0 Day Analytics – WordPress Debugging & Monitoring Toolkit
0 Day Analytics
The all-in-one WordPress debugging & operations toolkit.
Real-time visibility into errors, crons, emails, HTTP requests, hooks, database tables, and site health — all from a single admin interface.
No Third-Party Data Collection
15+ Modules
PHP 7.4 – latest
WordPress 6.0 – latest
Feature Highlights
Every module is opt-in and performance-conscious. Enable only what you need.
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Error Log Manager
Read, search, and filter your PHP/WordPress error log without leaving the admin. Handles GB-sized logs with a reverse-line reader that never loads the full file into memory.
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PHP Fatal Error Tracker
Captures fatal errors into a dedicated database table — persists even after log rotation or truncation. Records error type, file, line, stack trace, and timestamp. Works even with WP_DEBUG disabled.
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Cron Manager
View, search, edit, manually run, and delete WordPress scheduled tasks. Shows next run time, recurrence interval, arguments, and last execution status.
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Transients Manager
Browse, search, edit, and safely delete database transients. Displays expiry time, serialised value (pretty-printed), and size. Supports bulk delete.
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HTTP Requests Viewer
Logs all outgoing wp_remote_* calls. Records URL, method, status code, response time, triggering plugin, user, and response detail. Export to CSV.
✉️
Mail Logger & Composer
Records every wp_mail() call. View rendered body, resend any email, or compose new ones. Supports HTML and plain-text previews with CC/BCC.
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SMTP Configuration
Configure custom SMTP settings with a built-in test email tool. Supports TLS/STARTTLS with debug output logging.
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WP Hooks Monitor
Define which actions and filters to observe. Records each invocation with parameters, return values, and full stack backtraces. Organise into named groups.
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DB Table Manager
Browse, search, edit, and delete records across any database table — including custom plugin tables. Supports truncation and table drop with confirmation.
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Site Security Scanner
Runs 32+ automated checks across Security, Speed, and Resources categories. Presents a scored dashboard with actionable recommendations.
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Google PageSpeed
Analyse any URL with Google PageSpeed Insights API. Displays Performance, Accessibility, Best Practices, and SEO scores for desktop and mobile.
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URL Tracker & Asset Analyser
Track visited page URLs. Collect all associated JS, CSS, and media assets with file sizes. Audit page weight and detect performance regressions.
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Code Snippets
Write, save, and execute custom PHP snippets from the admin. Supports shortcodes, individual enable/disable, and sandbox safety checks.
🖥️
Server Info
Real-time server metrics: CPU load, memory usage, disk space, PHP version, and active extensions. Admin-bar badges and dashboard widget.
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Recovery Mode
Generate single-use recovery links delivered via Slack or Telegram. Designed for emergency recovery when the site is inaccessible.
What Makes 0 Day Analytics Stand Out?
Unlike scattered single-purpose plugins, 0 Day Analytics unifies 15+ tools into one cohesive, privacy-first package.
Zero Data Leaves Your Server
Every module runs entirely inside your WordPress installation. No analytics beacons, no telemetry, no SaaS dependency. Your data stays yours.
One Plugin Replaces Many
Instead of installing separate plugins for error logging, cron management, mail logging, SMTP, transients, DB browsing, and security scanning — get everything in a single, well-tested package.
Performance-First Architecture
The error log viewer uses a reverse-line reader for GB-sized files. URL tracking uses SQL-level increments. Every module is designed for minimal footprint.
Captures Fatals Even with WP_DEBUG Off
The PHP Fatal Error Tracker writes to its own database table using PHP’s shutdown handler. You’ll always know when something breaks, regardless of your debug settings.
Truly Modular
Every feature is opt-in. Disable modules you don’t use — zero overhead. Unlike monolithic “do everything” plugins, unused modules don’t load any code.
Deep Hooks Inspection
No other free plugin lets you selectively monitor specific WordPress hooks with full argument capture, return-value recording, and complete PHP backtraces.
Emergency Recovery Built In
Generate single-use recovery links delivered to Slack or Telegram. When a fatal error locks you out, you can get back in without SSH access.
Developer-Grade, Admin-Friendly
Built with WordPress coding standards, proper nonces, capability checks, and escaping throughout. Dark mode, CSV exports, and Screen Options on every page.
How It Compares
See how 0 Day Analytics stacks up against popular alternatives.
| Feature | 0 Day Analytics | Query Monitor | WP Crontrol | WP Mail Log | Error Log Monitor |
|---|---|---|---|---|---|
| Error Log Viewer (large-file safe) | ✓ | ✗ | ✗ | ✗ | ✓ |
| PHP Fatal Error Tracker (DB-backed) | ✓ | ✗ | ✗ | ✗ | ✗ |
| Fatals Tracked with WP_DEBUG Off | ✓ | ✗ | ✗ | ✗ | ✗ |
| Cron Manager (view/edit/run/delete) | ✓ | ✗ | ✓ | ✗ | ✗ |
| Transients Manager | ✓ | ~ | ✗ | ✗ | ✗ |
| HTTP Requests Logger | ✓ | ✓ | ✗ | ✗ | ✗ |
| Mail Logger & SMTP | ✓ | ✗ | ✗ | ✓ | ✗ |
| Compose & Resend Emails | ✓ | ✗ | ✗ | ✗ | ✗ |
| Hooks Monitor (selective capture) | ✓ | ~ (page-level) | ✗ | ✗ | ✗ |
| Database Table Browser/Editor | ✓ | ✗ | ✗ | ✗ | ✗ |
| Site Security Scanner (32+ checks) | ✓ | ✗ | ✗ | ✗ | ✗ |
| Google PageSpeed Integration | ✓ | ✗ | ✗ | ✗ | ✗ |
| URL Tracker & Asset Analyser | ✓ | ✗ | ✗ | ✗ | ✗ |
| Code Snippets Engine | ✓ | ✗ | ✗ | ✗ | ✗ |
| Recovery Mode (Slack / Telegram) | ✓ | ✗ | ✗ | ✗ | ✗ |
| Dark Mode | ✓ | ✓ | ✗ | ✗ | ✗ |
| CSV Export (all modules) | ✓ | ✗ | ✗ | ✗ | ✗ |
| No External Data Collection | ✓ | ✓ | ✓ | ✓ | ✓ |
| Multisite Aware | ✓ | ✓ | ✓ | ~ | ✗ |
✓ = Full support
~ = Partial / limited
✗ = Not available
Who Is It For?
Whether you’re a solo developer or managing dozens of client sites, 0 Day Analytics saves hours of context-switching.
👩💻
WordPress Developers
Debug PHP errors, inspect hooks, trace HTTP calls, and monitor crons — all without leaving wp-admin or installing 5 different plugins.
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Agency Teams
Standardise debugging across client sites. The modular design means you enable only what each site needs. CSV exports make reporting effortless.
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Site Administrators
Monitor email delivery, keep crons healthy, scan for security issues, and track site performance — without developer credentials or SSH access.
Built the Right Way
Quality engineering under the hood.
⚡
Performance-First
Reverse-line reader for error logs. SQL-level increments for URL tracking. Batch database operations. Lazy module loading. Every decision is optimised for speed.
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Security Hardened
All output escaped. Nonces on every form. Capability checks on every action. Encrypted option storage. PHPCS and PHPStan enforced. No eval(). No remote code execution.
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WordPress Standards
Uses WP_List_Table, Settings API, Cron API, and REST API properly. Full i18n support. Screen Options on every page. Dark mode and responsive layouts.
Ready to Take Control of Your WordPress Site?
Install 0 Day Analytics and get full visibility into your site’s internals — without third-party services, without bloat, without compromise.