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Custom HTML Shopify Apps

Find top-rated Custom HTML tools for Shopify. Explore 20+ apps with detailed reviews, pricing information, and feature comparisons.

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Protect your store, earn trust and avoid chargebacks with an AI-based Terms and Conditions Checkbox. 'How to add terms and conditions in Shopify?' is a question we're getting asked a lot. Without clear consent, chargebacks and legal risks become real problems. TnC helps with that by adding a mandatory checkbox to your store, making sure customers agree to your policies before checkout. Whether it's a holiday promotion terms or GDPR age verification privacy policy, the checkbox helps you stay protected. One-click installation, works seamlessly with your theme, and builds trust where it matters. 'How to add terms and conditions in Shopify?' is a question we're getting asked a lot. Without clear consent, chargebacks and legal risks become real problems. TnC helps with that by adding a mandatory checkbox to your store, making sure customers agree to your policies before checkout. Whether it's a holiday promotion terms or GDPR age verification privacy policy, the checkbox helps you stay protected. One-click installation, works seamlessly with your theme, and builds trust where it matters. more Require consent for GDPR terms of service, privacy policy, policies and contract Show the checkbox for specific products & countries to meet legal requirements Logs the consent date & time of when the 'I agree to terms' checkbox was ticked Supports contact form, newsletter, login/sign up, footer menu PayPal & Apple Pay Translate the checkbox to multiple languages for multiple markets & geolocations

4.9(Reviews)

Display an "add to cart" buy bar to make it easy for shoppers to purchase from your product pages. If you’re looking to increase your sales and boost revenue, then your solution is Sticky Add to Cart, the app designed not only to increase your conversion rate but also to improve your customers' experience by simplifying the buying process. If you’re looking to increase your sales and boost revenue, then your solution is Sticky Add to Cart, the app designed not only to increase your conversion rate but also to improve your customers' experience by simplifying the buying process. more Display the add to cart buy bar across all of your product pages. Enable 1-click checkout for a faster checkout experience. Quantity Selector that adds multiple items and increases average order value. Fully customizable, no developer needed. Unlimited clicks. 100% compatible with Shopify's Online Store 2.0 themes with 24/7 premium support

4.8(Reviews)

Highly customizable sliding cart drawer with upsells, progress bar, unlockable free gifts and more. Unicart replaces your default cart page with a highly customizable sliding cart drawer. It offers upsells, cross sells, a dynamic sales progress bar, spend tiers to unlock free items, multi language support and more. Unicart can be completely customized to allow for all types of custom features and custom designs. It supports different design templates and you can schedule publish them anytime (Best for sales days). Unicart is developer friendly and can be customised to meet every requirement. Unicart replaces your default cart page with a highly customizable sliding cart drawer. It offers upsells, cross sells, a dynamic sales progress bar, spend tiers to unlock free items, multi language support and more. Unicart can be completely customized to allow for all types of custom features and custom designs. It supports different design templates and you can schedule publish them anytime (Best for sales days). Unicart is developer friendly and can be customised to meet every requirement. more Cross-sell and upsell by showcasing relevant products based on items in the cart Sales progress bar to motivate customers to spend more to unlock special rewards Allow customer's to unlock free items in their cart at specific spend tiers Access to completely customize the cart to your exact design and function needs Supports subscriptions, integrates with apps like PageFly, BOLD, Shogun and more

5.0(Reviews)

Upcart — custom slide cart with full design control to increase AOV and reduce cart abandonment Unlike basic cart drawer apps, Upcart turns your cart into a revenue-driving touchpoint with in-cart upsells, cross-sells, rewards, and add-ons—without redirecting shoppers or requiring multiple apps. Designed for fashion, food & beverage, beauty, and other DTC brands, Upcart matches your storefront and works seamlessly across desktop and mobile. Unlike basic cart drawer apps, Upcart turns your cart into a revenue-driving touchpoint with in-cart upsells, cross-sells, rewards, and add-ons—without redirecting shoppers or requiring multiple apps. Designed for fashion, food & beverage, beauty, and other DTC brands, Upcart matches your storefront and works seamlessly across desktop and mobile. more Increase AOV with in-cart upsells and cross-sells for frequently bought items Fully customize cart design with custom templates using HTML, CSS, and JSX Incentivize higher spend with rewards, progress bars, and free shipping goals Boost conversions with in-cart discounts and free gifts Reduce friction with a sticky slide cart that stays visible across your store

4.6(Reviews)

Show sticky add to cart buttons on your product pages. This increases sales and reduces abandonment. Allow your customers to quickly add to cart and buy your products. Lengthy product info can make add to cart buttons hard to find. However, a sticky add to cart is always highly visible. So your customers can buy now, add to cart and checkout faster. Our one click install saves time by adding a sticky add to cart that seamlessly integrates into your store. Use our built in reporting to easily see your sales increases and use with your Google Analytics and Facebook Pixel. Allow your customers to quickly add to cart and buy your products. Lengthy product info can make add to cart buttons hard to find. However, a sticky add to cart is always highly visible. So your customers can buy now, add to cart and checkout faster. Our one click install saves time by adding a sticky add to cart that seamlessly integrates into your store. Use our built in reporting to easily see your sales increases and use with your Google Analytics and Facebook Pixel. more Automatically match your store theme with high converting styles. Use our button Animator to attract more attention and 'move' the button. Display at the top or bottom and customize text. Visible and responsive to your customers on mobile, desktop & tablet. Unlimited impressions and clicks included.

4.8(Reviews)

Automatically price your customers' multiple uploaded files, images with various conditions. With Upload Center, you can effortlessly offer custom products like personalized phone cases, t-shirts with unique designs, engraved jewelry, custom printed guitar picks, or DTF gang sheet. Our seamless file upload fields make it effortless for customers to bring their ideas to life, while our powerful features streamline your workflow and improves customer satisfaction. With Upload Center, you can effortlessly offer custom products like personalized phone cases, t-shirts with unique designs, engraved jewelry, custom printed guitar picks, or DTF gang sheet. Our seamless file upload fields make it effortless for customers to bring their ideas to life, while our powerful features streamline your workflow and improves customer satisfaction. more Fully customizable multiple upload fields with different conditions. Automatic price calculation based on height or inch square. (PNG & PDF support) Ability to upload multiple files and set the quantity per file. Restore uploaded files even if the product page is closed. Automatically rename the file according to a specified rule.e.g #1002_john_a.png

5.0(Reviews)

One click upsell and cross sell. Display frequently bought together product upsell & bundles. Add bundle, upsell and cross sell offers from the homepage to checkout, and beyond. The Max LimeSpot Personalizer adds personalization to every product recommendation & 'bought together' bundle. Use our AI bundle builder to create cart upsell, post purchase upsell, or bundle upsell offers. Our tools generate powerful upsell recommendations, cross sell, bundles, and related product suggestion for a quick upsale at checkout. Easily migrate from Addly, Bundler, Selleasy, Aftersell, FBP, or Zoorix. Add bundle, upsell and cross sell offers from the homepage to checkout, and beyond. The Max LimeSpot Personalizer adds personalization to every product recommendation & 'bought together' bundle. Use our AI bundle builder to create cart upsell, post purchase upsell, or bundle upsell offers. Our tools generate powerful upsell recommendations, cross sell, bundles, and related product suggestion for a quick upsale at checkout. Easily migrate from Addly, Bundler, Selleasy, Aftersell, FBP, or Zoorix. more Get a smart product recommendation on any page with an upsell & cross sell offer Personalize every bundle & upsell offer with the LimeSpot Max Personalizer Boost AOV with bought together bundles & related product suggestions at checkout Create a cart upsell or bundle upsell with a data-driven product recommendations Add a post-purchase bundel or upsell offer after checkout, with one-click setup

4.6(Reviews)

All In One Upsell app is designed to Boost Sales & AOV & encourage customers to buy more. The Essentialwolf Upsell & Cross Sell app is increase sales & AOV & user friendly with full customization tools for any business looking to increase their sales and AOV. Create highly targeted, personalized upsell funnels tailored to your customers’ preferences and spending habits—driving higher conversions and bigger sales. Plus, with real-time insights into customer behavior, you can easily track spending patterns and build even more effective upsell funnels. The Essentialwolf Upsell & Cross Sell app is increase sales & AOV & user friendly with full customization tools for any business looking to increase their sales and AOV. Create highly targeted, personalized upsell funnels tailored to your customers’ preferences and spending habits—driving higher conversions and bigger sales. Plus, with real-time insights into customer behavior, you can easily track spending patterns and build even more effective upsell funnels. more Display on product, cart, post-purchase, checkout and thanks you page. Support AI & Manual mode to personalized Upsell Funnel. Suggest related products to customers to increase the likelihood of a sale. Choose different types of layout and easy to customizable. In depth data analytics, track customer history, unlimited settings & many more.

4.8(Reviews)

Supercharge AOV and Revenue with Pre and Post Purchase One-Click Upsells. Inspire your customers to add related products/accessories across Product page, Cart and Thank you pages, and increase units per transaction. On Shopify Plus? You can supercharge your Checkout page with upsells and progress bar. Watch incremental revenue grow with our real-time analytics and fine tune your offers by A/B testing across customer journey. Inspire your customers to add related products/accessories across Product page, Cart and Thank you pages, and increase units per transaction. On Shopify Plus? You can supercharge your Checkout page with upsells and progress bar. Watch incremental revenue grow with our real-time analytics and fine tune your offers by A/B testing across customer journey. more Create Post Purchase One-Click Upsells (single & multi-product) Upsell everywhere: Product page, Cart, Thank You page Supercharge Checkout page with upsells and more (Shopify Plus Exclusive) Customize Thank You & Order Status page: Upsells, Surveys & more Customizable Slide Cart, seamless branding driving high conversion rates

5.0(Reviews)

Upsell Cart App to Improve AOV - Discounts, Free Shipping, Cross Sell & Quick Slide Cart Upsell cart helps you highlight additional products to customers as they add items to their cart which may increase your AOV. Our Quick Upsell app helps you turn every cart into a bigger sale — all before checkout. With features like upsell cart, popup cart & mini cart drawer, you can show smart product suggestions and irresistible discounts right when shoppers are most likely to buy. The cart widget makes it easy to add pre-purchase offers without interrupting the shopping flow. Upsell cart helps you highlight additional products to customers as they add items to their cart which may increase your AOV. Our Quick Upsell app helps you turn every cart into a bigger sale — all before checkout. With features like upsell cart, popup cart & mini cart drawer, you can show smart product suggestions and irresistible discounts right when shoppers are most likely to buy. The cart widget makes it easy to add pre-purchase offers without interrupting the shopping flow. more One-click upsells in the mini cart or popup cart to encourage bigger orders. Custom discounts that work with Shopify’s multiple discount combinations Pre-purchase upsell offers based on what’s already in the cart. Rewards Progress Bar: Motivate customers to spend more by showing spending goals Product recommendations using Shopify’s AI or your own chosen items.

4.3(Reviews)

Upsell effectively using AI: Automate in-cart upsells, checkout upsells & bundles to boost sales. Upsell Wizard transforms your sales with AI-driven upselling and cross-selling. Master in-cart upselling, checkout upsells, and post-purchase offers with ease. Boost your average order value through strategic upsell funnels, offering discounted upsells and 'buy x get y' deals. Enjoy hassle-free setup as Upsell Wizard's AI automates compelling product suggestions and upsell opportunities. Perfect for smooth, intelligent upselling. Questions? Our US-based support team is here to help. Upsell Wizard transforms your sales with AI-driven upselling and cross-selling. Master in-cart upselling, checkout upsells, and post-purchase offers with ease. Boost your average order value through strategic upsell funnels, offering discounted upsells and 'buy x get y' deals. Enjoy hassle-free setup as Upsell Wizard's AI automates compelling product suggestions and upsell opportunities. Perfect for smooth, intelligent upselling. Questions? Our US-based support team is here to help. more Upsell and cross sell related products, different variants, and bundles. Trigger upsell offers with specific variants, products, tags or collections. Supports "buy X get Y" discounts and free products. Translate everything your customers see into the language of your choosing. Built to work with Shopify's native discount system & new post-purchase flows.

4.2(Reviews)

This Black Friday,maximize sales by offering personalized items tailored to your customers behaviour Upselly is the ultimate upsell and addon items app for Shopify stores. With targeted upsell suggestions on the product page, you can increase your sales and revenue effortlessly. Upselly helps you create personalized offers based on customer behavior and purchase history, with both manual and automatic suggestions. Track upsell performance with analytics and reporting features to make data-driven decisions for your sales strategy. Get up and running with intuitive user interface in no time. Upselly is the ultimate upsell and addon items app for Shopify stores. With targeted upsell suggestions on the product page, you can increase your sales and revenue effortlessly. Upselly helps you create personalized offers based on customer behavior and purchase history, with both manual and automatic suggestions. Track upsell performance with analytics and reporting features to make data-driven decisions for your sales strategy. Get up and running with intuitive user interface in no time. more Automatically match the color of selected recommended product to your theme Display price and discounted price on the product page with recommended products Manual recommendations: fine-tune manually the recommendations for each product Cart page upsell

4.3(Reviews)

AI cart upsell: Post purchase upsell, checkout upsell, thank you page upsell, volume discount & more Vanga AI automates any upsell for a rapid one click upsell experience! A fully custom cart with CSS-open helps you tailor it to your store. Make your cart upsell, cross sell, checkout upsell, post purchase upsell etc consistent with your store needs. Avoid checkout blocks & watch customers come back to rebuy! Boost AOV with an order bump & selleasy with any AI-based upsell: one click upsell, cart upsell, post purchase upsell, checkout upsell, cross sell and more! Install, enable upsells and win! Vanga AI automates any upsell for a rapid one click upsell experience! A fully custom cart with CSS-open helps you tailor it to your store. Make your cart upsell, cross sell, checkout upsell, post purchase upsell etc consistent with your store needs. Avoid checkout blocks & watch customers come back to rebuy! Boost AOV with an order bump & selleasy with any AI-based upsell: one click upsell, cart upsell, post purchase upsell, checkout upsell, cross sell and more! Install, enable upsells and win! more Bump orders with cart upsell, cross sell, checkout upsell, thank you page upsell Boost user confidence with trust badges & the option to add order notes to cart Reconvert carts with checkout upsell, cart upsell, one click upsell & cross sell Tailor your store with pre-order, custom pre-order message & a fully custom cart Integrations with Klaviyo & Kaching bundles: cart upsell + cross sell with ease

4.6(Reviews)

Showcase every variant’s unique details – metafields included. Make complex products clear. With Variant Description OMG you can now add a description for each variant. 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, and differentiate between different kits or combo packages⁠—there are many use cases. This app is the solution for complex products, designed to enhance your product pages. With Variant Description OMG you can now add a description for each variant. 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, and differentiate between different kits or combo packages⁠—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 and display variant metafields Use your own custom variant metafield and show shipping times or specifications No coding require. Easy installation for both Online Store 2.0 and Legacy themes Rich full text editor that supports images, videos, links, tables and many more Bulk import and export

5.0(Reviews)

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)

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

4.5(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)

A/B Testing With AI. Personalize & A/B Test Price, Offer, Theme, Upsell. Scale CRO With AB Testing AI-powered A/B testing, split testing, and personalization. With Visually AI, test every stage of the shopper journey: AB test homepage, PDPs, carts, A/B test checkouts and post-purchase upsells. 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 and reduce dev time. Migrate from abconvert, vwo, shogun AB test, intelligems or shoplift. AI-powered A/B testing, split testing, and personalization. With Visually AI, test every stage of the shopper journey: AB test homepage, PDPs, carts, A/B test checkouts and post-purchase upsells. 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 and reduce dev time. Migrate from abconvert, vwo, shogun AB test, intelligems or shoplift. more A/B testing in minutes: Generate, edit and launch an AB test using Visually AI Personalize by segment using catalog + behavior signals, Optimize with AB tests Leverage advanced A B testing statistical tech via powerful AB testing analytics Run a split test to max conversion rate on themes, discounts, prices & shipping Ensure no flickering and high page speed using an AB test-focused architecture

4.7(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)

AI Recommendations with Frequently Bought, Related, In Cart Upsell Post Purchase Upsell & more With Wiser, you can showcase AI based Recommended Products on all the pages of your store to upsell. It includes upsell and cross sell widgets like Frequently bought together, Product Addons, Slide Cart Drawer, Checkout Upsell, Search discovery, Recently Viewed Products & Shop the Look. Increase conversion rate by these AI powered upsell features. Track performance easily in analytics, use APIs for integrations & personalization by this Upsell app. Cross sell & upsell bundles With Wiser, you can showcase AI based Recommended Products on all the pages of your store to upsell. It includes upsell and cross sell widgets like Frequently bought together, Product Addons, Slide Cart Drawer, Checkout Upsell, Search discovery, Recently Viewed Products & Shop the Look. Increase conversion rate by these AI powered upsell features. Track performance easily in analytics, use APIs for integrations & personalization by this Upsell app. Cross sell & upsell bundles more Show frequently bought together with Upsell and cross sell bundles Product Search & discovery, Related products, Rule sets, customizations & more Advanced drawer cart with in cart upsell & free shipping progress bar & discount Increase AOV by post purchase Upsell, Checkout Upsell & Product Addons Supports Shopify Markets, multicurrency & multilangauge.

4.9(Reviews)

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About Custom HTML Apps for Shopify

Custom HTML 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 html 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 html solutions available in the Shopify App Store. Each has been selected based on its functionality, user ratings, and overall value for Shopify merchants.