Size Chart App to easily add and customize Image, Video & PDF Size Quides for all your products. With Beuniq Size Chart, merchants can easily add their size chart in form of image, pdf, editor table or video for easy understanding of the users to the size they want to buy. The app provides option to show the size as link or button which when clicked, popup is shown. With multiple settings options the merchants can create size chart link as per their themes look and feel. You can either show size chart either as pop up or inline with easiest way to relocate size chart on product page. With Beuniq Size Chart, merchants can easily add their size chart in form of image, pdf, editor table or video for easy understanding of the users to the size they want to buy. The app provides option to show the size as link or button which when clicked, popup is shown. With multiple settings options the merchants can create size chart link as per their themes look and feel. You can either show size chart either as pop up or inline with easiest way to relocate size chart on product page. more Reduce Return Rate Use the app for sizing charts to convert cm/ inches automatically. Upload Size charts in form of Image | PDF | Video | Editor table Size chart as Pop up or Inline. Easy step to relocate size chart link Desktop & Mobile compatible / Show as Link or Button which will open PopUp
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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View Best Custom CSS AppsTransform Visitors into Your Sales fleet Bevy Share Cart adds a sleek share button to your store's cart page, allowing customers to share their shopping carts on social media with a single click. When recipients click the shared link, they can instantly replicate the exact cart and proceed to checkout, creating a seamless social shopping experience. Bevy Share Cart seamlessly integrates with your Shopify store, adding a powerful social sharing capability that helps expand your reach and drive conversions. Bevy Share Cart adds a sleek share button to your store's cart page, allowing customers to share their shopping carts on social media with a single click. When recipients click the shared link, they can instantly replicate the exact cart and proceed to checkout, creating a seamless social shopping experience. Bevy Share Cart seamlessly integrates with your Shopify store, adding a powerful social sharing capability that helps expand your reach and drive conversions. more Track cart sharing activity and revenue generated from shared carts Choose between automatic or manual installation to fit your store setup Select from pre-built themes or customize to match your brand identity Incentivize sharing by rewarding customers who share their carts (PRO)
Size Chart App to easily add and customize size charts & size guides for all your products. Create clean size charts for all your size variations. Customize with text and images in our custom text boxes. For tshirts, apparel brands, shoe size charts, & detail body measurement. Create smart size charts based on collections and product tags. Previously known as Best Fit Size Charts. Use with Vajro, seize charte, image size chart, VO Product option, product page size chart, fb size chart pop up, size guide app, sizing guide Create clean size charts for all your size variations. Customize with text and images in our custom text boxes. For tshirts, apparel brands, shoe size charts, & detail body measurement. Create smart size charts based on collections and product tags. Previously known as Best Fit Size Charts. Use with Vajro, seize charte, image size chart, VO Product option, product page size chart, fb size chart pop up, size guide app, sizing guide more BF Sizechart app built to reduce returns, because size matters on every product. Use our sizeguide app for sizing charts to convert cm/ inches measurements. Build your BF Sizing Chart and add a size table on your product pages. Use as a jewelry ring size chart and ring sizer app as a size finder Responsive & clean size chart app, size app, fit finder, & sizing guide
Attract customers, increase the time spent on the site, boost conversion, and grow your sales! Just one app for onsite marketing allows you to create and add high-converting bars and banners to your store. A lot of promotion banners are available - easy setup and flexible customization from simple banners to a slide show. Multi Announcement Banner Slider, Action Bar, Single Announcement Bar, Sales Motivation Bar, Email Sign-up Bar, Coupon Bar, Free Shipping Bar, Countdown Timer Bar, Cookie Consent Bar, Add To Cart Bar, Global Location Bar are ready to boost your sales! Just one app for onsite marketing allows you to create and add high-converting bars and banners to your store. A lot of promotion banners are available - easy setup and flexible customization from simple banners to a slide show. Multi Announcement Banner Slider, Action Bar, Single Announcement Bar, Sales Motivation Bar, Email Sign-up Bar, Coupon Bar, Free Shipping Bar, Countdown Timer Bar, Cookie Consent Bar, Add To Cart Bar, Global Location Bar are ready to boost your sales! more A lot of banner types in one application Analytics and A/B testing Customizable and responsive Show banners on schedule Audience targeting by device, location
Make beautiful bundle builders, mix and match product bundles, build your own bundle & build a box. Biscuits Bundles is a bundle builder for mix and match products. Let customers 'build your own bundle' or 'build a box' to boost average order value. Apply pricing rules including volume discounts, quantity breaks, fixed pricing, or percentage off. Control min/max selections and total quantity limits per step. Easy theme integration via app blocks. Perfect for mix and match product bundles, personalised kits & gift sets. Requires OS 2.0 theme. Supports language translations across Markets. Biscuits Bundles is a bundle builder for mix and match products. Let customers 'build your own bundle' or 'build a box' to boost average order value. Apply pricing rules including volume discounts, quantity breaks, fixed pricing, or percentage off. Control min/max selections and total quantity limits per step. Easy theme integration via app blocks. Perfect for mix and match product bundles, personalised kits & gift sets. Requires OS 2.0 theme. Supports language translations across Markets. more Bundle builder with collapsible steps to guide customers through choices. Mix and match with min/max selections, display options & quantity limits. Build a box with fixed price, percentage/amount off, or volume discount pricing. Customise your product bundles in the theme editor with advanced options. Build your own bundle with language translations across Shopify Markets.
Unlimited login with Apple, Google, WhatsApp OTP—one-click sign-in. Grow your list with smart forms. bitLogin transforms every customer sign-in into a powerful growth opportunity. With over ten login options like Apple, Google One Tap, and WhatsApp OTP, your customers enjoy quick, secure access. Our smart, customizable forms capture valuable first-party data, giving you the insights to build targeted marketing campaigns and grow your contact list. Ideal for merchants seeking to streamline signups and drive conversions. bitLogin transforms every customer sign-in into a powerful growth opportunity. With over ten login options like Apple, Google One Tap, and WhatsApp OTP, your customers enjoy quick, secure access. Our smart, customizable forms capture valuable first-party data, giving you the insights to build targeted marketing campaigns and grow your contact list. Ideal for merchants seeking to streamline signups and drive conversions. more Enable 10+ social logins: Google, Instagram, WA, FB, Apple & more in one click WhatsApp OTP for secure sign‑in Collect first-party customer data to power personalized marketing Boost conversions with engaging sign-up and voucher pop-ups Leverage Magic Link, Google One Tap, and effortless mobile app logins
Blockify Age verification popup: Age check, Age verify, Terms & Conditions, Ensure Legal Compliance Blockify - Age Verifier: Safeguard your Shopify store and maintain legal compliance & privacy with our fully customizable 18+, 21+ age verification popup - no coding required! Effortlessly set up age verification using the birth date option. Limit age or set age restrictions on accessing your store and age checkout. With our age verification app, you can swiftly create a secure age checker and compliant website in just a few clicks. Protect your store with an Terms and Conditions Checkbox. Blockify - Age Verifier: Safeguard your Shopify store and maintain legal compliance & privacy with our fully customizable 18+, 21+ age verification popup - no coding required! Effortlessly set up age verification using the birth date option. Limit age or set age restrictions on accessing your store and age checkout. With our age verification app, you can swiftly create a secure age checker and compliant website in just a few clicks. Protect your store with an Terms and Conditions Checkbox. more Age verifier: Ensure legal compliance with the Age Verification Popup Set a minimum age requirement with Date of Birth verification Choose from age popup templates or customize them to match your store branding Restriction age popup looks good on different screen resolutions Terms & Conditions for terms of service, privacy policy, policies and contracts.
Intelligent search and merchandising that drives immediate ROI and RPV. Bloomreach Discovery offers AI-Driven product discovery focused on ROI. It leverages Loomi, our industry leading AI for ecommerce, to further drive product discovery. The Bloomreach Discovery x Shopify connector significantly simplifies your implementation to make sure pixel data from your storefront is fed appropriately into Bloomreach Discovery. Build your storefront quicker with a templated search UI and components for search results pages, facets and autosuggest. Bloomreach Discovery offers AI-Driven product discovery focused on ROI. It leverages Loomi, our industry leading AI for ecommerce, to further drive product discovery. The Bloomreach Discovery x Shopify connector significantly simplifies your implementation to make sure pixel data from your storefront is fed appropriately into Bloomreach Discovery. Build your storefront quicker with a templated search UI and components for search results pages, facets and autosuggest. more Autosuggest guides your site visitors and maximizes relevance of search results Search & category pages make it easy for shoppers to navigate your products. Bloomreach Recommendations displays recommended products powered by our Loomi AI
Sell more with free shipping bar, progress bar & product upsell in cart drawer & more BlueCart displays your free shipping bar, discount & reward milestones progressively using progress bar, checklist & floating button based on cart value and show prices based on user's market. This makes it easier for customers to track their progress toward greater discounts, motivating them to add more product to cart, ultimately increasing the average order value (AOV). With product upsell & tiered progress bar, customer will be enticed to add more product to cart to maximise rewards. BlueCart displays your free shipping bar, discount & reward milestones progressively using progress bar, checklist & floating button based on cart value and show prices based on user's market. This makes it easier for customers to track their progress toward greater discounts, motivating them to add more product to cart, ultimately increasing the average order value (AOV). With product upsell & tiered progress bar, customer will be enticed to add more product to cart to maximise rewards. more Add progress bar and cart upsell anywhere with app extension & shortcode Display conditions to target buyers from different markets, tags, UTM & more Auto convert currencies or set a specific goal based on buyer's market Comprehensive design options with pre-defined styles to match your theme Floating button for buyer to track their cart progress towards the next reward
Boost AOV with BOGO, Buy x get y, Free gift with purchase, Bundle, Volume Discount, Checkout Upsell BOGOS (formerly Free Gifts by Secomapp) is a one-stop app for creating BOGO, Free gift with purchase, Bundles, Tiered discounts, and Upsells - all powered by intuitive, fully customizable widgets. Over the past 11 years, BOGOS has helped 76K+ brands worldwide run offers perfectly, generate more orders while elevating shopping experience. It also supports POS & Headless, provides advanced targeting, analytics, translation, and AI assistant. Prompt chat and technical support are always available. BOGOS (formerly Free Gifts by Secomapp) is a one-stop app for creating BOGO, Free gift with purchase, Bundles, Tiered discounts, and Upsells - all powered by intuitive, fully customizable widgets. Over the past 11 years, BOGOS has helped 76K+ brands worldwide run offers perfectly, generate more orders while elevating shopping experience. It also supports POS & Headless, provides advanced targeting, analytics, translation, and AI assistant. Prompt chat and technical support are always available. more Offer Free gift, Buy one get one free, BXGY with auto add to cart, gift pop-up Create product bundle, mix and match, and bundle builder (build a box) Set up volume discounts, quantity breaks, and discount on the cheapest item Checkout upsell with discount code, frequently bought together & thank you page Promote offers with progress bar, offer page, today offer & gift thumbnail
Drive sales w/ AI Upsells, Cross Sell &. Checkout, Pre/Post Purchase, Cart Drawer & Upsell Funnels! NEW PLANS! Boost AOV with Bold’s Upselling and Cross Selling app. Use Smart AI to show hyper-personalized offers or build manual funnels. Drive revenue with Frequently Bought Together bundles, Order Bumps, True Upsell upgrades, and Buy X Get Y & Gift offers. Target shoppers at every stage: Pre-Purchase, Cart Drawer, Product Page, In-Checkout, and Post-Purchase One Click Upsells. Turn one-time buyers into subscribers! Easy setup in minutes with no coding. Track ROI and conversions with analytics. NEW PLANS! Boost AOV with Bold’s Upselling and Cross Selling app. Use Smart AI to show hyper-personalized offers or build manual funnels. Drive revenue with Frequently Bought Together bundles, Order Bumps, True Upsell upgrades, and Buy X Get Y & Gift offers. Target shoppers at every stage: Pre-Purchase, Cart Drawer, Product Page, In-Checkout, and Post-Purchase One Click Upsells. Turn one-time buyers into subscribers! Easy setup in minutes with no coding. Track ROI and conversions with analytics. more SMART AI Upsell, Cross Sell and Frequently Bought Together Product Page Bundles. High-converting Checkout Upsell, Cart Drawer, Pre & Post Purchase Upsell offers. Create Upsell Funnels, Cross Sells, Order Bumps & Downsell offers to boost AOV. Seamless CLTV boosting integration with Bold Subscriptions for recurring revenue Easy setup! Upsell Analytics dashboard to track upsells and funnel performance.
One booking app for 100+ servicing models: Appointments| Rentals| Events| Concerts| One day booking| Introducing all-in-one booking app, Designed to serve 100+ servicing models. Effortlessly manage appointments, events, one day booking, concerts, rentals- whether by the hour or day-wise. Advanced features like QR code generator, Google Meet, calendar integration, Booking without checkout, security deposits, single/multi-user or multi-day options, in-person booking, & staff management. Different booking layouts to choose from. Launch with-in 1 hour. No technical expertise needed. Introducing all-in-one booking app, Designed to serve 100+ servicing models. Effortlessly manage appointments, events, one day booking, concerts, rentals- whether by the hour or day-wise. Advanced features like QR code generator, Google Meet, calendar integration, Booking without checkout, security deposits, single/multi-user or multi-day options, in-person booking, & staff management. Different booking layouts to choose from. Launch with-in 1 hour. No technical expertise needed. more Interface to Add Booking Feature to the Products| Automate Google Meet links| Offer service to customers as Doctors|Dance classes|Tuition's|Consultations| etc Manage Booking i operations l.e. Approve,Reschedule,Cancel the Customer Booking. Easily blackout certain dates from the booking period. Admin can add Custom Fields and Custom Information with the Product on Booking.
Appointment booking app & scheduler for reservations, workshops, event booking, classes & ticketing. BookX is a no-code online booking system like Eventbrite. Manage appointment booking for a doctor clinic consultation, spa, salon, studio, boutique, pet grooming, restaurant or webinar. Scale with rental booking, hotel booking, and bundle booking using a calendar widget with capacity limits. Use the scheduler to blockout holidays and enable payment less appointment options. Perfect for sport, court, venue, course, or restaurant booking. Your Calendly for Shopify! BookX is a no-code online booking system like Eventbrite. Manage appointment booking for a doctor clinic consultation, spa, salon, studio, boutique, pet grooming, restaurant or webinar. Scale with rental booking, hotel booking, and bundle booking using a calendar widget with capacity limits. Use the scheduler to blockout holidays and enable payment less appointment options. Perfect for sport, court, venue, course, or restaurant booking. Your Calendly for Shopify! more Hourly, full-day, multi-day appointment with capacity & booking deadline. Manage team members & locations with unique schedules & service booking form. Allow payment-less appointments & booking widget on any page without product. Integrate services with Google Calendar, Google Meet, Zoom & Klaviyo. Enable customers to reschedule & manage bookings with user friendly dashboard.
Increases conversion rate & AOV with AI search & discovery, smart product filters & merchandising Boost gives you fast, intuitive AI search to help shoppers find what they love faster. Lift AOV with smart bundles and personalized cross sell & upsell. Keep customers engaged with preorder & back in stock alerts. No coding needed, just easy customization, eye-catching merchandising, and advanced filters that fit your theme. Plus, our team’s here to support you every step of the way. Boost gives you fast, intuitive AI search to help shoppers find what they love faster. Lift AOV with smart bundles and personalized cross sell & upsell. Keep customers engaged with preorder & back in stock alerts. No coding needed, just easy customization, eye-catching merchandising, and advanced filters that fit your theme. Plus, our team’s here to support you every step of the way. more Faster Search and Discovery: instant results even with typos or vague searches. Smarter Product Filters: guide shoppers using filters by tag, metafield, variant More AOV with AI Bundles: grow cart size using personalization & recommendations Visual Merchandising: pin, boost, or reorder products to highlight best sellers Global Scale Multi-language, currency & marketplaces synced across storefronts.
Turn carts into sales with milestone rewards, upsells, and a seamless shopping experience! Enhance your Shopify store by turning every cart into an opportunity. With features like milestone rewards, empty cart upselling, customizable announcement bars, and smart cross-selling, you'll drive sales and customer engagement. Provide personalized cart notes to create a memorable shopping experience. Plus, with an easy-to-use admin panel, managing everything is quick and efficient, helping you drive conversions effortlessly. Enhance your Shopify store by turning every cart into an opportunity. With features like milestone rewards, empty cart upselling, customizable announcement bars, and smart cross-selling, you'll drive sales and customer engagement. Provide personalized cart notes to create a memorable shopping experience. Plus, with an easy-to-use admin panel, managing everything is quick and efficient, helping you drive conversions effortlessly. more Upsell using milestone rewards & Cross Sell from your cart Add products to your Empty cart, to upsell and suggest Showcase discounts, freebies and special offers through Announcement Bar Personalize orders using Cart Notes
Add a simple slide cart drawer with upsells, rewards, and more features to increase your AOV. Create a user-friendly slide cart drawer that simplifies checkout for your customers. Our cart drawer showcases upsells, lets customers apply discounts, and estimates shipping rates—all without leaving the page. Boost your average order value (AOV) with features like engaging cart upsells, a progress bar for free shipping, and a sticky add-to-cart button to enhance conversions. Customize the cart’s design to fit your brand & minimize cart abandonment with easy access from anywhere in the store. Create a user-friendly slide cart drawer that simplifies checkout for your customers. Our cart drawer showcases upsells, lets customers apply discounts, and estimates shipping rates—all without leaving the page. Boost your average order value (AOV) with features like engaging cart upsells, a progress bar for free shipping, and a sticky add-to-cart button to enhance conversions. Customize the cart’s design to fit your brand & minimize cart abandonment with easy access from anywhere in the store. more In-cart upselling: Boost your average order value with upsell and volume offers. Announcement bar: Inform customers of updates and promotions right in the cart. Discount box: Easily apply and stack discount codes within the cart drawer. Shipping rate estimator: Allow customers to calculate shipping costs quickly. Trust badge: Enhance customer confidence with visible trust indicators.
Convert visitors with popups, Wheel of Fortune, and product recommendations. Create popups and announcement bars for email and SMS signup, discounts, free shipping, countdowns, and cart messages. Add gamification with Wheel of Fortune to increase opt-ins. Promote products with built-in recommendations: manual picks, top sellers, and trending. Target by page, device, location, language, and behavior rules. Fully mobile responsive, with styling controls and optional custom CSS. Track views, clicks, and signups with analytics. Create popups and announcement bars for email and SMS signup, discounts, free shipping, countdowns, and cart messages. Add gamification with Wheel of Fortune to increase opt-ins. Promote products with built-in recommendations: manual picks, top sellers, and trending. Target by page, device, location, language, and behavior rules. Fully mobile responsive, with styling controls and optional custom CSS. Track views, clicks, and signups with analytics. more Wheel of Fortune popups to gamify discounts and signups Product recommendations: manual picks, top sellers, trending Email and SMS capture pop-ups that are fully mobile responsive Announcement bars for free shipping, coupons, and countdown urgency Targeting by page, device, geo, language, and behavior rules
Supercharge Sales and Increase Order Value with a User-Friendly Cart Upgrade Create a seamless, user-friendly slide cart that complements your website's style and optimizes your Average Order Value (AOV). Our feature-packed cart builder ensures customer satisfaction and simplifies the cart process.Effortlessly maximize revenue with upselling and cross-selling options, and incorporate a sticky cart button to enhance conversions and reduce cart abandonment. Explore the capabilities of Boosty Cart Drawer Cart Upsell, making every cart interaction an opportunity for growth. Create a seamless, user-friendly slide cart that complements your website's style and optimizes your Average Order Value (AOV). Our feature-packed cart builder ensures customer satisfaction and simplifies the cart process.Effortlessly maximize revenue with upselling and cross-selling options, and incorporate a sticky cart button to enhance conversions and reduce cart abandonment. Explore the capabilities of Boosty Cart Drawer Cart Upsell, making every cart interaction an opportunity for growth. more Show Sticky Add to Cart, Slide Cart to desktop or mobile Display Upsell Product Recommendations (Cart Upsell) Create Free Shipping Progressive Bar, Cart Countdown Timer Create an Add-On option for shipping insurance or other products of your choice. Improve the view cart button's visibility with a sticky cart button.
Gift Box & Bundle Builder: Upsell/CRO/AOV/BOGO/Discount/Sales Funnels/Flash & Sales box, tape, card. Box King – Your Ultimate Bundle Building Companion! Drive sales with our feature-rich Bundle Builder! Enhance success by raising AOV with custom bundles. Customize bundles, let customers mix and match for personalized gift boxes. Optimize revenue with well-designed Upsell, CRO, and AOV-boosting funnels, including captivating Flash & Sales boxes that make your store stand out and entice customers. Global success: Box King helps strategically liquidate surplus inventory with pre-created bundles. Box King – Your Ultimate Bundle Building Companion! Drive sales with our feature-rich Bundle Builder! Enhance success by raising AOV with custom bundles. Customize bundles, let customers mix and match for personalized gift boxes. Optimize revenue with well-designed Upsell, CRO, and AOV-boosting funnels, including captivating Flash & Sales boxes that make your store stand out and entice customers. Global success: Box King helps strategically liquidate surplus inventory with pre-created bundles. more Maximize revenue with Upsell, CRO, AOV funnels, and exciting Flash & Sales Boxes Drive purchases with crafted promos, integrating discounts, deals, and freebies No hassle inventory: Bundle sync, from 3PL to Fulfilment, streamlined processes Global success: Box King helps liquidate surplus inventory via pre-built bundles Boost store revenue with Box King—every bundle is a sales opportunity!
Optimize Your Store's Navigation with Custom Breadcrumbs Our app is a crucial asset for merchants aiming to enhance SEO rankings and streamline user experience. Ideal for businesses of any size, our app simplifies intricate hierarchies, ensuring effortless navigation and effective customer engagement. Whether you're a growing e-commerce store or an established business, Breadcrumbs optimizes visibility and provides a user-friendly browsing journey. Streamline your online presence effortlessly for improved customer satisfaction and increased traffic. Our app is a crucial asset for merchants aiming to enhance SEO rankings and streamline user experience. Ideal for businesses of any size, our app simplifies intricate hierarchies, ensuring effortless navigation and effective customer engagement. Whether you're a growing e-commerce store or an established business, Breadcrumbs optimizes visibility and provides a user-friendly browsing journey. Streamline your online presence effortlessly for improved customer satisfaction and increased traffic. more Improve SEO rankings and drive organic traffic. Customize appearance and position effortlessly. Create unique hierarchies for categories and products. Enhances SEO by generating a JSON-LD BreadcrumbList schema
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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.