What's a HAR file?
A HAR file is a log of HTTP requests, typically exported from a web browser. More info at this Wikipedia article.
How do I capture a HAR file?
This varies from browser to browser. There are guides for some of them here.
How do I view/analyze a captured HAR file?
I recommend Google's HAR Analyzer for this.
Why should I clean a HAR file?
A HAR file captured via the browser usually includes a lot of noise, like requests to fetch assets (images, CSS), analytics requests and requests from social widgets (to name a few).
It's usually a good idea to clean these up before sending the HAR file to a reviewer, so they can focus only on the important requests.
Even if you are the reviewer yourself, you can clean the HAR file first to remove the clutter.
How do I use HAR Cleaner?
- Open a HAR file from the 'Choose a HAR file' button.
- Uncheck any requests that you want removed.
- Use the search option to quickly wipe out large chunks of similar requests.
- Click 'Save' button to download the cleaned HAR file. The new file will have a _cleaned suffix in the filename.