Log Watcher for Windows

A Stream Deck key that turns red when your log shows an error

To be alerted when an error appears in a log file on Windows, add Log Watcher for Windows to your Stream Deck and point its Watch Log key at the file. When a new line with an error appears, the key turns red and shows how many error lines there are, for build logs, backup logs, game server logs and your own scripts.

Get it on the Elgato Marketplace

Stream Deck plugin · Works on Windows 10 or later with the Stream Deck app 6.9 or later.

What you can do

• Count only new errors: Watch Log counts lines added after you set up the key, so old lines in the file are left out.
• Match what matters to you: an error pattern (default error|fail|exception), an optional success pattern that turns the key green, and an ignore pattern; regular expressions, not case sensitive.
• Clear and open fast: press to clear the count; hold the key to open the log file.
• See progress on a key: Last Line shows the latest line of a log, such as the progress of a copy, a build or a game server; press to open the file.
• Follow logs that change name: enter a folder and the newest file whose name matches (for example *.log) is followed.
• Handle real-world logs: a log overwritten on every run is read again from its first line, and a renamed or rotated log keeps its reading position.
• Keep your count: the count survives Stream Deck app restarts.
• Read the log while it is being written, if the writing program allows reading; UTF-8, UTF-16 (with BOM) and Shift_JIS.
• Runs entirely on your PC: the log file is only read, never changed, and nothing is sent anywhere. English and Japanese.

How it works

1. Install the plugin from the Elgato Marketplace. In the Stream Deck app, drag Watch Log onto a key.
2. In the key's settings, enter the log file, or a folder with a name pattern such as C:\server\logs\*.log. Change the error pattern if you like.
3. When an error line is written, the key turns red with the count. Press it to clear the count.

Get Log Watcher for Windows on the Elgato Marketplace

Questions

Limits

• A program that opens the log exclusively (no reading by others) makes the key show CAN'T READ while it holds the file.
• While the key is not visible, the file is not read; lines written meanwhile are counted when you come back to the page.
• Keys only; Stream Deck + dials are not supported.
• Windows only (Windows 10 or later).