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Custom CSS Shopify Apps

Discover the best Custom CSS apps for your Shopify store in 2025. 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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Add unique variant descriptions to your products. A simple way to showcase product variant details. With Variant Description Pro you can now add a description for each variant. And support bulk editing. Increase sales, minimize returns, and customer support with descriptions for every product variant. Communicate different shipping times or availability information, provide variant sizing information, display variant materials or fabrics—there are many use cases. This app is the solution for complex products, designed to enhance your product pages. With Variant Description Pro you can now add a description for each variant. And support bulk editing. Increase sales, minimize returns, and customer support with descriptions for every product variant. Communicate different shipping times or availability information, provide variant sizing information, display variant materials or fabrics—there are many use cases. This app is the solution for complex products, designed to enhance your product pages. more Add a description for each product variant Add input/option for each product variant Rich full text editor that supports images, videos, links, tables and many more Bulk add/update descriptions for product variants The app works with all themes. Chat with us to customize app as per your needs

5.0(Reviews)

Product Description of Selected Variant | Tabs/Accordion in Product Description, FAQ Page & Sections Variant Descriptions King helps you showcase tailored product details for each variant— like care instructions or technical info. Keep long descriptions organised with tabs or collapsible accordions for a cleaner layout. Extend this flexibility to any page or theme section, from FAQ and Returns to Shipping, Privacy, or T&C. Enhance clarity, improve navigation, and create a seamless shopping experience without coding. Talk to our team for a custom setup for your store. Variant Descriptions King helps you showcase tailored product details for each variant— like care instructions or technical info. Keep long descriptions organised with tabs or collapsible accordions for a cleaner layout. Extend this flexibility to any page or theme section, from FAQ and Returns to Shipping, Privacy, or T&C. Enhance clarity, improve navigation, and create a seamless shopping experience without coding. Talk to our team for a custom setup for your store. more Add unique product description for product variants. Minimise returns & support Show product descriptions in Tabs/Accordions. Switch tabs to accordion on mobile Customize look of Product Tabs & Accordions. Add Product Review Tabs/Accordions Add Tabs/Accordion FAQ to any page or theme section. FAQ. Q&A. Privacy. Returns The app works with all themes. Chat with us to customize app as per your needs.

4.9(Reviews)

Overcome the 3 product options 100 variant limit with unlimited product options & variant add ons. Advanced product options w/ colour swatches & color variant. Create multi select & conditional logic w/ VO Product Options. Use as a product configurator; texboxes, surcharges, & monograms. Create price addons for best custom option variants, & multi variants. VO Options, product varient picker, textfield, textify, variant app, Multiple attributes, g-variants product options, unlimited variant product options to customize products easify options bold product option Advanced product options w/ colour swatches & color variant. Create multi select & conditional logic w/ VO Product Options. Use as a product configurator; texboxes, surcharges, & monograms. Create price addons for best custom option variants, & multi variants. VO Options, product varient picker, textfield, textify, variant app, Multiple attributes, g-variants product options, unlimited variant product options to customize products easify options bold product option more price add on, custom text box, checkbox, photo upload photo, custom options upload image upload file product addons product personalizer, variant picker Infinite Product Options and Custom variant image swatch variant color swatches custom product builder, product add on infinite, options variant image variant textbox product variations best custom product options variant option text field

4.6(Reviews)

Add Variant Options in Product Title to improve shopping experience. Variant Title Magic lets you alter your product titles based on the chosen variant, resulting in clearer understanding and minimized confusion for customers. The app automatically updates the product title when a variant is selected and allows you to set a single rule for all product variants in your store, making it user-friendly and straightforward. Implementation is as easy as pressing a button, and you can enjoy the benefits of this product template app right away. Variant Title Magic lets you alter your product titles based on the chosen variant, resulting in clearer understanding and minimized confusion for customers. The app automatically updates the product title when a variant is selected and allows you to set a single rule for all product variants in your store, making it user-friendly and straightforward. Implementation is as easy as pressing a button, and you can enjoy the benefits of this product template app right away. more Update product title based on the variant selected. Set up a single title rule for all your variants based on product information's. Just One Click App reflect of complete product template information.

5.0(Reviews)

Your inventory + VDB virtual inventory means customers can build rings and order them from you. Create an engaging online experience by making it easy for your visitors to mix and match gemstones and mountings to create custom rings. Combine your own inventory with virtual inventory to dramatically expand your inventory offering. All within an extension customized to match your website theme and localized for language and currency. Put your customers in control of their ring creation experience! Let them match, compare and build the ring of their dreams. Create an engaging online experience by making it easy for your visitors to mix and match gemstones and mountings to create custom rings. Combine your own inventory with virtual inventory to dramatically expand your inventory offering. All within an extension customized to match your website theme and localized for language and currency. Put your customers in control of their ring creation experience! Let them match, compare and build the ring of their dreams. more Combine owned and virtual inventory for maximum ring-building potential Customize color, search controls, filters and display details. Select your suppliers and product selection to fit your merchandising strategy. Localize to your own language and currency.

5.0(Reviews)

Elevate your Sales with Product Recommendation Quizzes and Unique Personalized Shopping Experiences! Enhance your e-commerce experience with Veeform's personalized product discovery quizzes, which empower customers to make informed choices and enrich their shopping journey. Optimize your sales potential by connecting the right products with the right people, promoting engagement, and inspiring return visits. Additionally, gain valuable insights into customer preferences, and add leads to your mailing list or CRM. This paves the way for personalized, high-return marketing efforts. Enhance your e-commerce experience with Veeform's personalized product discovery quizzes, which empower customers to make informed choices and enrich their shopping journey. Optimize your sales potential by connecting the right products with the right people, promoting engagement, and inspiring return visits. Additionally, gain valuable insights into customer preferences, and add leads to your mailing list or CRM. This paves the way for personalized, high-return marketing efforts. more Optimize your sales funnel by guiding customers to the right product Super user-friendly builder with multiple customizable options to fit your brand Make a quiz in a snap with 50+ templates and AI-powered question crafting Leverage from analytics dashboard to track customer answers & sales performance Integrate and sync lead data with marketing platforms such as Klaviyo & Omnisend

5.0(Reviews)

Easily Hide Sold Variants for a Cleaner Shop! Unveiling Success with Veil. Say goodbye to confusing customers with sold-out products! ✨ Unveiling only available options, Veil keeps your store looking sleek & tempting. Hide sold-out variants in a click, boosting sales & customer satisfaction. Easy to use, it lets you focus on what you love – running your business! Ready to unveil a better shopping experience? Get Veil today! Say goodbye to confusing customers with sold-out products! ✨ Unveiling only available options, Veil keeps your store looking sleek & tempting. Hide sold-out variants in a click, boosting sales & customer satisfaction. Easy to use, it lets you focus on what you love – running your business! Ready to unveil a better shopping experience? Get Veil today! more Hide sold-out, unavailable or any custom variant Hide any specific variants regardless of inventory level. No need to delete it. Hide variants based on custom rules such as inventory or tags Hide variants when inventory qty is less than x or any condition you like Works with even the customised theme and any other theme

4.6(Reviews)

Boost sales and decrease returns with personalized AI-driven size recommendation Vestico provides personalized size recommendations for apparel brands with the power of artificial intelligence. No more guesswork or worrying about fit – Vestico will reduce returns and boost sales by ensuring customers get the perfect fit every time. As customers shop, Vestico continuously refines its recommendations on a product level, making them more accurate with each interaction. Its user-friendly interface will complement any brand identity, with no lift from your side. [[[ Vestico provides personalized size recommendations for apparel brands with the power of artificial intelligence. No more guesswork or worrying about fit – Vestico will reduce returns and boost sales by ensuring customers get the perfect fit every time. As customers shop, Vestico continuously refines its recommendations on a product level, making them more accurate with each interaction. Its user-friendly interface will complement any brand identity, with no lift from your side. [[[ more Size recommendation on every apparel item AI-powered system that learns from customers’ purchases and gets smarter Tested improvement in returns rates and conversion metrics Easy to install & next-day launch Access to the dashboard for in-depth analytics & customization options

5.0(Reviews)

Easily create multi-level filters for quick search and compatibility checks, reducing return rates. Enhance your store with a YMM search widget for automotive parts & related products. This widget helps customers find compatible items for their cars, motorcycles, trucks, etc., via a filtered search. Customize YMM dropdowns and display fitment info on orders to reduce incompatibility returns. It improves the shopping experience and boosts customer satisfaction. Enhance your store with a YMM search widget for automotive parts & related products. This widget helps customers find compatible items for their cars, motorcycles, trucks, etc., via a filtered search. Customize YMM dropdowns and display fitment info on orders to reduce incompatibility returns. It improves the shopping experience and boosts customer satisfaction. more Enhance your store's search with a versatile YMM search widget finder. Display fitment information and compatibility charts on product pages. Display product fitment in orders to reduce return rates for purchased items. Database containing newly released vehicles year round Provide comprehensive design or customization support for YMM applications.

4.9(Reviews)

Run viral giveaways, contests & sweepstakes to grow email list, boost engagement & have more sales! ViralSweep offers easy management of giveaways, sweepstakes, contests, raffles & waitlists, all while helping you boost sales & go viral! You can quickly create custom promotion pages to collect entries, analyze entrant data with charts & graphs, and easily select & notify winners. Even incentivize social media sharing to boost your promotion’s reach, generating additional leads and sales. You can collect UGC by running photo & video contests and choosing winners with votes or manual selection. ViralSweep offers easy management of giveaways, sweepstakes, contests, raffles & waitlists, all while helping you boost sales & go viral! You can quickly create custom promotion pages to collect entries, analyze entrant data with charts & graphs, and easily select & notify winners. Even incentivize social media sharing to boost your promotion’s reach, generating additional leads and sales. You can collect UGC by running photo & video contests and choosing winners with votes or manual selection. more Create your giveaway or raffle in minutes & share it easily with your customers Give bonus entries for completing social media actions: like, share, & more Run purchase-based giveaways to reward entries based on spend $1 spent = 1 entry Refer friends or complete social actions to move up spots on the waitlist Integrates with all your favorite email marketing, social media, & SMS platforms

4.8(Reviews)

Increase sales with AI Visual Search, Search Bar and Product Recommendations Simplify your e-commerce shopping experience and make it impressive.​ With our Visual Search, Search Bar and Product Recommendations plugin, you can show more customized results in user searches and increase your conversion rate.​ Increase your conversion rate with our AI-powered search and discovery plugin. Lightning-fast text search, image search, advanced category filtering, intuitive product filters and recommendations keep users happy. A complete suite for the discovery phase. Simplify your e-commerce shopping experience and make it impressive.​ With our Visual Search, Search Bar and Product Recommendations plugin, you can show more customized results in user searches and increase your conversion rate.​ Increase your conversion rate with our AI-powered search and discovery plugin. Lightning-fast text search, image search, advanced category filtering, intuitive product filters and recommendations keep users happy. A complete suite for the discovery phase. more Visual Search: Allow your e-commerce customers to search for products by images. Search Bar: Allow your e-commerce customers to search with AI text search. Product Recommendations: Suggest products in real time based on behaviour. Multiple Strategies: Optimize each experience with a variety of algorithms. Optimized for global sales with full Shopify Markets support.

0.0(Reviews)

Your one-stop A/B testing and Personalization platform - AI Powered full funnel CRO and AB testing. AI-powered A/B testing, split testing, and personalization. With Visually, test across every stage of the shopper journey: AB test homepage, PDPs, carts, A/B test checkouts and post-purchase upsells. With Visually AI, instantly generate site components and uncover what drives conversion rate. Visually connects to your Shopify data for full-funnel analytics and segmentation in one place. Run smarter, no-code A/B testing and CRO, reduce dev time, and optimize your store at the speed of commerce AI-powered A/B testing, split testing, and personalization. With Visually, test across every stage of the shopper journey: AB test homepage, PDPs, carts, A/B test checkouts and post-purchase upsells. With Visually AI, instantly generate site components and uncover what drives conversion rate. Visually connects to your Shopify data for full-funnel analytics and segmentation in one place. Run smarter, no-code A/B testing and CRO, reduce dev time, and optimize your store at the speed of commerce more Generate, edit, & launch AB tests in minutes using Visually AI Personalize by segment using catalog + behavior signals, Optimize with AB tests Leverage powerful analytics - COGS, custom events, Bayesian statistical engine AB test themes, discounts, price and shipping tiers* * Plan based eligibility Page speed focused architecture & Zero flickering. AB test without the tradeoffs

4.8(Reviews)

Automate email alerts for new products, updates, and saved searches to engage and retain customers. Keep customers in the loop — Vye sends automated email alerts to keep customers informed about new or updated products, collections, and product tags. Customers can save their searches and receive notifications when matching items become available. They can also subscribe to updates for specific collections or product tags. Vye makes it easy to capture customer interests and send personalized alerts, increasing engagement, retention, and sales while saving time for store owners. Keep customers in the loop — Vye sends automated email alerts to keep customers informed about new or updated products, collections, and product tags. Customers can save their searches and receive notifications when matching items become available. They can also subscribe to updates for specific collections or product tags. Vye makes it easy to capture customer interests and send personalized alerts, increasing engagement, retention, and sales while saving time for store owners. more Automate email alerts when new products or updates are added to your store. Allow customers to subscribe to updates for specific collections or tags. Let customers save searches and receive alerts for matching products. Create customizable forms with an easy-to-use editor for your store. Design personalized email templates to notify customers about product updates.

4.3(Reviews)

Add geolocation country warnings to your store and alert customers about important product warnings. Warn allows you to notify customers about important information regarding a certain product, right in the product page. With warn you can show unlimited geolocation (country-based) product warnings that will appear just for visitors from specific countries (or for all of the visitors). Warn supports multiple warning types: Confirmation pop ups & textual notes (FAQ). Warn allows you to alert customer about Prop 65 warning, fragile products, shipping restrictions, shipping delays, covid19 & more. Warn allows you to notify customers about important information regarding a certain product, right in the product page. With warn you can show unlimited geolocation (country-based) product warnings that will appear just for visitors from specific countries (or for all of the visitors). Warn supports multiple warning types: Confirmation pop ups & textual notes (FAQ). Warn allows you to alert customer about Prop 65 warning, fragile products, shipping restrictions, shipping delays, covid19 & more. more Notify customers about shipping restrictions, delivery delay, Prop 65 & more! Add unlimited warnings of any type: Note, FAQ, disclaimers & confirmation pop up Country-based (geolocation) warnings: Show the warnings for specific countries Collection-based warnings: Show the warnings for specific products & collections Universal warnings: Make a single warning apply to all of the products in store

4.9(Reviews)

Maximize Engagement with Webrex: The Ultimate Bar for Promotions, Countdowns, and Targeted Campaigns Boost your store's impact with Webrex, the all-in-one bar for promotions and targeted campaigns. From Countdown to Free Shipping Bars, customize effortlessly for both mobile and desktop. Utilize GEO and device targeting to optimize engagement and conversions. With the Contact Bar, easily build your email list for future promotions. Set up in minutes, no coding needed, and enjoy dedicated support to maximize your success. Boost your store's impact with Webrex, the all-in-one bar for promotions and targeted campaigns. From Countdown to Free Shipping Bars, customize effortlessly for both mobile and desktop. Utilize GEO and device targeting to optimize engagement and conversions. With the Contact Bar, easily build your email list for future promotions. Set up in minutes, no coding needed, and enjoy dedicated support to maximize your success. more Multiple Position, Multiple Bar, Multiple Animation with Full Customization Bar Type: Promotional & Countdown Bar, Add to Cart, Email Bar, Free Shipping Bar Animation Type: Regular, Moving Multiple Bar, Carousel Slide Set Diffrent Content & Design for Mobile and Desktop, Fully Customization Targeting: GEO, Device, Page & Source Targeting and Scheduling

4.7(Reviews)

AI Personalized Recommendations with Frequently Bought, Related Items, Slide Cart, & Post Purchase. With Wiser, you can showcase intelligent product suggestions across your store — from the homepage and product pages to the cart, checkout, & even post-purchase. It includes a complete suite of upsell and cross-sell widgets like Slide Cart Drawer, Checkout Upsell, Related & Recently Viewed Products, Shop the Look, Pair it With, Product Add-ons, search & product filters. Track performance directly in your Shopify admin, access APIs for custom integrations, and scale personalization easily. With Wiser, you can showcase intelligent product suggestions across your store — from the homepage and product pages to the cart, checkout, & even post-purchase. It includes a complete suite of upsell and cross-sell widgets like Slide Cart Drawer, Checkout Upsell, Related & Recently Viewed Products, Shop the Look, Pair it With, Product Add-ons, search & product filters. Track performance directly in your Shopify admin, access APIs for custom integrations, and scale personalization easily. more Show frequently bought together product bundles with discounts & best sellers Boost AOV by post purchase Upsell, Checkout Upsell, Collections & Product Addons Advanced drawer cart for in cart upsell with progress bar to increase conversion Create recommendations quiz, get API access & customize the widgets easily Advanced Search & filters, Related products & Upsell by Smart Popups with rules

4.9(Reviews)

Build trust, create urgency, and drive more sales with sales popups, timers & review notifications. Show live visitor counts, recent sales, and customer reviews to build trust with your audience. Highlight social media activity, testimonials, and follower milestones to make your store more credible. Increase sales with alerts like low stock, flash discounts, and free shipping bars. WiserNotify makes it easy to turn visitors into buyers. With over 250 integrations, setup is quick and simple. Need help? Our team is here to assist you. Show live visitor counts, recent sales, and customer reviews to build trust with your audience. Highlight social media activity, testimonials, and follower milestones to make your store more credible. Increase sales with alerts like low stock, flash discounts, and free shipping bars. WiserNotify makes it easy to turn visitors into buyers. With over 250 integrations, setup is quick and simple. Need help? Our team is here to assist you. more Social Proof Notifications: Show recent purchases, reviews, & live visitor count Promotional Widgets: Display discounts, announcements, and special offers. Inline messaging: Show social & FOMO notifications within your website content. Analytics Dashboard: Track clicks, conversions, and sales. Multi-language Support: Customize notifications in 50+ languages.

5.0(Reviews)

Enhance your conversion rate with Advanced AI Powered Search, Filter & Product Discovery tools Elevate your store’s product discovery with Wizzy AI Search & Filter. Enable dynamic filters by product tags, sizes, colors, vendors, brands, inventory locations, and more, tailored to your store’s needs. Wizzy’s intelligent search provides instant AI-driven suggestions, spell checks, autocorrect, synonyms with proprietary AI product ranking. Enhance engagement on collection and search pages with keyword redirects, and curated recommendations even turning 404 pages into conversion opportunities. Elevate your store’s product discovery with Wizzy AI Search & Filter. Enable dynamic filters by product tags, sizes, colors, vendors, brands, inventory locations, and more, tailored to your store’s needs. Wizzy’s intelligent search provides instant AI-driven suggestions, spell checks, autocorrect, synonyms with proprietary AI product ranking. Enhance engagement on collection and search pages with keyword redirects, and curated recommendations even turning 404 pages into conversion opportunities. more Full text contextual search, understands users intent to show relevant products Shows Recent Search Terms, Trending Searches, Visual Swatches and Blog Search Unlimited custom filters & Show Individual Variants on Search & Collection Pages Search by Colors, Size, Variations, Description, Tags, Metafields, SKU, barcode. Implements fast search and filters without hampering store's page insights score

5.0(Reviews)

Allow customers to add gift wrap & messages for their orders and earn more upselling opportunities. Offers more value | Upsells your products | Personalizes the orders Wrapin is a super thoughtful feature that shows that you care about your customers and the people they buy gifts for. Use it to gain an edge over your competitors and expand your store's features and functionalities. The app complements your existing theme, design, and layout. Delight and enrich your customer experience by offering gift-wrapping and messages. Use our new gift options and make your presents look even fancier. Offers more value | Upsells your products | Personalizes the orders Wrapin is a super thoughtful feature that shows that you care about your customers and the people they buy gifts for. Use it to gain an edge over your competitors and expand your store's features and functionalities. The app complements your existing theme, design, and layout. Delight and enrich your customer experience by offering gift-wrapping and messages. Use our new gift options and make your presents look even fancier. more Admin can Add Multiple Gift Options with Multiple Language Translation Support. Automatically tag the order with gift-wrapped items and generate a reports. Include a gift wrap option and message details in the order confirmation email. Choose between paid or free gift wrap options & Admin can set gift message limit Customers can add a personalized message for every gift-wrapped box.

4.9(Reviews)

Boost sales and order value with personalized gift messages, gift wrap, and gift options. Enable gift wrap, gift messages, and personalized gift options across your store. Customers add gift features on product pages, in cart, or at checkout for a complete gifting experience. Includes customizable gift wrapping, gift notes, personalized messages, and gift boxes. Perfect for holidays, special occasions, Black Friday, and Cyber Monday. Helps increase average order value and boost customer satisfaction through seamless gift experiences that match your store. Enable gift wrap, gift messages, and personalized gift options across your store. Customers add gift features on product pages, in cart, or at checkout for a complete gifting experience. Includes customizable gift wrapping, gift notes, personalized messages, and gift boxes. Perfect for holidays, special occasions, Black Friday, and Cyber Monday. Helps increase average order value and boost customer satisfaction through seamless gift experiences that match your store. more Gift Blocks | Upsell gift options on product pages, carts, and at checkout Order Gift Options | Add gift wrap and gift messages to an entire order Product Gift Options | Add gift wrap and gift messages to individual products Elevated customer experience | A seamless way for shoppers to personalize gifts Fully customizable | Easily match gift option features to your brand and theme

4.7(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.