Lightweight profiler with a Frontend Dev Toolbar only: request metrics, slow components, timeline, and SQL. No admin UI, no trace storage, no debug report.







Overview

Why use it
See per-request data at a glance: total time, TTFB, PHP/SQL, memory, snippet and SQL counts, top slow components, and recommendations (Advisor). All in a compact panel in the bottom-right corner of the page — only for users logged into Manager.

Features

• Frontend Dev Toolbar — corner panel: time, memory, snippets, SQL; click to open Overview, Slow Components, Timeline, SQL. Localization (ru/en/uk).
• MODX Pipeline — tracks MODX events (OnHandleRequest, OnLoadWebDocument, OnWebPagePrerender), snippets, chunks, plugins, SQL.
• Advisor — optimization tips: uncached snippets, N+1, slow queries, chunk overuse.
• Production-safe — sampling (1–100%), toolbar only when logged into Manager; overhead < 5%.

Limitations
pdoTools 3.x: Fenom snippets and pdoTools snippets (msProducts, pdoResources, etc.) in MODX 3 are not profiled automatically. See limitations.
What works: MODX events, SQL, memory, total time, standard [[!Snippet]] tags (partially).

Quick start

1. Install — install via Packages → Installer.
2. Configure — Manage → System Settings, filter modx3profilertoolbar. Enable modx3profilertoolbar.enabled and modx3profilertoolbar.frontend_toolbar.
3. Verify — open any site page while logged into Manager. The Dev Toolbar will appear in the bottom-right corner.

Requirements

• PHP 8.1+
• MODX Revolution 3.x