Show sticky add to cart buttons on your product pages. This increases sales and reduces abandonment. Allow your customers to quickly add to cart and buy your products. Lengthy product info can make add to cart buttons hard to find. However, a sticky add to cart is always highly visible. So your customers can buy now, add to cart and checkout faster. Our one click install saves time by adding a sticky add to cart that seamlessly integrates into your store. Use our built in reporting to easily see your sales increases and use with your Google Analytics and Facebook Pixel. Allow your customers to quickly add to cart and buy your products. Lengthy product info can make add to cart buttons hard to find. However, a sticky add to cart is always highly visible. So your customers can buy now, add to cart and checkout faster. Our one click install saves time by adding a sticky add to cart that seamlessly integrates into your store. Use our built in reporting to easily see your sales increases and use with your Google Analytics and Facebook Pixel. more Automatically match your store theme with high converting styles. Use our button Animator to attract more attention and 'move' the button. Display at the top or bottom and customize text. Visible and responsive to your customers on mobile, desktop & tablet. Unlimited impressions and clicks included.
Custom CSS Shopify Apps
Discover the best custom css apps for your Shopify store. Compare features, pricing, and reviews to find the perfect solution.
Looking for the Top Custom CSS Apps?
We've analyzed thousands of custom css apps to identify the top performers based on ratings and install counts.
View Best Custom CSS Apps
Automatically price your customers' multiple uploaded files, images with various conditions. With Upload Center, you can effortlessly offer custom products like personalized phone cases, t-shirts with unique designs, engraved jewelry, custom printed guitar picks, or DTF gang sheet. Our seamless file upload fields make it effortless for customers to bring their ideas to life, while our powerful features streamline your workflow and improves customer satisfaction. With Upload Center, you can effortlessly offer custom products like personalized phone cases, t-shirts with unique designs, engraved jewelry, custom printed guitar picks, or DTF gang sheet. Our seamless file upload fields make it effortless for customers to bring their ideas to life, while our powerful features streamline your workflow and improves customer satisfaction. more Fully customizable multiple upload fields with different conditions. Automatic price calculation based on height or inch square. (PNG & PDF support) Ability to upload multiple files and set the quantity per file. Restore uploaded files even if the product page is closed. Automatically rename the file according to a specified rule.e.g #1002_john_a.png
Allow file uploads with orders and enable customers to edit images and create personalized products. Upload-Lift allows customers to upload files on Product, Contact, Cart and Order Status pages. It's easy to set up and does not require any theme modifications. You can configure the allowed file types, and the app includes an image editor to let customers crop images in your desired format. Upload-Lift allows customers to upload files on Product, Contact, Cart and Order Status pages. It's easy to set up and does not require any theme modifications. You can configure the allowed file types, and the app includes an image editor to let customers crop images in your desired format. more Fast upload of any file type up to 5GB in size. Image editor that allows cropping with predefined ratios and crop shapes. Preview of the uploaded image on the upload field and cart page. File Validations. Configure min/max file size and image dimensions. File conversion of advanced file formats e.g (PDF/Ai) into images.
Create stunning filterable galleries where customers can upload photos and engage with content Turn customer content into sales! Create a shoppable customer image gallery, photo competition, photo gallery, video gallery, slider gallery and product gallery. Drive sales by allowing customers to tag multiple products per post. Allow customers to comment on posts. Customers can filter the gallery by products and custom fields to find exactly what they're looking for! Provide discounts and rewards to entice customers to upload. Automatic AI content moderation to save time and much more! Turn customer content into sales! Create a shoppable customer image gallery, photo competition, photo gallery, video gallery, slider gallery and product gallery. Drive sales by allowing customers to tag multiple products per post. Allow customers to comment on posts. Customers can filter the gallery by products and custom fields to find exactly what they're looking for! Provide discounts and rewards to entice customers to upload. Automatic AI content moderation to save time and much more! more Customer Uploads: Customers upload photos, videos and tag your products Incentivise Content: Offer discounts to customers in exchange for content Photo Competition: Create a photo competition to incentivise customers Product Gallery: Create a per product gallery that shows content automatically Revenue Analytics: Track gallery sales, top products, and customer engagement
Encourage purchases and keep shoppers engaged with urgency tools designed to enhance the buying. Convert more sales automatically. Offer upsell, cross-sell, and post-purchase to your customers to increase conversion. Boost sales with Saleupscale! Create urgency in your Shopify store with dynamic countdown timers, inventory alerts, and discount promotions. Perfect for flash sales, limited-time offers, and low-stock highlights. Enhance your Thank You page with add-ons and drive quicker purchasing decisions. Convert more sales automatically. Offer upsell, cross-sell, and post-purchase to your customers to increase conversion. Boost sales with Saleupscale! Create urgency in your Shopify store with dynamic countdown timers, inventory alerts, and discount promotions. Perfect for flash sales, limited-time offers, and low-stock highlights. Enhance your Thank You page with add-ons and drive quicker purchasing decisions. more Create a sense of urgency with dynamic countdown timers for promotions. Display real-time inventory to let shoppers know when stock is running low. Cross sell related products using the thank you page upsell. Extra discount Pop-up on time based promotion.
One click upsell & cross sell for AOV+. Bundle frequently bought together & related product addons. Selleasy displays high conversion pre purchase & post purchase upsell offers. This prompts customers to bundle related products / accessories, and increases your AOV. Upsell & cross sell offers can be created manually or using automatic product recommendations. Selleasy also supports multi-language and multi-currency Shopify stores. Most of our widgets are embedded & unobtrusive. Choose the style of upsell that suits your store. We also offer free setup assistance on Zoom / chat / email. Selleasy displays high conversion pre purchase & post purchase upsell offers. This prompts customers to bundle related products / accessories, and increases your AOV. Upsell & cross sell offers can be created manually or using automatic product recommendations. Selleasy also supports multi-language and multi-currency Shopify stores. Most of our widgets are embedded & unobtrusive. Choose the style of upsell that suits your store. We also offer free setup assistance on Zoom / chat / email. more Show Amazon-style "frequently bought together" product upsell bundles. Cross sell product addons on the product page. Embed as list / grid / etc. Pop-up a cart upsell funnel or addons based on items in the cart. Display a post purchase upsell page with one click upsell (checkout upsell). Cross sell related products using the thank you page upsell.
All In One Upsell app is designed to Boost Sales & AOV & encourage customers to buy more. The Essentialwolf Upsell & Cross Sell app is increase sales & AOV & user friendly with full customization tools for any business looking to increase their sales and AOV. Create highly targeted, personalized upsell funnels tailored to your customers’ preferences and spending habits—driving higher conversions and bigger sales. Plus, with real-time insights into customer behavior, you can easily track spending patterns and build even more effective upsell funnels. The Essentialwolf Upsell & Cross Sell app is increase sales & AOV & user friendly with full customization tools for any business looking to increase their sales and AOV. Create highly targeted, personalized upsell funnels tailored to your customers’ preferences and spending habits—driving higher conversions and bigger sales. Plus, with real-time insights into customer behavior, you can easily track spending patterns and build even more effective upsell funnels. more Display on product, cart, post-purchase, checkout and thanks you page. Support AI & Manual mode to personalized Upsell Funnel. Suggest related products to customers to increase the likelihood of a sale. Choose different types of layout and easy to customizable. In depth data analytics, track customer history, unlimited settings & many more.
Supercharge AOV and Revenue with Pre and Post Purchase One-Click Upsells. Inspire your customers to add related products/accessories across Product page, Cart and Thank you pages, and increase units per transaction. No additional percentage of your upsell revenue as subscription cost, every upsell dollar is yours! On Shopify Plus? You can supercharge your Checkout page with upsells and progress bar. Watch incremental revenue grow with our real-time analytics and fine tune your offers by A/B testing across customer journey. Inspire your customers to add related products/accessories across Product page, Cart and Thank you pages, and increase units per transaction. No additional percentage of your upsell revenue as subscription cost, every upsell dollar is yours! On Shopify Plus? You can supercharge your Checkout page with upsells and progress bar. Watch incremental revenue grow with our real-time analytics and fine tune your offers by A/B testing across customer journey. more Create Post Purchase One-Click Upsells (single & multi-product) Upsell everywhere: Product page, Cart, Thank You page Supercharge Checkout page with upsells and more (Shopify Plus Exclusive) Customize Thank You & Order Status page: Upsells, Surveys & more Customizable Slide Cart, seamless branding driving high conversion rates
Sell more via upsell popups, upgrade pop ups, and cross sell + post purchase offers to add to order! Increase order value with upsell & cross-sell offers & funnels. Reach customers when adding a product to cart, on cart page via popup offers or after order with post purchase offers. Offer customizable discounts, percentage, amount off, & free gifts! Offer related, frequently bought with, & complementary products using Shopify AI to tailor recommendations to your customers. Pop up offer to increase revenue by encouraging customers to buy more, with volume discounts and post purchase funnel. Increase order value with upsell & cross-sell offers & funnels. Reach customers when adding a product to cart, on cart page via popup offers or after order with post purchase offers. Offer customizable discounts, percentage, amount off, & free gifts! Offer related, frequently bought with, & complementary products using Shopify AI to tailor recommendations to your customers. Pop up offer to increase revenue by encouraging customers to buy more, with volume discounts and post purchase funnel. more Upsell Popups & cross-sell pop ups - offer complementary and/or related products Post Purchase offer - add items to order with one click after purchase is paid Custom discounts - percentage off, amount off, and free gift offer popup Product page & cart page popups - popup when adding to cart, or before checkout Upgrade popups - pop up prompt customers to replace an item with a better one
Upsell Popup lets you improve revenue & Average order value Boost sales with Upsell Popup, the ultimate add to cart & checkout triggered popup app. Showcase frequently bought together products and boost cross-sells with timely, customisable popups for higher Average order value. Features include smart popup triggers, display frequency control, and mobile-friendly design to enhance your store’s shopping experience. Easy to set up and no coding required. Turn every cart into a bigger sales opportunity by increasing AOV. Boost sales with Upsell Popup, the ultimate add to cart & checkout triggered popup app. Showcase frequently bought together products and boost cross-sells with timely, customisable popups for higher Average order value. Features include smart popup triggers, display frequency control, and mobile-friendly design to enhance your store’s shopping experience. Easy to set up and no coding required. Turn every cart into a bigger sales opportunity by increasing AOV. more Add to Cart & Checkout Triggers – Instantly show popups on CTA click AI Recommendations - Suggest relevant products with AI to boost conversions Custom Discounts - Add discounts in popups to increase sales effectively Multi-language - Expand your reach and boost conversions with localised popups Fast & Optimized - Keep your store fast with a lightweight, efficient design
Upsell effectively using AI: Automate in-cart upsells, checkout upsells & bundles to boost sales. Upsell Wizard transforms your sales with AI-driven upselling and cross-selling. Master in-cart upselling, checkout upsells, and post-purchase offers with ease. Boost your average order value through strategic upsell funnels, offering discounted upsells and 'buy x get y' deals. Enjoy hassle-free setup as Upsell Wizard's AI automates compelling product suggestions and upsell opportunities. Perfect for smooth, intelligent upselling. Questions? Our US-based support team is here to help. Upsell Wizard transforms your sales with AI-driven upselling and cross-selling. Master in-cart upselling, checkout upsells, and post-purchase offers with ease. Boost your average order value through strategic upsell funnels, offering discounted upsells and 'buy x get y' deals. Enjoy hassle-free setup as Upsell Wizard's AI automates compelling product suggestions and upsell opportunities. Perfect for smooth, intelligent upselling. Questions? Our US-based support team is here to help. more Upsell and cross sell related products, different variants, and bundles. Trigger upsell offers with specific variants, products, tags or collections. Supports "buy X get Y" discounts and free products. Translate everything your customers see into the language of your choosing. Built to work with Shopify's native discount system & new post-purchase flows.
This Black Friday,maximize sales by offering personalized items tailored to your customers behaviour Upselly is the ultimate upsell and addon items app for Shopify stores. With targeted upsell suggestions on the product page, you can increase your sales and revenue effortlessly. Upselly helps you create personalized offers based on customer behavior and purchase history, with both manual and automatic suggestions. Track upsell performance with analytics and reporting features to make data-driven decisions for your sales strategy. Get up and running with intuitive user interface in no time. Upselly is the ultimate upsell and addon items app for Shopify stores. With targeted upsell suggestions on the product page, you can increase your sales and revenue effortlessly. Upselly helps you create personalized offers based on customer behavior and purchase history, with both manual and automatic suggestions. Track upsell performance with analytics and reporting features to make data-driven decisions for your sales strategy. Get up and running with intuitive user interface in no time. more Automatically match the color of selected recommended product to your theme Display price and discounted price on the product page with recommended products Manual recommendations: fine-tune manually the recommendations for each product
Highly designed Image Slider can be displayed in the store! This application allows you to display a highly designed Image Slider in your store with no coding required; you can customize the speed at which the Image Slider flows, the number of pieces, the appearance of the arrows, and the type of animation. Bring a highly customizable Image Slider to your store. This application allows you to display a highly designed Image Slider in your store with no coding required; you can customize the speed at which the Image Slider flows, the number of pieces, the appearance of the arrows, and the type of animation. Bring a highly customizable Image Slider to your store. more Image Slider can be installed in your store. Customize the animation, speed, and design of the Image Slider. Separate images can be set for PCs and mobile.
The All-In-One Countdown Timer & Sale Urgency App. Increase Conversion and Maximize Sales Save time and money with a single app. Includes 10+ urgency tools/features to help unlock your full sales potential. Setup is quick, easy and fully customizable. Save time and money with a single app. Includes 10+ urgency tools/features to help unlock your full sales potential. Setup is quick, easy and fully customizable. more Countdown Timers: Create urgency on store pages and at cart or checkout. Spin the Wheel: Boost engagement, reduce site abandonment, and reward customers. Social-Proof Alerts: Show recent orders and remaining stock as customers browse. Stock Counter: Create FOMO with Quantity Bars on Product Pages. Urgency Emails: Send Sale Alerts/Reminders + Add a Countdown Timer to any email.
Fast responsive slide cart and cart upsell with free shipping bar and free gift to boost AOV and CR V1 Slide Cart & Cart Upsell is a full featured solution to improve the customer experience in the checkout to boost AOV and conversion rate. The sticky cart drawer works with your theme with minimal impact on performance. Implement a cart discount functionality and calculate shipping costs (include them in the totals) and show delivery times. Define maximum order quantity for cart items. Show a free shipping bar and free gifts. Include cart upsells and gift wrap to reduce cart abandonment. V1 Slide Cart & Cart Upsell is a full featured solution to improve the customer experience in the checkout to boost AOV and conversion rate. The sticky cart drawer works with your theme with minimal impact on performance. Implement a cart discount functionality and calculate shipping costs (include them in the totals) and show delivery times. Define maximum order quantity for cart items. Show a free shipping bar and free gifts. Include cart upsells and gift wrap to reduce cart abandonment. more Cart page, cart slider and sticky cart with cart discounts and cart upsells Offer up to three free gifts and a free shipping bar with custom thresholds Show cart announcements with countdown and legal texts with a terms checkbox Include shipping costs in totals, show benefits and estimate delivery dates Add gift wrap and order notes and customize every style to mach your design
Boost conversion rate and AOV through personalized experiences that adapt to your visitors behaviors Vandra’s personalization engine tailors the shopper journey based on where visitors come from, what they do on your site, and AI-powered insights into purchase intent, discount receptiveness, and more. Increase the impact of your ad, email, and SMS campaigns, supercharge your influencer marketing, and turn browsers into buyers by targeting the right person at the right time with the right experience on your site. Vandra’s personalization engine tailors the shopper journey based on where visitors come from, what they do on your site, and AI-powered insights into purchase intent, discount receptiveness, and more. Increase the impact of your ad, email, and SMS campaigns, supercharge your influencer marketing, and turn browsers into buyers by targeting the right person at the right time with the right experience on your site. more Behavioral Targeting - Adapt the experience based on shopper interactions Pre-built Personalization "Recipes" - Launch new experiences in minutes Performance Metrics - Clearly see how personalizations impact CR, AOV, and Sales No-code Experience Builder - No designer or developer needed Integrations with Your Marketing Stack - Klaviyo, Attentive, Meta, and more
AI cart upsell: Post purchase upsell, checkout upsell, thank you page upsell, volume discount & more Vanga AI automates any upsell for a rapid one click upsell experience! A fully custom cart with CSS-open helps you tailor it to your store. Make your cart upsell, cross sell, checkout upsell, post purchase upsell etc consistent with your store needs. Avoid checkout blocks & watch customers come back to rebuy! Boost AOV with an order bump & selleasy with any AI-based upsell: one click upsell, cart upsell, post purchase upsell, checkout upsell, cross sell and more! Install, enable upsells and win! Vanga AI automates any upsell for a rapid one click upsell experience! A fully custom cart with CSS-open helps you tailor it to your store. Make your cart upsell, cross sell, checkout upsell, post purchase upsell etc consistent with your store needs. Avoid checkout blocks & watch customers come back to rebuy! Boost AOV with an order bump & selleasy with any AI-based upsell: one click upsell, cart upsell, post purchase upsell, checkout upsell, cross sell and more! Install, enable upsells and win! more Bump orders with cart upsell, cross sell, checkout upsell, thank you page upsell Boost user confidence with trust badges & the option to add order notes to cart Reconvert carts with checkout upsell, cart upsell, one click upsell & cross sell Tailor your store with pre-order, custom pre-order message & a fully custom cart Integrations with Klaviyo & Kaching bundles: cart upsell + cross sell with ease
Simplify Your Storefront by Hiding Out of Stock Variants Instantly! Elevate your store’s shopping experience with VarHide - Hide Sold Out Variants, the ultimate tool for managing out-of-stock variants in your inventory. This intuitive app automatically hides unavailable or sold out variant options, ensuring a clean and organized storefront. With effortless integration and real-time updates, VarHide keeps your customers focused on what’s available in your store. Elevate your store’s shopping experience with VarHide - Hide Sold Out Variants, the ultimate tool for managing out-of-stock variants in your inventory. This intuitive app automatically hides unavailable or sold out variant options, ensuring a clean and organized storefront. With effortless integration and real-time updates, VarHide keeps your customers focused on what’s available in your store. more Automatically hide out of stock variants from store's display Changes or updates in the stock levels are reflected immediately Flexibility to hide or display out-of-stock variants based on your preferences
Showcase every variant’s unique details – metafields included. Make complex products clear. With Variant Description OMG you can now add a description for each variant. Increase sales, minimize returns, and customer support with descriptions for every product variant. Communicate different shipping times or availability information, provide variant sizing information, display variant materials or fabrics, and differentiate between different kits or combo packages—there are many use cases. This app is the solution for complex products, designed to enhance your product pages. With Variant Description OMG you can now add a description for each variant. Increase sales, minimize returns, and customer support with descriptions for every product variant. Communicate different shipping times or availability information, provide variant sizing information, display variant materials or fabrics, and differentiate between different kits or combo packages—there are many use cases. This app is the solution for complex products, designed to enhance your product pages. more Add a description for each product variant and display variant metafields Use your own custom variant metafield and show shipping times or specifications No coding require. Easy installation for both Online Store 2.0 and Legacy themes Rich full text editor that supports images, videos, links, tables and many more Bulk import and export
Add unique variant descriptions to your products. A simple way to showcase product variant details. With Variant Description Pro you can now add a description for each variant. And support bulk editing. Increase sales, minimize returns, and customer support with descriptions for every product variant. Communicate different shipping times or availability information, provide variant sizing information, display variant materials or fabrics—there are many use cases. This app is the solution for complex products, designed to enhance your product pages. With Variant Description Pro you can now add a description for each variant. And support bulk editing. Increase sales, minimize returns, and customer support with descriptions for every product variant. Communicate different shipping times or availability information, provide variant sizing information, display variant materials or fabrics—there are many use cases. This app is the solution for complex products, designed to enhance your product pages. more Add a description for each product variant Add input/option for each product variant Rich full text editor that supports images, videos, links, tables and many more Bulk add/update descriptions for product variants The app works with all themes. Chat with us to customize app as per your needs
Related Categories
About Custom CSS Apps for Shopify
Custom CSS apps are essential tools for Shopify merchants looking to enhance their store's functionality and improve customer experience. These specialized applications help store owners streamline operations, increase sales, and provide better service to their customers.
When choosing a custom css app for your Shopify store, consider factors such as features, pricing, customer support, and compatibility with your theme and other apps. Reading reviews from other merchants can also provide valuable insights into the app's performance and reliability.
The apps listed on this page represent some of the best custom css solutions available in the Shopify App Store. Each has been selected based on its functionality, user ratings, and overall value for Shopify merchants.