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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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Add Shop The Look to product pages. Showcase your customer's love by allowing them to upload images. Images speak more than words. So, using this app, you can add images to all products of your store or to only a single product to showcase some customers photos. Adding customer generated images will increase your brands trust value and help convert more visitors into paying customers. Studies have shown that adding a social proof to the product pages increases the conversion rate by a large degree. So, use this app to add that trust factor to your product pages. Images speak more than words. So, using this app, you can add images to all products of your store or to only a single product to showcase some customers photos. Adding customer generated images will increase your brands trust value and help convert more visitors into paying customers. Studies have shown that adding a social proof to the product pages increases the conversion rate by a large degree. So, use this app to add that trust factor to your product pages. more Add gallery / Shop The Look to the product pages. Showcase your brand's UGC on brand only page. Add social proof

4.6(Reviews)

StudBuilderⓇ expands your online inventory allowing you to display and sell Studs with Diamonds. Shopify store owners have the opportunity to seamlessly showcase Studs and diamonds on their websites. StudbuilderⓇ by GemFind expands your online inventory allowing you to display and sell virtual or in-stock products to your potential customers. StudbuilderⓇ connects retailers with stud and diamond suppliers through our proprietary platform JewelCloud as well as facilitates the insertion of inventory from the backend. Shopify store owners have the opportunity to seamlessly showcase Studs and diamonds on their websites. StudbuilderⓇ by GemFind expands your online inventory allowing you to display and sell virtual or in-stock products to your potential customers. StudbuilderⓇ connects retailers with stud and diamond suppliers through our proprietary platform JewelCloud as well as facilitates the insertion of inventory from the backend. more Shopify Website Development Comprehensive Digital Marketing Jewelry Store POS Integration Visit our website to learn more

0.0(Reviews)

AI-powered Page Builder built for Conversion. Create Sales Funnels with Upsells & A/B Tests Build and customize Shopify pages with drag-and-drop editor, no code. Use GemPages MCP with your AI agent to research content, generate HTML, and turn approved HTML into editable pages. Create sales funnels with post-purchase upsells, downsells, and A/B offer testing to improve AOV. Keep pages on brand with Global Styles and schedule campaign launches. Manage SEO settings, customize layouts for mobile, tablet, and desktop, and connect with 160+ apps for reviews, email, tracking, and more. Build and customize Shopify pages with drag-and-drop editor, no code. Use GemPages MCP with your AI agent to research content, generate HTML, and turn approved HTML into editable pages. Create sales funnels with post-purchase upsells, downsells, and A/B offer testing to improve AOV. Keep pages on brand with Global Styles and schedule campaign launches. Manage SEO settings, customize layouts for mobile, tablet, and desktop, and connect with 160+ apps for reviews, email, tracking, and more. more Build any pages faster with 400+ pre-built templates & theme sections GemPages MCP: Build and refine pages that convert, all inside your AI chat Sales Funnels: Pre-sell advertorials, post-purchase upsells, downsells & sub A/B Offer Testing & Analytics: Test funnel offers & variants driving highest AOV Built-in CRO Elements: Countdown, stock counter, quantity breaks & bundles

4.9(Reviews)

Shoppers see stock at each store, find the nearest one with stock and pick up their order there Shoppers leave when an item is out of stock online, even if a nearby store has it. GeoStock helps you show inventory by location on every product page, so customers see multi location inventory per product and variant, taken from your Shopify inventory locations. A store locator and store selector point shoppers to the nearest location with stock. Hide stores a country doesn’t serve and set your own stock labels. Offer local pickup and click and collect where items are in stock. Shoppers leave when an item is out of stock online, even if a nearby store has it. GeoStock helps you show inventory by location on every product page, so customers see multi location inventory per product and variant, taken from your Shopify inventory locations. A store locator and store selector point shoppers to the nearest location with stock. Hide stores a country doesn’t serve and set your own stock labels. Offer local pickup and click and collect where items are in stock. more Show stock by location and multi location inventory on every product page Add a store locator that points shoppers to the nearest store with stock Choose which countries see each store so shoppers see only stores serving them Display product availability by location per variant and hide empty stores Support local pickup and click and collect at stores where items are in stock

4.8(Reviews)

Empower Your Customers: Design Personalized Products Your Way, According to Your Rules (On Demand) gfx provides advanced customization tools for enabling unique products in your store. Built from collaborative experience with global sellers, gfx gives your store a new suite of tools for fun and interactive products. Let your fans collaborate with YOU! They can customize and personalize your designs using flexible templates and configurable rules with endless options. gfx provides advanced customization tools for enabling unique products in your store. Built from collaborative experience with global sellers, gfx gives your store a new suite of tools for fun and interactive products. Let your fans collaborate with YOU! They can customize and personalize your designs using flexible templates and configurable rules with endless options. more Create, publish, customize and print on-demand personalized products Upload your assets & easily set rules on customization and personalization Advanced AI protects against unwanted content and quickly moderate what’s submit Plug in with your favorite print-on-demand solution to avoid upfront costs Our support team is available to help you along the way with any questions.

0.0(Reviews)

Upgrade your Product Page with a slideshow Image Gallery. Follow best practices and sell more! This app replaces your old product page gallery with a slider. You can add a photo gallery of product pictures in image grid. Add a product photo slider or an image slideshow, magnify or zoom product pictures, and play clips in the autoplay video player. Choose how to show product gallery images: multiple variant images, product image zoom or a slide show lightbox. A product image thumbnail slider, product image carousel and clean product image display come built in, with image zoom on hover. This app replaces your old product page gallery with a slider. You can add a photo gallery of product pictures in image grid. Add a product photo slider or an image slideshow, magnify or zoom product pictures, and play clips in the autoplay video player. Choose how to show product gallery images: multiple variant images, product image zoom or a slide show lightbox. A product image thumbnail slider, product image carousel and clean product image display come built in, with image zoom on hover. more Easy install - pick a product gallery layout that fits your store Select image carousel type, arrows, colors, video player & image zoom Optimized for Mobile - swipe pictures in a product image viewer or slide show Assign product variant images - show only the selected one in a slideshow Rich Media - assign images, play product videos and show 3D models in AR

4.9(Reviews)

Preview product info and add to cart right on your collection page with no slow page reloads! Your customers can swipe through a product hover slider revealing multiple images, open a popup and add to cart. Show the full product media slider with one click quick buy. Pick a slideshow, carousel, slider or grid layout for your product images. Add arrows to slide between preview images. Show the second image on hover, or a hover animation on mouse over. Turn the collection page into a collection slider with ajax add to cart. Play a hover video slide show, or a product video on hover. Your customers can swipe through a product hover slider revealing multiple images, open a popup and add to cart. Show the full product media slider with one click quick buy. Pick a slideshow, carousel, slider or grid layout for your product images. Add arrows to slide between preview images. Show the second image on hover, or a hover animation on mouse over. Turn the collection page into a collection slider with ajax add to cart. Play a hover video slide show, or a product video on hover. more Collection product viewer - preview product images on hover and in a popup Quick view popup - add to cart from the collection image slider Mobile ready - swipe product pictures in a collection hover image slider Reduce shopping time - add image hover effects or product image slideshow Works with any product grid - product slider and product image carousel layouts

4.9(Reviews)

Show related products and variants as clean swatches. Clearer choices can help shoppers buy faster. Groopie groups related products and shows them as color, image, or button swatches on product pages, collections, search, and home. Shoppers can switch between related listings without leaving the page. Each product keeps its own URL, title, and listing. You can also restyle Shopify variant options as Variant Images, buttons, or dropdowns. Create groups by hand or auto-generate them from titles or tags. Groopie groups related products and shows them as color, image, or button swatches on product pages, collections, search, and home. Shoppers can switch between related listings without leaving the page. Each product keeps its own URL, title, and listing. You can also restyle Shopify variant options as Variant Images, buttons, or dropdowns. Create groups by hand or auto-generate them from titles or tags. more Custom variant picker: Redesign Shopify options as swatches, buttons, dropdowns Products as variants: Link separate listings; each product keeps its own page Collection & search swatches: Color/image/button swatches on product cards Auto-create product groups: From titles or tags in a few steps Product Group Import & Export

5.0(Reviews)

Motivate your customers to spend more with free gift with purchase (GWP) & BOGO offers. Unlock the power of free gifts to boost sales and loyalty. Our app lets you easily create custom gift offers—like BOGO, Buy X Get Y, or free shipping—without coding or design skills. Set your rules, add a message, and launch your campaign in minutes. Unlock the power of free gifts to boost sales and loyalty. Our app lets you easily create custom gift offers—like BOGO, Buy X Get Y, or free shipping—without coding or design skills. Set your rules, add a message, and launch your campaign in minutes. more Gift Rules – Set rules like Spend X, Buy X Get Y, or Collection-based Auto Add to Cart – Add free gifts automatically (optional) Fast & Easy – Launch gift offers in minutes, no coding needed Mobile Friendly – Smooth, responsive gift offers on all devices Multi-language – Popup now translatable via Shopify Translate app

4.9(Reviews)

Sell more gifts: add gift wrapping, noshi & message cards to product, cart, or checkout in 3 steps. Gift Options Plus adds gift wrapping, noshi, message cards, and more to your product page, cart, cart drawer, and checkout. Show or hide options per product, with text, checkbox, and dropdown inputs styled to match your theme. In the cart, choose "separate" line items or "bundle" mode to merge a product and its options into one clean line. Auto order tagging and order notes integration streamline gift fulfillment, and multilingual support is built in. Set up in 3 steps with hands-on support. Gift Options Plus adds gift wrapping, noshi, message cards, and more to your product page, cart, cart drawer, and checkout. Show or hide options per product, with text, checkbox, and dropdown inputs styled to match your theme. In the cart, choose "separate" line items or "bundle" mode to merge a product and its options into one clean line. Auto order tagging and order notes integration streamline gift fulfillment, and multilingual support is built in. Set up in 3 steps with hands-on support. more Add gift options to product pages, the cart and cart drawer, or checkout Offer gift wrapping, message cards, noshi, and more to boost order value See gift selections as line items in order details for smooth fulfillment Multilingual support — customize widget text for each language your store serves Set up in 3 steps with instant activation and free hands-on engineer support

4.4(Reviews)

Run giveaways where purchases, social actions and referrals earn entries and grow your list Giveaways and sweepstakes that reward every purchase and action. Give extra entries for purchases per dollar spent, target specific products or variants, and stack bonus rules for bundles and spending thresholds. Date-range multipliers create urgency at launch and before the campaign ends. Run it on a branded landing page or embed the giveaway widget, ready to capture any traffic you send. See the revenue each giveaway drives. Draw winners randomly with a built-in draw tool. Live in minutes. Giveaways and sweepstakes that reward every purchase and action. Give extra entries for purchases per dollar spent, target specific products or variants, and stack bonus rules for bundles and spending thresholds. Date-range multipliers create urgency at launch and before the campaign ends. Run it on a branded landing page or embed the giveaway widget, ready to capture any traffic you send. See the revenue each giveaway drives. Draw winners randomly with a built-in draw tool. Live in minutes. more Stack purchase-triggered entries across spend, products, bundles and thresholds Boost entries during product drops, flash sales, or your sweepstake's final hour Embed the giveaway widget and entry product badges, or host it on a landing page Sync entries and purchase activity to Klaviyo and Zapier to trigger automations Refer-a-friend, social actions and photo submissions for legal entry compliance

5.0(Reviews)

Premium Donation App | Manage charity donations and giving | Support charity causes in your store Givonate helps Shopify stores accept donations through customizable donation widgets with fixed or flexible amounts. Create campaigns for donations and charities with campaign goals, modern layouts, real-time giving tracking, and analytics. Match the widget style with your brand, view performance instantly, and collect contributions with ease. No coding required. Givonate is built for brands that support charity causes and want to drive engagement through charity and recurring donations. Givonate helps Shopify stores accept donations through customizable donation widgets with fixed or flexible amounts. Create campaigns for donations and charities with campaign goals, modern layouts, real-time giving tracking, and analytics. Match the widget style with your brand, view performance instantly, and collect contributions with ease. No coding required. Givonate is built for brands that support charity causes and want to drive engagement through charity and recurring donations. more Add branded donation popups to collect charity donations for nonprofits causes Create unlimited charity campaigns for donations with goals and custom layouts Track charity performance and donations progress for fundraising in real-time Set predefined charity donations amounts to simplify giving and encourage donors Track charity donations and analyze donation impact for your charity store

5.0(Reviews)

Easily set up and run Giveaways, Contests & Sweepstakes that drive real user engagement. Gleam Competitions is a Contest + Sweepstakes widget you can set up with a combination of entry methods that will drive traffic to your shop & increase real user engagement from visitors. Entrants have to complete actions such as subscribe to your email list or interact on social media in exchange for a chance to win your prize. Giveaway marketing is easy: Collect emails from visitors who want to win your prize, then keep them engaged with sales funnels & discounts after the giveaway is over. Gleam Competitions is a Contest + Sweepstakes widget you can set up with a combination of entry methods that will drive traffic to your shop & increase real user engagement from visitors. Entrants have to complete actions such as subscribe to your email list or interact on social media in exchange for a chance to win your prize. Giveaway marketing is easy: Collect emails from visitors who want to win your prize, then keep them engaged with sales funnels & discounts after the giveaway is over. more Create your own campaign, or use our campaign templates for every occasion. Run campaigns directly from your Shopify store to increase website traffic. Get entrants to sign up to your newsletter then sync to your Shopify admin. Use Viral Share action to incentivize entrants to refer their friends & family. Create photo contests to collect user-generated content from your customers.

3.9(Reviews)

Customize swatches and boost revenue with built-in product bundles. Show product options beautifully with clickable color and image swatches — fully customizable on product and collection pages. Group related products as variants to improve SEO and provide a seamless shopping experience. Boost sales with built-in product bundles — ideal for upsells, B2B, or promotions. Easy setup, no coding needed. Works with all themes and filter apps. Show product options beautifully with clickable color and image swatches — fully customizable on product and collection pages. Group related products as variants to improve SEO and provide a seamless shopping experience. Boost sales with built-in product bundles — ideal for upsells, B2B, or promotions. Easy setup, no coding needed. Works with all themes and filter apps. more Color swatch & image swatch anywhere(home page, collection page, search page) Group Products as Variants — Improve SEO and simplify product discovery. Product Bundles — Boost sales by offering bundled product combos. Hide out-of-stock variants, show low-stock alerts, and support multi-languages

4.9(Reviews)

Create powerful mega menus for large catalogs, help shoppers find products faster-no coding required Design stunning, flexible menus with Globo Mega Menu. Create multi-level dropdowns, add product images, icons, collections, and pages - no coding required. Customize layouts with our drag-and-drop builder to match your brand. Improve store navigation and boost user experience. Ideal for large catalogs and B2B stores. Fully responsive and works with all Shopify themes. Design stunning, flexible menus with Globo Mega Menu. Create multi-level dropdowns, add product images, icons, collections, and pages - no coding required. Customize layouts with our drag-and-drop builder to match your brand. Improve store navigation and boost user experience. Ideal for large catalogs and B2B stores. Fully responsive and works with all Shopify themes. more Dropdown menu with multiple levels, Tab, Block links, menu images. Block HTML, Featured products, New products, Featured blog posts, New blog posts Build menu bar with: contact form, search box, match font of theme, icon, etc. "HOT, NEW" badge, Menu item highlight, Fully responsive and mobile-friendly Easy to build your main menu, filter menu, smart menu, food menu

4.9(Reviews)

Add unlimited options to any product and charge for the extras. Paid upgrades can lift order value. Shopify caps you at 2,048 variants per product. Globo removes the cap. Build option sets from 30+ field types - text, file upload, colour and image swatches, dropdowns, dates and dimensions - and apply them to one product or the whole catalogue. Charge extra for options that cost more: add-on pricing runs on Shopify Functions, so discount codes and taxes stay accurate. Conditional logic hides options until they are relevant, and every choice flows into orders, packing slips and POS. Shopify caps you at 2,048 variants per product. Globo removes the cap. Build option sets from 30+ field types - text, file upload, colour and image swatches, dropdowns, dates and dimensions - and apply them to one product or the whole catalogue. Charge extra for options that cost more: add-on pricing runs on Shopify Functions, so discount codes and taxes stay accurate. Conditional logic hides options until they are relevant, and every choice flows into orders, packing slips and POS. more Text input field, file upload, color swatch, variant image, dropdown, checkbox Add-on pricing runs on Shopify Functions, so discount codes still apply Conditional logic shows or hides options based on earlier choices or variants Live preview lets shoppers see engraving, monogram or artwork before they buy Powerful product personalization w/ text, images, custom fields & live preview.

4.9(Reviews)

Design, sell, and scan event tickets at scale — native product variants and POS scanning Event Ticketing turns your store into your event ticketing platform. Each event is a product, with every date, time, and ticket type as a variant — sales flow through your store's analytics, inventory, and POS like any other product. Native extensions for theme, checkout, and POS. Branded PDF, Apple and Google Wallet tickets. Self-service date changes, transfers, and exchanges. Trusted by festivals, racing venues, conferences, and tour operators. Independently built and founder-led. Event Ticketing turns your store into your event ticketing platform. Each event is a product, with every date, time, and ticket type as a variant — sales flow through your store's analytics, inventory, and POS like any other product. Native extensions for theme, checkout, and POS. Branded PDF, Apple and Google Wallet tickets. Self-service date changes, transfers, and exchanges. Trusted by festivals, racing venues, conferences, and tour operators. Independently built and founder-led. more Branded tickets: PDF, Apple Wallet & Google Wallet, delivered automatically Native Shopify variants: every date, time, and ticket type is a real variant Scanning: Shopify POS tile and offline iOS app, with duplicate-scan alerts Theme blocks: event calendar and ticket list, no code Customer self-service: edit, transfer, or exchange tickets from the order page

5.0(Reviews)

Boost AOV with free shipping bar, free gifts, BOGO, AI upsells & cart goals — under 2min, no code! Increase your average order value by combining progress bars, cart goals, rewards, and AI upsells into one seamless experience that drives higher conversions and increases cart value. Create free shipping bars, offer free gifts with purchase, run BOGO, and show AI product recommendations to increase cart value — all without coding. Perfect if you’re looking to: Increase AOV with cart incentives, offer a free gift with purchase, add a free shipping progress bar & use AI upsells to boost AOV. Increase your average order value by combining progress bars, cart goals, rewards, and AI upsells into one seamless experience that drives higher conversions and increases cart value. Create free shipping bars, offer free gifts with purchase, run BOGO, and show AI product recommendations to increase cart value — all without coding. Perfect if you’re looking to: Increase AOV with cart incentives, offer a free gift with purchase, add a free shipping progress bar & use AI upsells to boost AOV. more Configure rules such as ⇝ cart value, cart quantity, cart has XYZ products. Configure stackable rewards such as ⇝ free gift, free shipping, order discount. Set as much as rules and rewards you want, you can stack both rules and rewards. Multi design templates fully localized ⇝ translations & currency conversion. Use it both as a top bar on your shop + a widget which you can place anywhere.

5.0(Reviews)

Increase AOV using cart drawer with AI upsell, progress bar, countdown timer, fraud-free checkout. GoKwik Cart turns your cart drawer into a growth engine using intelligence from 200M+ shoppers. With Product Swap, shoppers upgrade to a bigger size, value pack or premium pick in one tap, without leaving the cart. AI-powered upsells serve one-click add-ons at the right moment, while a progress bar and countdown timer nudge shoppers toward free gifts. Fully customizable, RTO-safe and fraud-protected with 24*7 support. The cart built for D2C brands scaling AOV and conversions. GoKwik Cart turns your cart drawer into a growth engine using intelligence from 200M+ shoppers. With Product Swap, shoppers upgrade to a bigger size, value pack or premium pick in one tap, without leaving the cart. AI-powered upsells serve one-click add-ons at the right moment, while a progress bar and countdown timer nudge shoppers toward free gifts. Fully customizable, RTO-safe and fraud-protected with 24*7 support. The cart built for D2C brands scaling AOV and conversions. more Let shoppers swap to bigger sizes, value packs & premium picks in one tap Increase AOV with AI cart upsell showing smart discount bundles in cart drawer Incentivize higher spends using cart progress bar with rewards & free gifts Add urgency signals with sticky footer countdown timer and free shipping tracker Measure impact with analytics tracking upsell & swap revenue and conversion

4.2(Reviews)

Plant trees, remove plastic, and automate donations to 1.3 million non profits. Fully Compliant. Plant trees, remove ocean plastic, and collect charity donations from one Shopify app. Tree planting and plastic removal run automatically via verified partners like Veritree. Customers donate to 1.3M 501(c)(3) non-profits via round-up or a percentage of sales. GoodAPI handles Commercial Co-Venture (CCV) compliance: registrations, contracts, disclosures, and bonds. New for 2026: Win for the planet Add a Donate & Win giveaway to your store. Monthly gift card prizes, promotion for your brand Plant trees, remove ocean plastic, and collect charity donations from one Shopify app. Tree planting and plastic removal run automatically via verified partners like Veritree. Customers donate to 1.3M 501(c)(3) non-profits via round-up or a percentage of sales. GoodAPI handles Commercial Co-Venture (CCV) compliance: registrations, contracts, disclosures, and bonds. New for 2026: Win for the planet Add a Donate & Win giveaway to your store. Monthly gift card prizes, promotion for your brand more Automate tree planting, plastic removal and donations to 1.3 million non-profits Market impact on Home, Product, Cart, Thank You, Order, Checkout & Customer page Verified Trees, plastics and fully compliant with US Cause Marketing Laws Premium library of photos and videos to market your impact Dedicated support team to help you get set up!

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.