neojp

Adds HTML5 placeholder support to the Gravity Forms plugin copying the Field’s label as the placeholder and hidding it. Javascript fallback is used for old browsers that don’t support the HTML5 placeholder attribute.
You can find the source code at the GitHub repository, forks and pull requests are welcomed. 
http://github.com/neojp/gravity-forms-placeholders/
<h3>GitHub source code</h3>
You can find the source code at the GitHub repository, forks and pull requests are welcomed. 
http://github.com/neojp/gravity-forms-placeholders/

Gravity Forms – Placeholders add-on

Adds HTML5 placeholder support to Gravity Forms' fields with a Javascript fallback. Javascript & jQuery are required.

trexhostcom

Placeholder Manager lets you replace dynamic placeholders in WordPress content including posts, pages, titles, Gutenberg blocks, and widgets.
It is useful for multi-site branding, affiliate websites, and managing reusable content variables like brand names, URLs, and emails.
Key Features:
<ul>
<li>Replace placeholders in content, titles, widgets, and blocks</li>
<li>Create unlimited custom placeholders</li>
<li>Easily update branding across your entire site</li>
<li>Save time by avoiding manual edits</li>
</ul>
<h3>Example Usage 1</h3>
Placeholders defined:
 Placeholder 
 Value
 {BRAND_NAME} 
 TrexHost
 {WEBSITE_URL} 
 https://trexhost.com
 {CONTACT_EMAIL} 
 support@trexhost.com
Content in a post/page:
Welcome to {BRAND_NAME}!
Visit our website: <a href="{WEBSITE_URL}" rel="nofollow ugc">{WEBSITE_URL}</a>
For support, contact us at {CONTACT_EMAIL}.
Output on the site:
Welcome to TrexHost!
Visit our website: https://trexhost.com
For support, contact us at support@trexhost.com.
<h3>Example Usage 2</h3>
If you have multiple WordPress sites, you can duplicate content while keeping each site’s unique branding. Export and import posts/pages normally, then adjust placeholders per site.
When importing, ensure URL rewriting is configured correctly in your import tool.
Note:
When using placeholders in hyperlinks like {WEBSITE_URL}, WordPress may automatically add “http://”, causing broken links. To fix this, switch to the HTML editor and use:
<a href="{WEBSITE_URL}" rel="nofollow ugc"></a>

Placeholder Manager

Manage placeholders in WordPress content, titles, widgets, and blocks.

Gravity Forms – Placeholders add-on vs Placeholder Manager