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New in 3.4.0 8 new features and 16 fixes November special 20% off every Pro plan with code NOVEMBER20 Black Friday 50% off every Pro plan until Sunday 29 November
WP Extended Modular WordPress toolkit , home
Debug Mode Pro

Turn WordPress debug mode on and off

Switch WP_DEBUG on when you need to see errors, and off again when you’re done, from the admin. You don’t need FTP or wp-config.php edits.

Get Pro from $29/year or read the Debug Mode docs

Included in every Pro plan, alongside all the other modules.

included in every Pro plan
Pro
last improved in
3.2.6
Developer Tools modules
6
A freelance web designer on a sofa with WP Extended open on her laptop, her dog asleep beside her

Why you need Debug Mode

Turning on debugging means opening wp-config.php on the server, changing a constant and remembering to change it back. On managed hosting, getting to that file can take longer than the fix.

What Debug Mode does

  • One switch Enabling the module turns WP_DEBUG on, and disabling it turns WP_DEBUG off.
  • Status notices The admin tells you when debugging is on, and if it was changed outside WP Extended.

Where Debug Mode helps

  • An account manager walking a client through WP Extended on a laptop in a café

    Troubleshooting

    See the PHP notices and warnings behind a white screen or broken feature.

  • A photographer in her studio with WP Extended open on a desktop monitor

    Staging sites

    Keep debugging on while building, then switch it off before launch.

★★★★★
“Previously I had to install multiple plugins for each feature of this plugin. Features I love: Export Users, Duplicate Pages & Posts, Insert Headers & Footers Snippets, Debug Mode, SVG Upload.”
Shahjahan Jewel WordPress.org review (opens in a new tab)

Recent changes

The latest updates to Debug Mode, from the WP Extended changelog.

Full changelog
  1. v3.2.6 21 Apr 2026
    • fixed

      Persistent admin notice remaining visible after disabling the module [Pro].

Debug Mode questions

Debug Mode documentation

No. It is part of WP Extended Pro.

No. Debug output can reveal file paths and other details. Switch it off when you’re finished.

Yes, but only a Super Admin can switch it on or off, because it edits wp-config.php for the whole network.

Pairs well with

All Developer Tools

Get Debug Mode with WP Extended Pro

Every Pro plan includes Debug Mode and the rest of the toolkit, with updates and support.

Download free See Pro pricing

Pro from $29 a year · 14-day money-back guarantee