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BYOB New inbox in every project

From Site CodePen to a Live Site

CodePen is where a lot of site website ideas get their first draft. This page explains what a pen cannot do, and how BYOB OnePage takes the same idea to a published, editable page you own.

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.

Holocene website
Holocene Supply-chain page with calm, clear sections. Visit ↗
Outseta website
Outseta Membership platform with a launch-focused page. Visit ↗
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 ↗

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 →

CodePen is a browser playground for HTML, CSS and JavaScript that is ideal for prototyping, but pens are not production sites: no custom domain, no backend, and limited SEO. BYOB OnePage turns the same site idea into a generated, editable site you can publish and export.

What CodePen is genuinely good at

CodePen is a browser playground for HTML, CSS and JavaScript, and it is excellent at what it does: fast experiments, sharing a minimal reproduction, and learning by editing other people's pens. For a site layout, a pen is a great place to sketch a hero, test a scroll effect, or try a technique. It removes setup friction, which is exactly what a prototype needs.

Why a pen is not a live website

A pen runs inside CodePen's viewer and is not a production site. It has no custom domain, no server-side logic, no database, and no proper SEO controls, and its embed is designed for demonstrations rather than visitors. Visitors also see CodePen's interface around the preview. For a client page, a launch, or anything you need to rank and own, the pen is the sketch and not the building.

Moving a pen idea into a real page

The useful move is to treat the pen as a specification. Note the layout, the type scale, the interaction and the copy, then rebuild it as a genuine page rather than pasting the pen wholesale. BYOB OnePage generates a complete site from a prompt, so you can reproduce the idea structurally and then edit it visually or in plain language, without carrying CodePen's demo constraints into production.

Editing beyond HTML and CSS

Pens are code-first. A generated page is content-first: you edit headings, sections, images and buttons directly, and ask for changes in everyday language. That is friendlier to the people who usually maintain a marketing page, and it means updating a headline does not require finding the right line of markup. You can still go deep on the code later if you want to.

Exporting and hosting the result

Where a pen depends on CodePen's hosting, a generated page can be published directly and its code exported. That means you can put it on your own domain, keep it in a repository, and deploy it to any host that runs a SvelteKit build. The pen served its purpose as a prototype; the site you ship is the one you control.

Use pens for inspiration, not infrastructure

The healthy relationship is to enjoy CodePen as a source of ideas and a place to test small things, while keeping your actual site on infrastructure you own. Browse pens for a scroll animation, adapt the technique, and implement it in your page. Treat the playground as a workshop and the published site as the product, and you get the best of both.

FAQ

Frequently Asked Questions

Can I host a CodePen as my website?

Not as a real site. Pens lack custom domains, server-side logic and proper SEO, and they run inside CodePen's viewer.

Can I use CodePen code in BYOB OnePage?

You can reuse the ideas and techniques. Rebuild them in the generated page rather than pasting the pen as-is.

Does CodePen support custom domains?

No. To use your own address you need to move the page to hosting you control.

Is CodePen good for SEO?

No. Pens are demo embeds, so indexability and metadata controls are limited compared with a real hosted page.

What should I build from a pen idea?

A complete site: generate it with BYOB OnePage, apply the design idea, and publish it on your own domain.

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.