Recommend the correct size for clothes and shoes – get more sales and fewer returns No more boring and inaccurate size charts and size guides! Make shopping easier for your customers with our Fit Quiz. Recommend the correct size, as well as fit, width and length – on a product (SKU)-level. It takes less than 15 secs. for first-time shoppers to get a recommendation. Automatic recommendations for regulars. No sensitive questions like weight, body measurements, body scans. All the clothing and footwear categories are supported (female and male). Kidswear is not supported yet. No more boring and inaccurate size charts and size guides! Make shopping easier for your customers with our Fit Quiz. Recommend the correct size, as well as fit, width and length – on a product (SKU)-level. It takes less than 15 secs. for first-time shoppers to get a recommendation. Automatic recommendations for regulars. No sensitive questions like weight, body measurements, body scans. All the clothing and footwear categories are supported (female and male). Kidswear is not supported yet. more More sales and fewer returns for clothing and footwear brands (including unisex) Customize the design (colours, fonts, icons) and enable multi-language support Easy to set up, no size charts or garment measurements required Additional recommendations – length, width, fit Performance reports and analytics on sizing & fitting preferences of shoppers
Custom CSS Shopify Apps
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Highly customizable slide-out cart with cross-sells & add-ons for a better AOV & user experience. Easily personalize your cart using our drag-and-drop editor. Choose and add our conversion-boosting features to your new slide-out cart. Increase average order value with hand-picked or smart cross-sells. Boost sales using the free shipping progress bar, low stock alerts, and promo banners. Enable the added-to-cart popup with custom layouts. Finally, match the cart to your theme with extensive customization tools. Our in-house technical support is always around for any support needs. Easily personalize your cart using our drag-and-drop editor. Choose and add our conversion-boosting features to your new slide-out cart. Increase average order value with hand-picked or smart cross-sells. Boost sales using the free shipping progress bar, low stock alerts, and promo banners. Enable the added-to-cart popup with custom layouts. Finally, match the cart to your theme with extensive customization tools. Our in-house technical support is always around for any support needs. more Custom Cart Builder: Create a visible slide-out cart & side cart on all pages Recommended Items: Boost AOV with handpicked, global or smart cross-sells Free Shipping Bar: Display a prominent progress bar for customer confidence Sticky Quick Purchase Bar on Product Pages: Easy add to cart at any point Customizable Cart Blocks: Add promo bars, notes, trust badges, popups and more
Supercharge Your Sales: Elevate the shopping experience with our search and dynamic filter Flash Search helps customers find your product easily & instantly with AI filters. Support: Advanced Product Search Autocomplete, Spell-check & Typo Autocorrection, Instant search suggestions with live product preview, Smart Search across product and content, Synonyms & Stopwords, Suggestion Dictionary, “Did you mean” feature to avoid giving zero results, Keyword-based redirects. You can also customize look and feel of search bar easily. Flash Search helps customers find your product easily & instantly with AI filters. Support: Advanced Product Search Autocomplete, Spell-check & Typo Autocorrection, Instant search suggestions with live product preview, Smart Search across product and content, Synonyms & Stopwords, Suggestion Dictionary, “Did you mean” feature to avoid giving zero results, Keyword-based redirects. You can also customize look and feel of search bar easily. more Advanced Search: Auto Fill and Auto Correct, Instant Search Suggestions, Synonym Vertical & horizontal filter menu, Quick View, Add to Cart,Optimized for mobile Convert more with smart search, merchandising and upsell recommendations Unlimited number of customizable filters; filers by reviews, tags & metafields Support product grid layouts from popular Shopify themes & third-party themes
Add unlimited product options & variants. Boost sales with seamless customer personalization. Flexi Variants enables Shopify merchants to add unlimited custom product options without coding. Create checkboxes, radio buttons, text fields, file uploads, and color swatches with conditional logic. Features include localization for 10+ languages, fully customizable UI, and a developer console for advanced control. Apply option sets across multiple products to streamline management. Perfect for stores requiring product personalization to increase customer satisfaction and sales. Flexi Variants enables Shopify merchants to add unlimited custom product options without coding. Create checkboxes, radio buttons, text fields, file uploads, and color swatches with conditional logic. Features include localization for 10+ languages, fully customizable UI, and a developer console for advanced control. Apply option sets across multiple products to streamline management. Perfect for stores requiring product personalization to increase customer satisfaction and sales. more Create unlimited product options with conditional logic and file uploads Localize option sets in 10+ languages with fully customizable UI interface Apply reusable option sets to unlimited products with bulk management tools Advanced developer console for custom integrations and workflow automation Real-time conditional logic that shows/hides options based on selections
Google and IAB certified consent management solution for GDPR compliance. It is uniquely designed for seamless GDPR compliance, offering a certified consent management solution. Merchants will appreciate its user-friendly interface and automated compliance features, reducing the complexity of GDPR adherence. It addresses the critical need for legal compliance, protecting businesses from potential fines and boosting customer trust. By ensuring data privacy compliance, it helps merchants build trust with their customers and operate within legal frameworks. It is uniquely designed for seamless GDPR compliance, offering a certified consent management solution. Merchants will appreciate its user-friendly interface and automated compliance features, reducing the complexity of GDPR adherence. It addresses the critical need for legal compliance, protecting businesses from potential fines and boosting customer trust. By ensuring data privacy compliance, it helps merchants build trust with their customers and operate within legal frameworks. more Easy installation and setup directly from your Shopify dashboard. Supports GDPR consent management regulations. Fully customizable to match your store’s look and feel. Provides a detailed report to give comprehensive insight on consent rate. Automatically update to stay compliant with the latest laws.
Add unlimited floating widgets, popups, videos, banners, surveys... to your store. The Floatly Floating Widgets App lets you add unlimited widgets to your store. It lets you add banners, offers, announcements, videos, surveys and embed any widget to your store. The widgets are floating on the page. You can change the widgets settings, position, size, make them closable, add a delay before they get opened... You can even restrict widgets to specific pages. The app has many more features. The Floatly Floating Widgets App lets you add unlimited widgets to your store. It lets you add banners, offers, announcements, videos, surveys and embed any widget to your store. The widgets are floating on the page. You can change the widgets settings, position, size, make them closable, add a delay before they get opened... You can even restrict widgets to specific pages. The app has many more features. more Easily display messages/banners to your customers. Very customizable as it allows you to add and fully configure the widgets. Add unlimited Floating Widgets, PopUps, Videos, Banners, Surveys... Restrict widgets to specific pages. Add delays before widgets get displayed. Add closable and non-closable widgets.
Flowbox is a User Generated Content platform developed for established eCommerce brands. Flowbox is a User Generated Content platform that helps brands leverage and distribute social content throughout the buyer journey to increase engagement, social proof and sales. Through our platform, our customers are able to collect, moderate and publish content to their website, online shop and social channels. Flowbox was founded in 2016 and is headquartered in Stockholm with regional offices in Amsterdam and Barcelona. Flowbox is a User Generated Content platform that helps brands leverage and distribute social content throughout the buyer journey to increase engagement, social proof and sales. Through our platform, our customers are able to collect, moderate and publish content to their website, online shop and social channels. Flowbox was founded in 2016 and is headquartered in Stockholm with regional offices in Amsterdam and Barcelona. more The key features you expect Built for the most demanding brands Rely on advanced data-driven insights Fuel every customer interaction with UGC
Maximize AOV with product bundles, combos, quantity breaks, volume discounts, upsells & BOGO deals Use Fly Bundles to build your AOV engine with pre-curated fixed bundle, quantity breaks, and volume discounts! Experience next level bundle performance with conversion-optimized templates & unlimited design configurations for product bundle, combos and kits. Curate an impactful bundle experience for your store with strategic tactics like bulk discounting, progressive free gifts, quick bundle add-ons, subscription, bundle upsell blocks, and of-course our hands-on support & knowledge throughout. Use Fly Bundles to build your AOV engine with pre-curated fixed bundle, quantity breaks, and volume discounts! Experience next level bundle performance with conversion-optimized templates & unlimited design configurations for product bundle, combos and kits. Curate an impactful bundle experience for your store with strategic tactics like bulk discounting, progressive free gifts, quick bundle add-ons, subscription, bundle upsell blocks, and of-course our hands-on support & knowledge throughout. more Breakdown of bundles for auto discounting, inventory sync, fulfilment, & return Gain insights into bundle performance with analytics to maximize profitability Variant level pricing and discounting including unlimited variant options Build well integrated, beautiful native widgets with zero impact on store speed Seamlessly integrates with major side carts & page builders
App provides Upsell based Cart Drawer | Popup | Progress Shipping bar | Discount | Agree Terms Flying Cart Slide Drawer Cart skips the redirection to cart page when product is added to cart and show sidebar cart drawer or popup with your cart items. The app also includes the functionalities of Progress Shipping Bar, Discounts, Agree Terms, Upsell. You can rely on the app for hassle free experience for your users to see there products in cart anytime on your site and checkout at the same time. It also includes animated checkout button in cart drawer which will attract users attention. Flying Cart Slide Drawer Cart skips the redirection to cart page when product is added to cart and show sidebar cart drawer or popup with your cart items. The app also includes the functionalities of Progress Shipping Bar, Discounts, Agree Terms, Upsell. You can rely on the app for hassle free experience for your users to see there products in cart anytime on your site and checkout at the same time. It also includes animated checkout button in cart drawer which will attract users attention. more Easy Installation with no coding skill required | Boost Sales with Upselling Update cart through Cart Drawer and easy checkout option | Fully Customization Free Shipping Progress Bar with indicating amount left for free shipping Promo Code for adding discount coupon on slide cart only Announcement bar | I Agree To Cart Terms | Upsell | Cart Notes
Boost urgency & sales with customizable countdown timers on your store. FOMO - Countdown Timer Pro helps you drive sales by creating a sense of urgency. With customizable countdown timers, showcase limited-time offers and flash sales across your product pages. Perfect for promotions, it encourages quick purchases and reduces cart abandonment for higher conversions. FOMO - Countdown Timer Pro helps you drive sales by creating a sense of urgency. With customizable countdown timers, showcase limited-time offers and flash sales across your product pages. Perfect for promotions, it encourages quick purchases and reduces cart abandonment for higher conversions. more Customizable Countdown: Personalize fonts, colors, layouts, and preview live. Seamless Integration: Countdown timer appears on product pages as designed. Synced Countdown Action: Timer starts per settings, synced in preview and store.
Build custom forms with our easy-to-use Form Builder app. # At a Glance * You can build beautiful online forms as simple as 123. Just drag & drop fields to your form, select your notification email, and publish the form to any page. Minimum coding Skill required! * Creating your contact forms, order forms, event registration forms, online surveys and any other types of web forms has never been this easy! With the Advanced Form Builder real-time form editor, you can create and customize your form in minutes. Minimum coding skills required. # At a Glance * You can build beautiful online forms as simple as 123. Just drag & drop fields to your form, select your notification email, and publish the form to any page. Minimum coding Skill required! * Creating your contact forms, order forms, event registration forms, online surveys and any other types of web forms has never been this easy! With the Advanced Form Builder real-time form editor, you can create and customize your form in minutes. Minimum coding skills required. more Improve customer loyalty and drive business growth Easy-to-use interface and advanced features Create custom forms quickly and easily with minimum coding knowledge
Form builder with drag & drop, multilanguage, upload fields, auto styling and email autoresponder. With our form builder, you can create custom forms with important fields like Google reCaptcha and file image upload. Our AI-powered form editor allows you to build basic but also complex multistep forms like warranty claim, product registration, extended contact form, customer registration and company registration. View your submissions, UTMs and uploaded files of your form inside the app and approve or reject submissions. All created forms are WCAG compliant fast, responsive and pretty. With our form builder, you can create custom forms with important fields like Google reCaptcha and file image upload. Our AI-powered form editor allows you to build basic but also complex multistep forms like warranty claim, product registration, extended contact form, customer registration and company registration. View your submissions, UTMs and uploaded files of your form inside the app and approve or reject submissions. All created forms are WCAG compliant fast, responsive and pretty. more Multilanguage - translate your form and emails to all languages of your shop. Drag & drop builder - build any form, without code. Automate - connect your form with Shopify customers and third party apps. Upload field - add an upload field to your form for images or files. Auto styling - automatic form styling with your OS 2.0 theme and are very fast.
「formrun（フォームラン）」は、フォーム作成やフォームに入力された顧客情報の管理までをワンストップで行うことができるツールです。 多種多様なテンプレートから1つを選択することで、エンジニアの手を借りずとも誰でも簡単にフォーム作成することができ、フォームから送信された顧客情報をステータス毎にチームで管理することができるボード画面、複数人で利用できるメール機能により、顧客獲得からコミュニケーション対応の生産性向上に貢献します。 本アプリの利用に関しては、「リソース」の「よくある質問」に掲載された「利用規約」が適用されます。必ず事前に内容をご確認ください。アプリのご利用を頂いた場合、「利用規約」にご同意頂いたものとみなされます。 多種多様なテンプレートから1つを選択することで、エンジニアの手を借りずとも誰でも簡単にフォーム作成することができ、フォームから送信された顧客情報をステータス毎にチームで管理することができるボード画面、複数人で利用できるメール機能により、顧客獲得からコミュニケーション対応の生産性向上に貢献します。 本アプリの利用に関しては、「リソース」の「よくある質問」に掲載された「利用規約」が適用されます。必ず事前に内容をご確認ください。アプリのご利用を頂いた場合、「利用規約」にご同意頂いたものとみなされます。 more 柔軟で拡張性高いフォーム作成 お問い合わせ内容の確認 各お問い合わせの担当者や対応状況の可視化、メール対応
AI-powered skin analysis with personalized product recommendations Formulary's exclusive skin-scanning technology enables customers to conveniently scan their faces from any location and receive instant results. By pinpointing Formulary's six skin health markers—wrinkles, blemishes, eye area, pigmentation, elasticity, and hydration—the app generates immediate results and personalized product recommendations from your lineup. This offers clear insights into individual skincare needs, empowering customers to make confident purchasing decisions. Formulary's exclusive skin-scanning technology enables customers to conveniently scan their faces from any location and receive instant results. By pinpointing Formulary's six skin health markers—wrinkles, blemishes, eye area, pigmentation, elasticity, and hydration—the app generates immediate results and personalized product recommendations from your lineup. This offers clear insights into individual skincare needs, empowering customers to make confident purchasing decisions. more Easy to install, customize and use Scan face from anywhere, receive instant results Delivers personalized product and treatment recommendations Empower customers to make confident purchasing decisions
Make Instagram, TikTok, and UGC galleries shoppable. Increase time on site and boost conversions. Supercharge your Shopify store with Foursixty’s social commerce tools. Create shoppable galleries using Instagram, TikTok, UGC, and ambassador content. Showcase real content where it counts on homepages, product pages, email, and the Shop App. Reduce bounce rates and increase add-to-cart. Easy to set up, fully branded, and built to guide shoppers to checkout. Fully customizable and designed to enhance the customer journey, Foursixty turns browsers into buyers with visual proof that sells. Supercharge your Shopify store with Foursixty’s social commerce tools. Create shoppable galleries using Instagram, TikTok, UGC, and ambassador content. Showcase real content where it counts on homepages, product pages, email, and the Shop App. Reduce bounce rates and increase add-to-cart. Easy to set up, fully branded, and built to guide shoppers to checkout. Fully customizable and designed to enhance the customer journey, Foursixty turns browsers into buyers with visual proof that sells. more Showcase shoppable galleries in product pages, homepages, and dedicated pages Showcase your army of ambassadors and create dedicated galleries for each one Push Instagram and UGC to your email strategies and abandoned cart campaigns Collect UGC from customers and get the legal rights to feature their content Auto-schedule your Instagram posts and get in depth Instagram platform analytics
Upsell & Cross-sell easily with Bundles, Discounts, Countdowns, & Pop-ups to increase CR & AOV Convert browsers into shoppers, & hesitant customers into heavy spenders. Your customers will stay longer & spend more, boosting conversion rates, sales & AOV. FoxKit offers high-converting upsells - In-cart Upsell, Discounts, & Back-in-stock alerts. Cross-sell with Bundles, Pre-purchase offers, & Related products. Boost more sales using Countdown; Lucky Wheel; Recent Sales Noti; Pre-orders; & Pop-up to collect emails, offer discounts, & announce news; Easy set-up, no code needed! Convert browsers into shoppers, & hesitant customers into heavy spenders. Your customers will stay longer & spend more, boosting conversion rates, sales & AOV. FoxKit offers high-converting upsells - In-cart Upsell, Discounts, & Back-in-stock alerts. Cross-sell with Bundles, Pre-purchase offers, & Related products. Boost more sales using Countdown; Lucky Wheel; Recent Sales Noti; Pre-orders; & Pop-up to collect emails, offer discounts, & announce news; Easy set-up, no code needed! more Popular Upsell features: Bundles, Discounts, & In-cart Offer to boost AOV Effective Cross-sells: Free ship goal, Countdown, Lucky wheel, Back in Stock Extra tools to boost Sales: Size chart, Pre-order, Recent Sales Pop-up, etc. Insightful Analytics of conversion performance, from impressions to sales & AOV 5-star live chat support, weekly updated help docs & video tutorials
Fixed Bundles, Mix and Match Bundles, Build Your Own Box Bundle with Add Ons to boost your AOV We help brands boost AOV with Product Bundles - like Bundle Builder, Build a Box, Multipacks, Fixed Bundles, or Volume Bundles. Create mix and match product bundles or bundle builder with add ons or free Gifts. Build a box or build your own bundle with infinite variants. You also have a wide bundle template options. Seamlessly manage your product bundles inventory. Create simple bundles or easy bundles and get in-depth Analytics into each product bundle. We help brands boost AOV with Product Bundles - like Bundle Builder, Build a Box, Multipacks, Fixed Bundles, or Volume Bundles. Create mix and match product bundles or bundle builder with add ons or free Gifts. Build a box or build your own bundle with infinite variants. You also have a wide bundle template options. Seamlessly manage your product bundles inventory. Create simple bundles or easy bundles and get in-depth Analytics into each product bundle. more Mix and match or Build your box bundle for complex bundling (infinite variants) Easy Order Fulfillment along with Automated Inventory Sync Management Volume Bundle with Quantity Breaks to upsell shoppers Fixed Bundles now supports 30 products in a Bundle Build a Box with Add Ons and Free Gifts Options
Boost sales by showcasing the Best Sellers on your Homepage using an image Slider / Carousel Best sellers generate most of your revenue—make them impossible to miss. FoxSell helps you automatically promote top products on your homepage or collections through customizable sliders and carousels. Choose compact or enlarged product sliders, enable lazy load for faster PageSpeed, and add zoom-on-hover. Fully supports Online Store 2.0, collection sliders, and homepage product carousels, helping you boost sales and showcase products beautifully with responsive image sliders. Best sellers generate most of your revenue—make them impossible to miss. FoxSell helps you automatically promote top products on your homepage or collections through customizable sliders and carousels. Choose compact or enlarged product sliders, enable lazy load for faster PageSpeed, and add zoom-on-hover. Fully supports Online Store 2.0, collection sliders, and homepage product carousels, helping you boost sales and showcase products beautifully with responsive image sliders. more Add a one-click Add to Cart button on any product slider to boost conversions Increase engagement with customizable carousels, sliders, and image slideshows Match your brand look by styling product sliders and carousels to fit your theme Track sales performance from each slider / carousel with the built-in analytics Ensure a smooth experience with fully mobile-optimized product sliders
Increase your store's conversion rate by 20% and increase 27% in sales with visual recommendations AI-powered visual-based product recommendation engine that shows highly relevant result across large amount of SKUs. Increase clickthrough from your marketing emails with showing highly personalized product emails through Klaviyo integrations. Increase sales, conversion rate, clickthrough rate, and ROI. AI-powered visual-based product recommendation engine that shows highly relevant result across large amount of SKUs. Increase clickthrough from your marketing emails with showing highly personalized product emails through Klaviyo integrations. Increase sales, conversion rate, clickthrough rate, and ROI. more AI-powered product recommendations that show highly visually relevant products Style the recommendation module to your liking. Integrate with Klaviyo and send personalized recommendations in emails.
By using this app, you can show a free shipping bar on your store and also set cart value goals. By using this app, you can add a Free Shipping Bar or Promotion Bar on the top of your site header to attract visitors. Its an easy tools to create engagement among site visitors and increase conversions. The Free Shipping bar feature allows you can create goals for cart as per requirement and it will show the remaining amount in the bar as per cart total. You can setup the app easily and update the settings to set your cart goals on which you want to offer Free Shipping to users. By using this app, you can add a Free Shipping Bar or Promotion Bar on the top of your site header to attract visitors. Its an easy tools to create engagement among site visitors and increase conversions. The Free Shipping bar feature allows you can create goals for cart as per requirement and it will show the remaining amount in the bar as per cart total. You can setup the app easily and update the settings to set your cart goals on which you want to offer Free Shipping to users. more Create a freeshipping bar, hello bar, announcement bar or header bar for store Easy to customize and setup on store with lots of customization options in fsb Set a goal as well for the free shipping bar message to attract user attention Promotion bar to add promotional message for visitors of store + social proof Feature rich sticky bar
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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.