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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 customizable 360-degree product spinners to your store! 360 Omnium Spinner is an interactive way to show every detail of your product. Increase conversion rate by showing all sides of your products and making customers confident from the very first interaction. 360 Omnium Spinner is an interactive way to show every detail of your product. Increase conversion rate by showing all sides of your products and making customers confident from the very first interaction. more Quick Installation in just a few easy steps. Easy image upload with Drag & Drop. Multiple configurable options (themes, spin modes, etc.) Custom UI styling support with CSS.

5.0(Reviews)

Guide your shoppers to the right products with our foolproof search and customizable filters Say goodbye to frustrating keyword searches leading to irrelevant results. Our semantic engine understands the intent behind every search so your customers always find what they need - even if it's broad and descriptive like "leather boots no laces". With customizable filters and a powerful analytics dashboard, this isn't just any search app - it's your sales assistant! Boost products, add synonyms, turn on autosuggestions, and optimize your listings for a seamless shopping experience. Say goodbye to frustrating keyword searches leading to irrelevant results. Our semantic engine understands the intent behind every search so your customers always find what they need - even if it's broad and descriptive like "leather boots no laces". With customizable filters and a powerful analytics dashboard, this isn't just any search app - it's your sales assistant! Boost products, add synonyms, turn on autosuggestions, and optimize your listings for a seamless shopping experience. more Typo-tolerant search with autocomplete that understands searcher intent Advanced, enriched product filters for better navigation and product discovery Full analytics suite and automated optimization to boost conversion rates Fully customizable design to make the search fit your unique needs Powerful, intuitive result management tools to promote your best products

3.7(Reviews)

Custom products, personalizer, customizer, infinite options, FREE 3D & AR, product page builder. Allow customers to see the real-time changes of the 3D model as they select the product style of their interest, and to view and experience the product in real life through augmented reality (AR). Paas3D product customizer is one of the most powerful ways to achieve "what you see is what you get" and it will bring an immersive shopping experience to your customers. Our experienced 3D modeling team is always online to help you build 3D digital assets with fast delivery and reasonable prices. Allow customers to see the real-time changes of the 3D model as they select the product style of their interest, and to view and experience the product in real life through augmented reality (AR). Paas3D product customizer is one of the most powerful ways to achieve "what you see is what you get" and it will bring an immersive shopping experience to your customers. Our experienced 3D modeling team is always online to help you build 3D digital assets with fast delivery and reasonable prices. more Create 3D customization with infinite options and variants (color/texture/part). Augmented Reality (AR) products modeling and virtual Try-on. Custom products, POD on 3D models, text engraving, and image upload. Fully editable (text, images, theme style) customizer to fit your store theme. Quick access to 5 to 30 seconds of product auto-rotation videos or links.

2.9(Reviews)

Create custom registration forms, order, contact, donation forms & feedback form with add-on fields. Build custom forms to collect customer feedback, registration, survey responses, or product inquiries. Our Form Builder app offers easy drag-and-drop tools for creating multi-step forms, surveys, registration forms, & more. Customize fields, designs, and triggers, then seamlessly integrate with email and CRM systems. Let your customers upload a file or an image when they submit your form. Creating forms is easy with the Powerful Form Builder app, featuring conditional login and show/hide fields. Build custom forms to collect customer feedback, registration, survey responses, or product inquiries. Our Form Builder app offers easy drag-and-drop tools for creating multi-step forms, surveys, registration forms, & more. Customize fields, designs, and triggers, then seamlessly integrate with email and CRM systems. Let your customers upload a file or an image when they submit your form. Creating forms is easy with the Powerful Form Builder app, featuring conditional login and show/hide fields. more Drag-and-Drop Form Builder: Quickly create forms with the drag-and-drop feature. Customizable Fields & Design: Customize form fields, colors, and styles to match Conditional login Forms: Show/Hide Form fields dynamically based on responses. Email & CRM Integration: Connect forms to email lists or a CRM like AiTrillion. Automated Responses & Alerts: Set up instant email replies and notifications.

4.8(Reviews)

# 3 in 1 APP - Product Options Field, Testimonial Form, and Pop-Up Builder It is a must have app for any Shopify store owner who wants an easy-to-use, effective, and inexpensive tool to add this important feature. Product Option Field Features. It is a must have app for any Shopify store owner who wants an easy-to-use, effective, and inexpensive tool to add this important feature. Product Option Field Features. more Create an unlimited number of additional Product fields. Customers can fill in the fields on the Product detail page. Display the fields on the front end and receive the order.

3.8(Reviews)

Turn customer questions into confident purchases. Add a powerful Q&A section to your product pages, allowing shoppers to ask questions and get answers instantly. Reduce hesitation, build trust and help customers make faster buying decisions with real-time interaction. Add a powerful Q&A section to your product pages, allowing shoppers to ask questions and get answers instantly. Reduce hesitation, build trust and help customers make faster buying decisions with real-time interaction. more Allow customers to ask questions directly on product pages AI-powered answers for faster and smarter responses Admin control to review, manage and publish Q&A Smart FAQ system with categories and tagging Multi-language support with easy customization

5.0(Reviews)

Display a form on your store in a few easy steps. Supports file uploads. Create a form, display it on your store and configure what happens when a customer submits it (e.g. send an email, update a Google Sheet, create a customer/metafield in Shopify etc.). With no coding skills required, you don't have much to lose trying this app! Create a form, display it on your store and configure what happens when a customer submits it (e.g. send an email, update a Google Sheet, create a customer/metafield in Shopify etc.). With no coding skills required, you don't have much to lose trying this app! more Display a form on your store (on a page, product page or cart page). Unlimited number of forms and submissions. Flexible behavior on submission: email, Google Sheets, Shopify integrations etc.

5.0(Reviews)

100+ popup templates to grow store revenue with email capture and upsell. Why choose ActionPop? Most popup apps stop at email capture. ActionPop turns popups into a revenue tool. Welcome new visitors with first-purchase discounts, recommend complementary products after add-to-cart, show cross-sell offers before checkout, and recover abandoning shoppers with exit-intent popups. Target campaigns by products, cart contents, customer properties, and more. Remove "Powered by OnVoard" branding for free when you subscribe to OnVoard's Email Marketing app. Why choose ActionPop? Most popup apps stop at email capture. ActionPop turns popups into a revenue tool. Welcome new visitors with first-purchase discounts, recommend complementary products after add-to-cart, show cross-sell offers before checkout, and recover abandoning shoppers with exit-intent popups. Target campaigns by products, cart contents, customer properties, and more. Remove "Powered by OnVoard" branding for free when you subscribe to OnVoard's Email Marketing app. more 100+ popup templates. Powerful editor to fully customize pop-ups. Upsell Trigger: Add Cart, Initiate Checkout, Exit Intent etc. Spin Wheel, Scratch Card, Pick a Gift, Capture Email, Exit Popup, Discount Pop Filter by contact properties. For example, display discount codes for VIPs. Filter by Shopify store properties. For example, popup if cart amount < $100.

5.0(Reviews)

Accessibility Widget, Audits & Fix Assistance.Support WCAG, AODA, EAA & ADA Compliance Standards. AI-enhanced accessibility solution for Shopify.Add a customizable accessibility widget with no code changes required. Help customers browse and shop comfortably with 35+ accessibility controls, including screen reader support, text-to-speech, automated alt text, Low Vision, Dyslexia, userway, Seizure Safe, accessibe, equal web, Accessibly resizing and keyboard navigation. Support alignment with consentmo, pandectes, BFSG, EAA, Section 508, AODA, EN 301 549, ADA Compliance USA & UK accessibility AI-enhanced accessibility solution for Shopify.Add a customizable accessibility widget with no code changes required. Help customers browse and shop comfortably with 35+ accessibility controls, including screen reader support, text-to-speech, automated alt text, Low Vision, Dyslexia, userway, Seizure Safe, accessibe, equal web, Accessibly resizing and keyboard navigation. Support alignment with consentmo, pandectes, BFSG, EAA, Section 508, AODA, EN 301 549, ADA Compliance USA & UK accessibility more Automated ARIA Validation & Repair, A11y WCAG 2.2 Level AA, ADA, AODA, EAA Flexible accessibility settings, tested and compatible with all Shopify themes AI generates alt text for product images at once for WCAG & ADA compliance Contrast, Keyboard navigation, screen reader support, and proper ARIA attributes Compatible with Judge.me, Loox, SEOWill, Kaching Bundles & Appstle Subscriptions

4.6(Reviews)

Add a Shoppable Social Feed to Your Store Social Feed by Tagembed turns Instagram into a powerful sales channel. Auto-import posts, reels, stories, mentions & hashtags etc and display them in sliders, grids, reels or story layouts. Make content shoppable, auto-cache media for fast loading, and boost conversions with dynamic, trust-building feeds — all without slowing your Shopify store. Social Feed by Tagembed turns Instagram into a powerful sales channel. Auto-import posts, reels, stories, mentions & hashtags etc and display them in sliders, grids, reels or story layouts. Make content shoppable, auto-cache media for fast loading, and boost conversions with dynamic, trust-building feeds — all without slowing your Shopify store. more Super simple to setup & no coding knowledge required for this Instagram Feed app Real time update - drive fresh content with auto-updating Instagram posts Explore 20+ Instagram feed themes from slider, grid, masonry, story theme etc AI-powered tagging & moderation – auto-filter irrelevant content Make Instagram UGC posts shoppable – tag products directly in images

5.0(Reviews)

Cart Animator will add Interactive animations on ATC, Buy Now buttons. Increase CTR & CR. When on the product page, Cart Animator guides the user to focus on the main thing in the site i.e the Add to Cart Button. It will add Interactive animations on ATC, Buy Now buttons like shake, tada, bounce etc. We totally focus on providing the user an interactive guide so that user can reach the ATC button & can be focused easily on the product page. The app installation process is extremely easy and it does not require any manual code. Contact us for any help needed with the installation. When on the product page, Cart Animator guides the user to focus on the main thing in the site i.e the Add to Cart Button. It will add Interactive animations on ATC, Buy Now buttons like shake, tada, bounce etc. We totally focus on providing the user an interactive guide so that user can reach the ATC button & can be focused easily on the product page. The app installation process is extremely easy and it does not require any manual code. Contact us for any help needed with the installation. more One Click Install. Compatible with Online Store 2.0. Multiple shaking animations for add to cart, Buy Now and Checkout buttons. You can customize the look and style of your "Add to Cart" button. Inject animation on any class or ID. Add to Cart Analytics. Boost sales conversions with highlighted animated buttons.

4.0(Reviews)

Upsell with AI Offers, bundle discounts, cross-sells, quantity breaks, volume discounts Boost your AOV and Sales by offering bundle discounts, cross-sells, quantity breaks, volume discounts, and AI bundles. Our product bundles encourage purchases, volume discounts offer greater discounts for different quantities, and AI offers give reasonable recommendations based on the product purchase history. With our intuitive user interface, live preview of your offers before publishing, you will have a strong tool to optimize your discount strategies and increase your average order value. Boost your AOV and Sales by offering bundle discounts, cross-sells, quantity breaks, volume discounts, and AI bundles. Our product bundles encourage purchases, volume discounts offer greater discounts for different quantities, and AI offers give reasonable recommendations based on the product purchase history. With our intuitive user interface, live preview of your offers before publishing, you will have a strong tool to optimize your discount strategies and increase your average order value. more Frequently Bought Together or a beautiful upsell slider with variety of layouts. Volume discounts, can be targeted to specific variants only to get rid of stock. Product addons, mix & match offers, with complicated discount functionality. Translatable, supports all currencies, full design mods to match brand identity. Accurate analytics, showing you the best performing offers and general overview.

4.9(Reviews)

If they see it, they buy it. Add-ons on product pages and at checkout (Plus). Free plan. A controlled product recommendation tool to increase your AOV by pairing the best-fit products together, reducing customers' search efforts for matching products. Works like a mix-and-match-style bundle on the product page. The variant selection on the widget gives flexibility to choose from multiple options/variants. The checkout page Addons widget helps with cross-selling. Check out the widget conversion analytics in the app for any A/B testing you would like to do with matching products. A controlled product recommendation tool to increase your AOV by pairing the best-fit products together, reducing customers' search efforts for matching products. Works like a mix-and-match-style bundle on the product page. The variant selection on the widget gives flexibility to choose from multiple options/variants. The checkout page Addons widget helps with cross-selling. Check out the widget conversion analytics in the app for any A/B testing you would like to do with matching products. more Multi variant selection addons with add to cart in one click Works on Product page & Checkout page In App Widget Conversion analytics for A/B Testing of matching products Controlled add-ons that makes relevance more human touched Build you pack styled selectable addons

5.0(Reviews)

Pre-orders and Buy Now Ship Later with held orders and combined shipping. Addora offers stores three paths: Pre-orders, Ship Later, or both in one app. Addora is the only app where customers can choose Ship Later at checkout and pick exactly when their combined orders ship - a planned option, not a post-purchase fix. Split mixed carts so in-stock items ship now while pre-orders wait, or opt to hold the whole order until everything's ready - your choice. One dashboard for dates, held orders, and exceptions. Addora offers stores three paths: Pre-orders, Ship Later, or both in one app. Addora is the only app where customers can choose Ship Later at checkout and pick exactly when their combined orders ship - a planned option, not a post-purchase fix. Split mixed carts so in-stock items ship now while pre-orders wait, or opt to hold the whole order until everything's ready - your choice. One dashboard for dates, held orders, and exceptions. more Stop killing sales caused by shipping fees. Hold Box & Build a Box: vinyl, comics, TCG, k-pop merch, stationery, etc. Let shoppers stack Black Friday Cyber Monday orders and ship once. Conditions for discounts, free shipping, international shipping, base fees. Split mixed carts: ship in-stock items now, auto-release the rest later.

5.0(Reviews)

Boost conversion & reduce returns with size chart, badges, labels, popups & variant descriptions Turn your product page into a high-converting sales machine. ADV helps you increase conversion and reduce returns with powerful tools like size chart, badges, labels, popups & variant descriptions. Many stores lose sales because customers lack information or trust. ADV solves this by helping you highlight key product details, guide buying decisions, and create a more professional shopping experience — without coding. Turn your product page into a high-converting sales machine. ADV helps you increase conversion and reduce returns with powerful tools like size chart, badges, labels, popups & variant descriptions. Many stores lose sales because customers lack information or trust. ADV solves this by helping you highlight key product details, guide buying decisions, and create a more professional shopping experience — without coding. more Reduce returns using size charts, size guide, help customers pick the right size Increase sales with product badges, labels & trust icons Boost conversion with sales popups, urgency & promotion Improve product pages with variant descriptions & specifications Improve shopping experience to turn visitors into buyers

5.0(Reviews)

Create a unique lookbook and sell more to your customers using dedicated "shop the look" section Advanced Shop the look app is designed for people who want to showcase multiple products through a single section and add additional value to their customers. You can make a full or half-width section and place hotspots connected to your products. The design part can be customized in the app. Provide additional upsell products to customers who want to purchase the look of your choice. Advanced Shop the look app is designed for people who want to showcase multiple products through a single section and add additional value to their customers. You can make a full or half-width section and place hotspots connected to your products. The design part can be customized in the app. Provide additional upsell products to customers who want to purchase the look of your choice. more Build multiple lookbooks and customize their appearance Create different hotspots on the images Select layout options that match your brand and design 24/7 chat/email/phone support

4.1(Reviews)

Let customers edit orders & addresses after checkout. Cut support tickets and cancellations.
 Self-serve order editing app for Shopify stores. Customers can edit orders after checkout, edit addresses, swap products, change variants, apply discounts, and cancel orders with smart retention rules. Draft orders for B2B, branded tax invoices, and store credit refunds. Plus returns, exchanges, and support tickets. Address edits auto-recalculate shipping, discounts, and tax. Reduce support tickets, RTO and raise AOV with post-purchase upsell, Shopify Flow automation, and 3PL integration. Self-serve order editing app for Shopify stores. Customers can edit orders after checkout, edit addresses, swap products, change variants, apply discounts, and cancel orders with smart retention rules. Draft orders for B2B, branded tax invoices, and store credit refunds. Plus returns, exchanges, and support tickets. Address edits auto-recalculate shipping, discounts, and tax. Reduce support tickets, RTO and raise AOV with post-purchase upsell, Shopify Flow automation, and 3PL integration. more Edit order: Edit address, items, variants, quantity, shipping, swap/add products Google address validation, auto tax, shipping & discount recalculation on edits Cancel, return or exchange: retention, restocking fees, store credit & refunds Post-purchase upsell & cross-sell on order status page, thank-you page & emails Editing windows, Shopify Flow, 3PL/ERP/OMS integration, support tickets & alerts

5.0(Reviews)

Age verification for secure site access. Simple compliance for your store. Easily verify customer ages before they access your site with our customizable age verification popup. Tailor the design and messaging to match your brand, ensuring compliance without sacrificing user experience. Quick to set up and fully customizable, our app helps you meet legal requirements while maintaining a smooth shopping experience. Enhance your store’s security and protect your business with this essential tool. Easily verify customer ages before they access your site with our customizable age verification popup. Tailor the design and messaging to match your brand, ensuring compliance without sacrificing user experience. Quick to set up and fully customizable, our app helps you meet legal requirements while maintaining a smooth shopping experience. Enhance your store’s security and protect your business with this essential tool. more Customizable age verification popup to match your brand. Simple setup and integration with your store. Flexible age limit settings for different regions. Option to require birthdate or age confirmation. Mobile-friendly design for seamless user experience.

0.0(Reviews)

Protect age-restricted products with an age verification popup. Verify visitors by age gate or DOB. AgeX lets merchants add a customizable age verification popup to age-restricted stores. Show an age gate before visitors enter, verify age with birthday input, set minimum age by country, and restrict specific products, pages, or the whole store. Use branded templates, custom text, colors, fonts, and multiple languages for alcohol, vape, CBD, tobacco, cannabis, and adult product stores. Remember verified visitors with cookies for a smoother 18+ or 21+ age check experience. AgeX lets merchants add a customizable age verification popup to age-restricted stores. Show an age gate before visitors enter, verify age with birthday input, set minimum age by country, and restrict specific products, pages, or the whole store. Use branded templates, custom text, colors, fonts, and multiple languages for alcohol, vape, CBD, tobacco, cannabis, and adult product stores. Remember verified visitors with cookies for a smoother 18+ or 21+ age check experience. more Add an age verification popup, age gate, or 18+ check to your store Verify visitors with birthday input, Yes/No buttons, or age checkbox Set country-based minimum age rules for different markets Restrict selected products, collections, pages, or the whole store Customize templates, text, colors, fonts, logos, and languages

4.8(Reviews)

Agree Terms is a simple checkbox makes your customers aware of your company policies before purchase Need extra confirmation or bring customers attention to your policy before they make a purchase? Our Agree To Terms app is exactly what you need. Whether it be for Terms & Conditions, Age Verification or All Sales Final Confirmation, this app will ensure that your customer accepts the terms of your choice in order to proceed to checkout. Customize your Agree Terms and Conditions to suit your store needs. Add a redirect link or text as per your requirements. Need extra confirmation or bring customers attention to your policy before they make a purchase? Our Agree To Terms app is exactly what you need. Whether it be for Terms & Conditions, Age Verification or All Sales Final Confirmation, this app will ensure that your customer accepts the terms of your choice in order to proceed to checkout. Customize your Agree Terms and Conditions to suit your store needs. Add a redirect link or text as per your requirements. more Checkbox on cart page to address your Terms and Conditions ( T&C ) We have one click install for your cart page. Works with Buy now button. It works with Google pay, Paypal on checkout page

4.9(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.