Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Encryption Tool

Encryption Tool by Ray

Encrypt and decrypt textual data using SHA-256 Hash algorithm

4.4 (7 reviews)4.4 (7 reviews)
113 Users113 Users
You'll need Firefox to use this extension
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
This extension adds a few items to the right-click context menu over text selections. You can:
  1. Encrypt selected text to the clipboard
  2. Encrypt selected text and store it in the synced storage
  3. Encrypt selected text and replace the original content
  4. Decrypt an encrypted text and save it to the clipboard
  5. Decrypt an encrypted text and replace the original content

Notes:
1. The extension uses your passphrase as a newly generated SHA-256 private key and a random public key to encrypt or decrypt the textual content.
2. There is no way to decrypt the encrypted text if the passphrase is forgotten. To protect user privacy the extension does NOT store your passphrases.
3. The extension now supports encryption and decryption of binary files with the same algorithm.

Use cases:
1. Encrypt your passwords while sending an email
2. Archive some important data privately
3. Send important data such as passwords to another machine securely

Privacy:
This extension works offline. There is no data sent to any server whatsoever
Rated 4.4 by 7 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
3
4
4
3
0
2
0
1
0
Read all 7 reviews
Permissions and dataLearn more

Required permissions:

  • Display notifications to you
More information
Add-on Links
  • Homepage
  • Support site
Version
0.2.8
Size
45.82 KB
Last updated
3 days ago (Aug 11, 2025)
Related Categories
  • Privacy & Security
License
Mozilla Public License 2.0
Version History
  • See all versions
Tags
  • anti malware
  • password manager
  • security
  • streaming
Add to collection
Report this add-on
Support this developer

The developer of this extension asks that you help support its continued development by making a small contribution.

Contribute now

Release notes for 0.2.8
  1. Supports binary file encryption and decryption
More extensions by Ray
  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

  • There are no ratings yet

Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.