> For the complete documentation index, see [llms.txt](https://docs.feathery.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.feathery.io/platform/form-fields/link-fields-across-forms.md).

# Link Fields Across Forms

Each Feathery field is available across all forms and integrations. If you want to use a field across multiple forms, look for the same field ID. The ID of a field doesn't change across forms.

## Form Fields

Any field you add to a form can be linked to any other form field, whether it's on the current form or a different form.

If two fields are linked, they share the same data but can be styled separately. This means if one of your linked fields is filled out, the data will show up for your user on the other linked field too.

Linked form fields also share the same data properties, such as max length, allowed characters, etc.

<figure><img src="/files/ufzi5QwcbWvlbGqCPqQ0" alt=""><figcaption></figcaption></figure>

## Hidden Fields

Hidden fields are by default available across all of your forms. Just look for the relevant field when choosing your hidden field to use.

<figure><img src="/files/dO9kkQBZUTGdO80X8Jdl" alt=""><figcaption></figcaption></figure>


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