Common Log Parser
Paste Common Log Format lines to break it down into readable components — with a field-by-field breakdown and, where relevant, its structure tree. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
127.0.0.1 - frank [...] "GET /index.html HTTP/1.1" 200 2326
Example Output
GET /index.html, status 200
How to Use
- 1Paste the Common Log Format lines you want to parse into the input box.
- 2If the tool asks for an extra field (e.g. a JSON Pointer or JSONPath), fill it too.
- 3Click Parse (or press Ctrl+Enter).
- 4See the component breakdown in the Components tab, the tree structure in the Tree tab (when available), and the normalized JSON in the JSON tab. Click Copy to copy the JSON.
About Common Log Parser
Common Log Parser breaks lines in the Common Log Format (CLF) — the baseline format used by many web servers — into IP, identity, user, time, request line, status, and size. The tool summarizes the status-code distribution.
Useful for analyzing logs from any server that uses CLF.
FAQ
Is my data sent to a server?
No. The entire parsing is done in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.
How is this parser different from a validator or formatter?
A parser turns raw input into its component structure so you can see its building blocks (and, for code, its AST/DOM tree). A validator only checks valid/invalid, and a formatter just tidies the layout. A parser focuses on "what it contains and how it is structured".