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Custom CSS Shopify Apps

Discover the best Custom CSS apps for your Shopify store in 2026. Compare features, pricing, and reviews to find the perfect solution.

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We've analyzed thousands of custom css apps to identify the top performers based on ratings and install counts.

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Boost AOV with an announcement bar for free delivery with animated shipping bar and goal messages. Motivate shoppers and boost sales with a customizable free shiping bar. Display real-time cart goal progress, create urgency with countdown timers, or spotlight limited-time offers. Choose from top bar, bottom bar, or embed on product pages. Tailor the free shipping cart bar to match your brand’s style. Set up in 2 minutes ultimate free shipping bar - without coding. Whether it’s a free shipping progress bar, flash sale, or product launch timer - capture attention and drive more conversions. Motivate shoppers and boost sales with a customizable free shiping bar. Display real-time cart goal progress, create urgency with countdown timers, or spotlight limited-time offers. Choose from top bar, bottom bar, or embed on product pages. Tailor the free shipping cart bar to match your brand’s style. Set up in 2 minutes ultimate free shipping bar - without coding. Whether it’s a free shipping progress bar, flash sale, or product launch timer - capture attention and drive more conversions. more Use as announcement bar, promo bar, free delivery bar or free shipping widget. Utilize a countdown bar and sales timer for special events to boost sales. Display shipping goal as a header bar, bottom bar or embed on product pages. Free shipping progress bar for real-time goal tracking. Fully responsive on desktop, tablet, and mobile devices.

4.7(Reviews)

GDPR banner to protect privacy, safeguard store & build trust - collect cookie consent in seconds. Create customizable cookie banners, consent bars, and popups to protect user privacy and meet regulations worldwide. Stay GDPR, CCPA, and ePrivacy compliant with tiny cookie widget. Easily match your store’s branding, choose from pre-made templates, and display on any device. Display GDPR legal cookie on all or specific pages. Target customers from different locations like EU, UK, or California - protect your business, build trust, and avoid costly fines with fast, effortless setup. Create customizable cookie banners, consent bars, and popups to protect user privacy and meet regulations worldwide. Stay GDPR, CCPA, and ePrivacy compliant with tiny cookie widget. Easily match your store’s branding, choose from pre-made templates, and display on any device. Display GDPR legal cookie on all or specific pages. Target customers from different locations like EU, UK, or California - protect your business, build trust, and avoid costly fines with fast, effortless setup. more Pre-built cookies popup templates for quick cookie policy setup. Match privacy popup design to your store’s branding & colors. Fully responsive customer privacy banner for desktop & mobile. Display consent cookies banners on all or selected store pages. Install GPDR & go live in minutes, without any technical skills.

5.0(Reviews)

Present your work professionally with a responsive and customizable portfolio photo gallery. Create your perfect portfolio with our easy-to-use photo gallery app. Whether you're building an illustrator portfolio, showcasing a project portfolio, or curating an art portfolio, this is your all-in-one solution. Enjoy an easy portfolio experience with customizable layouts and stunning visuals. From portfolio sammlung to modern galeria styles, our gallery tools make presenting your work effortless and beautiful. Create your perfect portfolio with our easy-to-use photo gallery app. Whether you're building an illustrator portfolio, showcasing a project portfolio, or curating an art portfolio, this is your all-in-one solution. Enjoy an easy portfolio experience with customizable layouts and stunning visuals. From portfolio sammlung to modern galeria styles, our gallery tools make presenting your work effortless and beautiful. more Choose from grid gallery, collage, or list views to showcase your work. Display projects with engaging effects, adding descriptions and links. Customize colors, fonts, CTA buttons, and author details to match your style. Allow visitors to filter galerie projects by category for easy navigation. As zify photo gallery & portfolio, portfolio gallery by powr, elfsight portfolio

5.0(Reviews)

Help customers easily find their true size with detailed size charts and reduce return rate. Size Guides & Size Chart app help your customers to say goodbye to sizing frustrations. Create custom size charts with ease using size selector and AI generator. Designed for shop owners, our app lets you build accurate, true-to-size charts, size finders, size recommendation and fit guides to enhance your customers' shopping experience. Perfect for clothes size chart, shoes size or accessories. Increase your confidence, increase your profits and make sure that size matters! Size Guides & Size Chart app help your customers to say goodbye to sizing frustrations. Create custom size charts with ease using size selector and AI generator. Designed for shop owners, our app lets you build accurate, true-to-size charts, size finders, size recommendation and fit guides to enhance your customers' shopping experience. Perfect for clothes size chart, shoes size or accessories. Increase your confidence, increase your profits and make sure that size matters! more Easily create sized size charts comparison table tailored to your products. Visually showcase true size options in size table for your customers. Add detailed measurement guides to assist customers in finding the right size. Simple, intuitive sizing chart design makes it easy to find the information. Size matters & fit guide widget that works seamlessly on all devices.

5.0(Reviews)

Boost Sales and Ignite Urgency with FOMO Sale Countdown Timer Bar to Increase Conversions! Sales count down timer bar effectively instills a sense of urgency and scarcity in your store. Elevate your customers' FOMO by adding a hurrify countdown timer, pushing them to buy. Create urgency with essential countdown banner or coundown timer, and encourage customers to make a purchase. Maximize your sales during special promotions, flash sales, and seasonal events. Transform your product launches with sales popup countdown time bar or discount timer that build hype and drive early sales. Sales count down timer bar effectively instills a sense of urgency and scarcity in your store. Elevate your customers' FOMO by adding a hurrify countdown timer, pushing them to buy. Create urgency with essential countdown banner or coundown timer, and encourage customers to make a purchase. Maximize your sales during special promotions, flash sales, and seasonal events. Transform your product launches with sales popup countdown time bar or discount timer that build hype and drive early sales. more Countdown timer ultimate tool to highlight limited-time offers with timer cart. Add customizable countdown bars, sales timer to ignite urgency and boost sales. Easily create and customize countdown cart timer to match your brand's style. Set specific triggers & rules when to show the urgency bear without any coding. Track the performance of sale timers & FOMO countdown timer.

5.0(Reviews)

Approve wholesale B2B buyers faster with custom wholesale forms that unlock special pricing. Wholesale Forms is a complete solution for managing B2B and wholesale processes and wholesale inquiry. Build custom multi-step registration forms to collect resale certificates, VAT IDs, or business licenses. Let resellers select preferences like packaging or shipping in the form. Simplify wholesale workflows and create a tailored experience for wholesale customers. Launch your wholesale signup form without coding in under 5 minutes and approve your first B2B customer today! Wholesale Forms is a complete solution for managing B2B and wholesale processes and wholesale inquiry. Build custom multi-step registration forms to collect resale certificates, VAT IDs, or business licenses. Let resellers select preferences like packaging or shipping in the form. Simplify wholesale workflows and create a tailored experience for wholesale customers. Launch your wholesale signup form without coding in under 5 minutes and approve your first B2B customer today! more Build advanced B2B wholesale multi step forms with a drag-and-drop form builder. Embed forms anywhere on your store or trigger them via popup. Ideal for reseller signups, vendor applications, or wholesale club access. Collect VAT IDs, resale certificates, and business licenses to stay compliant. Segment B2B customers based on form responses and approve before granting access

0.0(Reviews)

Effortlessly build custom RSVP forms in minutes and track responses with RSVP Form Builder. RSVP Form Builder is the easiest way to create custom event registration and RSVP forms. Perfect for weddings, conferences, parties, or private sales, it helps you track event sign ups in real time, manage multiple events, and keep everything organized. Customize every field with a simple drag-and-drop editor, match your brand style, and share your form anywhere. Simplify event planning and boost attendance - install today and make event management effortless. RSVP Form Builder is the easiest way to create custom event registration and RSVP forms. Perfect for weddings, conferences, parties, or private sales, it helps you track event sign ups in real time, manage multiple events, and keep everything organized. Customize every field with a simple drag-and-drop editor, match your brand style, and share your form anywhere. Simplify event planning and boost attendance - install today and make event management effortless. more Build custom event registration forms in minutes - no coding needed. Track sign-ups live and manage multiple events effortlessly. Export guest lists to CSV or Excel for easy organization. Fully customize fields, styles, and branding with drag & drop. Add forms anywhere and get real-time response updates instantly.

5.0(Reviews)

Boost conversions and AOV with Kainic, an AI-driven personalization and analytics engine. Kainic continuously tracks real-time shopper behavior, browsing history, and buying patterns to deliver hyper-relevant product recommendations right when your customers are ready to buy. Whether it’s cross-selling on product pages, suggesting smart add-ons in cart drawers, or optimizing checkout offers, Kainic helps turn single-item visits into larger carts. Kainic continuously tracks real-time shopper behavior, browsing history, and buying patterns to deliver hyper-relevant product recommendations right when your customers are ready to buy. Whether it’s cross-selling on product pages, suggesting smart add-ons in cart drawers, or optimizing checkout offers, Kainic helps turn single-item visits into larger carts. more AI product recommendations: personalized bundles based on shopper behavior. Granular tracking: customizable events capture live interactions and intent. Flexible upsells: CSS/HTML-styled offers in cart, checkout, and product pages. Real-time dashboard: track conversion lifts and revenue attribution. Fast, no-code setup: sub-50ms inference with full branding control.

5.0(Reviews)

Show product stock by location, geo-search nearest store for availability, & create location filters A must-have app for merchants using Shopify’s multiple locations or local pickup. Show available and incoming stock by location on product pages, let customers geo-search the nearest store, create smart collections and filters by location, allow store selection, and restrict orders by customer tags. Drive foot traffic, boost sales, and give shoppers full visibility into your inventory across all locations. A must-have app for merchants using Shopify’s multiple locations or local pickup. Show available and incoming stock by location on product pages, let customers geo-search the nearest store, create smart collections and filters by location, allow store selection, and restrict orders by customer tags. Drive foot traffic, boost sales, and give shoppers full visibility into your inventory across all locations. more Display location inventory information on product pages. Create location metafields to build smart collections & filter by availability Access location stock info in liquid using location inventory JSON metafields Let customers choose a specific location to shop from for their orders Restrict locations customers can order from using customer tags - ideal for B2B

5.0(Reviews)

Displays live precious metal prices, ideal for selling fine jewelry, bullions and coins. Keep Up With Metals helps you display real-time precious metal prices directly on your storefront, giving your customers up-to-date information on gold, silver, platinum, and more. Customize the widget to match your store’s style, apply flexible markups, and easily adjust settings. Perfect for stores selling jewelry, bullion, or any metal-based products, this app ensures pricing transparency and improves customer trust, helping drive sales and engagement with minimal setup required. Keep Up With Metals helps you display real-time precious metal prices directly on your storefront, giving your customers up-to-date information on gold, silver, platinum, and more. Customize the widget to match your store’s style, apply flexible markups, and easily adjust settings. Perfect for stores selling jewelry, bullion, or any metal-based products, this app ensures pricing transparency and improves customer trust, helping drive sales and engagement with minimal setup required. more Real-time metal prices for gold, silver, platinum, palladium and more Customizable widget design to match your store’s theme. Flexible markup options: percentage or fixed amount adjustments. Track impressions, clicks, and revenue with built-in analytics dashboard. Seamless integration with Shopify for easy setup and use.

0.0(Reviews)

Create unlimited app options to help merchants increase sales. This app helps you to create infinite product options, which help merchants sell their products and increases sales. Allow shoppers to design their own custom products based on flexible option choices. The function of "option template" can manage options more flexibly. This app is compatible with drawer cart and buy now button. This app helps you to create infinite product options, which help merchants sell their products and increases sales. Allow shoppers to design their own custom products based on flexible option choices. The function of "option template" can manage options more flexibly. This app is compatible with drawer cart and buy now button. more Create unlimited app options to help merchants increase sales. Support ajax cart and "buy it now" Compatible with Online Store 2.0 Themes Flexible and unlimited options template

4.7(Reviews)

Reduce returns and increase sales with clean size charts and AI-powered size recommenders Kiwi helps you remove any sizing uncertainty with customizable size charts and AI-powered fit recommendations that guide shoppers to the right choice. The result? More confident purchases and fewer returns. Add size charts and smart recommendations to any product, from apparel to dog collars. Quick to set up and gives you the flexibility to create a sizing experience that looks professional and fits your brand. Kiwi helps you remove any sizing uncertainty with customizable size charts and AI-powered fit recommendations that guide shoppers to the right choice. The result? More confident purchases and fewer returns. Add size charts and smart recommendations to any product, from apparel to dog collars. Quick to set up and gives you the flexibility to create a sizing experience that looks professional and fits your brand. more Import unlimited size charts from images, product descriptions, or CSV Help customers find their perfect fit with AI-powered size recommendations Add multiple size tables, images, videos, tabs, and more to your size charts Create a product or collection-based size guides that auto-apply to new products Automatically update the sizing unit based on your customer's location

4.7(Reviews)

AI Search & product discovery platform that significantly improves conversion rate and AOV. Perfect for busy merchandising teams, Klevu advanced AI search and recommendations engine helps companies efficiently increase on-site search revenue. Plus, shoppers get personalized product recommendations, and are able to quickly find what they need through our filter and navigation features on product listing pages. Fully compatible with Shopify Markets. With our innovative features, retailers can provide customers with an enjoyable, streamlined shopping experience. Perfect for busy merchandising teams, Klevu advanced AI search and recommendations engine helps companies efficiently increase on-site search revenue. Plus, shoppers get personalized product recommendations, and are able to quickly find what they need through our filter and navigation features on product listing pages. Fully compatible with Shopify Markets. With our innovative features, retailers can provide customers with an enjoyable, streamlined shopping experience. more Advanced AI search and merchandising that learns from your shoppers over time. Easy-to-use merchandising dashboard where you can test and schedule campaigns. Add advanced filtering to product listing pages and manage facets shown. Onsite Search, Merch & Recommendations fully compatible with Shopify Markets. Robust APIs, SDKs and custom storefront documentation, compatible with Hydrogen.

4.9(Reviews)

Add visual menus and product quizzes to guide shoppers to products, collections, and links Add a circle menu bar to your theme section & anywhere in your Shopify 2.0 theme. Create a social media familiar menu to feature products, collections, pages, & links with clean thumbnail navigation. Build collection menus like Instagram stories so shoppers can quickly navigate from collections to specific items. You can also create product quizzes that ask shoppers questions & send them to the right product, collection, or recommendation, helping reduce bounce rate & improve conversion. Add a circle menu bar to your theme section & anywhere in your Shopify 2.0 theme. Create a social media familiar menu to feature products, collections, pages, & links with clean thumbnail navigation. Build collection menus like Instagram stories so shoppers can quickly navigate from collections to specific items. You can also create product quizzes that ask shoppers questions & send them to the right product, collection, or recommendation, helping reduce bounce rate & improve conversion. more Create image-rich menus for collections, products, and any link Show different menu groups by page, collection, product, or campaign Build product quizzes that guide shoppers to the right products Customize circle menu, badges, borders, spacing, layouts, and mobile display Translate menu labels for different storefront languages and markets

4.9(Reviews)

Cart Drawer to Boost AOV: Upsells, Cross-Sell, Rewards, Free Gift & Fast Checkout Kraken Cart helps online stores increase revenue with a fully customizable cart drawer. Display relevant product recommendations with cross-sells, add upsells, and offer tiered rewards such as discounts, free shipping, or free gifts. Enable features including shipping protection, subscriptions, discount codes, gift wrap, order notes, and trust badges. Designed to match your brand and deliver a seamless shopping experience across desktop and mobile devices. Easy setup with no coding required. Kraken Cart helps online stores increase revenue with a fully customizable cart drawer. Display relevant product recommendations with cross-sells, add upsells, and offer tiered rewards such as discounts, free shipping, or free gifts. Enable features including shipping protection, subscriptions, discount codes, gift wrap, order notes, and trust badges. Designed to match your brand and deliver a seamless shopping experience across desktop and mobile devices. Easy setup with no coding required. more Motivate shoppers with in-cart rewards unlocking discounts or gifts. Increase sales with upsells and cross-sells directly in the cart drawer. Offer shipping protection options right within the cart for peace of mind. Enable customers to select subscription plans directly from the cart. Build trust by displaying custom badges directly in the cart interface.

5.0(Reviews)

Drive sales and gather smarter leads with on-brand quizzes built by simply chatting with the AI Get set up fast with a fully personalized, on-brand quiz by simply chatting with your preferred AI via the Lantern MCP. It stays just as easy to manage, update, and review quizzes. Each answer can shape the next question for natural, personalized recommendations in a variety of question types. Capture emails, phone numbers, and zero-party data, track them in Google Analytics, or send them to Klaviyo, Omnisend, Zapier and 20+ more integrations. Choose what converts with A/B testing. Get set up fast with a fully personalized, on-brand quiz by simply chatting with your preferred AI via the Lantern MCP. It stays just as easy to manage, update, and review quizzes. Each answer can shape the next question for natural, personalized recommendations in a variety of question types. Capture emails, phone numbers, and zero-party data, track them in Google Analytics, or send them to Klaviyo, Omnisend, Zapier and 20+ more integrations. Choose what converts with A/B testing. more Use our quiz templates or chat with the AI to build and manage quizzes. Show quizzes in-store, standalone, as a popup, or embedded anywhere. Guide shoppers with logic jumps or skip/show rules and reward them to check out. Sync leads to Shopify customers, Klaviyo, Omnisend, GA, Zapier and 20+ more. Use A/B testing to find what truly converts with data from each tracked session.

4.9(Reviews)

Enable Latitude marketing widgets on your product and cart pages. Drive more sales on your store. Promote your partnership with Latitude (AU) and Gem (NZ) Interest Free payments as a payment option for your customer to choose. Our long term plans starts from 6 months onwards, depending on your agreement with Latitude. Showing your customers that you provide interest free option at checkout encourages your customers to even shop more at your store by giving them more flexibility on payment terms. Promote your partnership with Latitude (AU) and Gem (NZ) Interest Free payments as a payment option for your customer to choose. Our long term plans starts from 6 months onwards, depending on your agreement with Latitude. Showing your customers that you provide interest free option at checkout encourages your customers to even shop more at your store by giving them more flexibility on payment terms. more Easily enable Latitude widget on your product pages Customise Latitude widget layout with visual preview Set minimum amount for price breakdown to show (for selected promotions only)

0.0(Reviews)

Add a coming soon page for your under construction store & notify customers that you’re opening soon Getting your store ready for launch? Turn your under construction store into a professional coming soon page with LaunchX. Add a countdown timer, create pre launch excitement, and let shoppers know you’re launching soon. Get pre-built templates for your under construction store & protect your store with password protection & age verification in under maintenance mode. Give customers a reason to return & use maintenance mode to keep customers engaged while you’re launching soon or opening soon. Getting your store ready for launch? Turn your under construction store into a professional coming soon page with LaunchX. Add a countdown timer, create pre launch excitement, and let shoppers know you’re launching soon. Get pre-built templates for your under construction store & protect your store with password protection & age verification in under maintenance mode. Give customers a reason to return & use maintenance mode to keep customers engaged while you’re launching soon or opening soon. more Choose from pre-built customizable coming soon page templates for pre launch Password-protect your launching soon page with a custom pre-loader icon Build hype on your opening soon page with a countdown timer/launch timer Restrict minor access with age verification on your under construction page Auto-schedule the coming soon page for your under maintenance mode store

4.8(Reviews)

Allows you to quickly create pages through the layouts from the library and change their content. Customers are busy individuals who do not have time to create the sites they desire. LayoutHub was created to make this easier by providing a library of various high-quality layouts. Customers may rapidly select and adjust the layout that meets their needs. Everything is set up and ready to go in a matter of minutes. The layouts are created by seasoned e-commerce professionals, and they will undoubtedly help you improve your conversion rate. Customers are busy individuals who do not have time to create the sites they desire. LayoutHub was created to make this easier by providing a library of various high-quality layouts. Customers may rapidly select and adjust the layout that meets their needs. Everything is set up and ready to go in a matter of minutes. The layouts are created by seasoned e-commerce professionals, and they will undoubtedly help you improve your conversion rate. more Powerful and direct editor, easy to use for anyone. The library of diverse and professional layouts. Dedicated and professional 24/7 customer support. Compatible with popular 3rd apps. The app is designed with outstanding performance in mind.

5.0(Reviews)

Add a store locator to your storefront. Help customers find where your products are sold offline. Easily add a beautiful and feature rich store locator to your storefront website. Increase your sales by helping your customers find where your products are sold offline. The Store Locator app has the perfect balance of powerful features and an easy to use back-end interface at an affordable price. Easily add a beautiful and feature rich store locator to your storefront website. Increase your sales by helping your customers find where your products are sold offline. The Store Locator app has the perfect balance of powerful features and an easy to use back-end interface at an affordable price. more Get setup quickly with instant installation and bulk location importing. Optimized for mobile and fully responsive. Learn where demand is for your product with powerful search analytics. User friendly interface that automatically finds stores closest to a customer.

3.7(Reviews)

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About Custom CSS Apps for Shopify

Custom CSS apps are essential tools for Shopify merchants looking to enhance their store's functionality and improve customer experience. These specialized applications help store owners streamline operations, increase sales, and provide better service to their customers.

When choosing a custom css app for your Shopify store, consider factors such as features, pricing, customer support, and compatibility with your theme and other apps. Reading reviews from other merchants can also provide valuable insights into the app's performance and reliability.

The apps listed on this page represent some of the best custom css solutions available in the Shopify App Store. Each has been selected based on its functionality, user ratings, and overall value for Shopify merchants.