How to Record and Download a HAR File

When do you need a HAR file?

A HAR (HTTP Archive) file is a recording of every network request your browser makes while you use a page. When you report a bug that only shows up in the browser — a page not loading, a button doing nothing, data displaying incorrectly — the support and engineering teams often need a HAR file to see exactly what the browser asked for and what it got back. Attaching a HAR to your ticket dramatically shortens the debug time.

This guide walks through recording a HAR in Google Chrome in about 60 seconds.

Quick summary

1. Open Chrome DevTools (F12 or right-click → Inspect).

2. Click the Network tab.

3. Make sure the record dot (●) is red: Chrome is now recording.

4. Reproduce the bug in the same tab.

5. Right-click any row in the Network panel → Save all as HAR with content.

6. Attach the downloaded .har file to your support ticket.

Full walkthrough

Step 1: Open Chrome DevTools

On the page where the bug happens, right-click anywhere and choose Inspect. Or just press F12 (Windows/Linux) / Cmd + Option + I (macOS).

Step 2: Click the Network tab

At the top of the DevTools panel, click Network. This is where every request the page makes will be logged.

Step 3: Confirm recording is ON, then reproduce the bug

The round dot at the top-left of the Network panel should be red (●): that means recording is active. If it's grey, click it once to start.

Now do the exact thing that triggers the bug: click the broken button, submit the form, load the page that fails, etc. You'll see requests appear in the list as they happen.

Step 4: Save as HAR

Once you've reproduced the bug, right-click any row in the Network list and choose Save all as HAR with content. Chrome will download a .har file to your Downloads folder.

Step 5: Attach the .har file to your ticket

Open your support ticket (or your reply email) and attach the .har file. That's it: the engineering team can now replay exactly what your browser saw.

Full 5-step walkthrough (animated, 5 seconds)

Tips and gotchas

• The HAR contains real data. Any cookies, auth tokens, form values, or personal info that were part of the requests are inside the file. Don't post HAR files publicly — attach them to your Jira ticket where access is controlled.

• Reproduce the bug AFTER DevTools is open. Requests that happened before you opened DevTools are not captured.

• Use "Preserve log" if the bug involves a page redirect or reload. Without it, the log clears on navigation.

• HAR files can be big (several MB is normal). If your ticket system rejects the upload, zip the file first.

• Firefox and Edge have the same feature: same shortcut (F12), same Network tab, same "Save All As HAR" right-click option.

Need help?

If any step above is confusing or the file won't download, ping the Customer Support Engineering team in Slack — we'll walk you through it live.