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BYOB New inbox in every project

HTML Website Builder

The phrase HTML website builder covers two very different products: a visual editor that hides its output, and a tool that produces a real web project. BYOB is the second kind. It generates a frontend from a description and leaves the code, styles and components accessible.

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

Online
Today4
Done11
Streak6d
Open live app ↗
Prompt Product

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.

Playground website
Playground Childcare software with a warm, direct hero. Visit ↗
ClickUp website
ClickUp Productivity suite with product-led sections. Visit ↗
Evernote website
Evernote Notes app with a memorable second-brain pitch. Visit ↗
LlamaIndex website
LlamaIndex Enterprise AI with a confident hero. Visit ↗
Cofounder website
Cofounder Agent startup with a playful, clear page. Visit ↗
Startup website
Startup Landing-page builder with strong templates. Visit ↗

Fresh from the community

See what builders ship, or start from an example.

View showcase →

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'>
2type Task = { id: string; title: string; done: boolean }
3let tasks = $state<Task[]>([])
4
5function toggleTask(id: string) {
6task.done = !task.done // just added by BYOB
7}
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

Online
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.

  1. 01 Describe the product Start with the outcome, audience, and any constraints. BYOB turns the idea into a practical build plan.
  2. 02 Shape the UX Review the proposed flows, screens, data needs, and visual direction before code starts moving.
  3. 03 Generate the app Tool Mode writes SvelteKit code, connects integrations, and keeps each change visible in preview.
  4. 04 Test and refine Ask for edits, roll back when needed, run checks, and keep the project editable instead of disposable.
  5. 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
npm
npx -y byob-cli codex install

Approve 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.

Rated 4.9/5 by builders shipping with BYOB.

Start building
  • Clean SvelteKit code you own
  • One-click deploy + rollback
  • Pay as you go pricing

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

Popular

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 plans
View full pricing

Need white-label and SSO? Talk to us →

An HTML website builder creates the HTML, CSS and JavaScript behind your pages. BYOB generates a real project from a description, renders standard HTML in the browser, and gives you a visual editor for speed plus a code editor for control. Deploy it in one click or export the source as a ZIP.

What the generated output actually is

BYOB does not fill a proprietary canvas and export a screenshot. It writes a project: routes, components, styles and scripts that a browser receives as ordinary HTML, CSS and JavaScript. compiles components into efficient client code, and the server renders pages first so visitors get content quickly. For developers this matters because the result slots into normal tooling - a code editor, a version control workflow, and the same publishing options as any modern web project.

From description to project structure

Describe the pages you want - home, services, about, contact - and BYOB creates the routes and links between them. It drafts headings, copy and section layouts, then wires navigation so the pages behave like a site rather than loose files. You can ask it to add a page, rename a route or change a template, and it edits the project rather than regenerating everything. That incremental approach keeps earlier refinements intact while the structure grows.

Editing markup and components

Quick changes happen in the visual editor: select an element, change the text or spacing, and the corresponding component updates. Deeper work happens in the code editor, where you can edit markup, adjust CSS, add a script or introduce a custom component. If you prefer to bring your own snippets, paste them in and ask BYOB to integrate them. This mix is useful because not every change deserves a prompt, and not every developer wants a visual-only workflow.

Deploying or exporting the site

The generated project publishes to the edge in one click, and you can attach a custom domain from the same dashboard. If your team has its own infrastructure, export the project as a ZIP and host it on any platform that runs a modern JavaScript build. Nothing about the generated code assumes it must stay inside BYOB, which lowers the risk of choosing the tool in the first place. You can start visually and move to a self-managed workflow later.

Who benefits from a code-first builder

Founders who want to ship without wiring a stack, agencies that need to hand over maintainable code, and developers who would rather start from a working project than a blank folder all fit this model. The common thread is wanting output they can keep. A classic HTML builder gives you a page; BYOB gives you a page and the code behind it, so the same artifact serves marketing today and product work tomorrow.

FAQ

Frequently Asked Questions

Does BYOB generate plain HTML files?

It generates a project that renders standard HTML, CSS and JavaScript. The source uses components rather than a folder of hand-written.html files, but it builds to output you can host anywhere.

Can I edit the HTML directly?

Yes. Open the code editor to change markup, styles or scripts, or ask BYOB in chat to make the change for you.

Can I host the result outside BYOB?

Yes. Export the project as a ZIP and run the build on your own publishing, or publish it through BYOB with one click.

Do I need to know?

No. Prompts and the visual editor cover most work. Knowing helps if you want to write custom components or tune the build yourself.

Is the generated code readable?

Yes. It is ordinary project code with components and styles, not minified output held behind a platform.

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.