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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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We've analyzed thousands of custom css apps to identify the top performers based on ratings and install counts.

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Contact forms that collect files and GDPR consent, then send every entry to Google Sheets. Create lead generation, event registration, feedback, contact, order forms, and more, without coding. Choose from 200+ customizable templates. Add file uploads, multi-step flows, and conditional logic to boost conversions. Seamlessly sync data with Shopify Customers, Klaviyo, Google Sheets, and more. Includes mobile responsiveness, real-time notifications, and responsive support. Now featuring an email marketing tool that integrates directly with your POWR contacts and Shopify customers! Create lead generation, event registration, feedback, contact, order forms, and more, without coding. Choose from 200+ customizable templates. Add file uploads, multi-step flows, and conditional logic to boost conversions. Seamlessly sync data with Shopify Customers, Klaviyo, Google Sheets, and more. Includes mobile responsiveness, real-time notifications, and responsive support. Now featuring an email marketing tool that integrates directly with your POWR contacts and Shopify customers! more Collect file uploads like photos, PDFs, and artwork on any form Add a GDPR consent checkbox so every signup is compliant Send every entry to Google Sheets, Shopify Customers, and Klaviyo Take event registrations and RSVPs for workshops, classes, and pop-ups Launch fast with 200+ templates, multi-step flows, and conditional logic

4.6(Reviews)

Countdown timer that creates urgency for every sale, launch, and limited-time offer POWR Countdown Timer creates urgency that drives sales. Add a countdown timer to flash sales, product launches, holiday promotions, and end-of-season sales so shoppers act fast. Show it as a countdown banner, a fixed header bar, a product page timer, or a cart countdown timer, and target specific landing pages. Start from pre-built templates or customize colors, animations, and layouts. Choose what happens when the timer ends, or use count-up mode to showcase store visits and build trust. POWR Countdown Timer creates urgency that drives sales. Add a countdown timer to flash sales, product launches, holiday promotions, and end-of-season sales so shoppers act fast. Show it as a countdown banner, a fixed header bar, a product page timer, or a cart countdown timer, and target specific landing pages. Start from pre-built templates or customize colors, animations, and layouts. Choose what happens when the timer ends, or use count-up mode to showcase store visits and build trust. more Add a cart countdown timer that nudges shoppers from cart to checkout Announce upcoming sales with a countdown banner on any page or landing page Run Black Friday and BFCM flash sales with timers that end or auto-repeat Build hype for product launches with a product countdown timer Match your store with pre-built templates, animations, and layouts

4.1(Reviews)

Capture emails with an email popup and discount popup that turn visitors into email signups. POWR Email Popup & Discounts helps you capture emails and grow your list without coding. Use an email popup to collect newsletter signups, or a discount popup that rewards new subscribers with a code. Trigger popups on exit intent, after a delay, or on scroll, and match your brand with ready-made templates, fonts, and colors. Every new signup syncs to Shopify Customers and can trigger an instant alert and autoresponder, so you can follow up with customers and prospects right away. POWR Email Popup & Discounts helps you capture emails and grow your list without coding. Use an email popup to collect newsletter signups, or a discount popup that rewards new subscribers with a code. Trigger popups on exit intent, after a delay, or on scroll, and match your brand with ready-made templates, fonts, and colors. Every new signup syncs to Shopify Customers and can trigger an instant alert and autoresponder, so you can follow up with customers and prospects right away. more Capture emails with an email popup that matches your brand, no coding needed. Reward email signups with a discount popup that delivers the code instantly. Show popups on exit intent, after a delay, or on scroll, on any page. Get instant alerts and send an autoresponder for every new signup. Sync every email signup to Shopify Customers automatically.

4.7(Reviews)

Easily create customizable image sliders, heroes, banners & slideshows to boost conversions. Enhance your product pages with POWR Image Slider & Slideshow! Upload, customize, and publish stunning product images in minutes without coding. Choose from multiple layouts like slider, carousel, and hero, and add smooth transitions. Protect your images by disabling right-click, customize slider speed, and include CTA buttons and SEO alt text for each image to boost conversions. Perfect for showcasing best sellers and new releases, ensuring shoppers have a clear view of what they're buying. Enhance your product pages with POWR Image Slider & Slideshow! Upload, customize, and publish stunning product images in minutes without coding. Choose from multiple layouts like slider, carousel, and hero, and add smooth transitions. Protect your images by disabling right-click, customize slider speed, and include CTA buttons and SEO alt text for each image to boost conversions. Perfect for showcasing best sellers and new releases, ensuring shoppers have a clear view of what they're buying. more Versatile slider layouts: slider, carousel, hero, with custom transitions. Slider types: Highlight products, best sellers, logos, new releases Image protection: Prevent image copying with disable right-click feature. Enhance engagement: Add CTA buttons and SEO alt text to each slider image. AI Image Generation: Convert text to image in a single prompt

4.1(Reviews)

Easily display Instagram Feed + Reels on your store. Convert more store visitors into customers. Showcase your Instagram feed + Reels with POWR Instafeed! Connect multiple accounts and hashtags to display posts that enhance your customers’ experience. Plus, connect other social feeds like Facebook, YouTube, TikTok, and Pinterest for a unique, super-POWR'd feed. Enjoy customizable designs, automatic updates for fresh content, and 24/7 support. With powerful analytics, track engagement to optimize your marketing strategy. Engage your audience with stunning visual displays & get more sales! Showcase your Instagram feed + Reels with POWR Instafeed! Connect multiple accounts and hashtags to display posts that enhance your customers’ experience. Plus, connect other social feeds like Facebook, YouTube, TikTok, and Pinterest for a unique, super-POWR'd feed. Enjoy customizable designs, automatic updates for fresh content, and 24/7 support. With powerful analytics, track engagement to optimize your marketing strategy. Engage your audience with stunning visual displays & get more sales! more Create Instagram Feeds and interactive Instagram Reels Connect Instagram but also Facebook, YouTube, Pinterest, TikTok & more Choose grid, slider, collage layouts, and crop images for a polished design Add hover effects and approve posts before they go live on your feed Link personal or business Instagram accounts with posts and hashtag feeds

4.8(Reviews)

Showcase stunning product images in an interactive lookbook gallery A visually captivating product gallery is a crucial aspect of an online store's success. POWR Lookbook Gallery is an easy-to-use tool that effectively displays your products, leading to higher customer engagement and ultimately driving up sales. Upload photos, create new images straight from Canva, or even add videos from YouTube, TikTok, and Vimeo. You can use the gallery to promote articles, events, or other unique content that makes your store stand out and distinguish your brand. A visually captivating product gallery is a crucial aspect of an online store's success. POWR Lookbook Gallery is an easy-to-use tool that effectively displays your products, leading to higher customer engagement and ultimately driving up sales. Upload photos, create new images straight from Canva, or even add videos from YouTube, TikTok, and Vimeo. You can use the gallery to promote articles, events, or other unique content that makes your store stand out and distinguish your brand. more Create stunning lookbook galleries or carousels with shoppable product images. Arrange your lookbook in grid, pic collage, or list-style layouts. Engage shoppers with likes and social sharing options for brand loyalty. Use lightbox features and hover effects to make your images stand out. Enable keyword search in your gallery for easy navigation and better UX.

4.6(Reviews)

Sales popup that announces your current sale and discount code to every shopper, on any page. POWR Sales & Promo Popup helps you drive more sales by announcing every promotion to the right shoppers. Use a sales popup or sale popup to share discount codes, flash sales, product launches, and free shipping offers. Add countdown timers to create urgency, schedule campaigns ahead of time, and target the pages where each offer matters most. Customize everything with 250+ templates and a no-code editor, then track views and clicks to see which promos convert. POWR Sales & Promo Popup helps you drive more sales by announcing every promotion to the right shoppers. Use a sales popup or sale popup to share discount codes, flash sales, product launches, and free shipping offers. Add countdown timers to create urgency, schedule campaigns ahead of time, and target the pages where each offer matters most. Customize everything with 250+ templates and a no-code editor, then track views and clicks to see which promos convert. more Promote any sale with a sales popup: 250+ templates for discounts and promos Add countdown timers, images, GIFs, and custom CTAs with 20+ popup elements Show popups on page load, after a delay, on scroll, or with a custom trigger Schedule campaigns for limited-time offers, product launches, and promo sales Track popup views, clicks, and responses with built-in analytics

4.6(Reviews)

Store locator and dealer locator to map every store, stockist, and pickup point Take your online store to the next level with POWR Map! Easily create interactive maps for your stores, events, or pop-ups—no coding required. With the new Google Sheets integration, you can bulk upload your store locations in a snap. Plus, we've added a geolocation search bar, automated store locators, and customizable map styles. Your customers will find you easily—boosting both online sales and in-person visits. Take your online store to the next level with POWR Map! Easily create interactive maps for your stores, events, or pop-ups—no coding required. With the new Google Sheets integration, you can bulk upload your store locations in a snap. Plus, we've added a geolocation search bar, automated store locators, and customizable map styles. Your customers will find you easily—boosting both online sales and in-person visits. more List every in-store pickup point so shoppers know where to collect orders Give shoppers directions to any location with one click on its map pin Bulk upload all your locations from a CSV file or Google Sheets at once Help shoppers find the nearest store with a geolocation search bar Show every stockist and dealer that carries your products on one map

4.1(Reviews)

Highlight product videos and tutorials from YouTube, TikTok, or Vimeo in a simple gallery layout. Product videos and how-to videos are very helpful in attracting new customers and increasing conversion rates on your store. Our video gallery app allows you to create a beautiful video gallery in minutes. You can use links directly from YouTube, TikTok, or Vimeo, which will auto-refresh and display them in the layout of your choice, like a grid, gallery, or collage. POWR YouTube Video Gallery provides numerous customization options to make your video galleries look amazing. Product videos and how-to videos are very helpful in attracting new customers and increasing conversion rates on your store. Our video gallery app allows you to create a beautiful video gallery in minutes. You can use links directly from YouTube, TikTok, or Vimeo, which will auto-refresh and display them in the layout of your choice, like a grid, gallery, or collage. POWR YouTube Video Gallery provides numerous customization options to make your video galleries look amazing. more Insert payments links in your videos for instant sales Besides gallery styles, use a layout like a carousel or single hero video. Video content refresh - Set how often new videos are auto-refreshed Enable video auto-play, auto-slide, auto-repeat, random order and more Turn on captions, social sharing + likes and comments

4.6(Reviews)

Organize & display product descriptions, size charts, return policies, and more with POWR Tabs. Product tabs have proven to reduce shopper confusion & improve customer experience. Optimize your store for sales with product page menus, and display delivery & return policies, size charts, or product description information in custom-made tabs. Adjust colors, fonts, and spacing, to match your branded design so your product page tabs menu fits perfectly into your site theme. Take every advantage to convert more browsers into buyers! Product tabs have proven to reduce shopper confusion & improve customer experience. Optimize your store for sales with product page menus, and display delivery & return policies, size charts, or product description information in custom-made tabs. Adjust colors, fonts, and spacing, to match your branded design so your product page tabs menu fits perfectly into your site theme. Take every advantage to convert more browsers into buyers! more Fully open format for complete product tabs customization Add hyperlinks, images, HTML code and more to your tabs menu Enable hover effects on tabs - highlight or color invert Select layout, size, width, style, transition speed & alignment Product descriptions and tabs are supported in any language

4.6(Reviews)

Revolutionize how you show your upcoming events, webinars, and more with a stylish Event Gallery. POWR Event Gallery Showcase is designed to transform your website's visual appeal. It brings your event images to life with versatile layouts like lookbook styles, grids, pic collages, or sliders. Engage your audience further by enabling social media sharing and likes directly from your gallery. Plus, with our dynamic lightbox and hover effects, your event visuals will captivate visitors. Now featuring an internal email marketing tool (for Business users only) POWR Event Gallery Showcase is designed to transform your website's visual appeal. It brings your event images to life with versatile layouts like lookbook styles, grids, pic collages, or sliders. Engage your audience further by enabling social media sharing and likes directly from your gallery. Plus, with our dynamic lightbox and hover effects, your event visuals will captivate visitors. Now featuring an internal email marketing tool (for Business users only) more Versatile layout styles: Gallery, lookbook, grid, collage, slider Enable social sharing and likes for more engagement Dynamic lightbox and hover effects so shopper can take a closer look Open-text search function for easier event gallery navigation

4.0(Reviews)

Customizable FAQ Help Center to answer questions, boost sales, & reduce support inquiries. Maximize customer support and sales with the POWR Product FAQ Help Center. Easily create SEO-optimized FAQ for product descriptions that match your brand's style—no coding required! Answering common product questions directly on your product page results in quicker sales while reducing support tickets. For example, answer questions regarding shipping details and return policies directly in your store. Elevate your customer experience with our easy-to-use, feature-rich FAQ tool. Maximize customer support and sales with the POWR Product FAQ Help Center. Easily create SEO-optimized FAQ for product descriptions that match your brand's style—no coding required! Answering common product questions directly on your product page results in quicker sales while reducing support tickets. For example, answer questions regarding shipping details and return policies directly in your store. Elevate your customer experience with our easy-to-use, feature-rich FAQ tool. more Add links, images, and videos to FAQs, then enable mouse-over effect FAQs are SEO-optimized to improve organic search traffic Create half-width sections to save space on the page Make your product FAQ Help Center searchable with a search bar

4.5(Reviews)

Make it easy to showcase packages, services, or plans side-by-side with our Pricing Comparison Table When a shopper can quickly compare your various pricing plans at once, it benefits your business in two key ways. 1) Purchase decisions are made faster, shortening your sales cycle, and 2) More of your higher-priced choices are sold. You can also use it to cross-sell by displaying related products together. A pricing comparison table will increase revenue if your pricing is competitive and product features are clearly displayed. It will also keep your store well-organized and easy to understand. When a shopper can quickly compare your various pricing plans at once, it benefits your business in two key ways. 1) Purchase decisions are made faster, shortening your sales cycle, and 2) More of your higher-priced choices are sold. You can also use it to cross-sell by displaying related products together. A pricing comparison table will increase revenue if your pricing is competitive and product features are clearly displayed. It will also keep your store well-organized and easy to understand. more Highlighted plan: Draw more attention to the "Best" or "Recommended" plan option Choose to direct buyers to your pricing page or take payments directly in-app Set CTA buttons to make one-time payments, donations, or subscription pricing Set size, spacing, colors & border of your comparison table to match your brand Adjust each pricing table with optional & unlimited plan features

4.9(Reviews)

Reduce returns and support calls + get more sales with an easy product size chart, size guide. This is a simple and straightforward app for displaying proper sizing for your products on your store. It has many benefits, like empowering customers to understand the correct size before buying and minimizing returns and refunds due to sizing issues. Provide comprehensive product details and reduce the need for customer support inquiries. Accelerate the purchase process by addressing sizing concerns upfront, preventing customers from abandoning their carts. This is a simple and straightforward app for displaying proper sizing for your products on your store. It has many benefits, like empowering customers to understand the correct size before buying and minimizing returns and refunds due to sizing issues. Provide comprehensive product details and reduce the need for customer support inquiries. Accelerate the purchase process by addressing sizing concerns upfront, preventing customers from abandoning their carts. more Functional product sizing chart on your website with no coding required Add multiple size tables, images, videos, tabs, and more to your size charts Highlight feature to bring attention to the most popular size Match your brand’s style with customizable colors, fonts, sizes, and borders

5.0(Reviews)

Improve conversions, store design, and shopper experience with a Video Slider Feed! Embed a POWR Video Slider to show product tutorials, testimonials, or promo videos on any or multiple pages. Help store visitors visualize the benefits of your products or services in an eye-catching sliding video feed. Boost store engagement with a video header or video on your main store page. Upload tutorials and how-to videos, or create a page full of product videos. Customize your Video Slider to match your store theme with custom colors & fonts, transitions, playback options, and more! Embed a POWR Video Slider to show product tutorials, testimonials, or promo videos on any or multiple pages. Help store visitors visualize the benefits of your products or services in an eye-catching sliding video feed. Boost store engagement with a video header or video on your main store page. Upload tutorials and how-to videos, or create a page full of product videos. Customize your Video Slider to match your store theme with custom colors & fonts, transitions, playback options, and more! more Create any video display style - slider, banner, gallery, hero, or a whole page Set up your video feed for auto-play and/or auto-repeat, then set delay Enable video auto-cropping and set aspect ratio - 16:9, 4:3 or custom Set video slider size, transitions, speed and add captions Multiple pre-built video slider templates to choose from

4.8(Reviews)

Create wholesale orders for bulk order fulfillment and expand your wholesale customer network. Grow your wholesale customer base with easy order sheets you can create in minutes. POWR Wholesale Orders makes creating custom wholesale order forms for your website easy without coding, and they are synced with Shopify customers. Whether it's a simple order, a complex bulk order, or a vendor registration, you can build it with the POWR B2B Wholesale Order. Grow your wholesale customer base with easy order sheets you can create in minutes. POWR Wholesale Orders makes creating custom wholesale order forms for your website easy without coding, and they are synced with Shopify customers. Whether it's a simple order, a complex bulk order, or a vendor registration, you can build it with the POWR B2B Wholesale Order. more Accept payments: Single payments, subscriptions, donations + more Multi-step form: Use conditional logic for creating longer complex orders Sync contacts: Auto-saved contacts with Shopify Customers & Mailchimp Autoresponder: Instant email reply to new wholesale order customers Instant alerts: Get an email immediately after new order submissions

4.8(Reviews)

AI search, AI chat, product filters & search bar to boost CR with smart product search & discovery Prefixbox AI Search is Built for Shopify. Prefixbox enhances search and collection pages through predictive search bar, product discovery and dynamic product filters. Customize product tiles within Shopify Theme Editor. Supporting Shopify Plus and Markets. AI chat for product discovery to boost sales, search recommendations and support automation to reduce costs. Full metaobject, metafield and product option support. Gain full control with merchandising to override or promote products. Prefixbox AI Search is Built for Shopify. Prefixbox enhances search and collection pages through predictive search bar, product discovery and dynamic product filters. Customize product tiles within Shopify Theme Editor. Supporting Shopify Plus and Markets. AI chat for product discovery to boost sales, search recommendations and support automation to reduce costs. Full metaobject, metafield and product option support. Gain full control with merchandising to override or promote products. more Customize product tiles and search & filter interface in Shopify’s Theme Editor Use dynamic product filters to refine by collections or features for search AI chat for product discovery, recommendations & support automation Empower shoppers with AI search (vector) that learns from behavior and context Override any filter or search result to promote products with Merchandising

5.0(Reviews)

Stunning comparison tables for your store, highlighting why your products are worth purchasing Introducing Pretty Comparison Tables - an app for making visual, dynamic comparison tables of your products and collections. With access to three unique templates, merchants can easily showcase features and benefits, helping customers make informed decisions. Create sleek, responsive tables that highlight key details like product variations, technical specifications, and more. Ideal for visual comparisons across your catalog. Introducing Pretty Comparison Tables - an app for making visual, dynamic comparison tables of your products and collections. With access to three unique templates, merchants can easily showcase features and benefits, helping customers make informed decisions. Create sleek, responsive tables that highlight key details like product variations, technical specifications, and more. Ideal for visual comparisons across your catalog. more Engaging templates to create stunning comparison tables for products/collections Add comparison text, and more to each row, providing valuable insights Mobile-friendly design ensures seamless user experience on all devices Intuitive user interface functionality, for easy table management Focus on customer satisfaction, by streamlining the decision-making process

4.8(Reviews)

Clothing Size Finder + VTO. Improve CVR, reduce refunds, build customer loyalty. Clothing Size Finder Lite + VTO (Add-On) VTO is available as a add on. A visual overlay of the selected garment on the shopper’s photo directly from the PDP. Results are generally strong, in some cases, especially with dresses, the AI may adjust minor visual details. Still, shoppers gain a clear and engaging visualisation. While Size Finder replaces static size charts helping shoppers to choose the size that fits quickly. Clothing Size Finder Lite + VTO (Add-On) VTO is available as a add on. A visual overlay of the selected garment on the shopper’s photo directly from the PDP. Results are generally strong, in some cases, especially with dresses, the AI may adjust minor visual details. Still, shoppers gain a clear and engaging visualisation. While Size Finder replaces static size charts helping shoppers to choose the size that fits quickly. more Size recommendation from basic shopper info. Replaces static size charts. Shows size conversions in International, EU, UK, US, IT, and waist in one view. Calibrate sizing model to suit your brand's sizing. (one brand) No-code install in minutes. Lite version of Prime AI Size Finder technology. Too lite version? Seeking for a greater customisation? Contact us now

3.4(Reviews)

AI contact form builder with file uploads, conditional logic, and no-code embeds. Create Shopify custom form with upload or image upload, inquiry, quote, registration, lead, and survey forms without code. Use AI to get started, then customize fields, conditional logic, multi-step layouts, popups, and inline embeds. Collect customer details, photos, and documents, send email alerts and autoresponders, and sync submissions with Shopify Customers, Google Sheets, Klaviyo, Mailchimp, Omnisend, or Zapier. Create Shopify custom form with upload or image upload, inquiry, quote, registration, lead, and survey forms without code. Use AI to get started, then customize fields, conditional logic, multi-step layouts, popups, and inline embeds. Collect customer details, photos, and documents, send email alerts and autoresponders, and sync submissions with Shopify Customers, Google Sheets, Klaviyo, Mailchimp, Omnisend, or Zapier. more Create AI-assisted contact, file upload, inquiry, quote, and registration forms Collect photos, documents, and customer details with flexible file uploads Use conditional logic, multi-step layouts, and required fields to guide shoppers Embed forms inline, in popups, or on product, cart, home, and landing pages Send email alerts and sync submissions with Shopify, Sheets, Klaviyo, or Zapier

5.0(Reviews)

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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.