Analyze Security Logs at Lightning Speed
The fastest desktop JSONL viewer built for security analysts, SOC teams, and DevOps engineers. Handle 10M+ rows and 5GB+ files with ease.
See It In Action
JSONL Viewer Pro makes analyzing massive log files effortless. Open 5GB files instantly, filter on nested fields, and export results—all with native Mac performance.
Watch Demo
See how fast you can analyze security logs with advanced filtering, nested object flattening, and real-time search.
Built for Security Operations
Stop struggling with command-line tools or waiting for Elasticsearch to spin up. Analyze Suricata, Zeek, EDR logs, and cloud audit trails instantly.
Suricata & Zeek Logs
Filter alerts by severity, hunt for suspicious IPs, and export filtered results. Handle daily 5GB+ log files without breaking a sweat.
Cloud Audit Logs
AWS CloudTrail, Azure logs, GCP audit logs. Nested JSON fields automatically flattened for easy filtering and sorting.
EDR/XDR Telemetry
Endpoint detection logs with deeply nested objects. Use numeric operators like alert.severity <= 2 for high-priority threats.
Powerful Features
Blazing Fast Performance
Multi-threaded parsing with simdjson. Built with C++ for native speed, not Electron bloatware. Opens 5GB files in seconds.
Nested Object Flattening
Automatically expands nested objects into columns: alert.signature, flow.bytes_toserver, user.profile.email. Filter on any nested field.
Advanced Filtering
Text search across all columns. Numeric operators: >100, <=50, !=0. Perfect for filtering by severity, byte counts, or timestamps.
Multiple File Formats
Supports .jsonl and .jsonl.gz (gzip compressed). Export filtered results. Quick stats showing min/max/avg values.
Column Management
Freeze important columns, hide/show any field, auto-sizing. Perfect for working with wide security log schemas.
Privacy First
Native Mac app. No internet required. Your data never leaves your machine. Small 6MB footprint. Zero telemetry.
Why Security Teams Choose JSONL Viewer Pro
Time Saved Per Week
Setup Cost Saved
Rows Per Second
Memory Efficient
What Security Professionals Say
"When I'm going through reams of logs I prefer a delightful UX over the CLI and this tool filled that gap for me. I looked far and wide for a fast and beautiful app before having the pleasure of coming across this one."
"I analyze IoT device logs with deeply nested sensor data. JSONL Viewer made it trivial to filter on device.temperature.celsius > 80 across millions of records. Saved me hours every week."
"Finally, a tool that can handle our daily Suricata logs without choking. The nested field flattening is a game-changer for hunting through alert metadata. Worth every penny."
Simple, Transparent Pricing
Individual
Perfect for solo analysts
- ✓ All features included
- ✓ Lifetime updates
- ✓ Email support
- ✓ Mac Silicon native
Enterprise
For large organizations
- ✓ Unlimited seats
- ✓ Dedicated support
- ✓ Custom features
- ✓ SLA guarantee