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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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Add different nav menus to different pages or based on customer tag. Hide menu on designated pages. Create unique, targeted navigation menus for logged-in users or specific pages. Display specific header navigation menu to VIP customers, wholesale buyers, first-time purchasers, or any targeted segment. Remove nav menu from your header for specific pages completely and create highly effective landing pages without custom-coding or additional apps. Create unique, targeted navigation menus for logged-in users or specific pages. Display specific header navigation menu to VIP customers, wholesale buyers, first-time purchasers, or any targeted segment. Remove nav menu from your header for specific pages completely and create highly effective landing pages without custom-coding or additional apps. more Add different header menus to different pages Show different header menus to different customers based on customer tag Simplify navigation & increase loyalty. Remove header with menu and icons from any page

0.0(Reviews)

Create forms with our form builder, enhancing your website's functionality and user experience! E-commerce merchants understand that information is power, and our form builder gives you exactly that. It offers an easy way to create engaging, customizable forms for your customers. This could be anything from detailed customer surveys to simple contact forms. The data you collect helps you make informed business decisions and tailors your offerings to suit your customer's needs. Optimize your business operations, improve user interaction, and make data-driven decisions with Nerdy Form! E-commerce merchants understand that information is power, and our form builder gives you exactly that. It offers an easy way to create engaging, customizable forms for your customers. This could be anything from detailed customer surveys to simple contact forms. The data you collect helps you make informed business decisions and tailors your offerings to suit your customer's needs. Optimize your business operations, improve user interaction, and make data-driven decisions with Nerdy Form! more Customize email notifications and auto responder email when a form is submitted. Easy to create multistep forms. Forms in pop-up and forms with conditional logic Upload files and attach them to notification email. A great variety of fields: datepicker, range slider, image select and more Numerous styling customizations to exactly match your shop's aesthetic.

4.9(Reviews)

Build branded email sign-up forms and grow your audience effortlessly with GetResponse Forms GetResponse Forms is an ideal solution for merchants aiming to grow their email list and enhance customer engagement with targeted email campaigns. This app effortlessly integrates with GetResponse, streamlining lead collection so you can easily manage subscribers and run impactful marketing campaigns. With fully customizable, mobile-friendly forms and advanced targeting features, it enables you to connect with the right customers at the right moment, boosting conversions and increasing sales. GetResponse Forms is an ideal solution for merchants aiming to grow their email list and enhance customer engagement with targeted email campaigns. This app effortlessly integrates with GetResponse, streamlining lead collection so you can easily manage subscribers and run impactful marketing campaigns. With fully customizable, mobile-friendly forms and advanced targeting features, it enables you to connect with the right customers at the right moment, boosting conversions and increasing sales. more Create personalized forms and pop-ups that match your store’s design. Start growing your email list in minutes with an intuitive setup process. Automatically connect and sync email subscribers with your GetResponse account. Ensure your forms are optimized for all devices.

5.0(Reviews)

A fully customizable and translatable cookie bar that ensures GDPR/CCPA compliance Ninja Cookie Bar GDPR offers a one-click solution for GDPR/CCPA (and more) cookie compliance. With Ninja Cookie Bar, you can display a professional cookie consent banner that appears for every new visitor and stays visible until they provide informed consent. Customize the banner to match your branding strategy and ensure compliance effortlessly. Ninja Cookie Bar GDPR offers a one-click solution for GDPR/CCPA (and more) cookie compliance. With Ninja Cookie Bar, you can display a professional cookie consent banner that appears for every new visitor and stays visible until they provide informed consent. Customize the banner to match your branding strategy and ensure compliance effortlessly. more One-click GDPR/CCPA cookie bar setup with user preferences and rejection options Include links from the banner to the full cookie policy and terms & conditions Fully customize the cookie bar's translations, colors, preferences, and blocks.

0.0(Reviews)

Effortlessly create stunning lookbooks & image galleries to captivate your audiences and drive sales Nitro Lookbooks allows merchants to create shoppable image galleries that drive more sales and enhance brand professionalism. You can pin many items to your lookbook including products, images, texts, and links which drive customers to explore more about your products. Also, lookbooks can be added at any position, on any page of your website. With various stunning layouts & design options, you can freely customize the lookbook as you want. Live chat support is always happy to assist. Nitro Lookbooks allows merchants to create shoppable image galleries that drive more sales and enhance brand professionalism. You can pin many items to your lookbook including products, images, texts, and links which drive customers to explore more about your products. Also, lookbooks can be added at any position, on any page of your website. With various stunning layouts & design options, you can freely customize the lookbook as you want. Live chat support is always happy to assist. more Create shoppable lookbooks allowing you to pin products, images & links easily Various stunning & modern layouts to showcase lookbook Freely customize how lookbooks & galleries display on your store Customize presets for lookbook elements: hotspot (pins), tooltips & buttons Showcase lookbooks & galleries at any position on any page

5.0(Reviews)

Effortlessly enhance your store with Instant Buy & Ajax Add to Cart - the ultimate shopping This app allows you to optimize your store for a smooth shopping experience. With Instant Buy, customers can purchase products with just one click, eliminating the need for lengthy checkout processes. The app also incorporates Ajax Add to Cart, allowing customers to add products to their cart without having to leave the collection/search page. Recommended Products popup will be shown after added to Cart. The floating Sticky Cart will either open app's built-in Cart Drawer or Go to the Cart page. This app allows you to optimize your store for a smooth shopping experience. With Instant Buy, customers can purchase products with just one click, eliminating the need for lengthy checkout processes. The app also incorporates Ajax Add to Cart, allowing customers to add products to their cart without having to leave the collection/search page. Recommended Products popup will be shown after added to Cart. The floating Sticky Cart will either open app's built-in Cart Drawer or Go to the Cart page. more Instant checkout with one-click purchase Ajax add-to-cart without page reloads Shows recommended products after added to cart Sticky Add to cart on Product page Sticky Cart button easily opens app's built-in Cart Drawer or go to Cart page

3.7(Reviews)

Intelligent Commerce Experience Platform helping brands increase online engagement and revenue We help online brands transform the commerce experience by enriching and connecting customer, product, and content data so they can deliver personalized experiences at scale. This is done through our AI-powered Commerce Experience Platform made up of intuitively designed tools that increase online revenue through end-to-end commerce experience management. Nosto makes every online commerce experience authentic and relevant so consumers have loveable experiences with their favorite brands. We help online brands transform the commerce experience by enriching and connecting customer, product, and content data so they can deliver personalized experiences at scale. This is done through our AI-powered Commerce Experience Platform made up of intuitively designed tools that increase online revenue through end-to-end commerce experience management. Nosto makes every online commerce experience authentic and relevant so consumers have loveable experiences with their favorite brands. more Site Search. Powerful, personalized, AI search to boost product discovery Personalization. Make the experience unique for every single shopper every time Merchandising. Total control over product rankings within all discovery pillars Content. Personalized content and authentic UGC to increase conversions Business Intelligence. Dive deep on the things that make your shoppers tick

4.8(Reviews)

Engage with customers everywhere: Facebook Messenger, Telegram, & 20+ chat channels & Contact Form. With one-click integration with Omega: Facebook Messenger Chat & Contact Form, you can keep conversions persistent across your Shopify stores through Facebook chat, chat popup, and 20+ platforms like SMS, Email, Viber, Phone, WeChat, Skype, Line, TikTok, Telegram, Facebook and Instagram, etc. Omega Facebook Messenger Chat help increase sales conversions, generate leads, and improve customer support with one live chat button With one-click integration with Omega: Facebook Messenger Chat & Contact Form, you can keep conversions persistent across your Shopify stores through Facebook chat, chat popup, and 20+ platforms like SMS, Email, Viber, Phone, WeChat, Skype, Line, TikTok, Telegram, Facebook and Instagram, etc. Omega Facebook Messenger Chat help increase sales conversions, generate leads, and improve customer support with one live chat button more Build your customer support with Messenger chat, Teleram, and Instagram,... All-in-one chat button lets customers chat with you via their preferred chat app Customize chat widget's style, device & page target, and preset welcome messages Analyze the effectiveness of chat channels: Messenger & contact form Messenger welcome message box helps increase customer engagement

4.9(Reviews)

Easy set up WhatsApp, Instagram, other social media, chat, and your favorite images in your shop! This app easily adds a WhatsApp button to your shop. In addition to WhatsApp, it comes with preset icons for social media platforms like Instagram, TikTok, X, Messenger, Telegram, and LINE. You can also upload your favorite images, allowing you to set buttons for phone, email, chat, concierge, and more. You can freely set the destination link for the buttons as well. How you use it is up to you! This app easily adds a WhatsApp button to your shop. In addition to WhatsApp, it comes with preset icons for social media platforms like Instagram, TikTok, X, Messenger, Telegram, and LINE. You can also upload your favorite images, allowing you to set buttons for phone, email, chat, concierge, and more. You can freely set the destination link for the buttons as well. How you use it is up to you! more You can easily install a WhatsApp button in your shop. You can also install SNS buttons other than WhatsApp. You can upload your favorite image and set a link. You can freely set the installation location. Select which markets to display when multiple markets are available.

0.0(Reviews)

Boost Sales with AI Quizzes & Funnels That Guide Shoppers, Personalize Products, & Drive Conversions Octane AI helps DTC brands turn shoppers into converted sales with AI-powered quizzes & smart funnels. Collect zero-party data, build rich customer profiles, & deliver personalized product recommendations automatically. Give your shoppers a guided experience by recommending the right product at the right moment, while reducing returns. Uncover opportunities & trends; optimize conversions with built-in A/B testing & performance tracking. Works seamlessly with Klaviyo, Postscript, Attentive, etc. Octane AI helps DTC brands turn shoppers into converted sales with AI-powered quizzes & smart funnels. Collect zero-party data, build rich customer profiles, & deliver personalized product recommendations automatically. Give your shoppers a guided experience by recommending the right product at the right moment, while reducing returns. Uncover opportunities & trends; optimize conversions with built-in A/B testing & performance tracking. Works seamlessly with Klaviyo, Postscript, Attentive, etc. more Quiz: Product recommendations using personalized quizzes automatically with AI Shopping Assistant: Show quizzes in a popup to move from discovery to purchase Smart Products: Tell AI what you want & get immediate product recommendations Smart Copy: Add text prompts to quiz results to recommend personalized products Image Analyzer: Customers upload photos for AI analysis for shade matching, etc.

4.8(Reviews)

Boost sales by showcasing the Best Sellers on your Homepage using an image Slider / Carousel Best sellers generate most of your revenue—make them impossible to miss. OctoSlide helps you automatically promote top products on your homepage or collections through customizable sliders and carousels. Choose compact or enlarged product sliders, enable lazy load for faster PageSpeed, and add zoom-on-hover. Fully supports Online Store 2.0, collection sliders, and homepage product carousels, helping you boost sales and showcase products beautifully with responsive image sliders. Best sellers generate most of your revenue—make them impossible to miss. OctoSlide helps you automatically promote top products on your homepage or collections through customizable sliders and carousels. Choose compact or enlarged product sliders, enable lazy load for faster PageSpeed, and add zoom-on-hover. Fully supports Online Store 2.0, collection sliders, and homepage product carousels, helping you boost sales and showcase products beautifully with responsive image sliders. more Add a one-click Add to Cart button on any product slider to boost conversions Increase engagement with customizable carousels, sliders, and image slideshows Match your brand look by styling product sliders and carousels to fit your theme Track sales performance from each slider / carousel with the built-in analytics Ensure a smooth experience with fully mobile-optimized product sliders

4.3(Reviews)

Discover the ease and flexibility of our customizable and user-friendly store branch locator. Simplify your store branch location with our user-friendly store branch locator app. Push in-store sales, reduce support queries, and effectively showcase your stores, retailers, and dealers. Gain valuable insights into customer preferences with advanced analytics. Optimize your strategy with data-driven decisions. Try our store locator today. Simplify your store branch location with our user-friendly store branch locator app. Push in-store sales, reduce support queries, and effectively showcase your stores, retailers, and dealers. Gain valuable insights into customer preferences with advanced analytics. Optimize your strategy with data-driven decisions. Try our store locator today. more No need for an API key – easy installation without external services or expenses Choose from various map styles and utilize custom markers to categorize Add unlimited number of locations and display store details with review section Add anywhere in your page - home, collection or any page using theme block You can enable widgets or App Embed with customizable option

5.0(Reviews)

Allow shoppers to create custom pricing quotes real-time and self-checkout! This app allows you to generate pricing on the fly! Create unlimited variants (avoid Shopify's variant limit), unlimited options, custom pricing calculations, quotes, bundles, subscriptions, selling plans, and more without having to create a custom app! It is designed to be developer friendly with no rigid templates. Use your own HTML, CSS, and JavaScript formula. Customize it however you wish! This app allows you to generate pricing on the fly! Create unlimited variants (avoid Shopify's variant limit), unlimited options, custom pricing calculations, quotes, bundles, subscriptions, selling plans, and more without having to create a custom app! It is designed to be developer friendly with no rigid templates. Use your own HTML, CSS, and JavaScript formula. Customize it however you wish! more Allows unlimited questions / prices / variants / options Increase sales with real-time quotes and shopper self-checkout Run your own code without having to build an app Developer friendly - built for devs

0.0(Reviews)

Provide search suggestions as you type. One can also enable search results and collection filters. This app boosts search & discovery with instant suggestions as you type, helping customers find products, blogs, pages & collections quickly. Product filters: Refine results on search results page & collection pages using smart filters. Data analysis: Gain valuable search data insights. Easy installation: Seamlessly integrate with your store. This app boosts search & discovery with instant suggestions as you type, helping customers find products, blogs, pages & collections quickly. Product filters: Refine results on search results page & collection pages using smart filters. Data analysis: Gain valuable search data insights. Easy installation: Seamlessly integrate with your store. more LiveSearch suggestions with unlimited products, collections, pages & blogs Smart search bar Search results page and collection page filter menu. Complete search and click pattern analysis. The app works for all languages.

4.9(Reviews)

Make your shop comply with the EU Omnibus Directive. Our app ensures full compliance with the European Omnibus Directive by displaying the lowest price of the past 30 days for each product variant. We monitor and record price changes, keeping the lowest price always updated. The product page widget is fully customizable in terms of color, spacing, and formatting, offering advanced display settings, including the ability to hide it by vendor and tag. You can reach us via chat or email for assistance. Our app ensures full compliance with the European Omnibus Directive by displaying the lowest price of the past 30 days for each product variant. We monitor and record price changes, keeping the lowest price always updated. The product page widget is fully customizable in terms of color, spacing, and formatting, offering advanced display settings, including the ability to hide it by vendor and tag. You can reach us via chat or email for assistance. more Complies with Omnibus: Track the lowest price over 30 days or custom timeframe. Customizable Widget: Edit colors, adjust spacing, position and translate texts. Display initial price, hide widget based on product price, vendors or tags. Support through live chat and email for any request.

5.0(Reviews)

Google Maps store locator with up to 2,000 locations per map! Add a flexible store locator to your Shopify store with Omnium Maps. Place maps on any page, use them with any Shopify theme, and manage physical locations such as stores, showrooms, service points, franchises, retail partners, and stockists. Developers and Shopify Partners get extra tools for advanced customization and map placement. Add a flexible store locator to your Shopify store with Omnium Maps. Place maps on any page, use them with any Shopify theme, and manage physical locations such as stores, showrooms, service points, franchises, retail partners, and stockists. Developers and Shopify Partners get extra tools for advanced customization and map placement. more Google Maps integration with automatic, CSS selector, or Liquid code placement. Unlimited maps, one per page, with up to 2,000 locations each. Search by text, address, ZIP code, or customer geolocation. CSV import and export with automatic geocoding for bulk location updates. Customize maps with themes, layouts, and custom CSS.

5.0(Reviews)

Instantly boost Google SEO & get indexed faster with a 1-click branded HTML sitemap and XML sitemap! Improve SEO visibility by generating a clean, branded HTML sitemap for your store the moment you install. Set it up in under 1 minute and manage everything inside Shopify Admin—no code required. The sitemap updates automatically as your catalog changes, and you get simple guidance to improve indexing. Auto-create your sitemap page & add it to your footer in one click. Compatible with all themes, optimized for speed. Questions? Chat with our friendly & fast customer support. Improve SEO visibility by generating a clean, branded HTML sitemap for your store the moment you install. Set it up in under 1 minute and manage everything inside Shopify Admin—no code required. The sitemap updates automatically as your catalog changes, and you get simple guidance to improve indexing. Auto-create your sitemap page & add it to your footer in one click. Compatible with all themes, optimized for speed. Questions? Chat with our friendly & fast customer support. more Create an HTML sitemap that lists products, collections, and pages instantly. Auto‑update the sitemap as you add or remove items — no maintenance. Customize colors, typography, and layout on your sitemap to match your brand. Add your HTML sitemap link to the footer menu automatically — no theme edits. Follow the built‑in step‑by‑step guide to submit your XML sitemap to Google.

5.0(Reviews)

Ongoing Upsells instantly adds a Buy Now button to the top of product pages helping to boost sales Ongoing Upsells helps you capture more sales with a sticky 'Add to Cart' bar that stays visible as shoppers scroll. This powerful upsell tool keeps key actions front and center, guiding customers smoothly toward checkout. It’s designed to boost conversions, reduce cart abandonment, and increase engagement on every product page. Easy to install, fully customizable, and built for speed—Ongoing Upsells makes it easier for shoppers to act, so you can turn more traffic into revenue. Ongoing Upsells helps you capture more sales with a sticky 'Add to Cart' bar that stays visible as shoppers scroll. This powerful upsell tool keeps key actions front and center, guiding customers smoothly toward checkout. It’s designed to boost conversions, reduce cart abandonment, and increase engagement on every product page. Easy to install, fully customizable, and built for speed—Ongoing Upsells makes it easier for shoppers to act, so you can turn more traffic into revenue. more Always Visible Add to Cart: Make it easy for customers to buy anytime, anywhere Customizable Design: Match your store's look with full control over colors/ look Fast Checkout: Get customers to checkout quicker and reduce cart abandonment

5.0(Reviews)

Use progress bar to boost average order value (AOV). What is AOV Progress Bar? When it comes to increasing your store's average order value (AOV), there's no better tool to use than AOV Progress Bar. AOV Progress Bar is an interactive progress bar that changes whenever customers add or remove items from cart. This motivates customers to subconsciously add more items to their cart in order to qualify for discounts. What is AOV Progress Bar? When it comes to increasing your store's average order value (AOV), there's no better tool to use than AOV Progress Bar. AOV Progress Bar is an interactive progress bar that changes whenever customers add or remove items from cart. This motivates customers to subconsciously add more items to their cart in order to qualify for discounts. more Rich text editor for call-to-action Customizable progress bar. Change style based on your store design. Inline widget that doesn't clutter your page. Multi-tiers discounting. No powered by message.

4.1(Reviews)

EU Hosted. Next Generation Product Recommendations with Upsell. Why choose OnVoard Product Recommender? Our app don't just display product recommendations. We make product recommendations more compelling by adding social proofs like "25% of customers bought this together" to convince customers WHY they should add product to cart. This is our app differentiation VS other product recommendations app. For GDPR, data are hosted in EU. Why choose OnVoard Product Recommender? Our app don't just display product recommendations. We make product recommendations more compelling by adding social proofs like "25% of customers bought this together" to convince customers WHY they should add product to cart. This is our app differentiation VS other product recommendations app. For GDPR, data are hosted in EU. more Style Editor: Customize product recommendations based on your store design Meta Labels: Use social proofs to enhance product recommendations Filtering: Use filters to exclude products based on rating, quantity, tags etc. Revenue Tracking: Identify assisted revenue generated recommendations Analytics: View analytics to identify top-performing recommendations

5.0(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.