# LoadMagic.ai HAR Transaction Marker

> Firefox sidebar utility for bracketing HAR recordings with start/end transaction markers and DCAI headers.

Canonical page: [https://chrome-stats.com/d/har-transaction-marker](https://chrome-stats.com/d/har-transaction-marker)

## Overview

- **ID:** `har-transaction-marker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** David Campbell
- **Category:** web-development
- **Daily users:** 2
- **Version:** 0.1.0
- **Last updated:** 2026-01-18
- **First published:** 2026-01-15
- **Size:** 437 KB
- **Data as of:** 2026-09-12
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/har-transaction-marker/)
- **Website:** [https://github.com/loadmagic/support/issues](https://github.com/loadmagic/support/issues)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/har-transaction-marker/privacy/](https://addons.mozilla.org/firefox/addon/har-transaction-marker/privacy/)

## Description

Free addon to save transaction markers to JSON file which can later be used with a HAR file to set wrappers around desired transactions in a user flow.  

Anyone who wants to capture timings as they perform actions in a browser could find this useful.

Usage:
1. type transaction name
2. hit return
3. record user flow (HAR file via F12 dev mode)
4. hit end to mark end of transaction
5. repeat as required
6. save json file via "Download marker timeline" button

## Rankings

- #68,408 — Overall
- #34 — marker

## Permissions and access

### Permissions

- `tabs`
- `storage`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/har-transaction-marker)