Boost conversions with countdown bars, cart timers, stock urgency & sale pop up. Sami Countdown Timer helps you create urgency across product pages, cart pages, landing pages, and promotional banners. Drive faster purchase decisions with countdown bars, product timers, stock countdowns, cart countdowns, and estimated delivery timers. Run flash sales, product launches, daily deals, and limited-time campaigns with fixed, recurring, scheduled, and session-based timers. Customize text, fonts, colors, CSS, animation, and placement to match your brand and store design. Sami Countdown Timer helps you create urgency across product pages, cart pages, landing pages, and promotional banners. Drive faster purchase decisions with countdown bars, product timers, stock countdowns, cart countdowns, and estimated delivery timers. Run flash sales, product launches, daily deals, and limited-time campaigns with fixed, recurring, scheduled, and session-based timers. Customize text, fonts, colors, CSS, animation, and placement to match your brand and store design. more Add countdown bars, cart timers, stock alerts, and delivery timers Run fixed, recurring, scheduled, or session-based promotions Show urgency on product pages, cart pages, and landing pages Customize design, text, colors, fonts, CSS, and timer placement Build trust with sale pop-up
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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Easily curate shoppable and customizable user-generated Instagram feed and Photo Reviews galleries Covet helps you collect and show photo & video reviews from your customers. Automate & display Instagram @profile or #hashtag photos, videos & reels. Invite your customers to upload their own photo & video reviews. Run email campaigns and monitor which buyers have uploaded media. Approve their reviews for the gallery and reward them with a discount. Upload your own photos to showcase your seasonal lookbook. Run photo contests and create a community around your brand. Covet helps you collect and show photo & video reviews from your customers. Automate & display Instagram @profile or #hashtag photos, videos & reels. Invite your customers to upload their own photo & video reviews. Run email campaigns and monitor which buyers have uploaded media. Approve their reviews for the gallery and reward them with a discount. Upload your own photos to showcase your seasonal lookbook. Run photo contests and create a community around your brand. more Automate & display Instagram feed: @profile or #hashtag photos, video & reels Photo Reviews - invite your customers to upload their own photos or videos Shoppable Gallery - allow users to browse and shop right inside the gallery Lookbook - use all the magnificent photos to curate & show your product photos Product Gallery - show your product photos in aspirational, real-life action
Showcase galleries of images in an appealing way to make your store look aesthetic. We are here to enhance your stores with our Image Gallery App. Create astonishing galleries with ease. The built-in editor provides a treasure of editing options. We know that having high-quality images is important, hence we support 4K and 8K images and optimize them to make the pictures load as quickly as possible. As we understand your time is valuable, we have provided an auto-embed feature to publish the gallery using the app on any page already created on your store. We are here to enhance your stores with our Image Gallery App. Create astonishing galleries with ease. The built-in editor provides a treasure of editing options. We know that having high-quality images is important, hence we support 4K and 8K images and optimize them to make the pictures load as quickly as possible. As we understand your time is valuable, we have provided an auto-embed feature to publish the gallery using the app on any page already created on your store. more Customize gallery layout as per your choice within the app. Create unlimited Grid, Masonry & Carousel galleries. Add lightbox/Popup view, Links, Captions & Hover effects to your images Embed anywhere just with an HTML embed snippet. Easily organize images in the gallery using Manual or Automatic Sorting.
Easily create registration, wholesale, feedback & any custom forms with file uploads by drag & drop. CP24 Form Builder & File Upload provides the solution to create beautiful forms with file attachments to fulfill different purposes. CP24 - Form Builder app helps you to build a fully responsive, user-friendly, spectacular, and professional contact form in a short span of time. You can create different category forms like Registration, Wholesale Registration, Steps, Order Attachment, Quiz Form, Product Feedback Form, and many more with ease. & Integration with Klaviyo. CP24 Form Builder & File Upload provides the solution to create beautiful forms with file attachments to fulfill different purposes. CP24 - Form Builder app helps you to build a fully responsive, user-friendly, spectacular, and professional contact form in a short span of time. You can create different category forms like Registration, Wholesale Registration, Steps, Order Attachment, Quiz Form, Product Feedback Form, and many more with ease. & Integration with Klaviyo. more Create registration, order attachments, and wholesale forms with file uploads. Set admin notification with file attachment, and customer autoresponder. Captcha support to prevent bots & all device supported forms. Klaviyo integration: Sync form submission with Klaviyo.
Sell custom built products with unlimited option permutations, conditional logic, text & artwork The most powerful customization platform - complete ecosystem. Easy to use interface + AI assistant. Live preview usually drives 30%-50% higher order value. Unmatched features: Text, images, colors, conditional logic, bundles, inventory tracking, price formulas etc. - all in one platform. Integrates with any ERP System. Perfect for jewelry, hardware, sports equipment, apparel, phone cases, home decoration. No risk. 24/7 support. Scalable infrastructure on Google Cloud. The most powerful customization platform - complete ecosystem. Easy to use interface + AI assistant. Live preview usually drives 30%-50% higher order value. Unmatched features: Text, images, colors, conditional logic, bundles, inventory tracking, price formulas etc. - all in one platform. Integrates with any ERP System. Perfect for jewelry, hardware, sports equipment, apparel, phone cases, home decoration. No risk. 24/7 support. Scalable infrastructure on Google Cloud. more Offer 'Build Your Own Product' Experience w/ Live Preview From Every Angle. Upload Photos / Artwork / Logos / Monograms / Text & Almost Any Other File Type. Unlimited Variant Permutations. Robust SKU Constructor & Inventory Tracking. Interactive Printable Areas For Embroidery, Print On Demand & Neon Signs. Customizable via CSS/JS to Match Brand Design. API For External Systems.
Let shoppers compare products side by side so they choose faster and buy with confidence. CRO Agent Compare helps shoppers choose faster with side-by-side product comparisons. It automatically scans your product details and metafields so you can select what to show, no manual data entry required. Reorder fields to match how customers decide, then publish a clean comparison experience on your storefront. Track comparison activity and see which comparisons lead to conversions, so you can optimize what you highlight and how you position products. CRO Agent Compare helps shoppers choose faster with side-by-side product comparisons. It automatically scans your product details and metafields so you can select what to show, no manual data entry required. Reorder fields to match how customers decide, then publish a clean comparison experience on your storefront. Track comparison activity and see which comparisons lead to conversions, so you can optimize what you highlight and how you position products. more Auto-scan product details and metafields, no manual setup Choose which fields to show in your comparison table Track comparison activity and conversions influenced by comparisons Add side-by-side product comparison on your storefront Reorder comparison fields to match how customers decide
Showcase recommended products to customers and they are more likely to buy and increase sales. Our app shows the total clicks on recommended products and also shows the detailed report of total cart revenue. Now you can see the total orders generated by our app. You can pick products by yourself to create cross - sell or upsell for. You can decide which products you want to display as recommended / related products for a particular product. Our app shows the total clicks on recommended products and also shows the detailed report of total cart revenue. Now you can see the total orders generated by our app. You can pick products by yourself to create cross - sell or upsell for. You can decide which products you want to display as recommended / related products for a particular product. more Create cross-sells for products and cart page to engage customers Easily customize the look and feel to match your theme directly inside the app Easy setup - directly from theme editor for 2.0 themes
Create Upsell & cross-sell bundles with discounts to achieve higher sales Cross-sell upsell master offers a wide range of widgets to the customer in which different bundles/funnels can be created with discounts and special offers like percentage discounts or fixed off from the total product prices. The app offers multiple ways like bundle offers, volume discounts, and frequently bought-together offers of the products in simultaneous ways. Also, the app offers some special discounts for a selected group of products to generate higher sales. Cross-sell upsell master offers a wide range of widgets to the customer in which different bundles/funnels can be created with discounts and special offers like percentage discounts or fixed off from the total product prices. The app offers multiple ways like bundle offers, volume discounts, and frequently bought-together offers of the products in simultaneous ways. Also, the app offers some special discounts for a selected group of products to generate higher sales. more Multiple upsell & cross-sell discount bundles can be created on different pages Create bulk quantity discounts, upsell frequently brought together products Fully customizable template to match store color theme
Stop size returns. Size charts, a fit finder and virtual try-on help shoppers find their fit. Wrong sizes mean returns, exchanges and "which size am I?" emails. Clean Size Charts gives fashion and apparel shoppers the answer on the product page: size charts, a fit finder that recommends their size, fit notes on how each item fits, and virtual try-on that shows your products on a photo of themselves. Create charts in one click from your product data or from templates, in bulk, with unit conversion and translations. Switching apps? We'll migrate your charts for free. Wrong sizes mean returns, exchanges and "which size am I?" emails. Clean Size Charts gives fashion and apparel shoppers the answer on the product page: size charts, a fit finder that recommends their size, fit notes on how each item fits, and virtual try-on that shows your products on a photo of themselves. Create charts in one click from your product data or from templates, in bulk, with unit conversion and translations. Switching apps? We'll migrate your charts for free. more AI size recommendations – Help shoppers find their fit, reduce returns One-click chart generation – AI builds charts from your product data 18 ready templates – Shirts, pants, dresses, shoes, rings & more Auto-assign to products – Rules by collection, vendor, or type Virtual try-on – Shoppers see your products on a photo of themselves
Build Unlimited Forms with ease and hassle-free. No limits and no restrictions on using any feature. * Fully Customize the fields and the look and feel * Can store form submissions in App or email or both. * Setup email recipients for form submissions * Set optional Auto-Responders for all of your forms * Mobile responsive. * Enable Captcha to prevent fraudulent form submissions. * Use SMTP to send all emails. * Mailchimp Integration * Accept Payments with Stripe and PayPal. * Google Analytics * Webhooks * Export Form Submissions in an excel sheet. * Customize redirect URL after form submission * Fully Customize the fields and the look and feel * Can store form submissions in App or email or both. * Setup email recipients for form submissions * Set optional Auto-Responders for all of your forms * Mobile responsive. * Enable Captcha to prevent fraudulent form submissions. * Use SMTP to send all emails. * Mailchimp Integration * Accept Payments with Stripe and PayPal. * Google Analytics * Webhooks * Export Form Submissions in an excel sheet. * Customize redirect URL after form submission more We help you to save your time in building a custom and advanced form in minutes. Embed form anywhere by short code. Email alerts to admin and customer on form submissions.
Product customizer that makes it easy for Print on Demand stores to sell personalized products. Customall is the ultimate product personalizer for Print on Demand (POD) store, designed to maximize efficiency & boost sales. With Customall, you can easily set up custom products, offering a wide range of personalization options for your customers. Our app connects with leading Print partners like Dreamship, Printify, Printway, Printful, Gearment to automate fulfillment. Plus, real-time previews ensure that your personalized products convert easily with less return. Customall is the ultimate product personalizer for Print on Demand (POD) store, designed to maximize efficiency & boost sales. With Customall, you can easily set up custom products, offering a wide range of personalization options for your customers. Our app connects with leading Print partners like Dreamship, Printify, Printway, Printful, Gearment to automate fulfillment. Plus, real-time previews ensure that your personalized products convert easily with less return. more Personalization options: custom texts, custom photo upload, clipart... Support text effects, background remover, face cutout... Create products with QR codes, star maps, calendars, and puzzle generators Let customers see design changes in real-time preview before they add to cart Automatically generate high-resolution files for manual or auto-fulfillment.
Powerful POD designer and online customization features for your personalized products. CustoMeow is an online customization tool built for personalized products. Seamlessly integrate the POD Designer into your store, Deliver a true personalized customization experience for your customers, Ensure your personalized orders are fulfilled easily and reliably. CustoMeow is an online customization tool built for personalized products. Seamlessly integrate the POD Designer into your store, Deliver a true personalized customization experience for your customers, Ensure your personalized orders are fulfilled easily and reliably. more True WYSIWYG with 2D, 3D, and high-fidelity mockup previews. Powerful features for apparel, gifts, and more—meeting all customization needs. AI image filters integration unlocks endless creative possibilities. Auto-generated production files sent to factories for maximum efficiency. 10+ years in personalization, always improving to meet your needs.
No-code A/B Testing and Website Personalization CRO platform built for marketers CustomFit.ai is an easy no-code platform for marketers for A/B testing, personalization, and popups. Easily run A/B tests on any page—product pages, home page, checkout page—to identify what drives the most sales. Beyond modifying existing content, you can add new content blocks with drag-and-drop simplicity, such as UGC video reels, recently viewed or purchased items, and more. Leverage AI Machine Learning to optimize conversion rates (CRO), boost revenue, and enhance upselling strategies CustomFit.ai is an easy no-code platform for marketers for A/B testing, personalization, and popups. Easily run A/B tests on any page—product pages, home page, checkout page—to identify what drives the most sales. Beyond modifying existing content, you can add new content blocks with drag-and-drop simplicity, such as UGC video reels, recently viewed or purchased items, and more. Leverage AI Machine Learning to optimize conversion rates (CRO), boost revenue, and enhance upselling strategies more AI Conversion Optimization: Leverage Machine Learning to optimize conversions No code, A/B Testing, Split URL testing, Theme A/B testing, and A/B/N testing Easy to use No code visual editor to personalize product pages & landing pages Add new blocks like Video Reels, Recently Viewed items, and more via drag-n-drop SEO-friendly with fast performance and a flicker-free experience.
All-in-One Personalizer & Customizer with Live Previews & Auto Fulfillment for Any Kind of Store! Sell customized products with Customily, a high-converting product personalizer and customizer for ecommerce. Works for print on demand, engraved jewelry, custom apparel, personalized gifts, laser-cut items, and beyond. Let shoppers customize and personalize products in real time using text, photos, calendars, AI filters, and more, with live preview customization they will trust and love. Automatically customize orders, generate print-ready files, and scale customization with top POD providers. Sell customized products with Customily, a high-converting product personalizer and customizer for ecommerce. Works for print on demand, engraved jewelry, custom apparel, personalized gifts, laser-cut items, and beyond. Let shoppers customize and personalize products in real time using text, photos, calendars, AI filters, and more, with live preview customization they will trust and love. Automatically customize orders, generate print-ready files, and scale customization with top POD providers. more Customize with Texts, Photos, Street/Star Maps, Calendars, AI FILTERS & more! Clipart, Designs, Background Removal, FaceCut, Import from CANVA. All included. Export ready-to-print, engrave or laser-cut files! No extra manual work needed! Connect with different Print-on-Demand (POD) providers to AUTOMATE FULFILLMENT Multi-language support team with LIVE CHAT, onboarding calls & training included
Easily create SEO-Friendly FAQ, product FAQ, FAQ Accordions pages with AI & 12+ nice templates Note: If the FAQ demo store asks you for a storefront password, please enter "123". FAQ Page - Product FAQs app by DDSHOPAPPS allows customers to look for common inquiries, questions with answers on the Knowledge Base and FAQ lists. Admins can create their own informative SEO-friendly FAQ page with all the necessary features. Try our FAQs application to see why it is useful to you and trusted by merchants. Note: If the FAQ demo store asks you for a storefront password, please enter "123". FAQ Page - Product FAQs app by DDSHOPAPPS allows customers to look for common inquiries, questions with answers on the Knowledge Base and FAQ lists. Admins can create their own informative SEO-friendly FAQ page with all the necessary features. Try our FAQs application to see why it is useful to you and trusted by merchants. more Show FAQs anywhere: Add FAQs to any page, section, product, collection Generate FAQs with AI 12+ Nice FAQ Page Templates: Easy to change various FAQ page templates Multi-language FAQs, multiple main FAQ pages Support Google FAQ Schema: FAQs rich results are available, good for SEO
Goodbye to confusion! Provide delivery date picker, store pickup and localisation for fresh success Struggling with wrong delivery dates, missed delivery times, or manual delivery requests? DingDoong offers flexible scheduling for local delivery slots, store pickup, shipping, tailored to your business hours. With localization features, easily integrate delivery dates & times into your cart, drawer, or product page to boost sales, cut support cost. Trusted by bakeries, florists, caterers, fresh food, and delivery-based services, DingDoong ensures a seamless experience while optimizing operation Struggling with wrong delivery dates, missed delivery times, or manual delivery requests? DingDoong offers flexible scheduling for local delivery slots, store pickup, shipping, tailored to your business hours. With localization features, easily integrate delivery dates & times into your cart, drawer, or product page to boost sales, cut support cost. Trusted by bakeries, florists, caterers, fresh food, and delivery-based services, DingDoong ensures a seamless experience while optimizing operation more Add location-wise scheduled delivery dates or pickup time. Limit orders per day Set flexible cut-off for same day or pre-order local delivery date, food & drink Set lead time by business hours for local delivery, shipping, and store pickup. Manage local delivery by ZIP codes or maximum distance radius with date & time Seamless confirmation from cart to checkout & language translation date picker
Boost sales with Instant Buy, Product Bundle, Buy X Get Y, free shipping bar, Trust Badges & popups High-conversion one click upsell & post purchase upsell app. Bundle frequently bought together products & addons to increase AOV. Use in cart upsell, cross sells & automatic product recommendations for complementary products on product page & cart drawer. Add Multi Sales Notifications, Low Stock Countdown Bar, Countdown Timer, Sold Counter, Sales Popup, Quick View, Trust Badges, sticky add to cart bar, frequently bought, Announcement Bar, Sticky Cart Drawer & Buy X Get Y & instant Buy Buttons. High-conversion one click upsell & post purchase upsell app. Bundle frequently bought together products & addons to increase AOV. Use in cart upsell, cross sells & automatic product recommendations for complementary products on product page & cart drawer. Add Multi Sales Notifications, Low Stock Countdown Bar, Countdown Timer, Sold Counter, Sales Popup, Quick View, Trust Badges, sticky add to cart bar, frequently bought, Announcement Bar, Sticky Cart Drawer & Buy X Get Y & instant Buy Buttons. more Sales Pop up - Recent Sales Notification boost sales, build trust & social proof Show frequently bought products (FBT), related products, product recommendations Low Stock Countdown & Sold Counter create scarcity, boost sales & add to cart PROMO BAR: promote campaign and show multi announcement bar with Promotional Bar Upsell funnel builder, upsell & cross-sell, frequently bought together up sell
Easily add customized age checks, prevent content theft, and block unwanted traffic by IP or country Dashi Security Suite makes store protection easy. Quickly set age verification pop-ups tailored by product or region, prevent content theft by disabling copy-paste and right-click actions, and easily block or redirect visitors by IP address or country. Perfect for regulated industries or merchants prioritizing security, Dashi helps you stay compliant, protect your valuable content, and control store access—all without technical hassle. Dashi Security Suite makes store protection easy. Quickly set age verification pop-ups tailored by product or region, prevent content theft by disabling copy-paste and right-click actions, and easily block or redirect visitors by IP address or country. Perfect for regulated industries or merchants prioritizing security, Dashi helps you stay compliant, protect your valuable content, and control store access—all without technical hassle. more Flexible age verification on specific pages or by country with customized design Disable copy, right-click, and developer tools to protect content Prevent fraudulent orders by blocking high-risk countries, IPs, and bots
Easily add and customize size charts & guides to help customers find the perfect fit. Create clean, responsive size charts for any product and customize them with text, images, and tables. Perfect for apparel, shoes, and detailed body measurements. Improve conversions and reduce returns with fit finders. The app is compatible with Hydrogen stores and works with any 2.0 theme. We've provided 11 presets for quick setup, along with an easy-to-follow guide to get started. Create clean, responsive size charts for any product and customize them with text, images, and tables. Perfect for apparel, shoes, and detailed body measurements. Improve conversions and reduce returns with fit finders. The app is compatible with Hydrogen stores and works with any 2.0 theme. We've provided 11 presets for quick setup, along with an easy-to-follow guide to get started. more Compatible with any 2.0 themes and Hydrogen stores Quick setup with 11 size chart presets Unit conversion ability between inch and cm Select size charts based on customer's location Floating and inline buttons to display
SVG Web Component to render and animate clock dials. Includes counter functionality and a JS API. DeDial is a set of Web Components whose primary purpose is to draw circular dials, counters, and timers. Dials can be used to represent animated gauges, or the ticks on a clock dial, or segments of a targeting sight. Additionally, animated countdowns can be initiated to add a more dynamic feel to any store. These components are intended for use by Theme designers, or advanced users familiar with CSS, that are looking to compose custom animations within the Theme Editor. DeDial is a set of Web Components whose primary purpose is to draw circular dials, counters, and timers. Dials can be used to represent animated gauges, or the ticks on a clock dial, or segments of a targeting sight. Additionally, animated countdowns can be initiated to add a more dynamic feel to any store. These components are intended for use by Theme designers, or advanced users familiar with CSS, that are looking to compose custom animations within the Theme Editor. more Render varied circular dials for static or animated displays, and clock faces. Animated forward and reverse counter with optional JavaScript interface. Smooth SVG scaling and CSS support from the theme editor.
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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.