Documentation | Configuring | Rules

PerfLint is a tool to identify unexpected performance levels of a Website, using WebPageTest to obtain results.

Installation

You can install PerfLint using npm:

npm install -g perflint

Usage

See the Command Line Interface documentation.

Configuration

See the Configuring PerfLint documentation.

Results

See the Exit Codes and Results documentation.

Example Results

These results are an example of the 'Stylish' formatter.

With errors

http://example.com — http://www.webpagetest.org/results.php?test=160301_S3_1F0H
    error  'SpeedIndex' is 5617 should be less than 2000  SpeedIndex
  warning  'requestsDoc' is 57 should be less than 30     requestsDoc
    error  'responses_404' is 1 should be 0               responses_404

✖ 3 problems (2 errors, 1 warning)

With too many warnings

http://example.com — http://www.webpagetest.org/results.php?test=160301_S3_1F0H
  warning  'SpeedIndex' is 5617 should be less than 2000  SpeedIndex
  warning  'requestsDoc' is 57 should be less than 30     requestsDoc
  warning  'responses_404' is 1 should be 0               responses_404

✖ 3 problems (0 errors, 3 warnings)

PerfLint found too many warnings (maximum: 1).

Contributors

• Matthew Harrison-Jones (@matthojo)