Clear Firefox cookies

Apply Now

Works with any Linux distroWorks with any Linux distribution that can run bash scripts.

• Single actionThis page belongs to a script, containing basic changes to achieve a task.
• Linux onlyThis script improves your privacy on Linux
• Impact: HighSystem Functionality Loss Risk: High
  This action improves privacy with high impact when you run the recommended script.
• Bash (Shell script)These changes use Linux system commands to update your settings.
• Fully reversible

  You can fully restore this action (revert back to the original behavior) using this website.

  The restore/revert methods provided here can help you fix issues.

Overview

This script deletes Firefox browser cookies to reduce online tracking.

A cookie is a small piece of data stored by websites on your browser. Websites use cookies to remember your preferences and track your browsing activity. While some cookies help websites function properly, others may be used for tracking your online behavior.

Deleting cookies:

• Reduces tracking of your browsing habits
• May improve browser performance by freeing up storage space
• Requires you to sign in again to websites
• May reset some website preferences and settings

Caution

You will be signed out of all websites and need to log in again.

Technical Details

Firefox stores cookies in a SQLite database file named 'cookies.sqlite' in the browser profile folder ¹. This script clears contents of this table.

Not Advised

This script should only be used by advanced users.

This script is not recommended for daily use as it breaks important functionality.

Consider creating a system backup before doing any changes.

Sources

PrivacyLearn.com maintains strict sourcing standards for accuracy, integrity and up-to-date content. Our content relies on authoritative sources including vendor documentation, industry standards, and verified research. Learn more about our verification process and quality standards in our editorial standards page.

• Cookies.sqlite - MozillaZine Knowledge Base. kb.mozillazine.org. (2022).
  Original: https://kb.mozillazine.org/Cookies.sqlite
  Archived: https://web.archive.org/web/20221029140816/https://kb.mozillazine.org/Cookies.sqlite

Apply Now

Choose one of three ways to apply:

Download script

Download and run the script directly

• No app needed
• Offline usage
• Free
• Open-source

Apply protection

Help

How to apply or restore "Clear Firefox cookies" using script

• ≈ 3 min to complete
• Tools: Web Browser
• Difficulty: Medium
• ≈ 5 instructions

1. 1

   Download

   Download the script file by clicking on the   Apply protection  button above.
   Use   Undo protection button above to restore changes.
2. 2

   Keep the file

   If warned by your browser, keep the file.
3. 3

   Open

   Open the downloaded file.
4. 4

   Exit

   Once it's done, press any key to exit the window.
5. 5

   Restart

   Restart your computer for all changes to take effect.

Apply with privacy.sexy

Guided, automated application with safety checks

• Recommended for most users
• Includes safety checks
• Free
• Open-source
• Popular
• Offline/Online usage

Open privacy.sexy

Help

How to apply or restore "Clear Firefox cookies" using privacy.sexy

• ≈ 3 min to complete
• Tools: privacy.sexy
• Difficulty: Simple
• ≈ 4 instructions

privacy.sexy is free and open-source application that lets securely apply this action easily with more advanced options.

1. 1

   Open or download

   Open or download the desktop application
2. 2

   Choose script

   1. Search for the script name: Clear Firefox cookies
   2. Check the script by clicking on the checkbox.
3. 3

   Run

   Click on ▶️ Run button at the bottom of the page.

   This button only appears on desktop version (recommended). On browser, use 💾 Save button.

Run commands

Copy and run commands manually Requires technical knowledge

Apply

Apply changes

# Delete files matching pattern: "~/.mozilla/firefox/*/cookies.sqlite"
if ! command -v 'python3' &> /dev/null; then
  echo 'Skipping because "python3" is not found.'
else
  python3 <<EOF
import glob
import os
path = '~/.mozilla/firefox/*/cookies.sqlite'
expanded_path = os.path.expandvars(os.path.expanduser(path))
print(f'Deleting files matching pattern: {expanded_path}')
paths = glob.glob(expanded_path)
if not paths:
  print('Skipping, no paths found.')
for path in paths:
  if not os.path.isfile(path):
    print(f'Skipping folder: "{path}".')
    continue
  os.remove(path)
  print(f'Successfully delete file: "{path}".')
print(f'Successfully deleted {len(paths)} file(s).')
EOF
fi
# Delete files matching pattern: "~/.var/app/org.mozilla.firefox/.mozilla/firefox/*/cookies.sqlite"
if ! command -v 'python3' &> /dev/null; then
  echo 'Skipping because "python3" is not found.'
else
  python3 <<EOF
import glob
import os
path = '~/.var/app/org.mozilla.firefox/.mozilla/firefox/*/cookies.sqlite'
expanded_path = os.path.expandvars(os.path.expanduser(path))
print(f'Deleting files matching pattern: {expanded_path}')
paths = glob.glob(expanded_path)
if not paths:
  print('Skipping, no paths found.')
for path in paths:
  if not os.path.isfile(path):
    print(f'Skipping folder: "{path}".')
    continue
  os.remove(path)
  print(f'Successfully delete file: "{path}".')
print(f'Successfully deleted {len(paths)} file(s).')
EOF
fi
# Delete files matching pattern: "~/snap/firefox/common/.mozilla/firefox/*/cookies.sqlite"
if ! command -v 'python3' &> /dev/null; then
  echo 'Skipping because "python3" is not found.'
else
  python3 <<EOF
import glob
import os
path = '~/snap/firefox/common/.mozilla/firefox/*/cookies.sqlite'
expanded_path = os.path.expandvars(os.path.expanduser(path))
print(f'Deleting files matching pattern: {expanded_path}')
paths = glob.glob(expanded_path)
if not paths:
  print('Skipping, no paths found.')
for path in paths:
  if not os.path.isfile(path):
    print(f'Skipping folder: "{path}".')
    continue
  os.remove(path)
  print(f'Successfully delete file: "{path}".')
print(f'Successfully deleted {len(paths)} file(s).')
EOF
fi

Revert

Restore changes

IiI=

Help

How to apply or restore "Clear Firefox cookies" using commands

• ≈ 2 min to complete
• Tools: Terminal
• Difficulty: Medium
• ≈ 3 instructions

1. 1

   Open terminal

   Open your terminal application.
2. 2

   Copy code

   Copy the code:

   Copy Apply Code Copy Revert Code
3. 3

   Paste & run

   Paste the commands into terminal application and press Enter to run.

   Some changes require a system restart to take effect

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About the Creators

These people have authored this documentation and written its scripts:

• 

  undergroundwires

  • Certified security professional
  • 7+ years experience securing banks
  • Open-source developer since 2005
  • EU advisor, Public Speaker, Moderator
• Open-Source Contributors

  • Hundreds across the globe
  • Testers, reviewers, developers
  • Companies, military agencies
  • Community since 2017

About Us

Reviewed By

This guide has undergone comprehensive auditing and peer review:

• Expert review by undergroundwires

  • Verified technical accuracy and editorial standards
  • Assessed system impact and user privacy risks
  • Audited and verified using automated security tests

• Public review by large community

  • Privacy enthusiasts and professionals peer-reviewed
  • Millions of end-users tested across different environments
  • Audited and verified using third-party security software

History

We continually monitor our guides, their impact and other potential privacy options. We update our guides when new information becomes available. On every update, we publicly store who made the change, what has been changed, why the change was made and when the change was made.

Review Change History Our Change Process