What is a .LOG file?
A .log file is a plain-text record an application writes as it runs, used for troubleshooting.
- Did you know
- Log files are how almost every program leaves a trail of what it did and when.
- Web servers often write logs in the NCSA Common Log Format, one of the oldest fixed-field text log layouts.
- Many system logs follow syslog, which tags each message with a severity from Emergency down to Debug.
- A .LOG file is plain text, so you can open and edit it in any text editor.
- What Analyser reads
- Identify log files and their origin - Apache, Nginx, syslog, Python, Java/Log4j, and Android logcat.
- Depth of analysis
- .LOG is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .LOG file
- Drag a .LOG file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.
- Related formats
- Browse the full list of supported file types.