by Matthias Pfefferle 5 (8 reviews)

Webmention

Name: Webmention
Rating: 5.0 (8 reviews)
Author: Matthias Pfefferle

Send and receive Webmentions in WordPress.

Webmention ranks #6,998 among WordPress.org plugins with 900+ active installations, is #252 of 2,958 in the Discussion & Community category, a 5/5 rating from 8 reviews, and was last updated Oct 21, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1

v5.11.0 Current Version v5.11.0

Updated 2 weeks ago Last Update on 21 Oct, 2026

Refreshed 1 week ago Last Refreshed on

#252 of 2,958 in Discussion & Community Top 10% by installs Downloads -29.9% this week Actively maintained

View on WordPress.org

Rank

#6,998

— No change

Active Installs

900+

-7.9%

KW Avg Position

4.2

— No change

Downloads

59.6K

+13 today

Support Resolved

— No change

Rating

100%

Review 5 out of 5

5 (8 reviews)

Next Milestone 1K

Total Progress 87%

900+ 1K+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #6,998

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

5.0

8 reviews

Overall 100%

8 (100%)

0 (0%)

Security History

Source: WPVulnerability

5 known vulnerabilities on record · 3 in the last 24 months · checked 3 months ago

Jun 30, 2026

Webmention [webmention] < 5.8.1

CVE-2026-10513 · Fixed in v5.8.1
Apr 1, 2026

Webmention [webmention] < 5.7.0

CVE-2026-0686 · Fixed in v5.7.0
Apr 1, 2026

Webmention [webmention] < 5.7.0

CVE-2026-0688 · Fixed in v5.7.0
Mar 10, 2023

Webmention [webmention] < 4.0.9

Fixed in v4.0.9
Mar 8, 2023

Webmention [webmention] < 4.0.9

Fixed in v4.0.9

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Plugin Details

Version: 5.11.0
Last Updated: Oct 21, 2026
Requires WP: 6.2+
Tested Up To: 7.1
PHP Version: 7.4 or higher
Author: Matthias Pfefferle

Support & Rating

Rating: ★ ★ ★ ★ ★ 5
Reviews: 8
Support Threads: 0
Resolved: 0%

Keywords

indieweb linkback pingback trackback webmention

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners who want their site to participate in cross-site conversations via the Webmention protocol. It solves the problem of notifying and displaying responses (like comments, likes, or RSVPs) when one site links to another, enabling a distributed social web.

Send Webmentions
Receive Webmentions
Built-in presentation display
Supports RSVP responses
Supports like responses
Supports bookmark responses

Frequently Asked Questions

Common questions about Webmention

Webmention is a way to notify a website when you link to it on your site. The receiving website can then display your post as a reply or reaction. That Sounds Like a Pingback or a Trackback Webmention is an update/replacement for Pingback or Trackback. Unlike the older protocols, the specification is recommended by the W3C as well as an active community of individuals using it on their sites.

Open Settings → Webmention, or IndieWeb → Webmention if the IndieWeb plugin is active: On the Webmention Settings page, decide which post types you want to enable Webmentions for. By default, posts and pages. Set a page to redirect homepage mentions to. This will automatically enable Webmentions for that page. On classic themes, enable or disable the Webmention form using the checkbox in Webmention settings. On block themes with WordPress 6.4 or newer, the Webmention Form block is automatically added after the Comments block. Move or remove it in the Site Editor. If Block Hooks are unavailable or disabled, use the settings checkbox to control the classic form. You can also insert the Webmention Form block manually in the block editor. It displays a form when Webmentions are open for the post and avoids duplicate forms for the same post. The help text can be customized in Webmention settings. You can use the send_webmention($source, $target) function and pass a source and a target or you can fire an action like do_action('send_webmention', $source, $target).

You can enable receiving Webmentions for attachments in Webmention settings. You can enable sending Webmentions for media links in the settings. Please note that most receivers of Webmentions do not support receiving them to image, audio, and video files. In order to support receiving them on WordPress, Webmention endpoint headers would have to be added at the webserver level.

WordPress stores comments against individual posts, pages, or other post types. To collect mentions of your homepage, choose a page in Webmention settings. For archive pages and other URLs, use the webmention_post_id filter to assign incoming mentions to a post or page. In the below example, if there is no page returned it will send mentions to a catch-all post. You can also have unique posts per URL. function handle_other_webmentions($id, $target) { // do nothing if id is set if ($id) { return $id; } // return "default" id if plugin can't find a post/page return 9247; } add_filter("webmention_post_id", "handle_other_webmentions", 10, 2);

The URL for the Webmention endpoint, which you can view in the source of your pages, should be excluded from any server or plugin caching. As Webmention uses the REST API endpoint system, most up to date caching plugins should exclude it by default.

Webmentions have the ability to act as rich comments. This includes showing avatars. If there is an avatar discovered, the URL for it will be stored. This can either be reflect something from the media library or a URL of a file. If the file is broken, it will store a local copy of the default gravatar image. There are no Webmention headers on some pages of my site Webmention headers are only shown if Webmentions are available for that particular URL. If you want to show it regardless, you can add below to your wp-config.php file. define( 'WEBMENTION_ALWAYS_SHOW_HEADERS', 1 );

This plugin includes several enhancements to the built-in WordPress commenting system to allow for enhancement, while allowing existing methods to offer customization. It customizes the classic defaults for WordPress to account for webmentions by using a custom comment walker that minimally changes to defaults. By default, many themes provide a custom callback to the wp_list_comments function. This plugin adds several enhancements to that. For one, the custom callbacks argument is usually a string with the function name. We enhance it to behave as normal in that case, but if an array is passed, to allow specific callbacks per the key of the array, or the 'all' key as a default. This means each comment type, which would be each webmention type or otherwise, can have its own custom callback. It introduces a new version of the default function for html5 comments, adding correct microformats2 markup, and for webmentions, a proper site citation, e.g. Bob @ Example.Com as well as a hook, webmention_comment_metadata which offers a comment object as the sole argument, to add arbitrary metadata. This would be overridden by any custom comment rendering done by themes. There is an option within the plugin to show webmentions not determined to be replies or comments inline, or to display them separately as avatar only lists. The wp_list_comments function is overridden to allow for the avatar_only option, which will render this, with a second option of overlay to overlay an icon reflecting the reaction type. Reactions are webmention types such as like, which there is no textual component to it. If you opt to display them as comments, the text will read that the author likes this post. While not all display options can be settings, we are looking to provide some simple options which could be customized in a theme if needed.