Drop log files here

Open one or more .log files: CMTrace, SCCM/ConfigMgr, or plain text. Everything is parsed locally in your browser; nothing is uploaded.

Tip: press Ctrl+K for the command palette.

CMTrace Web is a fast, modern, 100% client-side reimplementation of the classic CMTrace log viewer for SCCM / ConfigMgr logs. It runs entirely in your browser (no server, no uploads) and works directly from a local file:// path or any static host.

Features

Reads CMTrace, legacy SCCM/ConfigMgr and plain-text log formats.
Virtual scrolling for smooth viewing of 100k–1M+ lines.
Live filtering by text, severity, component, thread and time range.
Find with regex & case options, plus persistent highlight rules.
Built-in Win32 / HRESULT error-code lookup.
Merge multiple logs, live tail (follow), and export to log/CSV.
Light & dark themes, command palette, keyboard-first workflow.

Keyboard shortcuts

Action	Shortcut
Open files	`Ctrl`+`O`
Find	`Ctrl`+`F`
Find next / previous	`F3` / `Shift`+`F3`
Filter	`Ctrl`+`R`
Highlight rules	`Ctrl`+`H`
Go to line	`Ctrl`+`G`
Error code lookup	`Ctrl`+`E`
Command palette	`Ctrl`+`K`
Clear all	`Ctrl`+`L` / `Shift`+`Del`
Toggle live tail	`Ctrl`+`End`
Close dialog / find bar	`Esc`

CMTrace Web is an independent, open reimplementation built for convenience. It is not affiliated with, endorsed by, or sponsored by Microsoft. CMTrace, Configuration Manager and SCCM are trademarks of Microsoft Corporation.