WordPress Debug Log Analyzer
Analyze WordPress debug.log files locally in your browser. Group repeated PHP errors, identify likely plugin/theme sources, spot memory exhaustion and deprecation noise, and prioritize what to fix first.
Runs locally in your browserYour log stays in your browser. WPToolix does not upload it.
Analyze a WordPress debug.log without uploading it
A busy WordPress debug log can contain hundreds of repeated warnings around the one fatal error that actually broke a request. This analyzer processes the log locally in your browser, groups repeated messages, classifies common PHP and WordPress error levels, and highlights likely plugin or theme paths so you can decide where to investigate first.
What the analyzer looks for
- PHP fatal errors, parse errors, warnings, notices and deprecated messages
- WordPress database errors and common PHP uncaught exceptions
- Repeated messages, with counts instead of forcing you to read the same line hundreds of times
- Plugin and theme slugs found in wp-content paths
- Allowed-memory-size exhaustion
- File and line references when they are present in the log message
The tool does not send your log to WPToolix. Analysis happens in your browser.
How to use the WordPress Debug Log Analyzer
- Choose your
debug.logfile or paste a section of the log. - Run the analysis.
- Start with Fatal/Parse and memory errors before lower-severity warnings and deprecations.
- Review the likely source path. A plugin name in a stack trace is a clue, not automatic proof that the plugin caused the original problem.
- Reproduce the problem on staging after making one controlled change, then compare the new log.
How WordPress debug logging works
WordPress uses WP_DEBUG to enable its debugging mode. When WP_DEBUG_LOG is enabled, errors can be written to wp-content/debug.log by default, or to a custom path. WP_DEBUG_DISPLAY controls whether messages are displayed in generated pages. WordPress documentation recommends debugging on development or staging rather than leaving debug tools enabled on a public production site.
Why grouping repeated errors matters
A single recurring notice can generate thousands of lines during AJAX, cron or frontend requests. Frequency is useful evidence: a message that appears 900 times may deserve performance attention even if it is not fatal. But severity and timing still matter. One fatal error at the exact moment a checkout failed can be more important than hundreds of unrelated deprecation notices.
What a plugin or theme path really tells you
If an error references /wp-content/plugins/example-plugin/, the analyzer labels that plugin as a likely source. That does not prove the plugin is defective. Another plugin, a theme, custom code, invalid data or a WordPress/PHP compatibility change may have called into that code. Use the path as a starting point for reproduction and isolation.
Privacy and security
Debug logs can contain filesystem paths, URLs, query fragments, email addresses, tokens or other sensitive data. Do not post a complete production log publicly. WordPress also warns that a log stored in a publicly accessible location can expose sensitive information. Remove or protect debug logs after troubleshooting.
Limitations
This is a pattern-based analyzer, not a PHP runtime or a replacement for a debugger. It cannot reproduce the request, inspect your database, know which plugins are active, prove causation from a stack trace, or safely recommend deleting code. Some hosts also format PHP logs differently, so unusual lines may be classified as Other.
Frequently asked questions
Where is WordPress debug.log?
With the standard WP_DEBUG_LOG setting, it is usually wp-content/debug.log. WordPress also supports a custom log path.
Should WP_DEBUG stay enabled on a live site?
WordPress documentation recommends the debugging tools for local development and staging rather than normal production use. If temporary production logging is necessary, avoid displaying errors publicly and protect the log.
What should I fix first?
Start with fatal/parse errors, uncaught exceptions and memory exhaustion tied to the failing request. Then investigate recurring warnings. Deprecations are important for future compatibility but often are not the immediate cause of an outage.
Does a plugin name in the report mean the plugin caused the problem?
No. It means that plugin appeared in the relevant path or message. Confirm with controlled testing.
Related tools: If the report shows an allowed-memory-size error, use the WordPress Memory Limit Generator. If you need redirect rules while troubleshooting URL changes, use the .htaccess Redirect Generator.