Vercel and Netlify are powerful platforms for deploying modern web applications. But when you just need to deploy a simple HTML landing page—whether it's AI-generated, a marketing campaign, or a quick prototype—these platforms can feel like overkill. Git repositories, build configurations, CLI tools, deployment pipelines... it's a lot of setup for what should be a simple task.
According to BuiltWith's 2024 hosting trends, while Vercel and Netlify dominate the JAMstack space, over 60% of simple landing pages still use traditional hosting because developers find modern platforms too complex for basic HTML deployment.
This guide shows you a simpler approach: deploy HTML pages via API or a simple UI in seconds. No Git, no build steps, no configuration files. Just upload your HTML and get an instant URL. You can even link your custom domain with a simple CNAME record. Perfect for AI-generated landing pages, quick campaigns, A/B testing, and rapid prototyping.
Don't get me wrong—Vercel and Netlify are excellent platforms. They're perfect for complex applications with frameworks like Next.js, React, or Vue. But for a simple HTML landing page, they introduce unnecessary complexity:
For a developer who just wants to deploy HTML generated by ChatGPT or create a quick campaign page, this feels like using a sledgehammer to crack a nut.
CustomJS offers two ways to deploy HTML pages—both incredibly simple. Choose the method that fits your workflow:
Perfect for developers and automation workflows. Here's the entire deployment process:
Prefer a visual interface? Use the CustomJS dashboard to deploy pages with just a few clicks:
Paste your HTML code and preview it before deployment
Deploy your HTML page with one click
Bonus: Custom Domain Setup
In the UI, you can easily link your own domain via CNAME. Just add a CNAME record pointing to CustomJS, and your pages will be served from your branded domain (e.g., pages.yourdomain.com). No complex DNS configuration or SSL certificate management—it's all handled automatically.
Link your custom domain with a simple CNAME record
curl -X POST 'https://api.app.customjs.io/pages/page/upsert-html' \
-H 'x-api-key: YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-d '{
"name": "my-landing-page",
"htmlContent": "<!DOCTYPE html><html><head><title>My Page</title></head><body><h1>Hello World</h1></body></html>",
"slug": "my-custom-page"
}'Response:
{
"pageId": "abc123",
"htmlFileUrl": "https://pages.customjs.io/my-custom-page",
"name": "my-landing-page",
"message": "Page created successfully",
"created": true
} Your page is now live at the returned URL. Want to update it? Just make the same API call with the same name—the API automatically updates the existing page (upsert logic).
ChatGPT, Claude, and Gemini can generate complete HTML landing pages. With the CustomJS API, you can deploy them instantly:
// ChatGPT generates HTML, you deploy it
const aiGeneratedHTML = \`
<!DOCTYPE html>
<html>
<head>
<title>Product Launch</title>
<style>
body { font-family: Arial; max-width: 800px; margin: 0 auto; padding: 20px; }
.hero { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
color: white; padding: 60px 20px; text-align: center; }
.cta { background: #ff6b6b; color: white; padding: 15px 30px;
border: none; font-size: 18px; cursor: pointer; }
</style>
</head>
<body>
<div class="hero">
<h1>Revolutionary New Product</h1>
<p>Transform your workflow in minutes</p>
<button class="cta">Get Early Access</button>
</div>
</body>
</html>
\`;
const response = await fetch('https://api.app.customjs.io/pages/page/upsert-html', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
name: 'product-launch-2025',
htmlContent: aiGeneratedHTML,
slug: 'product-launch'
})
});
const result = await response.json();
console.log('Live at:', result.htmlFileUrl);Launch campaign pages in minutes without waiting for developers or deployment pipelines:
Deploy multiple page variants instantly for testing:
import requests
variants = {
'variant-a': '<html><body><h1>Buy Now - 50% Off!</h1></body></html>',
'variant-b': '<html><body><h1>Limited Time: Half Price!</h1></body></html>',
'variant-c': '<html><body><h1>Save Big Today!</h1></body></html>'
}
for slug, html in variants.items():
response = requests.post(
'https://api.app.customjs.io/pages/page/upsert-html',
headers={'x-api-key': 'YOUR_API_KEY'},
json={
'name': f'ab-test-{slug}',
'htmlContent': html,
'slug': slug
}
)
print(f'{slug}: {response.json()["htmlFileUrl"]}')Perfect for conferences, webinars, product launches, and time-sensitive events:
Show concepts to clients without complex setup:
Combine with CustomJS Form Builder for complete lead capture solutions:
<!DOCTYPE html>
<html>
<head>
<title>Contact Us</title>
<style>
body { font-family: Arial; max-width: 600px; margin: 50px auto; }
input, textarea { width: 100%; padding: 10px; margin: 10px 0; }
button { background: #4f46e5; color: white; padding: 12px 24px; border: none; }
</style>
</head>
<body>
<h1>Get in Touch</h1>
<form action="https://forms.customjs.io/YOUR_FORM_ID" method="POST">
<input type="text" name="name" placeholder="Your Name" required>
<input type="email" name="email" placeholder="Your Email" required>
<textarea name="message" placeholder="Your Message" rows="5"></textarea>
<button type="submit">Send Message</button>
</form>
</body>
</html> The API uses intelligent upsert logic based on the name parameter:
This means you can update your landing pages without worrying about creating duplicates or managing page IDs.
The optional slug parameter lets you create memorable URLs:
{
"name": "summer-sale-2025",
"slug": "summer-sale",
"htmlContent": "..."
}
// Results in: https://pages.customjs.io/summer-saleSlugs must be lowercase letters, numbers, and hyphens only (3-100 characters). If omitted, a unique slug is auto-generated.
Unlike traditional platforms with build steps:
Create an automated workflow that generates and deploys landing pages:
Learn more in our n8n integration guide.
Build landing pages from Airtable data automatically:
Check out our Make.com integration documentation.
Use ChatGPT's function calling to deploy pages:
// Define function for ChatGPT
const functions = [{
name: "deploy_landing_page",
description: "Deploy an HTML landing page",
parameters: {
type: "object",
properties: {
html: { type: "string", description: "Complete HTML content" },
slug: { type: "string", description: "URL slug for the page" }
}
}
}];
// ChatGPT generates HTML and calls this function
async function deploy_landing_page(html, slug) {
const response = await fetch('https://api.app.customjs.io/pages/page/upsert-html', {
method: 'POST',
headers: {
'x-api-key': process.env.CUSTOMJS_API_KEY,
'Content-Type': 'application/json'
},
body: JSON.stringify({
name: `ai-generated-${Date.now()}`,
htmlContent: html,
slug: slug
})
});
return await response.json();
}import requests
import gspread
from oauth2client.service_account import ServiceAccountCredentials
# Connect to Google Sheets
scope = ['https://spreadsheets.google.com/feeds']
creds = ServiceAccountCredentials.from_json_keyfile_name('credentials.json', scope)
client = gspread.authorize(creds)
sheet = client.open('Campaign Pages').sheet1
# Get campaign data
campaigns = sheet.get_all_records()
for campaign in campaigns:
html = f'''
<!DOCTYPE html>
<html>
<head>
<title>{campaign['title']}</title>
<style>
body {{ font-family: Arial; text-align: center; padding: 50px; }}
h1 {{ color: {campaign['color']}; }}
</style>
</head>
<body>
<h1>{campaign['headline']}</h1>
<p>{campaign['description']}</p>
<a href="{campaign['cta_link']}">{campaign['cta_text']}</a>
</body>
</html>
'''
response = requests.post(
'https://api.app.customjs.io/pages/page/upsert-html',
headers={'x-api-key': 'YOUR_API_KEY'},
json={
'name': campaign['slug'],
'htmlContent': html,
'slug': campaign['slug']
}
)
print(f"Deployed: {response.json()['htmlFileUrl']}")// Fetch upcoming events from CRM
const events = await fetchEventsFromCRM();
for (const event of events) {
const html = `
<!DOCTYPE html>
<html>
<head>
<title>${event.name} - Register Now</title>
<meta name="description" content="${event.description}">
<style>
body { font-family: 'Helvetica Neue', Arial; max-width: 800px; margin: 0 auto; }
.hero { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
color: white; padding: 80px 20px; text-align: center; }
.details { padding: 40px 20px; }
.register-btn { background: #ff6b6b; color: white; padding: 15px 40px;
text-decoration: none; display: inline-block; }
</style>
</head>
<body>
<div class="hero">
<h1>${event.name}</h1>
<p>${event.date} | ${event.location}</p>
</div>
<div class="details">
<h2>About This Event</h2>
<p>${event.description}</p>
<h3>Speakers</h3>
<ul>${event.speakers.map(s => `<li>${s.name} - ${s.title}</li>`).join('')}</ul>
<a href="${event.registrationUrl}" class="register-btn">Register Now</a>
</div>
</body>
</html>
`;
await deployPage({
name: `event-${event.id}`,
htmlContent: html,
slug: event.slug
});
}const translations = {
en: { title: 'Welcome', cta: 'Get Started' },
de: { title: 'Willkommen', cta: 'Jetzt Starten' },
es: { title: 'Bienvenido', cta: 'Empezar' },
fr: { title: 'Bienvenue', cta: 'Commencer' }
};
for (const [lang, text] of Object.entries(translations)) {
const html = `
<!DOCTYPE html>
<html lang="${lang}">
<head><title>${text.title}</title></head>
<body>
<h1>${text.title}</h1>
<button>${text.cta}</button>
</body>
</html>
`;
await fetch('https://api.app.customjs.io/pages/page/upsert-html', {
method: 'POST',
headers: {
'x-api-key': 'YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
name: `landing-${lang}`,
htmlContent: html,
slug: `welcome-${lang}`
})
});
}curl -X GET 'https://api.app.customjs.io/pages/api/page' \
-H 'x-api-key: YOUR_API_KEY'curl -X GET 'https://api.app.customjs.io/pages/api/page/id/PAGE_ID' \
-H 'x-api-key: YOUR_API_KEY' Simply use the same name in your upsert call:
curl -X POST 'https://api.app.customjs.io/pages/page/upsert-html' \
-H 'x-api-key: YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-d '{
"name": "my-landing-page",
"htmlContent": "<html><body><h1>Updated Content</h1></body></html>"
}'curl -X DELETE 'https://api.app.customjs.io/pages/api/page/id/PAGE_ID' \
-H 'x-api-key: YOUR_API_KEY'| Feature | CustomJS Pages API | Vercel | Netlify |
|---|---|---|---|
| Setup Complexity | API call or UI paste | Git repo + config files | Git repo + config files |
| Deployment Speed | Instant (<1s) | Build time (10s-5min) | Build time (10s-5min) |
| Best For | Simple HTML pages, campaigns, prototypes | Full applications, Next.js, React | JAMstack sites, static generators |
| Git Required | No | Yes | Yes |
| CLI Tools | Optional | Required for best experience | Required for best experience |
| API-First | Yes - designed for automation | Limited API support | Limited API support |
| Free Tier | 600 API calls/month | 100GB bandwidth | 100GB bandwidth |
| Pricing Model | Pay per API call | $20/month for Pro features | $19/month for Pro features |
Bottom line: If you're building a complex application with a framework, use Vercel or Netlify. If you just need to deploy simple HTML pages quickly, CustomJS is the simpler, faster choice.
Sign up at app.customjs.io and copy your API key from the dashboard. The free tier includes 600 API calls per month.
Create a simple HTML file or use AI to generate one:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>My First Landing Page</title>
<style>
body {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
margin: 0;
padding: 0;
background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
}
.container {
background: white;
padding: 60px 40px;
border-radius: 20px;
box-shadow: 0 20px 60px rgba(0,0,0,0.3);
max-width: 600px;
text-align: center;
}
h1 {
color: #333;
margin-bottom: 20px;
font-size: 2.5em;
}
p {
color: #666;
font-size: 1.2em;
line-height: 1.6;
margin-bottom: 30px;
}
.cta-button {
background: #ff6b6b;
color: white;
padding: 15px 40px;
border: none;
border-radius: 50px;
font-size: 1.1em;
cursor: pointer;
transition: transform 0.2s;
}
.cta-button:hover {
transform: scale(1.05);
}
</style>
</head>
<body>
<div class="container">
<h1>Welcome to My Landing Page</h1>
<p>This page was deployed in seconds using the CustomJS Pages API. No Git, no build steps, no complexity.</p>
<button class="cta-button">Get Started</button>
</div>
</body>
</html>Save your HTML to a file and deploy it:
# Read HTML from file and deploy
HTML_CONTENT=$(cat landing-page.html)
curl -X POST 'https://api.app.customjs.io/pages/page/upsert-html' \
-H 'x-api-key: YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-d "{
\"name\": \"my-first-page\",
\"htmlContent\": $(echo "$HTML_CONTENT" | jq -Rs .),
\"slug\": \"my-first-page\"
}"The API returns your page URL. Open it in a browser—your page is live!
{
"pageId": "abc123xyz",
"htmlFileUrl": "https://pages.customjs.io/my-first-page",
"name": "my-first-page",
"message": "Page created successfully",
"created": true
}That's it! Your landing page is now live and accessible worldwide. Total time: under 2 minutes.
Create complete lead capture solutions by combining HTML Pages with the Form Builder:
Generate downloadable resources on your landing pages:
Automatically generate social media preview images:
Choose clear, descriptive names for easy management:
// Good
name: "summer-sale-2025"
name: "webinar-landing-march"
name: "product-launch-beta"
// Avoid
name: "page1"
name: "test"
name: "landing" For best performance, inline your CSS in the <head>:
Use optimized images for faster loading:
Include proper meta tags for SEO and social sharing:
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Your Page Title</title>
<meta name="description" content="Compelling description for search engines">
<!-- Open Graph for social sharing -->
<meta property="og:title" content="Your Page Title">
<meta property="og:description" content="Description for social media">
<meta property="og:image" content="https://yourcdn.com/preview.jpg">
<!-- Twitter Card -->
<meta name="twitter:card" content="summary_large_image">
</head>Ensure your pages work on all devices:
For important campaigns, consider versioning:
// Keep versions for rollback
name: "campaign-v1"
name: "campaign-v2"
name: "campaign-v3"
// Or use dates
name: "campaign-2025-03-15"CustomJS Pages API uses transparent, developer-friendly pricing:
Example usage: Deploying 50 campaign pages and updating them 5 times each = 300 API calls = Free
Compare this to Vercel ($20/month for Pro) or Netlify ($19/month for Pro) when you only need simple HTML hosting.
Yes! You can easily link your custom domain via CNAME in the CustomJS UI. Just add a CNAME record pointing to CustomJS, and your pages will be served from your branded domain (e.g., pages.yourdomain.com). SSL certificates are automatically provisioned and managed for you.
Yes! You can include JavaScript in your HTML. The pages are served as-is, so any client-side JavaScript will work normally.
Simply make another API call with the same name parameter. The API automatically updates the existing page instead of creating a duplicate.
The API is designed for single HTML pages. For multi-page sites with routing, consider using Vercel or Netlify. However, you can deploy multiple separate pages and link between them.
After 600 API calls per month, additional calls are billed at standard rates. You'll receive notifications before hitting limits, and can upgrade your plan anytime.
Yes! Pages are served as standard HTML with proper headers. Search engines can crawl and index them normally. Make sure to include proper meta tags for best SEO results.
Absolutely! You can embed any HTML, including forms, YouTube videos, Google Maps, chat widgets, analytics scripts, etc. The HTML is served exactly as you provide it.
Pages remain live indefinitely as long as your account is active. There's no automatic expiration. You can delete pages anytime via the API.
Deploying HTML landing pages doesn't have to involve Git repositories, build pipelines, or complex configuration. With CustomJS Pages API, you get instant deployment with a single API call—perfect for AI-generated pages, marketing campaigns, rapid prototyping, and automation workflows.
While Vercel and Netlify excel at deploying complex applications, CustomJS offers a simpler, faster alternative for basic HTML pages. No learning curve, no infrastructure, no overhead—just upload your HTML and get a live URL in seconds.
Whether you're deploying AI-generated landing pages from ChatGPT, automating campaign pages from spreadsheets, or building rapid prototypes for clients, the Pages API provides the simplicity and speed you need.
Get started free with 600 API calls per month
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