Log Visualizer
What does this Log Visualizer do?
Our Log Visualizer instantly analyzes your logs for four critical categories: Errors and failures that indicate system problems, Performance issues like timeouts and slow queries that impact user experience, Security threats including unauthorized access attempts, injection attacks, and token failures, and Anomalies or unusual behavior patterns that could signal underlying issues.
The entire analysis process happens entirely within your browser using client-side JavaScript — FlowZap does not transmit, store, or retain any of your log data whatsoever. Before analysis, we automatically remove sensitive information such as API keys, email addresses, IP addresses, bearer tokens, JWTs, credit cards, and passwords, replacing them with placeholders to protect your privacy while preserving the structural patterns needed for visualization. Once complete, you are immediately directed to an interactive FlowZap Playground diagram with highlighted issues and annotated markers showing exactly where problems were detected.
Upload .log / .txt / .json file
Tool Specifications
| Name | Log Visualizer |
| Price | Free (no account required) |
| File size limit | 5 MB (client-side validation) |
| Redaction mode | Client-side placeholder masking |
| Output | FlowZap Playground session with issue markers |