your own. You have complete control over the look & feel of the timer bar. Display the timer bar wherever you want—on specific products and for particular device users. Perfect timer app for flash sales, holiday offers, BFCM deals, and more. more Ready-to-use templates for countdown timer banners for all occasions Transform more customers using an animated action button and sticky bar Customize the countdown timer bar to match the vibe you want to provide Enable the countdown timer for the entire site or specific/discounted products Customers on desktop, mobile or both? Show the timer bar to the proper audience
Take unlimited bookings on your calendar. Booking app for events, services, classes and more. Meety is an appointment booking solution designed to add a customizable scheduling calendar to your products or services. With seamless calendar sync and native integrations (Zoom, Google Meet, Outlook, Teams, Klaviyo, Zapier), Meety supports subscriptions, bundles, multi-booking, deposits, and automated waitlists. Your business can deliver a fully tailored customer experience with multi-language support, custom question forms, personalized email notifications, and a dedicated customer portal. Meety is an appointment booking solution designed to add a customizable scheduling calendar to your products or services. With seamless calendar sync and native integrations (Zoom, Google Meet, Outlook, Teams, Klaviyo, Zapier), Meety supports subscriptions, bundles, multi-booking, deposits, and automated waitlists. Your business can deliver a fully tailored customer experience with multi-language support, custom question forms, personalized email notifications, and a dedicated customer portal. more Add "Schedule your time" button to any page to allow customers to book easily Easy set-up: Timeslots, team member, availability, calendar widget Flexible booking options: Group, Subscription, No-payment, Waitlist, Deposit Automated email notifications, 2-way sync with Google Calendar, Zoom, Outlook Virtual & in-person appointment, customer portal to reschedule or cancel booking
Elevate sales effortlessly: Product Countdown timers for FOMO, urgency, and increased conversions. Create the effect of Urgency, Scarcity, and FOMO in sales by adding a countdown widget, aka deadline time tracker & stopwatch. Display timers strategically as top/bottom bars, on product pages, or collections. Select design presets for quick setup to match your theme and translate text to match your store language. Improve conversion rates and average order value (AOV) of Flash Sales, Seasonal Sales, Daily Deals, Promotions, Holiday Sales, Product Releases, and Launches. Great for Ramadan Sales Create the effect of Urgency, Scarcity, and FOMO in sales by adding a countdown widget, aka deadline time tracker & stopwatch. Display timers strategically as top/bottom bars, on product pages, or collections. Select design presets for quick setup to match your theme and translate text to match your store language. Improve conversion rates and average order value (AOV) of Flash Sales, Seasonal Sales, Daily Deals, Promotions, Holiday Sales, Product Releases, and Launches. Great for Ramadan Sales more Encourage store visitors and motivate buyers to buy now with fear of missing out You can make the sales countdown timer appear for specific products only Use an announcement bar timer (top bar or bottom) for Storewide Sales Add countdowns to many places on your websites to highlight limited-time offers Supports all pages, 1-click setup, no coding required, many converting presets
Story Style Menu to feature products, collections and links in Instagram like icon based navigation Great for shops who want to create social media story like menu to feature products, collections, pages, and links. Circle or square thumbnail navigation menu to redirect customers from collections to specific items. Familiar product menu like Instagram, Facebook, or TikTok stories to reduce bounce rate and improve conversion. Create custom menu items with icons, pictures, gifs, titles, and links that match the design and colors of your website. Place the menu anywhere in the store. Great for shops who want to create social media story like menu to feature products, collections, pages, and links. Circle or square thumbnail navigation menu to redirect customers from collections to specific items. Familiar product menu like Instagram, Facebook, or TikTok stories to reduce bounce rate and improve conversion. Create custom menu items with icons, pictures, gifs, titles, and links that match the design and colors of your website. Place the menu anywhere in the store. more Display menu on mobile and desktop for a seamless browsing experience Allow visitors browse faster, discover new collections, increase conversion rate Full customization of images, titles, colors, fonts, margins, locations etc. Engage visitors with a much better than conventional text-based hamburger menu Seamlessly integrate circle, square story menu bars into your Shopify 2.0 theme
Related Categories
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.