https://wppaste.com/reference/classes/wp_customize_manager/set_preview_url
WP_Customize_Manager::set_preview_url() | Class Method | WordPress Code Reference - WPPaste
Sets the initial URL to be previewed.
set preview
https://readforlearn.com/customizer-add-query-to-preview-url/
Customizer add query to preview URL - Read For Learn
Sep 18, 2022 - How about checking if the preview URL already contains your custom_query before adding it?
preview urlcustomizeraddqueryread
https://www.gmail-url-link-preview.com/pricing
Gmail URL Link Preview - Pricing
Share visually appealing previews, or the full contents of a URL link directly in your email.
gmail url link previewpricing
https://support.shortpoint.com/support/solutions/articles/1000294793-preview-any-shortpoint-spfx-version-on-the-page-using-a-url-parameter
Preview Any ShortPoint SPFx Version on a Page Using a URL Parameter : ShortPoint Support