HAR File Viewer
This feature is currently under construction.
A full-featured HAR (HTTP Archive) viewer is a complex tool. We are working to bring this functionality to you soon. Please check back later!
This tool is currently being built. Once available, you will be able to:
- Upload your HAR file: Drag and drop your .har file or use the file picker.
- Analyze Network Requests: View a detailed waterfall chart of all HTTP requests, including timings, headers, and content.
- Filter and Search: Quickly find specific requests to diagnose performance issues or inspect payloads.
help_outlineHow to Use the Free Online HAR Viewer
Upload your HAR file: Drag and drop your .har file or use the file picker.
Analyze Network Requests: View a detailed waterfall chart of all HTTP requests, including timings, headers, and content.
Filter and Search: Quickly find specific requests to diagnose performance issues or inspect payloads.
Frequently Asked Questions
What is a HAR file?
A HAR (HTTP Archive) file is a JSON-formatted log of a web browser's interaction with a site. It contains detailed information on every network request and response, making it an essential tool for developers to analyze webpage performance and troubleshoot network issues.
How do I generate a HAR file?
You can generate a HAR file using the developer tools in most modern browsers (like Chrome, Firefox, Edge). Typically, you open the 'Network' tab, record the network activity while you load or interact with a webpage, and then right-click to 'Save all as HAR with content'.
Will this online HAR viewer be free?
Yes, when this tool is launched, it will be completely free to use online for all developers and performance analysts.
About the HAR File Viewer
What is the HAR File Viewer?
Our HAR File Viewer is a free online tool designed to help developers, QA engineers, and website performance analysts quickly and easily view and analyze HTTP Archive (HAR) files. HAR files are essentially recordings of your web browser's interaction with a website, capturing all the requests and responses exchanged. Think of it as a detailed log of every resource loaded, from HTML and CSS to JavaScript, images, and API calls. This information is crucial for debugging website performance issues, identifying bottlenecks, and understanding the complete lifecycle of a web page load. Our tool allows you to inspect these HAR files without needing to download any software or compromise your system's security. You can analyze various aspects like request headers, response codes, timings, and content, helping you pinpoint slow-loading resources, identify error responses, and optimize your website for speed and efficiency. It supports HAR files generated by Chrome DevTools, Firefox Developer Tools, Safari Web Inspector, and other tools that adhere to the HAR specification.
How Does It Work?
Using our HAR File Viewer is incredibly simple and fast. No installation is required! Just drag and drop your HAR file directly into the designated area on this page, or use the file selection button to upload it. Our tool instantly processes the HAR file within your browser - no data is sent to our servers. Once processed, the HAR file's contents are displayed in an organized and easily navigable format. You can quickly filter requests by URL, status code, content type, or timing, allowing you to focus on the specific areas of interest. The interface provides detailed information for each request, including headers, body, timing information (DNS lookup, TCP connection, request sent, waiting for response, content download), and any errors encountered. It's a streamlined and efficient way to delve into the inner workings of your website's performance.
Key Benefits of Using Our Online Tool
- Instant Analysis: Quickly upload and analyze HAR files without any software installation or complex configuration. Get immediate insights into website performance bottlenecks.
- Enhanced Debugging: Identify slow-loading resources, HTTP errors, and other performance issues that impact user experience. Pinpoint the root cause of website problems faster.
- Improved Website Optimization: Optimize your website's loading speed by analyzing resource timings, identifying unnecessary requests, and optimizing content delivery.
- Free and Accessible: Our online HAR File Viewer is completely free to use, making it accessible to developers and website owners of all sizes.
Is it Legal and Safe?
Absolutely! Our HAR File Viewer operates entirely within your web browser. This means that your HAR file data is processed locally on your computer and never transmitted to our servers. We do not store, collect, or analyze your data in any way. This ensures complete privacy and security. Since the processing occurs client-side, it also complies with data privacy regulations. You can confidently use our tool to analyze sensitive website traffic data without worrying about data breaches or privacy violations. The entire process is legal and safe, giving you peace of mind while you optimize your website's performance.
Why Choose Our HAR File Viewer?
Lightning Fast
Instant results — no waiting, no queues, no page reloads.
Works on All Devices
Phone, tablet, or desktop — same smooth experience everywhere.
High Quality Output
No watermarks, no artificial limits. Pure, accurate results every time.
100% Secure & Private
No login required. Files processed in-browser — never sent to our servers.