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
Custom CSS Shopify Apps
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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
Increase Sales: Slide Cart with One-Click Upsell, Free Shipping w Gift Offers, & Automated Discounts Turn every cart into a bigger order automatically. 1-time setup. Flex Upsell Cart helps you boost sales by showing smart upsells, cross-sells, and special offers directly inside the cart, without disrupting checkout. Easy to set up, works with any Shopify store. ✅ One-Click Upsells & Cross-Sells: Recommend extra products while customers review their cart. ✅ Free Shipping Progress Bar: Motivate bigger orders by showing how much more to spend for free shipping. ✅ Free Gifts & Cart-Only Discounts Turn every cart into a bigger order automatically. 1-time setup. Flex Upsell Cart helps you boost sales by showing smart upsells, cross-sells, and special offers directly inside the cart, without disrupting checkout. Easy to set up, works with any Shopify store. ✅ One-Click Upsells & Cross-Sells: Recommend extra products while customers review their cart. ✅ Free Shipping Progress Bar: Motivate bigger orders by showing how much more to spend for free shipping. ✅ Free Gifts & Cart-Only Discounts more Boost AOV with a progress bar for tiered free shipping, gifts, and discounts Display smart product recommendations and cross-sells based on cart products Increase sales using data, targeted upsell and cross-sell cart add-ons Customize the cart drawer UI to seamlessly match your brand without any code Track performance and optimize conversion rates with advanced cart analytics
Run sales, countdowns and free shipping offers in an announcement bar, and sell bundles from it. Shoppers miss offers they can't see. FlexiBar adds an announcement bar to the top or bottom of your store for sales, flash sale countdowns, free shipping messages and coupon codes. Pick a single bar, a scrolling marquee or a slider, and make it sticky so it stays in view. The Selling Bar opens a bundle when tapped: quantity discounts or build-your-own, added to cart in one tap. Schedule bars, target them by page, country and device, and let AI write and translate the text. Shoppers miss offers they can't see. FlexiBar adds an announcement bar to the top or bottom of your store for sales, flash sale countdowns, free shipping messages and coupon codes. Pick a single bar, a scrolling marquee or a slider, and make it sticky so it stays in view. The Selling Bar opens a bundle when tapped: quantity discounts or build-your-own, added to cart in one tap. Schedule bars, target them by page, country and device, and let AI write and translate the text. more Announcement bar, scrolling marquee and slider with sticky top or bottom bars Countdown timer bar for flash sales, plus coupon codes and CTA buttons Selling Bar: open a bundle from the bar, add to cart in one tap Schedule bars, target by page, country and device, and track views and clicks AI writes your bar text and translates it into 60+ languages
Manage cookie banners, form consents and Plus checkout consents in one app. Manage cookie consent for GDPR and US privacy laws with branded banners in 57 languages. Connect Google Consent Mode v2 and Shopify Customer Privacy, with IAB TCF 2.4 and GPP support. Scan cookies, auto-block trackers and publish cookie declarations. Collect form consents with versioned receipts and optional checkout consents on Shopify Plus. Export logs, look up and erase consent records, and view consent rates by region and source. A/B test banner text. Manage cookie consent for GDPR and US privacy laws with branded banners in 57 languages. Connect Google Consent Mode v2 and Shopify Customer Privacy, with IAB TCF 2.4 and GPP support. Scan cookies, auto-block trackers and publish cookie declarations. Collect form consents with versioned receipts and optional checkout consents on Shopify Plus. Export logs, look up and erase consent records, and view consent rates by region and source. A/B test banner text. more Customize regional cookie banners in 57 languages and A/B test banner text Use Google Consent Mode v2, Shopify Customer Privacy, IAB TCF 2.4 and GPP Scan cookies, auto-block trackers and publish cookie declarations Collect form consents with receipts and checkout consents on Shopify Plus View consent reports; look up, export and erase consent records
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
Show your Instagram feed, Stories, Highlights & Reels on your store. Auto-updates with every post. Connect your Instagram account once, and your store updates automatically every time you post. Display your Instagram feed as a grid or slider, bring Instagram Stories and Highlights circles to your homepage, and embed your latest Reels to show your brand in action. Every layout is mobile-friendly and adapts to all screen sizes. No coding required: add it to your theme in a few clicks from the theme editor, and customize the layout to match your store. Connect your Instagram account once, and your store updates automatically every time you post. Display your Instagram feed as a grid or slider, bring Instagram Stories and Highlights circles to your homepage, and embed your latest Reels to show your brand in action. Every layout is mobile-friendly and adapts to all screen sizes. No coding required: add it to your theme in a few clicks from the theme editor, and customize the layout to match your store. more Instagram feed as a grid or slider that updates automatically Instagram Stories and Highlights circles on your store Embed your latest Instagram Reels Mobile-optimized for every screen size No coding: add it from your theme editor in a few clicks
Turn your posts into a shoppable gallery in your store and tag products so shoppers can buy them. Add a shoppable Instagram feed to your store with Instafeed. Display your Instagram posts, Stories and Highlights automatically, and tag products so shoppers can buy straight from a post. Pick a grid, carousel, collage or spotlight layout and customise it to match your theme, no code needed. Create a shoppable link in bio page and turn product photos into new posts with AI Studio. Instafeed only shows your posts, it never posts for you. Our friendly support team is always ready to help. Add a shoppable Instagram feed to your store with Instafeed. Display your Instagram posts, Stories and Highlights automatically, and tag products so shoppers can buy straight from a post. Pick a grid, carousel, collage or spotlight layout and customise it to match your theme, no code needed. Create a shoppable link in bio page and turn product photos into new posts with AI Studio. Instafeed only shows your posts, it never posts for you. Our friendly support team is always ready to help. more Show Instagram posts, stories and highlights that update automatically Tag products on posts and stories so shoppers can buy right from the feed Choose grid, carousel, collage, spotlight and more, then style it, no code Create a shoppable link-in-bio page with your posts, products and links Turn product photos into on-brand Instagram shots and captions with AI
Maximize AOV with AI powered upsells & Frequently Bought Together Every visitor leaving with one item is a missed opportunity. Fly Bundles plugs profit leaks with high-conversion product bundle kits and combos. Use bulk discounting or a Fixed Bundle to turn tiny carts into massive orders. Our bundle upsell engine, FBT blocks, and quick add-ons make buying more the natural choice. Scale with Quantity Breaks, subscriptions, and progressive free gifts. Zero coding and 24/7 support ensure you never leave money on the table again. Every visitor leaving with one item is a missed opportunity. Fly Bundles plugs profit leaks with high-conversion product bundle kits and combos. Use bulk discounting or a Fixed Bundle to turn tiny carts into massive orders. Our bundle upsell engine, FBT blocks, and quick add-ons make buying more the natural choice. Scale with Quantity Breaks, subscriptions, and progressive free gifts. Zero coding and 24/7 support ensure you never leave money on the table again. more Boost cart value with a Fixed Bundle, BOGO or Frequently Bought Together blocks. Drive bulk sales with tiered Quantity Break and Volume Discount triggers. Incentivize larger carts with a Free Gift and automated bundle upsell tools. Build well integrated, beautiful native widgets with zero impact on store speed Breakdown of bundles for auto discounting, inventory sync, fulfilment, & return
Drive AOV and sales with dynamic free shipping messages and upsells for larger orders Install Fly: Free shipping bar in 2 minutes! Use a mobile responsive announcement bar as a powerful cart upsell to multiply sales. As shoppers browse, our dynamic progress bar motivates them to add more items to unlock delivery. Fully customize the banner position, backgrounds, color and font, or use custom CSS. Target global buyers with multi-currency and multi-language support. Maximize your promotional events using scheduling and a sticky display. Incentivize larger orders right now. Install Fly: Free shipping bar in 2 minutes! Use a mobile responsive announcement bar as a powerful cart upsell to multiply sales. As shoppers browse, our dynamic progress bar motivates them to add more items to unlock delivery. Fully customize the banner position, backgrounds, color and font, or use custom CSS. Target global buyers with multi-currency and multi-language support. Maximize your promotional events using scheduling and a sticky display. Incentivize larger orders right now. more Showcase offers via free shipping progress bar messages Easy styling customizable for every shipping state Target all pages with shipping messaging Automatically convert to visitor's currency Schedule the display of the bar based on your event strategy
App provides Upsell based Cart Drawer | Popup | Progress Shipping bar | Halloween Theme |Agree Terms "Flying Cart Slide Drawer" Replaces traditional cart pages with a side-sliding drawer or popup with your cart items and keeping shoppers on the same page. 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" Replaces traditional cart pages with a side-sliding drawer or popup with your cart items and keeping shoppers on the same page. 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 Creates a customizable Slide Cart designed to increase average order value (AOV) 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
Surprise customers and drive sales with automatically added gifts & products! Boost your Average Order Value (AOV) with auto add gift to cart, free products, gift with purchase, automatic free gifts. Automatically add product to cart based on cart value, products, tags, collections, and other triggers. Run personalised promotions by customer segments, geolocation, and total spend. Customise widgets like popups, sticky bars, and banners. Track performance with advanced analytics to optimise your store’s sales strategy. Boost your Average Order Value (AOV) with auto add gift to cart, free products, gift with purchase, automatic free gifts. Automatically add product to cart based on cart value, products, tags, collections, and other triggers. Run personalised promotions by customer segments, geolocation, and total spend. Customise widgets like popups, sticky bars, and banners. Track performance with advanced analytics to optimise your store’s sales strategy. more Auto add gift to cart by cart total, quantity, product, collection, tag and more Free gift with purchase: set the gift or let the customer choose it in cart Hidden offers via secret link for influencers, social media ads, VIP customers Popup, banner, and sticky bar widgets show progress to the next free gift Analytics on impressions, gift adoption, and orders to see what lifts AOV
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
AI form builder with file upload for contact forms, order forms, survey forms, B2B wholesale forms FormCRM helps build professional-looking custom forms with an advanced AI Shopify form builder. Create multilingual, multi-step forms, newsletter pop-up forms, warranty forms, wholesale inquiry forms, survey & order forms, lead forms, registration forms, product forms, or contact form builder with file upload option; our powerful form app has you covered. Collect form data, Google reCAPTCHA, get email, send form auto-response, sync forms with Google Sheets, Mailchimp, Klaviyo, Zapier. FormCRM helps build professional-looking custom forms with an advanced AI Shopify form builder. Create multilingual, multi-step forms, newsletter pop-up forms, warranty forms, wholesale inquiry forms, survey & order forms, lead forms, registration forms, product forms, or contact form builder with file upload option; our powerful form app has you covered. Collect form data, Google reCAPTCHA, get email, send form auto-response, sync forms with Google Sheets, Mailchimp, Klaviyo, Zapier. more Build customer registration form, contact form, wholesale form & any custom form Create forms using a easy drag-and-drop interface with image/file uploads option Auto popup form, multistep forms with multilingual support and conditional logic Enable auto-response, admin email notifications, submission limit, lock forms Integrate with Shopify customers, Flow, Mailchimp, Klaviyo, HubSpot, Slack, Zoho
Build any form your store needs, without code. Collect unlimited submissions on the free plan. Formester builds contact, file upload, registration, quote, order and wholesale forms in a drag-and-drop editor, then embeds them in any theme section as an inline form or a button-triggered popup. The free plan carries unlimited forms and submissions. Conditional logic shows and hides fields, calculation fields price a job, and multi-step pages keep long forms short. Submissions arrive by email and sync to Google Sheets, Slack, HubSpot and Zapier. reCAPTCHA and Turnstile block spam. Formester builds contact, file upload, registration, quote, order and wholesale forms in a drag-and-drop editor, then embeds them in any theme section as an inline form or a button-triggered popup. The free plan carries unlimited forms and submissions. Conditional logic shows and hides fields, calculation fields price a job, and multi-step pages keep long forms short. Submissions arrive by email and sync to Google Sheets, Slack, HubSpot and Zapier. reCAPTCHA and Turnstile block spam. more Unlimited forms and unlimited submissions on the free plan. Order and quote forms with a product picker, live totals and stock limits. Take payment or a deposit with Stripe, PayPal or Authorize.net. File uploads, e-signature, appointments, and forms in any language. Embed inline or as a popup in any theme section, no code.
Build multi-language forms with AI and use file uploads, captcha, customer sync and B2B automation Create any form with the drag & drop builder or let the AI assistant build, edit and translate it in chat. Build multi-step forms with conditional logic: warranty claims, product registration, customer and B2B registration. Sync submissions to customer profiles with email, SMS and WhatsApp marketing consent, create B2B companies and fill metafields. Protect forms with captcha. Every form is WCAG accessible, translated and auto-styled to match your theme. All data is hosted on servers in the EU. Create any form with the drag & drop builder or let the AI assistant build, edit and translate it in chat. Build multi-step forms with conditional logic: warranty claims, product registration, customer and B2B registration. Sync submissions to customer profiles with email, SMS and WhatsApp marketing consent, create B2B companies and fill metafields. Protect forms with captcha. Every form is WCAG accessible, translated and auto-styled to match your theme. All data is hosted on servers in the EU. more AI assistant – create, edit and translate your forms by chatting Automate – create customers & B2B companies, sync marketing consent & metafields Multi-language – translate forms and emails into all languages of your shop EU hosting and spam protection with captcha Powerful fields – uploads, phone, datepicker, multi-step and conditional logic
「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
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
Boost AOV with product bundles, cart upsells, volume discounts, related products, sales noti & more FoxKit is an upsell and cross-sell app that helps increase AOV and store revenue. Add product bundles with volume discounts, cart upsells at checkout, and cross-sell recommendations for related products. Use countdown timer to create urgency and free shipping bar to motivate purchases. Increase store conversion rates & reduce buying hesitation with pop-ups, pre-orders, size charts, sales notifications, lucky wheel, and mega menu features. 24/7 support through email and live chat is available. FoxKit is an upsell and cross-sell app that helps increase AOV and store revenue. Add product bundles with volume discounts, cart upsells at checkout, and cross-sell recommendations for related products. Use countdown timer to create urgency and free shipping bar to motivate purchases. Increase store conversion rates & reduce buying hesitation with pop-ups, pre-orders, size charts, sales notifications, lucky wheel, and mega menu features. 24/7 support through email and live chat is available. more Product bundles, free shipping bar & quantity discounts to increase cart size. Upsell and cross-sell recommendations on product pages, cart, and post-purchase. In-cart upsells display relevant products right before customers check out. Countdown timer, cart countdown, sales noti & stock scarcity to create urgency. Pop-ups, pre-orders, lucky wheel, size charts & mega menu to boost conversion.
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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.