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BYOB New inbox in every project
JavaScript Page Builder for Sites
A JavaScript page builder can mean many things, from a drag-and-drop canvas to a framework project. This page is about generating a site when you would rather not write and bundle JavaScript yourself.
Runs on the stack you trust
Prompt to product
From one-line brief to finished app.
Compare the one-line brief with what BYOB ships. Real layout, data, and deploy status, editable from the same workspace.
TD
Team Tasks
Shared task tracking
Today4
Done11
Streak6d
Open live app ↗
Drag the handle. Or focus it and use the arrow keys.
Get inspired
Sites like this, live today.
Real sites that do it well. Build something like this with BYOB.
Fresh from the community
See what builders ship, or start from an example.
Live workspace
Code, chat, and preview in one place.
The workspace is built for repeated product work, not disposable demos. Every generated file stays inspectable, every change is visible, and every follow-up can target the exact part of the app you care about.
01 · EDITOR
Generated code, ready to edit.
Every file BYOB writes stays visible and editable. Follow-ups target the exact lines you care about instead of regenerating from scratch.
- Added lines highlighted the moment they land
Code
Act mode TodoPage.svelte
schema.ts
1
<script lang='ts'>2
type Task = { id: string; title: string; done: boolean
}3
let tasks = $state<Task[]>([])4
5
function toggleTask(id: string) {6
task.done = !task.done // just added by BYOB7
}8
</script> main · 0 problems Preview ready
02 · AI COMMAND
Plan, build, and refine in one chat.
Describe the outcome once. BYOB turns it into a build plan, implements it step by step, and keeps every change visible while you iterate.
- Build plan with live progress you can inspect
B BYOB AI
Chat Act
Your prompt
“Build a todo app for beginners”
Build plan
80%- Task list UI + empty state
- Add + toggle actions
- Progress summary…
Add due dates and filter by done…
03 · LIVE PREVIEW
See every change the second it lands.
The preview updates as BYOB works, with deploy status attached, so the path from edit to production stays inspectable.
- Real app state, not a static mockup
Live preview
/TD
Team Tasks
Shared task tracking
Progress 2 of 3 done
- Wireframe landing page
- Task list component
- Responsive polish + QA
Ask BYOB to refine
Deployed · SvelteKit · SSL on
Prompt to app
From first prompt to a workspace you can ship.
Start conversationally, approve the shape, let Tool Mode implement, then refine and deploy from the same workspace.
- 01 Describe the product Start with the outcome, audience, and any constraints. BYOB turns the idea into a practical build plan.
- 02 Shape the UX Review the proposed flows, screens, data needs, and visual direction before code starts moving.
- 03 Generate the app Tool Mode writes SvelteKit code, connects integrations, and keeps each change visible in preview.
- 04 Test and refine Ask for edits, roll back when needed, run checks, and keep the project editable instead of disposable.
- 05 Deploy Ship the finished app, connect domains, and keep iterating from the same workspace.
Agent and backend
Code with your agent, ship with a real backend.
Connect Codex, Claude Code, or Antigravity to your project, then store data and ship to production without leaving the workspace.
- Approve project access from BYOB
- Installs the byob command
- Preview, deploy, git diff, DNS, credits, and code tools
npmnpx -y byob-cli codex installApprove only the projects your agent can touch, then read context, edit files, inspect diffs, test previews, and roll back from your terminal.
- 1
- prompt to start
- 3
- live panes
- 24/7
- edge preview
Loved by builders
Rated 4.9/5 by developers and founders using BYOB to move from idea to shipped product.
Built for shipping
The parts that usually slow you down are already here.
BYOB handles product planning, implementation, preview, testing, database work, and deployment from one focused interface, with coding-agent access and production analytics when you want to keep working from your own terminal.
This part is hands-on. The cards drift until you touch them. Drag to rearrange, or press and hold one to feel it push back.
Agent integrations
Give Codex, Claude Code, or Antigravity scoped access through BYOB CLI or Agent MCP. Your agent reads context, edits code, tests previews, and deploys from your terminal.
Git history and diffs
Every change lands as a commit. Inspect history, compare diffs, and see exactly what changed since the last deploy.
Inbox in every project
Every project ships with an inbox. Collect messages, leads, and feedback from your app without wiring a third party.
Email sending built in
Send magic links, OTP codes, and transactional mail from your own sender address. Resend-backed, no SMTP setup.
Google and magic-link login
Offer Continue with Google plus passwordless email codes. Sessions and callbacks are handled.
Custom domains and SSL
Point your domain at BYOB with guided DNS checks. Certificates are automatic.
Visual editing
Click any element in the live preview and describe the change. Copy, spacing, color, behavior.
AI testing agent
Run full-site or feature checks and get implementation-level feedback you can apply in one step.
Version rollback
Step between saved states or redeploy a known commit when an experiment goes sideways.
One-click deploy
Builds publish to production hosting in one step. Deploys can auto-save the project state first.
Deployment analytics
Worker traffic, errors, CPU timing, subrequests, and custom-domain status from the workspace.
Supabase aware
Connect Supabase and BYOB reads schemas, drafts migrations, and generates types that match your app.
Team collaboration
Invite people in and keep sessions coordinated so work never overwrites work.
- Vision inputs
- Voice coding
- Project templates
- SEO-ready output
- Context tracking
- Model lock
Simple pricing
Start with credits, upgrade when usage is steady.
Pay as you go when you are exploring. Move to Pro or Max when BYOB becomes part of your regular build workflow.
Pay as you go
$0
$1 = 100 credits
Pro
$25
2,000+ credits/mo
Max
$79
8,000+ credits/mo
Live estimator
What will your app cost?
Try the cost calculator. Drag the pages slider, toggle the options, and watch the agency quote vs BYOB update instantly.
Open full cost calculator →Number of pages: 5
Traditional agency estimate
$5,750 upfront
Yearly maintenance
~$1,150 / year
BYOB estimate
~$45 in credits
BYOB builds the same site from one prompt and hosts it on the edge. Planning estimates, not quotes.
See BYOB plansView full pricing
Need white-label and SSO? Talk to us →
BYOB OnePage generates a site from a prompt without you writing components or configuring a build. The page ships as lightweight, mostly static markup with only the JavaScript it needs, so you get a fast, crawlable page without a framework project.
What a JavaScript page builder can mean
The phrase covers a wide range. It can mean a drag-and-drop canvas that happens to render with JavaScript, a framework project where you write components, or a tool that outputs a static page with a little script for interactivity. Confusing them leads to the wrong tool. If your goal is site of content, the lightest option that ships clean HTML with minimal script is usually the best fit.
JavaScript-rendered pages and search engines
Pages rendered entirely by client-side JavaScript can be harder for crawlers and slower for visitors, because the content arrives only after the script runs. Modern search engines handle this better than they once did, but a content page gains nothing from the risk. Generating mostly static markup with small progressive enhancements means the headline, copy and links are present immediately, which is better for both speed and discoverability.
Generating the page without a build
In a typical JavaScript project you scaffold, install dependencies, configure a bundler and publish. For a site that pipeline is largely incidental. BYOB OnePage takes a written prompt and returns the structure and copy, which you edit visually. Under the hood the project is built on and can be exported, but you never have to set up the toolchain or manage a dependency tree to get the page live.
The JavaScript a content page really needs
Most siters need very little script: a mobile menu, a form submission, perhaps a smooth scroll. Everything else is markup and styling. Keeping that footprint small pays off on mobile connections and improves Core Web Vitals, which are tied to how quickly people see and act on your message. The generated page includes only the behaviour each section requires rather than a framework runtime loaded for a headline.
When you do need real JavaScript
If the page must authenticate users, fetch live data, handle complex forms or render a dashboard, your project is ready for more. The same workspace lets you expand into the full BYOB app builder, which generates a data-backed application rather than a content page. Keeping the marketing page and the application separate lets each stay simple, and the two can share a domain and a visual style without sharing a codebase.
Shipping fast without a toolchain
The appeal of generating the page is that the fastest code is often the code you did not have to write. You describe the site, refine the result and publish to a shareable URL, then connect a domain when you are ready. No node_modules to update, no build failures to debug, no server to configure for a page that is essentially content. When the project becomes an application, the same workspace scales to the full builder.
FAQ
Frequently Asked Questions
Do I need to write JavaScript?
No. You describe the page and edit it visually; the generated output includes only the behaviour it needs.
Is the output static HTML?
It is a -based project that can be exported, so the page is lightweight and mostly server-rendered rather than a heavy client-side app.
Will a JavaScript-heavy page hurt SEO?
A client-rendered page can be harder to crawl and slower to load. Generated content-first markup avoids that.
Can I add custom JavaScript later?
The project can be exported as a ZIP, so you can extend the code if you need bespoke behaviour.
When should I use a framework instead?
When the page needs login, live data or complex interactions; then use the full BYOB app builder.
Build the first version today.
Start with one clear prompt. BYOB will help turn it into a product you can inspect, edit, test, and ship.