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Best Free WordPress Plugins for Troubleshooting

7 plugins compared · Updated August 2026 · Troubleshooting

All 7 Free only Premium only

Choosing a WordPress plugin for troubleshooting comes down to a few things: whether it is still actively maintained, whether real users rate it well, and whether it does the specific job you need without dragging the rest of the site down.

We ranked 7 plugins using our WPScore, which weighs the user rating (adjusted for how many people actually rated it), how many sites run it, how recently it was updated, and which WordPress version it is tested against. 7 of them have enough public data to be scored; the rest are listed below the ranked block, clearly marked, rather than being given a number we cannot justify.

How this list is funded. Some links here earn us a commission if you buy. It costs you nothing extra, and it does not move anything up the list — the order comes from the WPScore, which is calculated from public ratings, install counts and update history. See the method.

At a glance

  1. 1. phpinfo() WP Best overall 81/100
  2. 2. WP Safe Mode 79/100
  3. 3. Troubleshooting 77/100
  4. 4. Conflict Finder 76/100
  5. 5. WP Mail Debugger 54/100
  6. 6. Rewrite Flush Button 46/100
  7. 7. Phpinfo 45/100
1 phpinfo() WP
Best overall Free by Exeebit

phpinfo() WP

Stop silent site breakages. The ultimate in-admin server audit & per-user troubleshooting tool built for agencies and professional developers.

4.4★
from 7 ratings
3k+
active installs
Updated
Aug 2026
Tested to
WP 7.1
81

WPScore

Read review View on WordPress.org
2 WP Safe Mode
Free by Marcus (aka @msykes)

WP Safe Mode

Disable plugins or switch themes for just you or the whole site for debugging, troubleshooting or accessing and restoring a broken website.

4.3★
from 8 ratings
2k+
active installs
Updated
May 2026
Tested to
WP 7.0.4
79

WPScore

Read review View on WordPress.org
4 Conflict Finder
Free by WP Fix It - WordPress Experts

Conflict Finder

Conflict Finder is a WordPress troubleshooting toolkit that helps diagnose plugin conflicts, theme issues, debugging errors, and email delivery proble …

4.5★
from 4 ratings
100+
active installs
Updated
Jun 2026
Tested to
WP 7.0.4
76

WPScore

Read review View on WordPress.org
5 WP Mail Debugger
Free by Timothy Jacobs

WP Mail Debugger

WP Mail Debugger captures and displays all emails sent through wp_mail() for debugging and troubleshooting.

5★
from 2 ratings
300+
active installs
Updated
Jul 2024
Tested to
WP 6.6.7
54

WPScore

Read review View on WordPress.org
7 Phpinfo
Free by Roland Rust

Phpinfo

Prints out your webservers php settings as well as other information about your WordPress installation.

3.5★
from 2 ratings
100+
active installs
Updated
Sep 2007
Tested to
WP 2.2.2
45

WPScore

Read review View on WordPress.org