How to turn v0 components into a real, working app
What a v0 screen is missing before it's an app, and the steps to get there: one repository, shared components, real data, error states, auth and safe releases.
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A screen generated by v0 is a convincing picture of an app: the layout, the buttons and the sample content are there, but the data is typed into the code, nothing is saved, and the screens don't know about each other. Turning it into a real app means putting all the pieces into one project and repository, removing the duplicated parts, connecting each screen to real data and actions, handling the states real users run into (loading, empty, errors), protecting pages that need a login, and releasing changes through previews instead of straight to production.
This guide takes you through those steps in order, with what to ask v0 for at each one and how to check the result.
What is a v0 component missing?
Compare what you see in the preview with what a user will do:
| In the v0 preview | In a working app |
|---|---|
| A list of six sample items | Whatever is in the database, including zero items or ten thousand |
| A form that looks submitted | Input checked, saved, and an error shown if it fails |
| A dashboard behind a "logged in" avatar | A real session, and pages that refuse visitors without one |
| One screen per chat | Screens that link to each other and share a layout |
| Perfect content lengths | Long names, missing photos, slow networks |
None of this is a flaw in v0. It generates what you describe, and a prototype rarely describes failure. You have to ask for it.
Step 1: Put everything in one project and one repository
If you built your screens in separate chats, start by gathering them. In v0, a Project is one app that several chats can contribute to: they share the deployment, domains and environment variables. Connect new chats to the same Project instead of starting fresh ones.
Then connect the Project to GitHub (project menu, Settings, GitHub, Connect). v0 creates a private repository and pushes the current code. From then on, v0 works on a separate working branch for each chat and publishes through a pull request, so nothing reaches your main branch without a record.
If you already have a codebase and want v0's help on it, use Import from GitHub instead. v0 runs the repository in a sandbox, makes changes on its own branch, and gives each branch a preview deployment.
Step 2: Remove the duplicates
Screens built in different chats tend to bring their own versions of the same things: three slightly different headers, two card components, colours typed as hex values in a dozen files. Before adding features, consolidate:
- Pick one layout (header, navigation, footer) and ask v0 to use it on every page.
- Ask for shared components for the things that repeat (buttons, cards, form fields) and replace the copies.
- Move colours, spacing and fonts into the theme configuration instead of individual files. v0 supports design systems, which help keep later generations consistent.
This step makes every later change cheaper, because a fix lands in one place instead of seven.
Step 3: Connect real data and actions
Replace the sample arrays with reads from a database, one screen at a time, and make every button that should change something actually change it. v0 builds on Next.js, so this code belongs in server components, server actions or API routes. Our guide on adding a database to a v0 app covers choosing a database, keeping secret keys off the browser and protecting each user's rows.
v0's own advice is worth following here: duplicate an existing generation to add logic rather than asking for UI and logic in one prompt, name the libraries you want, and give detailed instructions so it doesn't guess.
Step 4: Handle loading, empty and error states
This is the step that most separates a demo from a product. For every screen that loads data, ask v0 for three extra versions:
- Loading: a skeleton or spinner, so the page doesn't jump when data arrives.
- Empty: what a brand-new user sees. "No projects yet" with a button to create one beats an empty grid.
- Error: a message that says what happened and what to try, instead of a blank page.
For forms, validate twice: in the browser for quick feedback, and on the server because browser checks can be bypassed. A prompt that works: "Validate the signup form on the server with clear messages per field, and keep the user's input when there's an error."
Then test with unkind data: a 200-character company name, a missing profile photo, a slow connection (your browser's developer tools can simulate one).
Step 5: Wire up navigation and protect private pages
Make sure every screen can be reached from somewhere and that links point at real routes, not #. Then add sign-in and decide which pages require it.
Hiding a link is not protection. A page meant for signed-in users must check the session on the server and redirect visitors who don't have one; an admin page must also check the role. Test it by opening the private URL in a private browser window. Our security checklist for AI-built apps has the rest of the list.
Step 6: Check phones and accessibility
v0 output is usually responsive, but check every screen at phone width, especially tables and wide dashboards. Then run the basics: every input has a label, every image a text alternative, everything works with the keyboard alone, and text has enough contrast. Our guide to accessibility basics explains each one.
Step 7: Release through previews, not straight to production
With GitHub connected, each working branch gets its own preview deployment with a unique URL that doesn't touch production. Use it: click through the main flow on the preview, then select Publish, which merges the pull request and waits for the production deployment.
If a build fails, v0 offers Fix with v0 or Fix Build, which reads the logs and tries a fix. If you'd rather understand the error yourself, see our guide on Vercel build failures. And if a change goes wrong, v0 keeps versions: restoring an old one creates a new latest version that you can publish again.
Quick answers
Can I use v0 components in an existing project? Yes. Import the repository with Import from GitHub, and v0 works on a branch of your codebase and opens a pull request.
Is v0 code production-ready? The UI usually is a good start. Data handling, validation, error states, permissions and tests are what you need to add before real users.
Why do my v0 screens look different from each other? They were probably generated in separate chats. Consolidate into one Project with shared layout and components, and use a design system.
How do I stop v0 from breaking production? Connect GitHub so changes go through a working branch and a preview deployment, and only publish after testing the preview.
Want help getting from prototype to product?
If you have the screens and need them to work with real users, our v0 to production service picks up from there, and for a new product our MVP development team can build alongside your designs. You can also run the free health check on a published preview, or tell us what you're building.
