./log-analyzer
Free Log Analyzer Online
Upload a log file (Apache, Nginx, or generic application logs) to extract error lines, top IP addresses, HTTP status code distribution, and log level counts. Files are processed entirely in your browser.
max 50 MB · stays in your browser
How to Use
- 01Upload a .log or .txt file, or paste log content directly.
- 02Wait a moment for analysis (supports files up to 50 MB).
- 03Review the summary: IPs, status codes, log levels, and error lines.
FAQ
Which log formats are supported?▼
The regex patterns are generic and work across Apache Common/Combined log format, Nginx default format, and most application logs that include log levels or IP addresses.
Are my log files uploaded to a server?▼
No. Files are read and analyzed entirely in your browser. Nothing is transmitted.
What is the file size limit?▼
Currently 50 MB. For larger files, split them locally using split or head/tail before uploading.