The short version
Founders have one currency: time. The marketing site falls between product development, fundraising, hiring, and sales every week — and the cost is real, because every demo day, every paid ad campaign, every cold-outbound email points back at a site that should look like a company exists.
Website Killer compresses the marketing-site build from a multi-week ticket into a 10-minute prompt. Founders ship the site between meetings, iterate via chat-edit when positioning sharpens, and export the source code when they hire the first designer. Free forever for the first 5 iterations; $14/mo when you ship to a real domain.
What this isn't: a replacement for a brand system at series-B. It is the right tool from pre-seed through series-A, when the marketing site has to ship without taking the only engineer off the roadmap. After series-A, most founders keep the same site and add a designer to polish it.
The job to be done
I have a deck, a domain, and a deadline. I need a site that makes us look like a real company, in the time between two meetings.
Why other AI builders fall short for this job
- Visual canvas tools take weeks of work you don't have
- Component-only AI tools give you parts, not a finished site
- AI app builders are overkill — you don't need a full app, you need a marketing page
- Hiring a freelancer means another invoice and another week
- WordPress means hosting + plugins + security patches you don't have time for
What Website Killer ships for founders
- A finished, conversion-grade marketing site in under 30 minutes
- Custom domain with SSL — your real domain, not *.something.app
- Hero, social proof, features, pricing, FAQ, contact — all wired
- Source code export so you keep optionality on day one
- Free forever tier so the first 5 iterations cost zero
- Chat-edit when positioning sharpens (and it will, weekly)
- Built-in technical SEO from launch (schema, sitemap, sub-1.5s LCP)
Where this fits
Real-world scenarios
Demo day
You're presenting at Y Combinator demo day next Tuesday. The current site is a Notion page with a Stripe Payment Link. You generate a real marketing site Sunday night, iterate Monday morning, and walk into demo day with a site that looks like a series-A company.
First paid ads
You're about to spend $5K on Meta to test a new positioning. The hero copy and the ad copy have to match, or the ad-platform quality score tanks and CPL doubles. Generate the landing page from the same brief as the ad, ship in an hour, run the test.
Investor warm intro
A warm intro to a series-A fund is coming through next week. The current site reads pre-seed. Iterate the hero, add the right social-proof logos, surface the recent customer wins as a 'momentum' section. Same URL, materially better first impression.
Cold outbound
You're about to send 200 personalized outbound emails. Half the prospects will click the domain. The site has to answer 'what does this company do, who's it for, what does it cost' in 30 seconds — Website Killer's default structure handles all three by default.
Worked examples
Prompts that work
Three prompts you can adapt for your work. The more concrete the prompt, the less editing afterward.
Pre-seed SaaS marketing site
Marketing site for Folder, a meeting-notes app for product managers. Pre-seed. Hero: 'Eliminate the post-meeting transcription tax.' Three benefits: 30-second meeting summaries, automatic action-item routing into Linear, Slack-thread context. Pricing: $20/user/mo with 14-day free trial, no credit card. Customer logos (placeholders for permission): Linear, Notion, Vercel. CTA: start free trial. Style: linear-clean.
Why this works · Pre-seed prompts should name pricing + customer-logo placeholders. The AI uses the names for the social-proof block (with permission flag the founder reviews before publishing).
Coming-soon waitlist page
Pre-launch page for Cardinal, an AI personal-finance app launching Q3. Hero: 'Take back control of your money in 60 seconds a day.' Three teaser features. Email capture: 'Join the waitlist'. Social proof: 'From the team behind [prior product] — exited 2023.' Countdown to Sep 1. Style: warm, accessible, no fintech-cliche.
Why this works · Coming-soon prompts should include founder credibility — 'from the team behind X' is the strongest non-revenue social proof.
Investor-update mini-site
Investor update mini-site (password-gated) for our last 90 days of progress. Sections: revenue (placeholder for chart), team (3 hires), customer wins (Linear, Vercel — TBD permission), product (3 shipped features), asks. CTA: book a 30-min call. Style: editorial, restrained, business-document.
Why this works · Founders increasingly ship investor updates as gated mini-sites instead of decks. The prompt asks for password gating which routes through your auth.
Use cases
Recommended starting points
Landing page
Generate a conversion-tuned landing page from a single prompt — hero, social proof, features, FAQ, and CTA. Custom domain and SSL included.
SaaS website
Home, features, pricing, integrations, FAQ, and contact — all generated, on-brand, and SEO-ready. The marketing site your engineering team keeps de-prioritizing.
Coming-soon page
Validate your idea, build a waitlist, and run paid ads against a coming-soon page generated in minutes — with email capture wired in.
FAQ
Frequently asked questions
What's the fastest path from idea to a published landing page?
Describe the product in one or two sentences in the composer, pick a template direction, and hit generate. Most founders publish a credible v1 in 10–20 minutes, including custom domain. The slowest step is usually DNS propagation on the custom domain — typically a few minutes, occasionally an hour.
Can I update the site after fundraising changes the pitch?
Yes — chat-edit the live site. Tell the AI what's changed (new positioning, new pricing, new feature) and the site updates without you touching code. Most founders chat-edit weekly during the first six months.
What about exporting the code when I hire a designer?
Source-code export is supported on Pro and above. The export is clean Next.js — your designer can drop their brand tokens in, customize freely, and host on Vercel / Netlify / your own infra. Most founders export at series-A when they have a designer; pre-series-A, they keep iterating in Website Killer.
Can I run paid ads to the site?
Yes — pages ship with sub-1.5s LCP and mobile-perfect layout, which keeps ad-platform quality scores high. Most founders run Meta/Google ads against dedicated landing pages built in 10 minutes.
Does the site rank for our category keywords?
Out of the box you get clean technical SEO: server-rendered pages, schema on every surface, sub-1.5s LCP, sitemap, robots.txt. Ranking for category keywords requires backlinks and time — but the technical floor is in place from day one.
How is this different from using a visual canvas tool at our stage?
Visual canvas tools give you a canvas — you spend 2 weeks building. Website Killer generates the site from a prompt in 10 minutes. A canvas wins when you have a designer ready to build; Website Killer wins when you have a product launching Friday and no designer.
Ship a site this afternoon — founders edition.
Free forever plan. Custom domains, hosting, and AI generation included.