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Custom CSS Shopify Apps

Discover the best custom css apps for your Shopify store. Compare features, pricing, and reviews to find the perfect solution.

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Showcase product variants with multiple images, videos, and 3D models to improve conversions. Variant Gallery lets you display multiple images, videos, or 3D models for each product variant, decluttering your product page, helping merchants find what they need, and increasing conversions. Variant Gallery installs seamlessly without altering your theme and works out of the box—no coding or complex setup needed. Managing variant media is simple and can be done in just a few clicks. Variant Gallery lets you display multiple images, videos, or 3D models for each product variant, decluttering your product page, helping merchants find what they need, and increasing conversions. Variant Gallery installs seamlessly without altering your theme and works out of the box—no coding or complex setup needed. Managing variant media is simple and can be done in just a few clicks. more Display multiple images, videos, or 3D models for each product variant Organize variant media by multiple options such as color, size, or material Manage variant media easily with an intuitive setup Works with popular themes, and we can tailor it for your custom theme

5.0(Reviews)

Easy and fast page builder: build any page type or section that is stunning and highly convert. EComposer Page Builder helps merchants create any page type or section, fast and simply, using a live drag-and-drop editor. Support Landing, Homepage, Collection page, Product, Blog page, Cart page, Footer, Coming Soon Page, 404 page & any theme section. Save tons of time and cost using third-party apps with various built-in extensions to boost sales. No worries about store speed with EComposer speed-up tools and optimized codes. Our 24/7 livechat support is always happy to assist you anytime! EComposer Page Builder helps merchants create any page type or section, fast and simply, using a live drag-and-drop editor. Support Landing, Homepage, Collection page, Product, Blog page, Cart page, Footer, Coming Soon Page, 404 page & any theme section. Save tons of time and cost using third-party apps with various built-in extensions to boost sales. No worries about store speed with EComposer speed-up tools and optimized codes. Our 24/7 livechat support is always happy to assist you anytime! more Build any page & section: landing to home page, collection page, product, etc. Live drag-drop page builder that is easy to use, no coding, Shopify-standard UI Design library: various page layouts, section templates, countless elements Built-in add-ons: Ajax Cart, Color Swatch, Image Optimizer, Cross-selling, etc. Advanced: Page Analytics, Global Blocks, AI Content Generator, Lazy load, etc.

4.9(Reviews)

One Click Upsell & Promoting Discount Code for Online Store Instant Upsell allows you to create discounted upsells automatically in one click. The offers appear as banners that customers can click to apply coupons right away. Encourage your customers to buy more with targeted incentives. When a customer browses a product, the related coupon will pop up. Display your discount offers nicely on all types of screens and devices. Instant Upsell allows you to create discounted upsells automatically in one click. The offers appear as banners that customers can click to apply coupons right away. Encourage your customers to buy more with targeted incentives. When a customer browses a product, the related coupon will pop up. Display your discount offers nicely on all types of screens and devices. more Easy in-store coupon promotion - easy upsell Total control over discounts appearance One-click creation and bulk synchronized Statistic and report impressions and redeem coupons

4.3(Reviews)

Add posts from your Instagram account or by hashtag to your website Installing Instagram Feed app you can choose the best photos from Instagram to fill your site with enticing content, involving more viewers on the website. Accompany photos with call-to-action buttons and turn website visitors into your Instagram followers. Installing Instagram Feed app you can choose the best photos from Instagram to fill your site with enticing content, involving more viewers on the website. Accompany photos with call-to-action buttons and turn website visitors into your Instagram followers. more Various sources to get more exciting content Filters to get full control over the content Full control of sizes and proportions

4.8(Reviews)

Experience 2025’s ultimate cart features—everything you need and more for your cart! Made in Sweden. EliteCart transforms your Shopify cart into a revenue-driving powerhouse. Show tailored upsells, offer market-specific rewards, and automate flows with EliteAI™. Customize for any market with full multi-language, multi-currency support. Sync seamlessly with your theme and use AB testing to optimize performance. Earn more on every order with features like free gifts, discounts, and prioritized upsells—all while providing an effortless experience for desktop and mobile users. EliteCart transforms your Shopify cart into a revenue-driving powerhouse. Show tailored upsells, offer market-specific rewards, and automate flows with EliteAI™. Customize for any market with full multi-language, multi-currency support. Sync seamlessly with your theme and use AB testing to optimize performance. Earn more on every order with features like free gifts, discounts, and prioritized upsells—all while providing an effortless experience for desktop and mobile users. more Smart upsells tailored to collections, products, and shopper preferences. Full design freedom with synced fonts, colors, and custom CSS. Market-specific free-shipping, rewards, and announcement banners. AB testing and EliteAI for flow automation and performance optimization. Maximize earnings with rewards, upsells, and free gift incentives.

5.0(Reviews)

Create any type of contact form, custom forms or multi step order forms for your store easily. EVM Forms - Simple & Easy contact form app with many features, easy customer support and easy user interface too. You can create any type of custom forms with this app like registration form, contact us form, questionnaire form, wholesale form, wholesale order form, an order form, survey form, return form, multi step form, feedback form, Popup form, enquiry form and more. EVM Forms - Simple & Easy contact form app with many features, easy customer support and easy user interface too. You can create any type of custom forms with this app like registration form, contact us form, questionnaire form, wholesale form, wholesale order form, an order form, survey form, return form, multi step form, feedback form, Popup form, enquiry form and more. more Create contact us form, questionnaire form, order forms or any form with captcha Get all form entries in app dashboard to manage it anytime & get it on email too Create form with conditional logic for dynamic forms Drag n Drop interface for easy setup, form builder with file upload option Create multistep forms with EVM Custom Form Builder + Feedback Form, Order Form

4.5(Reviews)

EVM Lookbook app to create beautiful Shoppable Lookbook galleries by tagging products on the images EVM Lookbook allows you to create stunning shoppable image galleries which you can place on any page of your store. You can even add galleries on product detail pages too, which automatically detects the product and shows images specific to that product automatically. EVM Lookbook app is easy to use, you can upload images in bulk as well in one go and simply tag products on images as hotspots. Lookbook helps in showing lifestyle images beautifully on store pages. EVM Lookbook allows you to create stunning shoppable image galleries which you can place on any page of your store. You can even add galleries on product detail pages too, which automatically detects the product and shows images specific to that product automatically. EVM Lookbook app is easy to use, you can upload images in bulk as well in one go and simply tag products on images as hotspots. Lookbook helps in showing lifestyle images beautifully on store pages. more Create Shoppable Loookbooks with hotspots / tags on the images of galleries Make it easy for the buyers to purchase products from Lookbooks Bulk image upload + Collage, Slideshow, Carousel, Masonry & Grid display format Direct Add to cart system from images in Lookbook - Direct Buy System Show product specific galleries generated automatically by Lookbook app

4.9(Reviews)

Image Gallery is an elegant tool to build a photo/video album of your products. You can create Unlimited image or video galleries for your store and give your customers a fantastic experience. Let your customers know all the fine details when they open the image in a full screen pop up. Add titles - You can add titles to each image and even link those titles to any page. Add captions to images. Add Alt tags - SEO friendly images. Now you can add alt tags in images to boost SEO. Protect you images with disable right click. Add call to action links for images. You can create Unlimited image or video galleries for your store and give your customers a fantastic experience. Let your customers know all the fine details when they open the image in a full screen pop up. Add titles - You can add titles to each image and even link those titles to any page. Add captions to images. Add Alt tags - SEO friendly images. Now you can add alt tags in images to boost SEO. Protect you images with disable right click. Add call to action links for images. more Create image or video gallery with or w/o popups. Add links, title & alt tags. Make fully customizable video gallery using your YouTube or Vimeo videos. Create a main/parent layout & link child galleries to the main .

4.8(Reviews)

Safeguard customer data with an all-in-one app that’s compliant with GDPR, CCPA, Law 25, and more. Enzuzo is an intuitive way to keep your eCommerce business compliant with data privacy laws worldwide. We’re a Google-certified consent management platform that adheres to Consent Mode V2. Enzuzo helps you build data subject access requests, privacy policies, cookie consent banners, shipping and return policies, and more to address GDPR, CCPA, and other regulations. We’re best suited for Shopify stores in the U.S., Canada, EEA / EU, UK, Australia, and those shipping globally to these markets. Enzuzo is an intuitive way to keep your eCommerce business compliant with data privacy laws worldwide. We’re a Google-certified consent management platform that adheres to Consent Mode V2. Enzuzo helps you build data subject access requests, privacy policies, cookie consent banners, shipping and return policies, and more to address GDPR, CCPA, and other regulations. We’re best suited for Shopify stores in the U.S., Canada, EEA / EU, UK, Australia, and those shipping globally to these markets. more Advanced consent features: Vary your cookie banner according to visitor region Match your brand identity: Consent manager that’s 100% customizable Custom policies: Generate privacy policies, shipping policies, and more Opt-out requests: Give your customers the option to access or delete data 25+ languages: Talk to your audience in their native language and boost trust

4.5(Reviews)

Product Addons let you boost sales and increase AOV. Display Related Products as addons. Compatible with Online Store 2.0 # New Feature: Apply Discounts on Addon Products. The Product Add-ons app is built to make the process of purchasing multiple products easy and frictionless. Make it easy to purchase and make more money. # Display Related addons on the product page The app allows you to associate multiple products and display the associated products on the product page itself. # Display Related Addons on Cart Page Merchants can easily display add-ons on the cart page as Compatible with Online Store 2.0 # New Feature: Apply Discounts on Addon Products. The Product Add-ons app is built to make the process of purchasing multiple products easy and frictionless. Make it easy to purchase and make more money. # Display Related addons on the product page The app allows you to associate multiple products and display the associated products on the product page itself. # Display Related Addons on Cart Page Merchants can easily display add-ons on the cart page as more Display related products as add-on on the product page and cart page. Apply discounts to the Product Addons Purchase Multiple Products with a Single Click Display Addons as a Group / Section.

4.9(Reviews)

Help customers to compare product & buy the best product from available similar items on your store. Compare product enables customer to make better decision. If your store has such products which can make customers confused to do right purchase, Then this is the app for you. Customers can see comparable products together at same place. You can rearrange / reorder compare product display table rows with drag & drop feature to display product comparison list page more convenient to visitors. Use this feature to differentiate similar products like, Model comparison, style comparison, features Compare product enables customer to make better decision. If your store has such products which can make customers confused to do right purchase, Then this is the app for you. Customers can see comparable products together at same place. You can rearrange / reorder compare product display table rows with drag & drop feature to display product comparison list page more convenient to visitors. Use this feature to differentiate similar products like, Model comparison, style comparison, features more No Code Required, Automated Setup, Lighting Faster & easy compare, comparer tool Color / UI Customization, Advanced Settings, Supports Metafield / Custom fields Reorder list of fields for compare page. Chart on product page,Numeric analytics Variants & Product Comparison, Hide Similarities / Highlight Difference Compatible with Product Filter & Language Translation apps

4.8(Reviews)

Upsell & cross sell. Show frequently bought together product upsell & related products & thank you Boost your Average Order Value (AOV) for your eCommerce store with high-converting upsell, cross-sells, and recommended products. Implement upsell at every stage of the customer journey, from product page upsell to cart drawer upsell and thank you page upsell. Increase sales with smart cross-sell suggestions, personalized recommended products, and one-click upsell to supercharge your checkout flow. Alternative to Reconvert, OCU, SellEasy, EcomRise, Essential Upsell, Upsell Kit, UpCart. Boost your Average Order Value (AOV) for your eCommerce store with high-converting upsell, cross-sells, and recommended products. Implement upsell at every stage of the customer journey, from product page upsell to cart drawer upsell and thank you page upsell. Increase sales with smart cross-sell suggestions, personalized recommended products, and one-click upsell to supercharge your checkout flow. Alternative to Reconvert, OCU, SellEasy, EcomRise, Essential Upsell, Upsell Kit, UpCart. more Maximize order value with custom upsell funnels at every step of the journey. Unlimited upsells with no extra fees to maximize revenue. One-click upsell purchases—no re-entering payment details needed. Automatic discount promotions: Add discounts to upsell & "also bought" products Frequently bought together / Free shipping bar / Thank you page / Cart upsell

5.0(Reviews)

Clearly show product sizes and reduce return rates with size charts and size guides. Make creating size guides quick and easy to help customers buy with confidence, and reduce returns. Make your own guide or start with one of our templates. Add the guide to a product page using product tags or instantly display on all products. Size guides can be easily edited to match your store. Upload images, custom icons and text to enhance your guides. Supports Shopify 2.0 and uses app blocks. If you sell in Shop app, all size charts will also appear alongside associated products in Shop. Make creating size guides quick and easy to help customers buy with confidence, and reduce returns. Make your own guide or start with one of our templates. Add the guide to a product page using product tags or instantly display on all products. Size guides can be easily edited to match your store. Upload images, custom icons and text to enhance your guides. Supports Shopify 2.0 and uses app blocks. If you sell in Shop app, all size charts will also appear alongside associated products in Shop. more Save time by quickly and easily creating size guides for your products. The size guides are customisable to match the look of your store. Make it simple for your customers to find the right size, reducing returns.

4.4(Reviews)

Increase Your Sales with Sale Countdown Timer (when people see a count down timer, they rush to buy) Sale timer is a new secret method to boost your sales! It triggers urgency, scarcity and fomo, driving your customers to Buy NOW, instead of "Buy Later". Wanna sell more? Use this app every day, or use it for specific days (promotion, pre-orders, product launches, flash sale, holidays). Time clock is perfect for the best results during Black Friday, Cyber Monday & beyond. Just click 'Install' and join merchants who use this app to make more money. Sale timer is a new secret method to boost your sales! It triggers urgency, scarcity and fomo, driving your customers to Buy NOW, instead of "Buy Later". Wanna sell more? Use this app every day, or use it for specific days (promotion, pre-orders, product launches, flash sale, holidays). Time clock is perfect for the best results during Black Friday, Cyber Monday & beyond. Just click 'Install' and join merchants who use this app to make more money. more Boost Storewide Sales: By setting an announcement bar timer (top bar or bottom). Increase Conversions: add a product timer, countdown banner or cart countdown. Prevent Cart Abandonment: By using a cart timer (checkout timer) in your cart. Match Counter Style: Customize text, colors, type, timer schedule & placements. Set Any Schedule: To-date, daily recurring, or evergreen fixed-minute countdown.

4.9(Reviews)

Build photo gallery, product gallery, video gallery, portfolio and mixed media (image + video) grids Essential Grid Gallery makes your website look awesome with photo gallery, product gallery, video gallery, image gallery, mixed ( image+video ), collection gallery, portfolio, related blog grid, shoppable video, social media feed gallery. Customized gallery from various sources including social media feed (Facebook, YouTube Gallery, Vimeo, Twitter, Instagram) store uploaded image/video. Customize your gallery with flexible layout and style options to create a grid that fits your store’s design. Essential Grid Gallery makes your website look awesome with photo gallery, product gallery, video gallery, image gallery, mixed ( image+video ), collection gallery, portfolio, related blog grid, shoppable video, social media feed gallery. Customized gallery from various sources including social media feed (Facebook, YouTube Gallery, Vimeo, Twitter, Instagram) store uploaded image/video. Customize your gallery with flexible layout and style options to create a grid that fits your store’s design. more Build photo, product, shoppable video, collection, portfolio, social & blog grid 70+ grid templates and 60+ styles—fully responsive on all screen sizes. Multi-Type Gallery Support – Display images, videos, or mixed in one layout Grid, Masonry, Lightbox, Lazy loading, Hover effect, Animation & much more Upload many photos together, quickly arrange photo position, and save more time.

4.9(Reviews)

18+ Age Verification Popup compliance tool prevents underage visitors from accessing your website Ecom Trend Age Verification Popup Elite app restricts underage visitors entering your Shopify store with a date of birth (DOB) verification. You can set the minimum age limit to access the website like 18+ or 21+ to ensure legal compliance and protection. Customize the popup in line with your store branding and theme. You can prevent underage access on entire website or specific pages. The app is fully responsive and functional on all devices and themes. No coding required. Ecom Trend Age Verification Popup Elite app restricts underage visitors entering your Shopify store with a date of birth (DOB) verification. You can set the minimum age limit to access the website like 18+ or 21+ to ensure legal compliance and protection. Customize the popup in line with your store branding and theme. You can prevent underage access on entire website or specific pages. The app is fully responsive and functional on all devices and themes. No coding required. more Set minimum age requirement with Date of Birth (DOB) Verification. Restrict all pages or specific pages. Use the preset age popup templates or customize with your store branding. Fully functional and responsive on all devices with no coding required. Use the Age Verification Popup app to ensure 18+ legal compliance.

5.0(Reviews)

Floating countdown timer bar designs for sale and other promotional purposes. ET Announcement Timer Banner app can enhance sales conversion effectively by emphasizing the limited time that the shoppers get to grab the deal. The beautiful and customizable bar designs allow you to have the exact timer design that matches your theme. This is an essential component for your store if you are planning to run Flash Sales, Seasonal Sales, Daily Deals, or Special Day Sales like Black Friday. ET Announcement Timer Banner app can enhance sales conversion effectively by emphasizing the limited time that the shoppers get to grab the deal. The beautiful and customizable bar designs allow you to have the exact timer design that matches your theme. This is an essential component for your store if you are planning to run Flash Sales, Seasonal Sales, Daily Deals, or Special Day Sales like Black Friday. more Global countdown timer that is consistent across all devices. Customizable button, timer and texts. Separate design for desktop and mobile view according to your requirement A range of style options

4.8(Reviews)

Cart countdown timer app features urgency cart reserve message that supports cart drawer & cart page Boost your sales exponentially with Cart Countdown Timer app. This app features an urgency cart reserve message with a countdown timer on the cart page which makes the customers to checkout fast. Their engagement with the website will be increased throughout the checkout process as the timer ticks. Use this cart countdown timer app to convert abandon carts into purchases. Many advanced features & styling options are available. A must have urgency timer app for increasing your website sales. Boost your sales exponentially with Cart Countdown Timer app. This app features an urgency cart reserve message with a countdown timer on the cart page which makes the customers to checkout fast. Their engagement with the website will be increased throughout the checkout process as the timer ticks. Use this cart countdown timer app to convert abandon carts into purchases. Many advanced features & styling options are available. A must have urgency timer app for increasing your website sales. more Supports all types of carts (cart pages and side carts) Set up different cart messages for single item carts and multiple item carts Configure action after timer expires (extend timer/ clear cart/ go to homepage) Customize reservation clock time Customize the style based on your preference

4.9(Reviews)

Through upselling on the cart page and cart drawer, Cart Upsell Elite contributes to higher income You can set up an amazing cart experience with Ecom Trend Cart Upsell Elite by creating fully effective and configurable upsell options. You may encourage clients to make larger purchases and save more money by utilizing our app. With our customizable options, you can create designs that complement the style and feel of your website. Cart Upsell Elite allows you to add upselling features to both the cart page and drawer. With Ecom Trend Cart Upsell Elite, you can raise conversions and AOV. You can set up an amazing cart experience with Ecom Trend Cart Upsell Elite by creating fully effective and configurable upsell options. You may encourage clients to make larger purchases and save more money by utilizing our app. With our customizable options, you can create designs that complement the style and feel of your website. Cart Upsell Elite allows you to add upselling features to both the cart page and drawer. With Ecom Trend Cart Upsell Elite, you can raise conversions and AOV. more Add upselling blocks to both the cart page and drawer Boosts AOV Highly Customizable Simple setup Unlimited upsell rules

0.0(Reviews)

Get Compliant, Add a Cookie notice to your Shop. The "Europe Cookie Notice" App lets you add a notice to your store that informs your customers that your Store uses cookies. All Shopify Stores use cookies for statistics, basic functionality or even trackers and according to European laws, websites must inform their customers that they are using cookies. Our app helps you fulfill this by allowing you to add a cookie notice bar for European customers (or all customers if you wish). The "Europe Cookie Notice" App lets you add a notice to your store that informs your customers that your Store uses cookies. All Shopify Stores use cookies for statistics, basic functionality or even trackers and according to European laws, websites must inform their customers that they are using cookies. Our app helps you fulfill this by allowing you to add a cookie notice bar for European customers (or all customers if you wish). more Get compliant with the "European Cookie Law". Easily and fully customize the notice bar. Option to show notice to European customers only.

0.0(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.