Yarick

<p>This plugin notifies user if browser check failed. Available checks:</p>
<ul>
<li>Browser version (Chrome, Firefox, Safari, Opera, IE)</li>
<li>JavaScript enable</li>
<li>Cookie enable (require JavaScript)</li>
<li>Adobe Flash Player version (require JavaScript)</li>
</ul>
<p>You can select style for notice. Or disable plugin CSS and write own.</p>
<p>User can close notice to time you set in minutes. It use cookie. You can disable close button.</p>
<p>Also you may set next check time in days. When check is successful.</p>
<p>Browser Check may be integrated with theme. Just place this code: “do_action(‘browser_check’)” in your theme. And disable plugin css from “Settings -> Browser Check” page and write own css for best look in your theme.</p>
<p>Supported languages</p>
<ul>
<li>English</li>
<li>Russian</li>
</ul>


Browser Check

Check browser version, JavaScript, Cookie, Adobe Flash Player version. Warn user if old.

pluginkollektiv

<p>When a post is saved or published, this plugin will</p>
<ul>
<li>scan the post’s content for any URLs,</li>
<li>ping all the URLs found (except relative ones),</li>
<li>detect any broken or unreachable URLs and list them for review and correction.</li>
</ul>
<p>No more publishing of links or images broken by typos or incompletely copy-pasted URLs!</p>
<h3>Support</h3>
<ul>
<li>Community support via the <a href="https://wordpress.org/support/plugin/spcl" rel="ugc">support forums on wordpress.org</a></li>
<li>We don’t handle support via e-mail, Twitter, GitHub issues etc.</li>
</ul>
<h3>Contribute</h3>
<ul>
<li>Active development of this plugin is handled <a href="https://github.com/pluginkollektiv/spcl" rel="nofollow ugc">on GitHub</a>.</li>
<li>Pull requests for documented bugs are highly appreciated.</li>
<li>If you think you’ve found a bug (e.g. you’re experiencing unexpected behavior), please post at the <a href="https://wordpress.org/support/plugin/spcl" rel="ugc">support forums</a> first.</li>
<li>If you want to help us translate this plugin you can do so <a href="https://translate.wordpress.org/projects/wp-plugins/spcl" rel="nofollow ugc">on WordPress Translate</a>.</li>
</ul>
<h3>Credits</h3>
<ul>
<li>Author: <a href="https://sergejmueller.github.io/" rel="nofollow ugc">Sergej Müller</a></li>
<li>Maintainers: <a href="https://pluginkollektiv.org" rel="nofollow ugc">pluginkollektiv</a></li>
</ul>


Save Post. Check Links.

Verifies URLs of links in your content are reachable when saving a post in WordPress.

Browser Check vs Save Post. Check Links.