Open LOG Online
Open a log file and search it.
Drop a file here
or
Your file stays on your device.
- Preview: Excellent
- File info: Yes
- Search: Yes
- Editing: Yes
About LOG files
Log files record what a program or server did, usually one event per line with a timestamp. They grow quickly and can get large.
Open Online shows logs with line numbers and fast search, without uploading them, which matters because logs often contain internal details.
What you can do here
- Line numbers and syntax highlighting
- Search and replace
- Toggle word wrap
- Edit the text and save a copy
- See encoding, line endings, line and word counts
Limitations
- Very large files (over 50 MB) open read-only to keep the browser responsive.
Privacy
The file is read by your browser and stays on your device. Open Online has no server that could receive it, and nothing is stored once you close the tab. Privacy policy
Common questions
How large can a log file be?
Files up to a few hundred megabytes open fine in desktop browsers. Above 50 MB the file opens read-only to stay responsive.
Can I filter lines?
Use search to jump between matches. Filtering by pattern is not available yet.