Filter Lines (Include / Exclude Keyword)

Keep or remove lines that contain a specific substring or keyword.

How It Works & Processing Standards

Keep or remove lines that contain a specific substring or keyword.

Your input data is never sent to any server and is securely processed on your device.

Current Limits

  • Maximum input length: 2,000,000 characters

Filter Lines (Include / Exclude Keyword) is a 100% free, browser-based online utility. All calculations and file conversions run locally inside your browser (Local-First) without sending data to remote servers, keeping your documents and inputs strictly private.

How to Use Filter Lines (Include / Exclude Keyword)

  1. 1
    Paste LinesEnter multi-line text or logs.
  2. 2
    Enter Keyword & ModeType keyword and choose include or exclude.
  3. 3
    Copy Filtered LinesSave your filtered output.

Common Use Cases

  • Extracting only ERROR lines from server log files or removing commented lines
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