JFG Media

<p>The plugin catches most JS errors, logs them, and displays them in a dashboard widget.</p>
<p>Here are some of its features:</p>
<ul>
<li>
Except for the plugin settings, there is no database storage involved. Log is written in a “.log” file.
</li>
<li>
Display latest JS errors in a dashboard widget.
</li>
<li>
Refresh errors from the dashboard widget.
</li>
<li>
See the full error log on a separate page.
</li>
<li>
Ignore errors if the user agent contains a specific string.
</li>
<li>
Ignore errors if the error contains a specific string.
</li>
<li>
Ignore errors if the script url contains a specific string.
</li>
<li>
See which page and which script triggered the errors.
</li>
<li>
Choose the maximum amount of errors to log per page load.
</li>
<li>
Exclude logging errors from specific post types.
</li>
<li>
Choose how ajax calls are made.
</li>
</ul>
<h4>Developer hooks and filters</h4>
<p>The plugin cleans the log every 24 hours, to only keep the last 100 entries.<br />
You may use the “jserrlog_max_log_entries” WP filter to enable more or less entries, by returning an integer: <code>add_filter('jserrlog_max_log_entries',function(){return 200;})</code></p>
<p>Alter error data:<br />
You may use the “jserrlog_pre_insert_error” WP filter to modify the error data before it’s inserted into the log file: <code>add_filter('jserrlog_pre_insert_error',function($error_data){return $error_data;})</code></p>
<p>Trigger integrations:<br />
You may use the “jserrlog_after_log” WP hook to trigger an action (Slack notification, etc.) after an error was logged: <code>add_action('jserrlog_after_log',function($error_data){//do something})</code></p>
<p>Backup old errors:<br />
You may use the “jserrlog_before_log_maintenance” WP hook to trigger an action (archive errors, etc.) before old errors are deleted: <code>add_action('jserrlog_before_log_maintenance',function($errors){//do something})</code></p>
<p>Request hardening:<br />
You may use the “jserrlog_enforce_same_host_origin” WP filter to require same-host Origin/Referer checks for logging requests (default true): <code>add_filter('jserrlog_enforce_same_host_origin',function(){return true;})</code><br />
You may use the “jserrlog_rate_limit_requests” and “jserrlog_rate_limit_window” WP filters to control request throttling (defaults: 60 requests per 60 seconds): <code>add_filter('jserrlog_rate_limit_requests',function(){return 120;}); add_filter('jserrlog_rate_limit_window',function(){return 60;});</code><br />
You may use the “jserrlog_max_payload_bytes”, “jserrlog_max_batch_errors” and “jserrlog_max_error_field_length” WP filters to limit incoming payload sizes (defaults: 16384 bytes, 20 errors per batch, 512 chars per field): <code>add_filter('jserrlog_max_payload_bytes',function(){return 32768;});</code><br />
You may use the “jserrlog_duplicate_window” WP filter to suppress duplicate errors for a short period (default: 60 seconds): <code>add_filter('jserrlog_duplicate_window',function(){return 30;});</code></p>
<h4>Multisite</h4>
<p>The plugin works with multisite. There’s one error log per site.</p>


JS Error Logger

Logs front-end javascript errors, and displays them in a dashboard widget

WP Guru

<h3>Best Error Log Viewer Plugin for WordPress</h3>
<p>A Lightweight Plugin to Handle Error Logs easily and efficiently.</p>
<p>Error Log Viewer By WP Guru is a great Free WordPress plugin if you are looking to manage Error log entries and kill errors on time. Error logs help you monitor your site and provide visibility into important changes that occur on your website. PHP error logs, including WordPress logs, can help you to spot problems and identify the offending plugin, theme, or custom code.</p>
<p>Logging errors is considered one of the top “best practices” in software development; it becomes more important as your website grows and scales.</p>
<p>Additionally, you can track all types of errors based on Plugins, Themes, and WP Core or custom code and resolve exceptions to get optimized performance results.</p>
<p>Monitoring PHP errors is something you need to do if you want to keep your WordPress website secure, healthy, and fast. If not fixed, PHP errors can indeed reduce your website performance and increase your website’s vulnerability to downtime and hackers.</p>
<p><strong>Like this plugin?</strong> Consider leaving a <a href="https://wordpress.org/support/view/plugin-reviews/error-log-viewer-wp?filter=5" rel="ugc">5 star review</a>.</p>
<h4>Features</h4>
<ul>
<li>Filter Error Log by Date</li>
<li>Filter Error Log by Error types</li>
<li>Error Log statistics based on Plugins and Themes as well</li>
<li>Download the Log File</li>
<li>Delete Log File</li>
</ul>


Error Log Viewer By WP Guru

Error Log Viewer by WP Guru simplifies viewing and analyzing PHP error logs, making it easier to monitor and resolve errors quickly.

JS Error Logger vs Error Log Viewer By WP Guru