Getting started
Do I need to download or install any software to use Bolt?
Do I need to download or install any software to use Bolt?
No. Bolt is a browser-based tool. Sign up at bolt.new and start building right away. No setup or installation is required, but we recommend you use a supported browser for the best experience.
What's the difference between Bolt and StackBlitz?
What's the difference between Bolt and StackBlitz?
Bolt is an AI-powered builder for websites, web apps, mobile apps, and prototypes. StackBlitz is the company behind Bolt and WebContainers, the technology that lets Bolt run entirely in your browser.Bolt also links with StackBlitz for account and project management, so some account actions, like resetting your email, happen through StackBlitz.
How Bolt works
What are WebContainers, and how does Bolt use them?
What are WebContainers, and how does Bolt use them?
Bolt runs on WebContainers, a browser-based technology built by StackBlitz that runs a full development environment directly in your browser. This is why Bolt doesn’t require any installation or local setup, and why it works the same way on Windows, Mac, or any other operating system.For the technical details behind WebContainers, see the StackBlitz developer documentation.
Does Bolt have an API?
Does Bolt have an API?
Bolt doesn’t currently have a public API, CLI, or SDK to control it programmatically from outside the product.
Building
Can I build a mobile app with Bolt?
Can I build a mobile app with Bolt?
Yes. Bolt can build mobile apps using the Expo integration. Include the words
mobile app in your first prompt so Bolt sets up an Expo-compatible project from the start.See Expo for setup steps and details.How do I add sign-up and login to my app?
How do I add sign-up and login to my app?
You can ask Bolt with a prompt like this:
Create user accounts via email sign-up and login, then add account log in/log out buttons in the top right corner of the home page. This allows Bolt to authenticate users, which requires your project to have a database. If it doesn’t already, you’ll see that Bolt sets one up.See Add login and sign-up to your app for the full example, and Authentication to control how users sign in (for example, using email or Google).Why did Bolt only build part of what I asked?
Why did Bolt only build part of what I asked?
This usually happens when one large prompt asks for too many changes at once. Break big requests into a series of smaller prompts, or use Plan Mode to work out a build strategy with Bolt before it writes any code.See Bolt didn’t do everything you asked in your prompt and Plan Mode.
How do I undo a change or restore an earlier version?
How do I undo a change or restore an earlier version?
Bolt automatically saves a version of your project after every prompt that processes. You can restore an earlier version from Version History.See Version History for the full steps.
How do I publish my project?
How do I publish my project?
Open the Publish menu and click Publish. Bolt hosts your site for free at a
bolt.host address, and using the Publish button itself doesn’t use any tokens.See Publish your project for the full steps, including how to publish your site as private.Troubleshooting
My preview shows a blank, gray, or white screen. How do I fix it?
My preview shows a blank, gray, or white screen. How do I fix it?
- Hard refresh the page:
- On Mac, press Cmd + Shift + R.
- On Windows, press Ctrl + Shift + R.
- Try opening the project in a new tab.
- If the preview still doesn’t show, prompt Bolt:
The preview is not showing, fix this.
Does closing the browser tab delete my project?
Does closing the browser tab delete my project?
No. Closing your browser tab doesn’t affect the work you’ve done in Bolt. Go back to Bolt, and in the left sidebar, click Projects. This shows all the projects you’ve created.If you still can’t find it, see Project missing after signing in for more troubleshooting steps.
Accounts and subscriptions
What's included in the Free plan?
What's included in the Free plan?
The Free plan lets you build and publish projects at no cost, with a few limits. The Free plan is best for small personal projects and experimenting with AI development.
- Tokens: You get 300K tokens per day, up to a maximum of 1 million tokens a month. Unused tokens don’t roll over. The 300K daily token limit refreshes each day.
- Hosting: You can publish projects to a free
bolt.hostURL, with up to 10 GB of bandwidth and 333,333 web requests per month. There’s no way to increase these limits, so if you go over this usage, your site goes offline for the rest of the month. See Bolt Cloud hosting plans for details. - Branding: Free plan projects show a Made in Bolt badge on the published site. Upgrading to a paid plan removes the badge.
- Custom domains: Custom domains aren’t available on the Free plan.
- Databases: There’s no limit to how many databases you can have on the Free plan.
- Collaboration: You can share your projects with others and give them viewer, editor, or co-owner access. Collaborators who edit the project use tokens from their own account.
Can I get a refund?
Can I get a refund?
Bolt subscriptions are non-refundable, as stated in Bolt’s Terms of Service. Contact [email protected] if you have questions about your subscription.
How do I cancel my Bolt subscription?
How do I cancel my Bolt subscription?
You can cancel your subscription at any time. Your plan stays active until the end of your current billing period, then cancellation takes effect at the start of your next billing period.See Cancel a subscription for the full steps. For problems with or questions about canceling, contact support.
How do I delete my Bolt account?
How do I delete my Bolt account?
You can delete your account by signing in to StackBlitz, then going to Settings > Profile > Delete my account.See Delete your account for the full steps.Deleting your account is permanent and deletes the projects in your account as well.