File uploads

Formward accepts file attachments on your forms. Add a <input type="file"> with a name and submit the form as multipart/form-data. Each uploaded file is stored securely and listed on the submission in your dashboard, where you can download it. File uploads are available on the Professional plan and above.

Add a file field

Set the form's enctype to multipart/form-data so the browser sends the file bytes, and give each file input a name. Use multiple to allow several files in one field.

<form
  action="https://forms.formward.eu/f/<formId>"
  method="POST"
  enctype="multipart/form-data"
>
  <label>
    Your CV
    <input type="file" name="cv" />
  </label>

  <label>
    Attachments
    <input type="file" name="attachments" multiple />
  </label>

  <button type="submit">Send</button>
</form>

Limits

Available on the Professional plan and above.
Up to 5 files per submission.
10 MiB maximum per file.
25 MiB maximum total across all files in one submission.
Files are scoped to the submission and only the form owner can download them, through an authenticated dashboard link.
Downloads are always served as attachments (never rendered inline), so an uploaded HTML or SVG file can never run as a page.

Allowed file types

Only the following MIME types are accepted. Anything else (including executables, scripts, archives, and HTML) is rejected with a 415:

Images: image/jpeg, image/png, image/gif, image/webp
Documents: application/pdf, text/plain, text/csv, application/csv
Microsoft Office: .doc/.docx, .xls/.xlsx, .ppt/.pptx
OpenDocument: .odt, .ods, .odp

Upload errors

When an upload violates a limit, the endpoint rejects the whole submission with one of these status codes (JSON body in AJAX mode, otherwise a minimal HTML error page). See Responses & redirects for the full table.

Code	When	Body (AJAX)
400	More than 5 files, or uploads not available on this server	{ ok: false, error: "too many files" }
413	A file exceeds 10 MiB, or the request exceeds 25 MiB total	{ ok: false, error: "file too large" }
415	A file's type is not in the allowed list	{ ok: false, error: "file type not allowed: <mime>" }
403	Uploads disabled on the form, or the plan does not include uploads	{ ok: false, error: "file uploads are disabled for this form" }

On success, the AJAX response includes a files count of how many attachments were stored, e.g. { ok: true, id: "...", files: 2 }.

Viewing uploads

Open any submission under the form's Submissions tab. Files appear in an Attachments section with their size and type, each with a download link. Non-file fields behave exactly as described in Special fields.