A privacy-focused Microsoft Edge extension that exports cookies from the current website to a text file in the Netscape standard format for compatibility with standard tools like cURL.
This extension:
- Does NOT send any data to external servers
- Does NOT store cookies permanently
- Does NOT harvest bank account information, passwords, SSNs, or kidneys
- Only reads cookies from the current website when you click "Export"
- All processing is done locally in your browser
- Open Microsoft Edge
- Navigate to
edge://extensions/ - Enable "Developer mode" (toggle in the bottom-left corner)
- Click "Load unpacked"
- Select the
ext-DownloadCookieFilefolder - The extension should now appear in your extensions list
- Navigate to any website in your browser
- Click the Cookie Exporter extension icon in the toolbar
- The popup will show:
- Current website domain
- Number of cookies found
- Click "Export Cookies" button
- Choose where to save the file (or it will save to your default Downloads folder)
- The cookies will be exported to a text file named
cookies_[domain].txt
The exported cookies are saved in Netscape HTTP Cookie File format, the industry-standard format compatible with most HTTP tools and applications such as cURL.
The file uses a tab-separated format with 7 fields per cookie:
- Domain - The domain that can read the cookie
- Flag - TRUE if domain begins with a dot (subdomain wildcard), FALSE otherwise
- Path - The path within the domain that the cookie is valid for
- Secure - TRUE if connection must be secure (HTTPS), FALSE otherwise
- Expiration - Unix timestamp of expiration (or 0 for session cookies)
- Name - The cookie name
- Value - The cookie value
# Netscape HTTP Cookie File
# https://curl.se/docs/http-cookies.html
# This file was generated by Cookie Exporter extension
# Edit at your own risk.
.example.com TRUE / FALSE 1734451200 session_id abc123xyz
example.com FALSE /api TRUE 1734451200 auth_token def456uvw
This format is supported by:
- curl - Use with
--cookie cookies.txtor-b cookies.txt - wget - Use with
--load-cookies=cookies.txt - yt-dlp - Use with
--cookies cookies.txt - aria2 - Use with
--load-cookies=cookies.txt - HTTPie - Convert or use with session management
- Most HTTP libraries and browser automation tools
Using with curl:
curl -b cookies_example.com.txt https://example.com/api/dataUsing with wget:
wget --load-cookies=cookies_example.com.txt https://example.com/file.zipUsing with PowerShell:
# Parse the Netscape cookie file and create a WebRequestSession
$session = New-Object Microsoft.PowerShell.Commands.WebRequestSession
Get-Content cookies_example.com.txt | Where-Object { $_ -notmatch '^#' -and $_ -match '\S' } | ForEach-Object {
$fields = $_ -split "`t"
$cookie = New-Object System.Net.Cookie
$cookie.Name = $fields[5]
$cookie.Value = $fields[6]
$cookie.Domain = $fields[0]
$cookie.Path = $fields[2]
$session.Cookies.Add($cookie)
}
# Example with Invoke-WebRequest
Invoke-WebRequest -Uri "https://example.com/api/data" -WebSession $session
# Example with Invoke-RestMethod
Invoke-RestMethod -Uri "https://example.com/api/data" -WebSession $sessionThe extension requires the following permissions:
- cookies: To read cookie data from websites
- activeTab: To get the current tab's URL and domain
- downloads: To save the exported cookie file
- host_permissions (
<all_urls>): To access cookies from any website
Designed for Microsoft Edge but should be usable accross any Chromium based browser with Manifest v3 extension support (Chrome, Brave, Vivaldi, etc.)
No cookies found:
- Some websites don't set cookies
- Cookies might be set on a different subdomain
- Try refreshing the page before exporting
Download not working:
- Check that the extension has the "downloads" permission
- Ensure you're not in a restricted page (edge:// or chrome:// URLs)
Extension not loading:
- Verify all files are present, especially manifest.json
- Check that icons are generated and placed in the icons folder
- Look for errors in
edge://extensions/with Developer mode enabled
Licensed under the MIT license. See LICENSE for details.
Due to code safety concerns and the potential for abuse, pull requests are unlikely to be merged. There are dozens of cookie exporters out there, but I made this one for myself because I don't trust any of them. Cookies are sacred keys to your digital life.
Extension logo by Icons8.