HAR AnalyzerLocal
Security & Legal DisclaimersLast Updated: September 17, 2026

Security & Technical Disclaimer

Important disclosures regarding sensitive data contained within HTTP Archive (.har) files, automated performance audit limitations, and third-party trademarks.

Critical Security Notice: HAR Files Contain Secrets

When you export a HAR file from browser Developer Tools (such as Chrome DevTools, Firefox Network Monitor, or Safari Web Inspector), the resulting JSON archive captures unencrypted HTTP request headers, query strings, post data payloads, session cookies, and authentication tokens (e.g., Bearer tokens, OAuth access tokens, API secret keys). Never share raw HAR files publicly or with untrusted parties without sanitizing them first.

1. Client-Side Processing Architecture

HAR File Analyzer operates entirely within your local web browser environment via client-side JavaScript APIs (including the HTML5 FileReader and URL interfaces).

Zero Server Transmission: We do not receive, process, transmit, cache, or store your HAR files on any web server, database, or external cloud infrastructure. While this architecture provides substantial privacy protection against server-side data compromises, you remain responsible for the physical and digital security of your own device, browser extensions, and operating system.

2. Redaction and Sanitization Feature Disclaimer

The built-in "Sanitize & Redact HAR" tool is provided as a programmatic helper designed to identify and mask standard header names (e.g., Authorization, Proxy-Authorization, Cookie, Set-Cookie) and common credential patterns.

Important Note: Redaction algorithms cannot guarantee detection of bespoke, custom, or proprietary authorization headers, obfuscated token names, or sensitive user data embedded inside unformatted binary post data bodies, XML payloads, or custom JSON keys. Always manually verify the contents of sanitized files before disclosing them to third parties.

3. Automated Audits and Diagnostic Insights

The automated audit engine in HAR File Analyzer provides heuristic recommendations regarding network performance, Time to First Byte (TTFB), asset compression, cookie security attributes (such as Secure, HttpOnly, and SameSite), and duplicate requests.

  • These insights are generated algorithmically for diagnostic and educational guidance only.
  • Audit warnings do not constitute formal cybersecurity audits, compliance certifications, or certified penetration test reports.
  • We make no guarantees that implementing recommendations will result in specific performance scores, core web vital enhancements, or system hardening.

4. Third-Party Trademarks & Affiliation Notice

All product names, logos, brands, trademarks, and registered trademarks mentioned on this website belong to their respective holders:

  • Google, Google Chrome, and Google HAR Analyzer are trademarks or registered trademarks of Google LLC.
  • Mozilla and Firefox are trademarks or registered trademarks of the Mozilla Foundation.
  • Apple, Safari, and macOS are trademarks or registered trademarks of Apple Inc.
  • Microsoft and Microsoft Edge are trademarks or registered trademarks of Microsoft Corporation.
  • W3C is a trademark of the World Wide Web Consortium.

The use of these names, logos, and brands does not imply endorsement, affiliation, or sponsorship. HAR File Analyzer is an independent developer utility developed to support standard W3C HTTP Archive 1.2 files.

5. Limitation of Liability

In no event shall HAR File Analyzer or its developers be held liable for any damages, security incidents, unintended disclosures, service disruptions, or loss of profits arising from the use of this website, reliance on its diagnostic information, or the processing of network logs.

6. Inquiries

If you have questions regarding this technical disclaimer or wish to report a security question, please reach out to:

Security & Disclosure Contact
[email protected]
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