📋 Log File Splitter & Filter

Paste or upload a log file, narrow it down by pattern, line range or timestamp — then optionally split the result into several smaller files.

Timestamp detection is heuristic, not a real log parser. It looks for an ISO-ish timestamp at the very start of each line (optionally inside a single leading bracket), like 2026-08-20T14:03:11 or 2026-08-20 14:03:11.482Z. Lines that don't start that way are treated as having no timestamp — when a timestamp filter is active, such lines (including multi-line stack traces continuing a previous entry) are excluded. If your log format differs, use the pattern filter instead.

1. Paste or upload a log file

Or choose a text/log file

2. Filter (optional)

Text or regex pattern

Pattern type

Action

From line #

To line #

Timestamp from

Timestamp to

Leave the timestamp fields blank to skip that filter entirely. Values are compared as your browser's local time.

3. Result

4. Split into chunks (optional)

Splits the result above (or the raw input, if you haven't filtered) into several downloadable pieces.

Split mode