--- title: How to Create a Scalable KYC Onboarding Flow in React... description: A step-by-step build of a three-step KYC onboarding flow in React using Shadcn UI components: a radio group for account type, a drag-and-drop file upload zone,... canonical: https://daily.dev/posts/how-to-create-a-scalable-kyc-onboarding-flow-in-react-with-shadcn-ui-frs5dffrc twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to Create a Scalable KYC Onboarding Flow in React with Shadcn UI | daily.dev og:description: A step-by-step build of a three-step KYC onboarding flow in React using Shadcn UI components: a radio group for account type, a drag-and-drop file upload zone,... og:url: https://daily.dev/posts/how-to-create-a-scalable-kyc-onboarding-flow-in-react-with-shadcn-ui-frs5dffrc og:image: https://api.daily.dev/og/posts/FrS5DFFrC.png og:image:alt: How to Create a Scalable KYC Onboarding Flow in React with Shadcn UI og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How to Create a Scalable KYC Onboarding Flow in React with Shadcn UI **[freeCodeCamp](https://daily.dev/sources/freecodecamp)** · 14 min read · 6 upvotes · 0 comments ## Summary A step-by-step build of a three-step KYC onboarding flow in React using Shadcn UI components: a radio group for account type, a drag-and-drop file upload zone, an alert-plus-progress-bar verification status, and a stepper to tie it together. Covers real component code, validation logic shared between drag and click upload paths, accessibility details (aria-current, sr-only legends, aria-hidden icons), and using an MCP server with v0/Bolt/Lovable to scaffold the initial draft from the Shadcn Components free set. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I validate file uploads for both drag-and-drop and click-to-browse in a React file upload component? Use a single shared validation function called from both the file input's onChange handler and the drop zone's onDrop handler, so both paths enforce identical rules. In a KYC document upload example, the function checks the MIME type or file extension for PDF or CSV, and rejects files larger than 10 MB, returning an error string that renders as an alert. _Developers wiring up upload validation logic can find grounded React examples like this through daily.dev._ ### Should I use Radix UI or Base UI as the primitive library behind Shadcn UI components? Most of the Shadcn UI ecosystem defaults to Radix UI, but Base UI is a solid alternative and can be used instead. Mixing Radix-based and Base UI-based components in the same project generally works, but it means relying on two different unstyled primitive libraries at once, so it's worth checking which primitive library a given component set targets before combining sources. _When comparing UI primitive libraries for a project, developers track these tradeoffs on daily.dev._ ### What is an MCP server used for when scaffolding a UI with an AI coding assistant like v0? An MCP (Model Context Protocol) server exposes a component library to an AI coding assistant as callable tools, so the assistant queries the server for the real, current component API instead of guessing names and props from training data. This matters when several similarly named component sets exist, since it lets tools like v0, Bolt, or Lovable generate accurate output via a shared MCP prompt. _Developers evaluating MCP-driven scaffolding workflows can compare approaches on daily.dev._ ## Similar posts on daily.dev - [How to Build an Open Source SaaS Landing Page Template with shadcn/ui](https://daily.dev/posts/how-to-build-an-open-source-saas-landing-page-template-with-shadcn-ui-skzpt3hrd) · freeCodeCamp · 7 upvotes · 0 comments - [Shadcn UI adoption guide: Overview, examples, and alternatives](https://daily.dev/posts/shadcn-ui-adoption-guide-overview-examples-and-alternatives-0pr6z5eli) · LogRocket · 1 upvotes · 0 comments - [How to Use Shadcn Select Components in React & Next.js Projects](https://daily.dev/posts/how-to-use-shadcn-select-components-in-react-next-js-projects-rxdrvxe9r) · C\# Corner · 3 upvotes · 1 comments - [Build a Kanban Board With Drag-and-Drop in React with Shadcn](https://daily.dev/posts/build-a-kanban-board-with-drag-and-drop-in-react-with-shadcn-qjknskkwi) · marmelab · 4 upvotes · 0 comments - [How to Build an Animated Badge Component with shadcn/ui](https://daily.dev/posts/how-to-build-an-animated-badge-component-with-shadcn-ui-eymgvkmv9) · freeCodeCamp · 10 upvotes · 2 comments --- Tags: [#react](https://daily.dev/tags/react), [#nextjs](https://daily.dev/tags/nextjs), [#accessibility](https://daily.dev/tags/accessibility), [#shadcn](https://daily.dev/tags/shadcn) [View this post on daily.dev](https://daily.dev/posts/how-to-create-a-scalable-kyc-onboarding-flow-in-react-with-shadcn-ui-frs5dffrc) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How to Create a Scalable KYC Onboarding Flow in React with Shadcn UI","url":"https://daily.dev/posts/how-to-create-a-scalable-kyc-onboarding-flow-in-react-with-shadcn-ui-frs5dffrc","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-to-create-a-scalable-kyc-onboarding-flow-in-react-with-shadcn-ui-frs5dffrc"},"datePublished":"2026-08-13T21:05:22.747Z","dateModified":"2026-09-13T19:19:42.871Z","description":"A step-by-step build of a three-step KYC onboarding flow in React using Shadcn UI components: a radio group for account type, a drag-and-drop file upload zone,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/08e3b940f5f32fa684c26bc6884bf33b?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/08e3b940f5f32fa684c26bc6884bf33b?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"freeCodeCamp","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"freeCodeCamp","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1628412854/logos/freecodecamp","url":"https://daily.dev/sources/freecodecamp"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/how-to-create-a-scalable-kyc-onboarding-flow-in-react-with-shadcn-ui-frs5dffrc","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":6},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"react,nextjs,accessibility,shadcn","timeRequired":"PT14M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"freeCodeCamp","item":"https://daily.dev/sources/freecodecamp"},{"@type":"ListItem","position":3,"name":"How to Create a Scalable KYC Onboarding Flow in React with Shadcn UI"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/how-to-create-a-scalable-kyc-onboarding-flow-in-react-with-shadcn-ui-frs5dffrc#faq","mainEntity":[{"@type":"Question","name":"How do I validate file uploads for both drag-and-drop and click-to-browse in a React file upload component?","acceptedAnswer":{"@type":"Answer","text":"Use a single shared validation function called from both the file input's onChange handler and the drop zone's onDrop handler, so both paths enforce identical rules. 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