Flutter Log Explorer
Diagnostic log analysis, real-time filtering, and stream inspector for Flutter
- Kind
- Developer Tools
- Year
- 2024
- Role
- Creator & Lead Developer
- Status
- Live
The problem
Developers frequently lose critical exceptions inside wall-of-text debug consoles. Standard IDE consoles lack multi-dimensional filtering, persistent query bookmarks, and structured JSON payload viewers.
The approach
Constructed a low-overhead logging companion that parses incoming stdout streams and DevTools socket connections, displaying structured events with instant log-level badges, stack trace foldouts, and exportable incident reports.
How it is built
Flutter Desktop, Dart, DevTools Service Protocol, SQLite, WebSockets
- 01Buffered stream reader capable of ingesting 10,000+ log lines per second without UI stutter
- 02Virtual scroll list rendering only the visible viewport log rows
- 03Built-in JSON tree formatting and syntax highlighting for API request/response payloads
- 04Local indexed search using client-side inverted index for zero-latency queries
What it does
- Live stream filtering by severity (Verbose, Debug, Info, Warning, Error, Fatal)
- Regex and tag-based query bar with history persistence
- Formatted JSON viewer with collapsible nodes and copy-payload buttons
- Stack trace de-obfuscation and clickable file paths
- Session export to JSON and NDJSON for team troubleshooting
Challenges and how we solved them
Preventing memory bloat during hours-long mobile app profiling sessions.
Implemented a sliding-window in-memory ring buffer with optional spillover to an encrypted local SQLite database for historical lookback.
Seamless integration with Flutter run and Dart VM Service protocol.
Built a plug-and-play Dart client package with automatic service extension registration.
Flutter Log Explorer is in active production and continuously maintained.