Social preview (Open Graph)

When someone shares your form link on Slack, Twitter, LinkedIn, iMessage, or any platform that fetches link previews, they see a card pulled from your form's metadata.

What appears in the card

By default the card uses:

Title — the form's title.
Description — a short auto-generated summary.
Image — your form's cover image, if one is set. Falls back to a NodumForms-branded card.

If Show NodumForms branding is on for your form, the title appends "| NodumForms" so people know which tool the form is built with.

Customising the preview

Use the cover image (the big banner at the top of the form) as your social preview. A landscape image at least 1200×630px renders best on most platforms.

Testing your preview

Paste the form URL into Facebook's Sharing Debugger or Twitter's Card Validator to see exactly what your card looks like before posting.

When to override branding

Hide the "| NodumForms" suffix by turning off Show NodumForms branding in the publish popover (Pro feature; free during beta). Most marketing teams want their form to look entirely first-party.

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FAQs

: Yes — set a custom domain for any form (e.g., forms.yourbrand.com) from the form settings. You'll need to add a CNAME record at your DNS provider pointing to nodumforms.com.
: A native embed snippet isn't built yet. As a workaround you can wrap the public form URL in your own iframe, but the form's page-level chrome (header / footer) will be visible. A dedicated embed mode is on the roadmap.
: Yes — append query parameters of the form `?prefill_BLOCKID=value` to the form URL. The matching block opens with the value already filled in. Useful for tracking source links and personalising entry points.