The short version
Coming-soon pages are the cheapest validation tool ever invented. Spend $200 on a paid-ads test against a one-page site with an email field, watch the CPL, and you've answered 'is this a real market' before you write a line of code. The page itself is the experiment — every visitor who signs up is a data point, every visitor who doesn't is a different data point.
Website Killer generates the page in 5 minutes. Bold hero with the product pitch, three teaser features, a countdown timer if you want one, an email-capture form that posts to your inbox or a webhook (Mailchimp, ConvertKit, Customer.io), and a press-logo or 'as featured in' strip for credibility. Custom domain with SSL, OG card, mobile-perfect — the whole thing is paid-ads-ready out of the box.
The validation pattern: ship the page on a Wednesday, point $200 of Meta ads at it Friday, read the numbers Monday. If signup CPL is under $2, you have a product. If it's over $8, the offer needs work before the product does. The page itself stays live through pre-launch and converts to a real launch page when you ship.
The problem
You have an idea. You don't have a product yet. You need a credible waitlist page running paid ads by tomorrow.
Website Killer for coming-soon page
What you get out of the box
- Bold hero with your product pitch
- Email capture wired to your inbox + optional webhook (Mailchimp, ConvertKit, etc.)
- Countdown timer (optional — useful for launches with a date)
- Social proof / press logos strip
- Three teaser feature blocks (just enough to earn the email)
- Custom domain with SSL — yourbrand.com from day one
- OG card + Twitter Card optimized for ad-platform sharing
- Sub-1.5s LCP on 4G — paid-ads quality score stays high
What great looks like
Coming-soon pages that convert share five traits. Most coming-soon pages don't have any of them.
- Email field above the fold — every scroll before the email is a 20% conversion leak
- A specific promise — 'We're building the AI website builder for small businesses' beats 'Something big is coming'
- Social proof even pre-launch — 'Backed by [investor]' or 'From the team behind [product]' replaces missing testimonials
- One CTA only — 'Join the waitlist' on every section, same color, same wording
- A reason to come back — 'You'll be the first to get access in Q3' beats 'Stay tuned' by 3x
Worked examples
Prompts that work
Three real prompts you can adapt. The more concrete the prompt, the less editing you do after.
SaaS pre-launch (waitlist building)
Coming-soon 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: AI-categorized spending, weekly money summaries, debt payoff playbook. Email capture: 'Join 4,000+ people on the waitlist' (mark count as placeholder until real). Social proof: 'From the team behind [redacted previous product] — exited 2023.' Countdown to Sep 1. CTA: 'Get early access.' Style: warm, accessible, no fintech-cliche imagery.
Why this works · Pre-launch SaaS prompts should name the founder credibility signal explicitly. 'From the team behind X' is the strongest non-revenue social proof.
Consumer product launch
Coming-soon page for Lumi, a smart lamp that responds to your day (gradient warmth based on time, dims with your meditation app, brightens for focus). Hero: full-bleed product image + 'A lamp that knows what time it is.' Three teaser features: time-of-day color, integrations with Calm/Headspace, on-device privacy. Email capture for 'first batch' with a $50 discount perk. Press logos: TechCrunch, Wired, The Verge (mark as 'where we'll be featured' placeholder). Style: minimal, product-photography-led, lifestyle imagery.
Why this works · Consumer products convert on image quality. The prompt asks for a product-photography-led layout, which the AI translates to a hero-image-dominant template.
Indie / side-project waitlist
Coming-soon page for Quarterly, a side-project newsletter that summarizes the most important product launches every 3 months. Hero: 'The quarterly digest for people who build things.' Three reasons to join: hand-curated (no AI slop), 4 emails a year (no spam), free forever. Email capture only. Social proof: 'Made by [solo founder name] — building in public on Twitter @handle.' Style: editorial, type-driven, low-noise. No countdown — it's evergreen.
Why this works · Indie projects need restraint. The prompt removes the countdown, the press-logos strip, and the multi-CTA — everything except the email field.
Avoid these
Common mistakes
- Vague hero — 'Reimagining the future of [category]' converts 5x worse than 'We're building [specific thing] for [specific audience]'
- Email field below the fold — every scroll is a 20% leak; the field belongs at the top
- Too many fields — name + email + role + company drops conversion 60% vs email alone
- No follow-up sequence — 80% of waitlist signups forget you exist within 2 weeks; ship a confirmation email + a launch-week countdown sequence
- Mismatched ad creative — a 'futuristic AI' ad pointing at a 'cozy lifestyle product' coming-soon page tanks Meta quality score and 3x's your CPL
FAQ
Frequently asked questions
Where do email signups go?
Submissions land in your project's contact submissions inbox by default. Connect Mailchimp, ConvertKit, Customer.io, Brevo, Loops, or any webhook in form settings — most pre-launch teams route directly to their email tool so the welcome email fires the moment someone signs up.
Can I add a countdown timer to my launch date?
Yes — describe the launch date in your prompt or via chat-edit and the AI inserts a countdown block. Timers are server-rendered so they're SEO-safe (no client-only flicker) and they auto-hide on launch day.
Can I run paid ads to the coming-soon page?
Yes — the page is built specifically for paid-ads quality scores: sub-1.5s LCP, mobile-first, no CLS, proper OG card for ad-platform sharing. Most pre-launch teams test offers with $200–$500 of Meta or Google ads against a coming-soon page before writing a line of product code.
What's the launch-day workflow — do I have to rebuild the site?
No — chat-edit the coming-soon page into the real launch page. Add the buy / sign-up CTA, replace the countdown with the live feature list, add the real testimonials. The URL stays the same, the audience that signed up gets the upgrade email, and you keep all the SEO signal you built pre-launch.
Do I get a custom domain on the coming-soon page?
Yes — Pro ($14/mo) includes 5 domain slots. Most pre-launch teams use the real brand domain (yourbrand.com) from day one — partly for credibility, partly to build domain authority before launch. Free plan ships on the *.killerwebsite.ai subdomain.
Can I add a referral / 'invite friends to move up the waitlist' mechanic?
Not natively yet — for that pattern, pair Website Killer's coming-soon page with a tool like SparkLoop, Viral Loops, or KickoffLabs (the form posts to their endpoint). Native waitlist mechanics are on the roadmap for late 2026.
How do I prove the waitlist is real on the page (the chicken-and-egg problem)?
Two patterns work. (1) Don't claim numbers you don't have — 'Join the waitlist' beats 'Join 47 people on the waitlist'. (2) Lean on founder or team credibility instead: 'From the team behind X' or 'Backed by [investor]' replaces missing volume. The AI generates either pattern from your prompt.
Ship your coming-soon page today
Free forever plan. AI generation, hosting, and a custom domain — in one flow.