Log Line Counter

Counting is the first question of any log review: how many, how often, how much. Log Line Counter tallies lines by level, by day, by client IP, or against any pattern you supply — every answer with exact numbers.

It runs instantly in the browser, so repeated counting across windows becomes a click rather than a grep pipeline.

• By level — severity histogram.
• By day — volume over dates.
• By IP — who is loudest.
• By pattern — arbitrary regex counting.
• Total — exact line count.

1. Paste log lines.
2. Pick a counting dimension.
3. Optional custom pattern.
4. Count. Bucket totals appear.

Example 1 — Severity mix. Count by level to see your ERROR:WARN:INFO ratio at a glance.

Example 2 — Day-over-day. Count by day to spot the spike that matters before reading a single line.

Example 3 — Custom pattern. Count lines matching "retry" or "deadlock" to quantify a failure loop.

• Instant tallies — no shell needed.
• Multiple dimensions — one tool for all.
• Regex support — arbitrary patterns.
• Private — all client-side.