DropForm with Squarespace
Add a DropForm-powered contact form to Squarespace using a Code Block. Includes plain HTML, optional fetch mode, and file uploads.
January 17, 2026 by DropForm Team
This guide shows how to integrate DropForm with Squarespace using the Submission API: POST https://api.dropform.app/s/{uid}.
Squarespace’s built-in forms typically submit to Squarespace’s own form handling. To send submissions to DropForm, embed a custom HTML form in a Code Block (or an Embed block, depending on your template).
What you need
- Your DropForm form UID (endpoint looks like
https://api.dropform.app/s/{uid}) - A Squarespace site where you can add a Code Block / Embed
Option A: Code Block HTML (recommended)
Add a Code Block and paste this form HTML. This is the simplest and most reliable approach.
Option B: Fetch mode (optional)
Use fetch mode if you want inline success/error without navigation. Paste into a Code Block / Embed.
File uploads
Use enctype="multipart/form-data" to upload files to DropForm.
Common gotchas
- Use a Code Block / Embed: don’t paste form HTML into normal text blocks.
- Test after publishing: some templates behave differently in preview vs published mode.
- Don’t set Content-Type when using FormData.