Contact forms for JavaScript

Add a contact form to any page with plain JavaScript and no backend. It is a real HTML form plus a submit listener that posts with fetch, so the visitor stays on the page. No framework and no build step. Preview it live, copy the code in your styling of choice, and submissions land in your inbox - spam filtered.

How to create a JavaScript form

1
Create a form in your Formpaste dashboard and copy its access key.
2
Copy the form and script above into your page and pick your styling.
3
Replace YOUR_ACCESS_KEY_HERE with your access key, then publish.

Prompt for your AI coding agent

Add a Formpaste contact form to my page with vanilla JavaScript. Use a real HTML form with an action of https://api.formpaste.com/submit and a hidden access_key input, plus a submit listener that calls preventDefault and POSTs new URLSearchParams(new FormData(form)) with fetch, then resets the form. No framework and no backend.

Or connect the Formpaste MCP server to Claude Code, Codex, Cursor, Claude Desktop, VS Code, or any mcp-remote client. See the setup guide.

A form and a fetch

The snippet above is a real HTML form plus a short script. The form has an action pointing at Formpaste, and the script adds a submit listener that calls preventDefault(), posts the fields with fetch, and resets the form. There is no framework, no build step, and no backend - you paste it into any page and it works.

Handling the response

The endpoint returns JSON (success, message, id). Await the fetch and show your own success or error message in the page, which is the whole reason to add the script. If you would rather not write any JavaScript, set a redirect URL in your dashboard settings and let the plain form post send the visitor to a thank-you page.

Progressive enhancement, not a dependency

Because the markup is a real form with an action, it still submits when the script fails to load or JavaScript is turned off. That makes the script a genuine upgrade rather than a requirement, and it is why the form degrades gracefully on any page.

How it works

Three simple steps for form submissions to land in your email inbox.
Create your form, set your form's action URL to Formpaste's endpoint, and add your access key.

1

Create your form

Sign up, verify your email, and create an access key in your dashboard.

2

Copy the code

Paste the snippet above into your project. Pick CSS or Tailwind to match your site.

<form id="form" action="https://api.formpaste.com/submit" method="POST" class="mx-auto flex w-full max-w-md flex-col gap-4 rounded-xl border border-gray-200 bg-white p-6 shadow-sm dark:border-gray-800 dark:bg-gray-950">
  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY_HERE">
  <label class="flex flex-col gap-1.5 text-sm font-medium text-gray-900 dark:text-gray-100">Name
    <input type="text" name="name" placeholder="Your name" required class="rounded-md border border-gray-300 bg-white px-3 py-2 text-sm text-gray-900 shadow-sm outline-none focus-visible:ring-2 focus-visible:ring-gray-900 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 dark:focus-visible:ring-gray-100" />
  </label>
  <label class="flex flex-col gap-1.5 text-sm font-medium text-gray-900 dark:text-gray-100">Email
    <input type="email" name="email" placeholder="you@example.com" required class="rounded-md border border-gray-300 bg-white px-3 py-2 text-sm text-gray-900 shadow-sm outline-none focus-visible:ring-2 focus-visible:ring-gray-900 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 dark:focus-visible:ring-gray-100" />
  </label>
  <label class="flex flex-col gap-1.5 text-sm font-medium text-gray-900 dark:text-gray-100">Message
    <textarea name="message" required class="min-h-28 rounded-md border border-gray-300 bg-white px-3 py-2 text-sm text-gray-900 shadow-sm outline-none focus-visible:ring-2 focus-visible:ring-gray-900 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 dark:focus-visible:ring-gray-100"></textarea>
  </label>
  <button type="submit" class="w-full rounded-md bg-gray-900 px-4 py-2 text-sm font-medium text-white shadow-sm transition-colors hover:bg-gray-800 disabled:opacity-60 dark:bg-white dark:text-gray-900 dark:hover:bg-gray-200">Send</button>
</form>

<script>
  const form = document.getElementById("form");
  form.addEventListener("submit", async (e) => {
    e.preventDefault();
    await fetch("https://api.formpaste.com/submit", { method: "POST", body: new URLSearchParams(new FormData(form)) });
    form.reset();
  });
</script>

3

Add your access key

Replace the placeholder with your access key to start receiving submissions.

<input type="hidden" name="access_key" value="YOUR_ACCESS_KEY_HERE">

Contact forms for JavaScript FAQ

Paste a form. Get submissions.

Instantly without setting up any backend, servers or databases. 250 submissions/mo free - no credit card.

Start free Read the docs

What you get with Formpaste

No server, no DNS

Point your form at Formpaste - no backend, no DNS, no email server to run.

Spam filtered automatically

Heuristics + a quarantine folder you control. Real messages always get through.

Quarantine you control

Suspicious submissions land in a folder you review - nothing silently dropped.

Built for AI agents

An MCP server your coding agent calls to create a form and wire it up.

Copy-paste components

Accessible, copy-paste form code for HTML, React, TypeScript, JavaScript, and Astro.

Simple dashboard

Manage forms, inbox, quarantine, and delivery from one place.

More JavaScript forms

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