HAR File Analyzer

Analyze HAR files to understand recorded web requests, responses, and resource loading behavior in a clear and structured way.

HAR Preview

Your uploaded HAR file details will be displayed here.

HAR Analysis Results

Upload a HAR and run analysis. Results will appear here with score, badges, flagged requests, and developer-ready exports.

Analyzing HAR file...

Large HAR files can take longer. Some request bodies may be truncated by the browser exporter.

Web Traffic and Request Analysis

This tool looks at HTTP Archive files to help people understand how websites work when you visit them. It checks the data and details of the requests made by your browser. This tool does not try to figure out why someone is visiting a website or what they are doing. It just looks at what's already recorded in the HTTP Archive file and gives you a clear summary of what it finds.

What This Tool Does

The HTTP Archive File Analyzer helps you look at the contents of these files in a way. It does not watch what you are doing online or track you. It just looks at what's already recorded in the file.

Here are some key things to know:

It checks the requests and responses that were recorded.
It looks at the order and timing of the requests.
It points out any connections to websites.
It checks the details of the requests and responses.

It gives you information about what it finds, and it tells you what it does not know.

How the HAR Analysis Works

Stage 1: Generate a HAR file from your web browser

First you need to make an HTTP Archive file using your web browser. To do this you need to open the developer tools in your browser. You can usually do this by clicking on a webpage and choosing Inspect. You can also use the F12 key or press Ctrl + Shift + I on a Windows or Linux computer or Cmd + Option + I on a Mac.

Then you need to go to the Network tab. This is where your browser records everything that happens on a webpage.

Next you need to turn on network recordings. This is usually shown by an active record icon.

After that you need to reload the page or do the things you want to capture. Your browser will record all the requests, like scripts and images.

Finally, you need to save the HTTP Archive file. You can do this by clicking Save, Export or Copy all as HTTP Archive depending on your browser.

Stage 2: Upload the HAR file

Upload the generated HAR file to the analyzer. Make sure you use the original file, so all the information is kept.

Stage 3: File validation and basic inspection

The system will then check the file to make sure it is correct and get some information from it. If the file is not complete this will be shown in the results.

Stage 4: Request and response review

Then it will look at the requests and responses that were recorded. It will show you the request methods and URLs, the response status codes and the types of resources that were requested.

Stage 5: Header and parameter analysis

After that it will look at the details of the requests and responses like the content types and caching behavior.

Stage 6: Connection and third-party overview

Finally, it will list any websites that were connected to during the session.

Stage 7: Review analysis results

View the summarized output on screen, including request details, loading patterns, and any noted limitations.

Types of Indicators Examined

Request Patterns

The tool looks at a few types of information:

Request patterns, like the order and timing of the requests.
Metadata, which can give you insight into how the requests were handled.
Third-party requests, which are listed to help you see which outside websites were contacted.

Understanding Confidence and Limitations

HAR files only show what was recorded when it was captured. If the file is not complete or was made with tools the results might not be accurate. In real world, request patterns can vary depending on the browser, network and website. The results should be looked at with this in mind.

Responsible Use and Interpretation

This tool is meant to help with understanding and review. It does not try to figure out what a website is doing or how secure it is. Legitimate websites can have request patterns, and the results should not be used to make conclusions.

Privacy and Data Handling

The privacy of users is very important to this system. The HTTP Archive files that are uploaded are only used for analysis. Are not kept or shared. They are automatically deleted after they are processed. You can read the Privacy Policy for more information.

Frequently Asked Questions

What is a HAR file?

A HAR file, short for HTTP Archive, records web requests and responses that occur during page loading or browsing activity. It captures technical information including the timing of a request, URLs, headers, and resource types. HAR files can only be created using a browser developer tool.

What does a HAR file analyzer do?

A HAR file analyzer evaluates the contents of a HAR file and organizes recorded traffic into a readable format. It helps users review requests, responses, headers, and resource loading behavior. The goal is to make complex web traffic data easier to understand.

Can this tool detect tracking or privacy issues?

The tool highlights third-party requests and external connections that appear in the HAR file. These entries are shown for visibility and technical review only. The analyzer does not determine intent or confirm privacy or tracking violations.

Does the HAR File Analyzer monitor live traffic?

No. The HAR File Analyzer works only with files that are manually uploaded by the user. It does not capture, monitor, or observe live browsing activity.

Why do some HAR files show many requests?

In modern web applications, there are likely numerous resources requested, including scripts, images, APIs, and stylesheets. This is normal practice for web applications. A high number of requests does not automatically indicate a problem.

Can legitimate websites generate unusual request patterns?

Yes. The normal functioning of a website, test environments, or content delivery networks can lead to a complex or unexpected request pattern. Such patterns are usually indicative of optimization or infrastructure decisions rather than malicious activity.

Are encrypted requests visible in HAR files?

Encrypted request payloads are usually not readable within a HAR file. In such cases, only surface-level information such as URLs, headers, and timing may be available. This limitation is noted during analysis.

Does the tool store uploaded HAR files?

No. The uploaded HAR files are only processed during the analysis in an active session. The files are not kept in permanent storage, shared with a third party, or used in training.

Can analysis results be used for security audits?

The tool supports technical review of recorded web traffic. Security audits need other tools, further context, and professional analysis. Results should be interpreted accordingly.

Is this tool suitable for learning and debugging?

Yes. This tool is usually used to analyze the behavior of the requests as well as any issues associated with the loading of the page or its performance. It is also useful for learning how modern web traffic works.

Important Notice

This tool is provided for informational and educational purposes. It does not provide legal advice or certify security findings. For formal assessments, professional review is recommended.