Understanding form design and customization options

Last updated: July 15, 2025

Overview

You can customize your forms’ device display options, add multiple pages to your form, and style every part of your form to seamlessly blend in with the rest of your website.

Read on to learn about options for designing and customizing your Sendlane Forms! 

Check out our guide to using custom CSS with forms here

New form options

When you create a new form, you’re asked to set your form’s name, type, device type, and layout:

  • Form name - The name of your form will only be seen inside Sendlane and will never be visible on your website. Enter a descriptive name for your form.

  • Type

    • Pop Up - form that sits on top of your website content (can be full screen)

    • Inline - form that is embedded into your website’s content

  • Device Type

    • Mobile - display your form only on mobile devices

    • Desktop - display your form only on desktop

    • Desktop & Mobile - display your form on both mobile and desktop devices.

  • Layout

    • Regular - display your form in the middle of the screen

    • Partial - display your form in the bottom portion of the screen

Add and rearrange form pages

Add or rearrange your form’s pages on the design screen of the form builder.

To add a new page to your form:

  1. Click the plus button at the top of the form preview

  2. Select a page type

    1. Blank page - a page with no default fields except a “next” button

    2. Email - a page with a required email field

    3. SMS - a page with a required phone number field

  3. Enter a descriptive name for your page

  4. Click Add Page

To rearrange your form’s pages:

  1. Click and hold the page you want to move

  2. Drag it into the position you want

  3. Let go of the page

Set global form styles

Use the Global Styles tab of the Form Design screen to set your form's design, global styles for form fields, and to set your form's close button styling.

Global Form Design Styles

  • Layout - Select Split to add a left or right justified hero image to the default Full form, then select an image from a file or URL (this option should only be used for desktop forms; the form's text will render incorrectly on mobile if split layout is enabled)

    • Split layout options:

      • Position - Select to display the hero image on the right or left side of your form

      • Image Size - Select a size for your hero image

        • Small - Image fills 30% of the form

        • Medium - Image fills 50% of the form

        • Large - Image fills 70% of the form

  • Background - Select whether to use a color or an image for your form's background

    • Color - Select a preset color or enter a hex value for your form’s background color

    • Image

      • Upload type - Select From file to upload an image from your desktop or From URL to use an image's URL

      • Background size - Select one of the following CSS based background size options

        • Cover - Retains the image's aspect ratio while scaling the image to the smallest size required to fill the form background

        • Contain - Retains the image's aspect ratio while scaling the image as large as possible without cropping or stretching

        • Auto - Retains the image's original dimensions

        • Px - Use the slider to set the image's static width

      • Background position - Select a position for the image

      • Background Repeat - Select Repeat Y to repeat the image on the Y axis (vertically), select Repeat X to repeat the image on the X axis (horizontally)

      • Fullscreen (Only for pop-up type forms with a regular layout) - Check the box to make your form take up the entire screen on desktop and mobile (pop-up type forms with a regular layout only)

      • Overlay Style - If Fullscreen is unchecked, you can select an optional overlay style that will fill the rest of the screen with a light, medium, or dark shade of gray. Custom colors are not available for overlays.

      • Corner Radius - If Fullscreen is unchecked, you can select a curved corner radius

  • Position - Select the position on your website the form should display in (available only for regular layout forms)

  • Corner radius - Select a corner radius for the form

  • Size - Select a size for the form (available only for desktop regular layout forms)

Global Form Fields Styles

  • Label position

    • Inside - show the field label inside the field

    • Outside - show the field above the field

  • Text alignment - Select an alignment for form labels

  • Font color - Select a preset color or enter a hex value for your form labels’ font

  • Font family - Select a font family for form labels

  • Font size - Select a font size for form labels

  • Font weight - Select a font weight for form labels

  • Corner radius - Select a corner radius for form field boxes

  • Background color - Select a background color for form field boxes

  • Border - Check the checkbox to add a border to form fields, then select a color and thickness for the border

Close Button

  • Size - Select a size for the close button

  • Stroke Width - select a width for the close button

  • Close icon color - Select a preset color or enter a hex value for your form’s close button

  • Icon background - Check the checkbox to select a background color for the form’s close button

Set styles for individual content blocks

Use the Content tab of the Form Design page to add and style to elements on your form:

Image

  • Upload Type - Select From file to upload an image file or From URL to paste an image URL into the form builder. Replace the placeholder image with an image of your own.

  • Size - Adjust the image’s size

  • Alignment - Select an alignment for the image

  • Corner Radius - Select a corner radius for the image

  • Margin Top - Adjust the image’s top margin

  • Margin Bottom - Adjust the image’s bottom margin

Text

  • Text field - Enter text to display on your form

  • Font color - Select a preset color or enter a hex value for your text element’s font

  • Font family - Select a font family for your text element

  • Font size - Select a font size for your text element

  • Font weight - Select a font weight for your text element

  • Letter spacing - Adjust the text element’s spacing between letters

  • Line Height - Adjust the text element’s line height

  • Font Style - Select U to underline text or I to italicize text

  • Text Alignment - Select an alignment for your text element

  • Margin Top - Adjust the text element’s top margin

  • Margin Bottom - Adjust the text element’s bottom margin

How do I add a hyperlink to a form?

You can paste hyperlinks created elsewhere, such as in a Google Doc or Notion page, into a text element. See the guide to using custom CSS with Sendlane Forms to learn how to change the color of links in your form.

To add a hyperlink to your form:

  1. Open a Google Doc, Notion, or other software that allows you to create hyperlinks

  2. Create your hyperlink

  3. Copy your hyperlink

  4. Paste the hyperlink into the text field

Form Fields

  • Order - Click and hold the drag and drop icon to rearrange form fields

  • Label - Change a field’s label text in the Label field

  • Required checkbox - Check the Required checkbox to mark the field as required for form submission

  • Legal Text - Click to add and edit legal text appended to email and SMS fields

  • First Name - Collect a Contact’s first name

  • Last Name - Collect a Contact’s last name

  • Custom - Select an existing custom field or create a new one to collect via your form

The Subscribe, Affiliate, Privacy Statement, and Email Consent fields should not be used. They will be removed from the form builder.

Option Selector

  • Type

    • Checkbox - Allow Contacts to select multiple options

    • Radio Button - Display all options and allow Contacts to select one only

    • Dropdown - Allow Contacts to select one option from a dropdown

  • Custom Field - Select an existing custom field or create a new one

  • Options

    • Use the drag and drop icon to rearrange options

    • Enter text to display on your form for the option in the Option field

    • Enter the text you want to collect in Contacts’ custom field data in the Property field

    • Click + Option to add another option

    • Font color - Select a preset color or enter a hex value for your options’ font

    • Font family - Select a font family for your options

    • Font size - Select a font size for your options

    • Font weight - Select a font weight for your options

    • Letter spacing - Adjust the options’ spacing between letters

    • Line Height - Adjust the text options’ line height

    • Font Style - Select U to underline text or I to italicize options

    • Margin Top - Adjust the options’ top margin

    • Margin Bottom - Adjust the options’ bottom margin

Button

  • Action

    • Submit and go to next page - Submit data to Sendlane and go to the next page of the form

    • Submit and close form - Submit data to Sendlane and close form

    • Submit and go to URL - Submit data to Sendlane and go to a specified URL

    • Close Form - Dismiss the form (website visitors who dismiss the form will not see it again for three days)

    • Go to URL

  • Text - Enter text to display on the button

  • Font Color - Select a preset color or enter a hex value for your button’s font

  • Font Family - Select a font family for your button

  • Font Size - Select a font size for your button

  • Font Weight - Select a font weight for your button

  • Letter Spacing - Adjust the button’s spacing between letters

  • Line Height - Adjust the text button’s line height

  • Font Style - Select U to underline text or I to italicize button text

  • Margin Top - Adjust the button’s top margin

  • Margin Bottom - Adjust the button’s bottom margin

  • Corner Radius - Select a corner radius for form field boxes

  • Background Color - Select a background color for form field boxes

  • Border - Check the checkbox to add a border to form fields, then select a color and thickness for the border