links_to_iframes_filter

Provides a Drupal text filter that replaces configured links with iframe markup.

What it does

• Stores link to iframe replacements in a custom database table.
• Adds a text filter plugin: Replace links with iframes.
• When enabled on a text format, matching links in processed text are replaced with the configured iframe markup.

Requirements

• Drupal 10 or 11
• Core filter module (declared as a dependency)

Installation

1. Enable the module.
2. Rebuild caches.

Configuration

1. Go to: /admin/config/content/links-to-iframes
2. Add one or more replacements:
   • Link
   • Iframe
3. Save replacements.

Enable the filter on a text format

1. Go to: /admin/config/content/formats
2. Edit the text format you want.
3. Enable Replace links with iframes.
4. Save the text format.

Matching behavior

• Matches anchors by exact href value.
• Replacement runs only where that text format is applied.

Example input and output

Configured replacement:

• Link: https://example.com/embed#swap-for-iframe
• Iframe: <iframe src="https://example.com/embed" frameborder=""></iframe>

Input (text using a format with the filter enabled):

<p>
   <a href="https://example.com/embed#swap-for-iframe">Open embed</a>
</p>

Output after filtering:

<p>
   <iframe src="https://example.com/embed"></iframe>
</p>

Data storage

• Data is stored in table: links_to_iframes_filter
• Cache tag used by the filter: links_to_iframes_filter:mappings

Testing

phpunit tests area available in the /tests folder.