# Diagnosing Web Applications with HAR file

In some circumstances it is more efficient to diagnose a web application issue by generating a HAR file and sharing with Agilicus Support.

### Google Chrome (And Derived Browsers Like Microsoft Edge)

In Google Chrome (and other Chrome-derived browsers such as Microsoft Edge), you can enter the developer mode (ctrl-shift-I or F12), and then select the 'Export HAR (sanitized)...)' button.

1. Open a new incognito window.
2. Click the more actions menu (...) to the right of the toolbar and select **More tools - Developer Tools** (or press F12 or CTRL-SHIFT-I)
3. Select the **Network** tab.
4. Ensure that Google Chrome is recording. A red button indicates that a recording is already in progress. Otherwise, click **Record network log**.
5. Select **Preserve Log**.
6. Clear any existing logs by clicking **Clear network log** (![](https://help.okta.com/oag/en-us/content/resources/images/access-gateway/troubleshooting-with-har-chrome-04.png)).
7. Go to the page where the issue occurred and reproduce the issue.
8. Click **Export HAR** (the down arrow icon) to export the file as HAR.
9. Save the HAR file.

![HAR file analysis for web application diagnostics. This image visually represents the structure of a HAR file, which is used for debugging web performance issues. Learn how to use HAR files to diagnose and troubleshoot your web applications effectively. More information available at Agilicus.](https://www.agilicus.com/www/43d4badd-image-1024x399.png)    ### Firefox

- To open the developer console in Firefox, click on the Firefox Menu in the upper-right-hand corner of the browser and select More Tools > Browser Console. You can also use Option + ⌘ + E (on macOS) or Shift + CTRL + C (on Windows/Linux).
- Refresh the page.
- Go to the **Network tab** and, click the settings icon (upper right side of the panel), choose **Save All As Har**.

![HAR file analysis: Diagnose web application performance issues with HTTP Archive (HAR) files. Learn to record, analyze, and troubleshoot web application behavior using HAR files for faster, more efficient debugging.](https://www.agilicus.com/www/7f242f84-image-1024x640.png)    ### Apple Safari

Ensure the ”Show Develop menu” in the menu bar is checked under Safari > Settings > Advanced tab.

- Visit the web page from where you want to export the traffic.
- Click **Develop** on the *Menubar*, then select **Show Web Inspector**. Refresh the page.
- Go to the **Network tab** and click **Export** on the upper right side of the pane.

![HAR file analysis in browser developer tools showing waterfall chart of network requests for diagnosing web application performance issues. Learn how to use HAR files for web application troubleshooting.](https://www.agilicus.com/www/aaae3717-image-1024x640.png)