Log Masker
Sanitize server and application logs by masking sensitive data - 100% client-side, nothing leaves your browser.
100% Private - Zero Server Contact
All masking runs entirely in your browser using JavaScript regex. Your log data never leaves your device. Safe for production credentials, PII, and confidential infrastructure details.
Masking Rules
Custom Patterns
Input Log
Drop a log file here, or browse
Supports .log, .txt, .csv, .json, .yaml, .env, .conf
Or paste directly below
Masked Output
Masked log will appear here
Paste or upload a log file to begin
About Mask Server & App Logs
The Mask Server & App Logs is a professional, client-side utility built to perform high-fidelity conversions and data manipulations directly on your device. Powered by next-gen browser technologies like regex masking patterns and text parsing engines, the tool achieves lightning-fast processing speeds without needing a remote cloud backend. Clean server logs, hide IP addresses, and mask authentication tokens directly on your device before sharing.
Our Mask Server & App Logs operates by reading your files or text inputs as raw byte buffers inside browser runtime scope. Rather than uploading payloads to a remote host, the application parses the structure in client-side memory. Specifically, it reads logs in memory, matches private tokens using regex models, and replaces matched words with labels. This setup guarantees instant feedback, high-performance execution, and robust support for large file queues.
