Tran Ngoc Tuan Anh

<blockquote>
<p><strong>This plugin is now migrated into the <a href="https://wordpress.org/plugins/slim-seo/" rel="ugc">Slim SEO</a> plugin and will be maintained within Slim SEO. Please use Slim SEO instead.</strong></p>
</blockquote>
<p>Avoid 404 errors as it affects your SEO badly. The 404 error pages hurts the SEO rank of your site if you have many 404 links. You can see the list of 404 pages in Google Console (former Google Webmaster Tools). Install this plugin, and it will take care of all your 404 errors.</p>
<h3>What is Better 404 Redirect To Homepage</h3>
<p><strong>Better 404 Redirect To Homepage</strong> is a simple but amazing plugin which handles all 404 errors for you. It will redirect all 404 errors to your homepage, using 301 redirection.</p>
<p>The plugin is minimal and doesn’t have any settings. All you need to do is just install it and forget. It will automatically do its job.</p>
<h3>Features</h3>
<ul>
<li>It just works. No settings in the admin.</li>
<li>Auto detects and ignores admin, cron and XML-PRC requests</li>
<li>Works with bbPress profile links</li>
</ul>
<h3>You might also like</h3>
<ul>
<li><a href="https://wpslimseo.com" rel="nofollow ugc">Slim SEO</a>: A fast, lightweight, full-featured SEO plugin with minimal configuration. Slim SEO has a redirection module, which contains the 404 to homepage settings.</li>
<li><a href="https://metabox.io" rel="nofollow ugc">Meta Box</a>: The best WordPress plugin for creating custom post types and custom fields.</li>
<li><a href="https://gretathemes.com" rel="nofollow ugc">GretaThemes</a>: Clean and elegant WordPress themes (free and premium).</li>
<li><a href="https://wpautolistings.com" rel="nofollow ugc">Auto Listings</a>: The best WordPress plugin for car dealership and car selling websites.</li>
</ul>


Better 404 Redirect To Homepage

Auto redirects all 404 error links to homepage.

Uffe Fey

<p>This plugin enables safe mode for WordPress. This means:</p>
<ul>
<li>No plugins will be loaded.</li>
<li>A default theme will be temporarily activated (if it is installed).</li>
</ul>
<h4>Why is this useful?</h4>
<p>Whenever something’s wrong with a WordPress site, the first rule of thumb is to disable plugins and revert to the default theme if possible. Depending on the nature of the error, that is not always an option. The back end (dashboard) may also be down or you may not have FTP access to manually disable plugins and themes.</p>
<p><strong>Enter Safe Mode</strong>. Safe Mode will completely disable all plugins and the active theme temporarily for a single page view – ultimately enabling you to log in and remove the offending plugin. (This is not guaranteed to work in all scenarios, please read the disclaimer)</p>
<h4>How does it work?</h4>
<p>If your site crashes due to an upsetting plugin or theme, all you have to do is add a querystring parameter to the URL. Doing that will temporarily disable all plugins for that single page view, as well as temporarily activate a default theme if one is installed.</p>
<p>Let’s say you’re the owner of www.example.com. To enable safe mode for one particular page, you add this to the URL: “?safe_mode=1”.</p>
<p>Bear in mind that you have to do this for every view. The querystring parameter isn’t carried on automatically. So, for instance:</p>
<ul>
<li>If you need to log in, go to: www.example.com/wp-admin/?safe_mode=1</li>
<li>If you need to go to plugin management, go to: www.example.com/wp-admin/plugins.php?safe_mode=1</li>
<li>If you need to go to theme management, go to: www.example.com/wp-admin/themes.php?safe_mode=1</li>
</ul>
<p>When you go to plugin management, all plugins will seem to be deactivated (due to the way Safe Mode works), but you’ll still be able to explicitly deactivate each plugin. Just use the “Deactivate (safe mode)” option.</p>
<h4>What are default themes?</h4>
<p>By default theme, I’m referring to the themes that ships with WordPress, you know, the Twenty “something” ones.</p>
<p>The plugin checks if any of these themes are installed, and if so, activates the first theme it encounters. Thus I highly recommend that you keep one of those themes installed at all times. If you don’t, safe mode will keep your current active theme, and that theme may just be the offender – leaving safe mode useless. Keep this in mind.</p>
<h4>Disclaimer</h4>
<p>This plugin will be able to handle many scenarios, but not all. If your site’s crash is caused by a database crash, or something that simply brings down the PHP parser, like a call to an undefined function, Safe Mode won’t be able to do anything about that.</p>


Safe Mode

I love using Health Check. And starting today I love this as well. 
Using a URL parameter for selective application is ***** alone. 

Keep it up!

Fantastic.

Makes it possible to enable safe mode for WordPress. In safe mode, plugins will not be loaded and the default theme (if installed) will be activated.

Better 404 Redirect To Homepage vs Safe Mode