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How to Extract Cookies from Your Browser
To analyze your website's cookies, you need to extract them from your browser's Developer Tools. Here's how to do it in each major browser:
Google Chrome
- Right-click anywhere on the page and select Inspect (or press
Ctrl+Shift+I/Cmd+Option+I) - Click the Application tab at the top of DevTools
- In the left sidebar under Storage, expand Cookies
- Click on your domain to see all cookies
- Right-click a cookie and select Copy to copy its value, or view the full cookie string in the Network tab under request headers
Mozilla Firefox
- Right-click and select Inspect (or press
F12) - Click the Storage tab at the top
- Expand Cookies in the left sidebar
- Click your domain to view all cookies with their attributes
- Double-click any field to copy its value
Microsoft Edge
- Press
F12orCtrl+Shift+Ito open DevTools - Navigate to the Application tab
- Under Storage, expand Cookies
- Select your domain to view cookies
- Double-click fields to edit, or use the filter box to search
Safari (macOS)
- First enable the Develop menu: Safari → Settings → Advanced → Show Develop menu
- Press
Cmd+Option+Ito open Web Inspector - Click the Storage tab
- Select Cookies in the sidebar
- View all cookies for the current page
Getting the Full Cookie String for Analysis
To analyze cookies with this tool, you need the full cookie string including all attributes. Here's how to get it:
Method 1: From Set-Cookie Response Headers
- Open DevTools and go to the Network tab
- Refresh the page to capture requests
- Click on any request (especially the initial page load)
- Look at Response Headers for
Set-Cookieheaders - Copy the full header value including all attributes
Set-Cookie: sessionid=abc123; Secure; HttpOnly; Path=/; SameSite=Lax; Max-Age=3600Method 2: From JavaScript Console
Note: This only shows cookies without HttpOnly flag (JavaScript-accessible cookies):
document.cookieThis returns cookies in the format: name1=value1; name2=value2
Cookie Security Best Practices
Properly configured cookies are essential for web application security and user privacy.
Security Flags
- • Secure: Only send over HTTPS connections, protecting against man-in-the-middle attacks
- • HttpOnly: Block JavaScript access, preventing XSS-based session theft
- • SameSite: Control cross-site requests to prevent CSRF attacks
- • Domain: Limit cookie scope to specific domains
- • Path: Restrict to specific URL paths
Privacy Considerations
- • Use minimal necessary data in cookie values
- • Set appropriate expiration times (shorter is better)
- • Comply with GDPR/CCPA requirements
- • Provide clear cookie policies and consent
- • Allow users to opt out of tracking cookies
Understanding SameSite Attribute Values
| Value | Behavior | Use Case |
|---|---|---|
| Strict | Cookie only sent in first-party context. Never sent with cross-site requests. | Banking, admin panels, high-security applications |
| Lax | Cookie sent with top-level navigations and GET requests from external sites. | Most web applications (recommended default) |
| None | Cookie sent with all requests. Requires Secure flag. | Embedded content, third-party integrations |
Common Cookie Vulnerabilities
Missing HttpOnly Flag
Session cookies without HttpOnly can be stolen via XSS attacks. Always set HttpOnly on authentication cookies.
Missing Secure Flag
Cookies without Secure flag can be intercepted on unencrypted connections. Always use Secure on HTTPS sites.
SameSite=None Without Secure
Modern browsers reject SameSite=None cookies without the Secure flag. Always pair them together.
Excessive Cookie Lifetime
Long-lived session cookies increase the window for session hijacking. Use appropriate expiration times.
Learn More About Cookie Security
Fixing Insecure Cookies
Step-by-step remediation guide with framework-specific examples
Cookie Prefixes Explained
Learn about __Secure- and __Host- prefixes for extra protection
Extracting Cookies for Analysis
Complete guide to viewing and exporting browser cookies
Security Assessment Services
Professional web application security auditing
Frequently Asked Questions
Common questions about the Cookie Analyzer
HTTP cookies are small pieces of data stored in your browser by websites you visit. They are used for session management, personalization, and tracking. Cookies can contain sensitive information and have security implications if not properly configured. Learn more in our guide: What Are HTTP Cookies and Why Do Websites Use Them?
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⚠️ Security Notice
This tool is provided for educational and authorized security testing purposes only. Always ensure you have proper authorization before testing any systems or networks you do not own. Unauthorized access or security testing may be illegal in your jurisdiction. All processing happens client-side in your browser - no data is sent to our servers.