Create strong forms easily with in just 3 steps using our easy-to-use SK Contact Form Builder app Using our Form Builder app, you can create basic to complex forms with predefined templates or from scratch. Our app has templates like Contact Us, Booking, Warranty, Wholesale Inquiry Form which compatible with all themes. Change look & feel of the form as you want using custom CSS. Email will let you know from which page form was submitted. We have SMTP & Klaviyo which add user to specific Klaviyo list. Tag user when form submitted, G-Sheet, Conditional Logic, zapier & more-upto 2GB of storage Using our Form Builder app, you can create basic to complex forms with predefined templates or from scratch. Our app has templates like Contact Us, Booking, Warranty, Wholesale Inquiry Form which compatible with all themes. Change look & feel of the form as you want using custom CSS. Email will let you know from which page form was submitted. We have SMTP & Klaviyo which add user to specific Klaviyo list. Tag user when form submitted, G-Sheet, Conditional Logic, zapier & more-upto 2GB of storage more Create forms, collect customer data, and allow file uploads easily. Create forms with predefined templates and manage forms by drag & drop feature. Easy integrations of the Klaviyo, Gtag, FB Tracking, GSheet Add tag in customer. Tag customer when form is submitted. Like: Wholesaler, Retailer, etc. Personalized forms are designed to match your shop's style perfectly.
Custom CSS Shopify Apps
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Discover products instantly: Snap barcode photos to find matches in our Search app. Welcome to the future of shopping with our cutting-edge Search app! Tired of endless scrolling and searching for products? Our revolutionary barcode scanning feature transforms your shopping experience. Simply snap a photo of any barcode, upload it to our app, and watch as we instantly find matching products in your favorite stores. Say goodbye to tedious manual searches and hello to effortless discovery. Embrace convenience and efficiency - try it today and revolutionize your retail experience! Welcome to the future of shopping with our cutting-edge Search app! Tired of endless scrolling and searching for products? Our revolutionary barcode scanning feature transforms your shopping experience. Simply snap a photo of any barcode, upload it to our app, and watch as we instantly find matching products in your favorite stores. Say goodbye to tedious manual searches and hello to effortless discovery. Embrace convenience and efficiency - try it today and revolutionize your retail experience! more Barcode Snap & Search Instant Match Results Seamless Integration
Sell where shoppers decide: bundles and upsells in search, filters, and the cart. AI guides you. Grow AOV with bundles, quantity breaks, BOGO, free gifts, build-your-own-bundle, and upsells, placed where shoppers decide: search, filters, collections, cart, even the thank-you page. Your best offer is no longer stuck on the product page. Pre-order, back in stock, subscriptions, reviews, and wishlist included. No code, and it matches your theme. Then Growth Intelligence watches live signals from your store and tells you what to fix and what it earned. Stop guessing. Start selling. Grow AOV with bundles, quantity breaks, BOGO, free gifts, build-your-own-bundle, and upsells, placed where shoppers decide: search, filters, collections, cart, even the thank-you page. Your best offer is no longer stuck on the product page. Pre-order, back in stock, subscriptions, reviews, and wishlist included. No code, and it matches your theme. Then Growth Intelligence watches live signals from your store and tells you what to fix and what it earned. Stop guessing. Start selling. more Bundles, quantity breaks, BOGO, free gifts, and subscriptions Build your own bundle, pre-order, and back in stock campaigns Growth Intelligence: live signals, what to fix, and what it earned Your offers in search, filters, cart drawer, and the thank-you page Merchandising, reviews, wishlist, and recommendations, no code
Drive sales with animated announcement bars: sticky, scrolling, rotating, sliding, and countdowns Create fully customizable announcement bars to highlight promotions, share updates, and engage visitors across your store. Add countdown timers, rotating messages, and call-to-action buttons—no coding required. Target specific countries, pages, or customer groups, and control when and where each bar appears. Choose from 28 pre-built themes or design your own. With flexible styling, smooth animations, scheduling, and performance insights, it's easy to keep your visitors informed and engaged. Create fully customizable announcement bars to highlight promotions, share updates, and engage visitors across your store. Add countdown timers, rotating messages, and call-to-action buttons—no coding required. Target specific countries, pages, or customer groups, and control when and where each bar appears. Choose from 28 pre-built themes or design your own. With flexible styling, smooth animations, scheduling, and performance insights, it's easy to keep your visitors informed and engaged. more Sticky Announcement Bar: Add a fixed-position promo banner to any store page. Countdown Timer Bar: Create urgency with limited-time countdown timer banners. Scrolling Announcement Bar: Display moving marquee announcement banners easily. Rotating Announcement Bar: Feature multiple sliding promo banners on pages. Geo-Targeted Promo Bar: Easily schedule banners & target visitors by location.
Build hero sections, banner slider, image slider, carousel, gallery, video slider & slideshow easily Build custom sections for your store without code. Create a hero section, hero banner, banner slider, carousel, gallery, image slider, video slider or slideshow, then add text, buttons and animations to each slide. Highlight offers with video banners, product sliders, promo banners and countdown timers. Design landing pages, coming soon, maintenance and 404 pages in the drag & drop editor. Start from ready-made templates and publish multilingual, RTL and mobile-ready sections. Build custom sections for your store without code. Create a hero section, hero banner, banner slider, carousel, gallery, image slider, video slider or slideshow, then add text, buttons and animations to each slide. Highlight offers with video banners, product sliders, promo banners and countdown timers. Design landing pages, coming soon, maintenance and 404 pages in the drag & drop editor. Start from ready-made templates and publish multilingual, RTL and mobile-ready sections. more Build custom sections, hero banners, gallery, banner sliders and image sliders Start from 200+ ready-made templates for carousel, hero sections & landing pages Add YouTube and Vimeo video sliders, video banners and Instagram sliders Reach more shoppers with multilingual, RTL and mobile-ready sections & sliders Works with Online Store 2.0 themes and page builders like PageFly and Shogun
Clickable image & video slider for hero and promos, scheduled automatically. Add a clickable image slider, video slider, or mixed media slideshow, or simple hero slider to your store. Mix images and videos in the same slideshow, each fully clickable and linked to any product or collection. Schedule hero banner and video carousels to publish and expire automatically for sales and launches. Upload separate desktop and mobile images and videos for each slide, control autoplay, layout and styling. Ideal as hero slider or promos! Add a clickable image slider, video slider, or mixed media slideshow, or simple hero slider to your store. Mix images and videos in the same slideshow, each fully clickable and linked to any product or collection. Schedule hero banner and video carousels to publish and expire automatically for sales and launches. Upload separate desktop and mobile images and videos for each slide, control autoplay, layout and styling. Ideal as hero slider or promos! more Clickable Image & Video Sliders: Mix both in one slideshow, fully clickable Scheduled Banner Carousels: Set publication windows for hands-free control Mobile-Optimized Slideshow: Upload separate desktop and mobile media Custom Banner Design Control: Tailor slide rotation speeds and pagination styles
Boost AOV with product bundles, upsells, cross-sells, mix and match, volume discounts and BOGO Let shoppers bundle and save with bundle deals, product bundles, bundle kits, mix and match bundles and fixed bundle prices. Add quantity breaks, volume discounts, tiered pricing, bulk pricing, BOGO, Buy X Get Y and free gifts. Upsell and cross-sell with product add-ons, subscribe and save, a countdown timer, a sticky add to cart bar and a variant picker. Target products, collections, customer tags or cart value. Automatic discounts stack with coupons and discount codes. Fast, no-code setup. Let shoppers bundle and save with bundle deals, product bundles, bundle kits, mix and match bundles and fixed bundle prices. Add quantity breaks, volume discounts, tiered pricing, bulk pricing, BOGO, Buy X Get Y and free gifts. Upsell and cross-sell with product add-ons, subscribe and save, a countdown timer, a sticky add to cart bar and a variant picker. Target products, collections, customer tags or cart value. Automatic discounts stack with coupons and discount codes. Fast, no-code setup. more Product bundles, bundle kits and mix and match bundles with fixed bundle prices Quantity breaks, volume discount tiers and tiered pricing with a variant picker BOGO, Buy X Get Y and free gifts that add to the cart automatically Product page upsell add-ons and cross-sells, subscriptions and a countdown timer Automatic bundle discounts stack with codes and other offers in checkout
Validate checkout, add payment, shipping & discount rules, checkout blocks & post-purchase upsells SMART Checkout Rules helps merchants control the checkout experience using flexible conditions. Validate checkout or hide, block, sort, or rename payment methods and shipping options based on rules like country, customer tag, cart value, product, or discount. Grow AOV with one-click post-purchase upsells and downsells, plus checkout blocks like banners, and discount codes. Ideal for high-risk checkouts, B2B, or international flows without code. Boost conversions with smarter upsells and rules. SMART Checkout Rules helps merchants control the checkout experience using flexible conditions. Validate checkout or hide, block, sort, or rename payment methods and shipping options based on rules like country, customer tag, cart value, product, or discount. Grow AOV with one-click post-purchase upsells and downsells, plus checkout blocks like banners, and discount codes. Ideal for high-risk checkouts, B2B, or international flows without code. Boost conversions with smarter upsells and rules. more Add one-click post-purchase upsells & downsells to boost AOV after checkout Block high-risk orders or COD, PayPal & Credit Card by tag, country, value Hide, block, sort or rename payment & shipping methods by your own rules Show checkout blocks: banners & discount codes, reduce abandoned checkouts Apply checkout validation & discount logic by cart total, tag or delivery method
Help shoppers find what they mean with AI-powered search, smart filters, and instant results Filter products instantly by price, size, color, tag, vendor, brand, collection and metafields, etc. Easy to install and custom your Product filter menu. AI-powered search delivers more relevant results with intelligent synonyms, instant suggestions. Easy integrate with original search bar, theme filter, category filter. Your users are easier to find a right product with sidebar filter, filter collection. More over, you can use the app to display product variants as separate products Filter products instantly by price, size, color, tag, vendor, brand, collection and metafields, etc. Easy to install and custom your Product filter menu. AI-powered search delivers more relevant results with intelligent synonyms, instant suggestions. Easy integrate with original search bar, theme filter, category filter. Your users are easier to find a right product with sidebar filter, filter collection. More over, you can use the app to display product variants as separate products more Smart filter app to custom filter for different collection filter, category. Unlimited filter menu by tag, sale %, review, metafields, variants filter... AI-powered search and discovery solution. Year Make Model search AI semantic search, Full-text search, Auto-suggestion, Search Redirects etc. 9 Product recommendation types. Analytics with filter & search behavior report.
AI-powered personalized search, collection filter, and instant search with advanced analytics. Improve site conversion rates with advanced AI-powered search and collection filters. Return the best-matching products based on data attributes and context-aware analysis. Automatically detect the size, color, pricing, etc. Our app understands customer intent, extracts meaning from queries, and provides a high-quality balance of precision and recall. Our app works with any theme. Improve site conversion rates with advanced AI-powered search and collection filters. Return the best-matching products based on data attributes and context-aware analysis. Automatically detect the size, color, pricing, etc. Our app understands customer intent, extracts meaning from queries, and provides a high-quality balance of precision and recall. Our app works with any theme. more Cutting-edge AI-powered personalized search, collection filter, instant search Rule-based system to boost/bury products, merchandising & visitor segmentation Highly customizable UI & mobile ready solution. Lightning fast! Dynamic filters for collections, vendors, options, tags & metafields Powerful analytics
Provide instant size guidance through an AI fit quiz and size chart designed to improve store sales SmartSize AI Fit & Size Recommender helps shoppers find their perfect size in seconds. With just a few questions, our AI model finds the best fit for every product, even across different brands and all Shopify stores using SmartSize. Returning customers see instant size suggestions. It’s the perfect complement to your size charts, creating a confident shopping experience. SmartSize is optimized for both desktop and mobile. Install in 2 clicks, upload size charts, and go live, no coding required. SmartSize AI Fit & Size Recommender helps shoppers find their perfect size in seconds. With just a few questions, our AI model finds the best fit for every product, even across different brands and all Shopify stores using SmartSize. Returning customers see instant size suggestions. It’s the perfect complement to your size charts, creating a confident shopping experience. SmartSize is optimized for both desktop and mobile. Install in 2 clicks, upload size charts, and go live, no coding required. more AI fit quiz with fast size recommendations using your own size charts Repeat visitors get instant size recommendations without retaking the quiz Fully customizable colors, text, and CSS to match any store brand and theme Built for men and women apparel: shirts, blouses, pants, dresses, jackets & more Works across all products/brands by matching AI predictions to each size chart
Size charts, size guides and a “Find my size” AI size recommender, built in minutes Build size charts, size guides and fit quizzes in minutes with SmartSize AI and a modular editor. Bulk import and export, upload an image or start from templates for men, women, kids and pets. Add tabs, AI translations, unit conversion and international sizing. Turn on "Find my size", an AI fit quiz and size recommender for clothes and shoes. Shoppers answer once and are remembered on every product and visit. Buttons auto-place on any theme, or we set it up. Connect Claude or any AI via MCP. Build size charts, size guides and fit quizzes in minutes with SmartSize AI and a modular editor. Bulk import and export, upload an image or start from templates for men, women, kids and pets. Add tabs, AI translations, unit conversion and international sizing. Turn on "Find my size", an AI fit quiz and size recommender for clothes and shoes. Shoppers answer once and are remembered on every product and visit. Buttons auto-place on any theme, or we set it up. Connect Claude or any AI via MCP. more Size chart templates for men, women, kids, lingerie and pets. Bulk import/export AI builds a size guide from a photo or screenshot of your existing chart “Find my size” AI fit finder: shoppers answer once, get their size everywhere Size charts and size quiz in 25+ languages. AI translation, unit conversion Drag-and-drop size guide blocks. The button places itself, or we set it up
Boost your sales and AoV with personalized & smart product recommendations, bundles, and promotions. Improve sales with smart recommendations, product bundles, and promotions with Lucid. It's easy to use, fast, and customizable, allowing you to bring Amazon-like features to your store and upsell like a pro. Customize the designs to match your store aesthetics and easily add discounts to your product bundles and promoted products for flash sales. Plus, with support for localization, you can upsell across the world. Don't miss out on boosting your sales and offering a personalized experience. Improve sales with smart recommendations, product bundles, and promotions with Lucid. It's easy to use, fast, and customizable, allowing you to bring Amazon-like features to your store and upsell like a pro. Customize the designs to match your store aesthetics and easily add discounts to your product bundles and promoted products for flash sales. Plus, with support for localization, you can upsell across the world. Don't miss out on boosting your sales and offering a personalized experience. more Effortless Setup: Associate, Choose Type, Customize Design to Match Store Design Experience the Power of Variant Options-Controlled Recommendations and Bundles Product Recommendations: Related Products, Shop the Look & Trending Products Product Bundles: Frequently Bought Together, Complementary Products & Discounts Product Promotion: Product Advertising, Flash Sales, Deals & Discounts
Create responsive image and video banner sliders to boost your store’s visuals. Banner Slider is a fantastic app that allows you to upload, customize, and display a series of banners as sliders. We support a variety of sliders, including video sliders and Full-Width mode. Aside from that, you can create and preview multiple sliders, assign a link to each banner image, and save a lot of time with the bulk upload feature. Banner Slider works beautifully on all devices (Desktop, Tablet, Mobile). Banner Slider is a fantastic app that allows you to upload, customize, and display a series of banners as sliders. We support a variety of sliders, including video sliders and Full-Width mode. Aside from that, you can create and preview multiple sliders, assign a link to each banner image, and save a lot of time with the bulk upload feature. Banner Slider works beautifully on all devices (Desktop, Tablet, Mobile). more Create, edit and remove sliders and banners easily. Preview sliders before deciding to show them on front-end. Embedded Code for each slider that you can insert into a liquid file or a page.
Expand any theme with sections, templates, and packages — no code or design skills needed. Most themes limit how much you can customize each page. Smind adds a growing library of sections, templates, and packages that work inside your existing theme editor — no new tools to learn. Start by adding individual sections to any page across your store. When you need to build faster, use full-page templates or apply a Package — a ready-made set of templates that sets up your entire store structure in a few clicks, the same way installing a theme would. Most themes limit how much you can customize each page. Smind adds a growing library of sections, templates, and packages that work inside your existing theme editor — no new tools to learn. Start by adding individual sections to any page across your store. When you need to build faster, use full-page templates or apply a Package — a ready-made set of templates that sets up your entire store structure in a few clicks, the same way installing a theme would. more A large library of sections for every page type, editable in your theme editor Full-page templates to build each store page without starting from scratch Packages: install a complete store layout in a few clicks, like a theme Product blocks: add upsell, bundle, and conversion info to product pages New sections and layouts added weekly — no extra tools or coding needed
Show your products in customers’ lives with photos from Instagram and customers who never post. Build customer photo galleries for your homepage, a dedicated page, or product pages. Curate content from Instagram, or reach customers who never post or leave reviews: share an upload link in a post-purchase email, a message, or a QR code, and they upload photos and videos without an account. You choose what to publish. Tag products so shoppers can explore the items in each photo. Choose a portrait carousel, horizontal carousel, or scrolling grid, with separate desktop and mobile layouts. Build customer photo galleries for your homepage, a dedicated page, or product pages. Curate content from Instagram, or reach customers who never post or leave reviews: share an upload link in a post-purchase email, a message, or a QR code, and they upload photos and videos without an account. You choose what to publish. Tag products so shoppers can explore the items in each photo. Choose a portrait carousel, horizontal carousel, or scrolling grid, with separate desktop and mobile layouts. more Collect customer photos and videos with an upload link, no account needed Curate any public Instagram post by link, plus your posts, tags, and mentions Tag products to make photos shoppable and fill product-page galleries Choose a portrait carousel, horizontal carousel, or infinite-scrolling grid Set separate desktop and mobile layouts, fonts, colors, and spacing
Turn TikTok & Instagram Feeds into shoppable videos that drive BFCM sales. Build trust and loyalty. Socialwidget (Instafeed PRO) - Display Instagram content — photos, videos & carousels on your store, converting social media posts into engaging product showcases. Socialwidget empowers you to create shoppable Instagram feeds that allow customers to shop directly from your posts, maximizing sales opportunities. Easily match your brand with custom social media feeds using our ready-made templates, optimized for all devices. Build trust, credibility, and smooth shopping experiences! Socialwidget (Instafeed PRO) - Display Instagram content — photos, videos & carousels on your store, converting social media posts into engaging product showcases. Socialwidget empowers you to create shoppable Instagram feeds that allow customers to shop directly from your posts, maximizing sales opportunities. Easily match your brand with custom social media feeds using our ready-made templates, optimized for all devices. Build trust, credibility, and smooth shopping experiences! more Create Instagram feeds on your website to increase social proof and engagement Tag products in Instagram media to make them shoppable on your store Show social media posts (photos & videos) with eye-catching layouts Sort posts from Instagram hashtags and public accounts to easily organize feeds Automatically drive fresh new content with auto-updating posts & videos
Boost sales with AI search, smart filters & analytics that reveal what shoppers can't find. Sparq replaces Shopify's default search with AI-powered instant search and advanced product filters. Shoppers get accurate results even with typos via spell check, synonyms, and smart suggestions. Add unlimited filters by tag, metafield, variant, price, discount, and location, styled to match any theme on desktop and mobile. Search analytics reveal what customers search for but can't find, so you can fix gaps and recover lost sales. Trusted by World Bank Group, Steve Madden, and Pandora. Sparq replaces Shopify's default search with AI-powered instant search and advanced product filters. Shoppers get accurate results even with typos via spell check, synonyms, and smart suggestions. Add unlimited filters by tag, metafield, variant, price, discount, and location, styled to match any theme on desktop and mobile. Search analytics reveal what customers search for but can't find, so you can fix gaps and recover lost sales. Trusted by World Bank Group, Steve Madden, and Pandora. more AI instant search with typo tolerance, synonyms, suggestions & redirects Unlimited filters by tag, metafield, variant, price, discount & location Search analytics reveal what shoppers search for but can't find No-code setup, all themes supported, optimized for mobile & desktop 24/6 live chat support with free setup and filter design help
Improve conversion rates with monthly payment white label on-site messaging. As Splitit is completely different to all other buy now, pay later providers, it’s important to communicate to your shoppers that they can pay in installments, while they are still browsing your site. Flexible payment options can be the difference, and our white-label On-site messaging app integrates seamlessly across your site, offering tailored messages, transparent pricing, and banners. Leverage white-label customization for a stronger brand presence. As Splitit is completely different to all other buy now, pay later providers, it’s important to communicate to your shoppers that they can pay in installments, while they are still browsing your site. Flexible payment options can be the difference, and our white-label On-site messaging app integrates seamlessly across your site, offering tailored messages, transparent pricing, and banners. Leverage white-label customization for a stronger brand presence. more With our app you can let your shoppers know they can pay with installments. Communicate the benefits of paying over time throughout your customers journey. Control the look and feel of the app to match your brand
Product color swatches help customers choose the correct product. Using the Product color swatches app you can easily create multiple groups with different colors and custom images. Product swatches can be a single-color, two-color, product image, custom image, and pill text. App swatches group instantly loads on the product page and doesn’t slow down your product page. The app works with all types of themes. Using the Product color swatches app you can easily create multiple groups with different colors and custom images. Product swatches can be a single-color, two-color, product image, custom image, and pill text. App swatches group instantly loads on the product page and doesn’t slow down your product page. The app works with all types of themes. more Mange group with multiple product style swatches. Create single-color, two-color, custom image, product image, or pill swatches. Customize swatch label, out-of-stock, shape, and button style in appearance.
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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.