Log File Viewer

An offline, FREE, multi-language app for opening, filtering and searching log files.

Log File Viewer is a fast, clean way to read log files on your phone. It could be that you're debugging an Android crash, reviewing a server access log, or scanning a JSON event stream, it parses your file, color-codes every level, and lets you find what matters in seconds.

Here are it's core features:

1. Auto-detects common formats

- Android logcat (brief and threadtime)
- JSON / NDJSON structured logs
- Apache / Nginx access logs
- Syslog
- ISO timestamp + level
- Plain text with embedded levels

2. Filter, search, focus

- Tap level chips to show only ERROR, WARN, INFO, DEBUG, TRACE
- Live count badges per level
- Plain-text search with prev/next match navigation
- Regex search (PRO) for power users

3. Built for reading

- Color-coded level badges
- Syntax highlighting for IPs, URLs, paths, numbers, JSON keys
- Word wrap, line numbers, adjustable font size
- Beautiful light and dark themes
- Tap any line for full details + copy

4. Smart stats

- Donut chart of level distribution
- Top recurring error messages
- File metadata: format, size, line count, time range

5 Bookmarks

- Mark important lines and jump back instantly

5. Share & export

- Export filtered results as a new log file

6. PRO unlocks

- Files up to 100 MB
- Regex search and filtering
- Custom highlight rules — color-code your own keywords
- Export filtered logs
- Unlimited bookmarks

Just download and get started. Open .log, .txt, .json, .csv, .out, .err and more. Works offline.