File uploads

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Adding a file input

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Plain HTML (no JS)

<form action="https://api.formpaste.com/submit" method="POST" enctype="multipart/form-data">
  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY">
  <input type="text" name="name" required>
  <input type="email" name="email" required>
  <textarea name="message"></textarea>
  <input type="file" name="attachment" multiple>
  <button type="submit">Send</button>
</form>

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React / Vue / Astro / any JS

const form = new FormData();
form.set("access_key", "YOUR_ACCESS_KEY");
form.set("name", name);
form.set("email", email);
for (const file of fileInput.files) form.append("attachment", file);

const res = await fetch("https://api.formpaste.com/submit", {
  method: "POST",
  body: form,
});

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Limits

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What happens to an uploaded file

1. The file uploads to storage (Cloudflare R2) and is held privately while it’s scanned. Nothing is released before scanning completes - this is fail-closed: if scanning can’t confirm a file is clean, it is not made available.
2. If the file passes, it becomes downloadable from your dashboard - open the submission and download the file. Downloads are owner-scoped: only the account that owns the form can fetch it, over a short-lived authenticated link. Files are never publicly reachable by URL.
3. If the file fails scanning (or is an unsafe/unrecognized type), it’s blocked and never delivered to you.

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Free vs. Pro

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Zero-config