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Free Plugin by Ralf Weber v4.2.0

CryptX

No more SPAM by spiders scanning your site for email addresses!

CryptX

The facts

Rating
4.4★ from 19
Active installs
10k+
Price
Free
Last updated
20 Aug 2026
Added
Oct 2007
Requires WP
6.7
Tested up to
WP 7.1
Requires PHP
8.1
Downloads
296,663

Our analysis

AI-assisted

CryptX is a WordPress plugin designed to protect email addresses from spam bots by encrypting them. It automatically detects email addresses in your content and offers various encryption methods, ensuring they remain functional for visitors while being hidden from automated scanners.

This plugin is suitable for website owners who want to safeguard their email addresses from spam without compromising accessibility for their users. It includes features like per-post control, widget support, and options for RSS feed encryption.

Best for: Website owners looking to protect their email addresses from spam bots.

What it does well

  • Automatically detects and encrypts email addresses
  • Multiple encryption methods available
  • Supports text widgets and custom text options
  • Allows per-post control for encryption
  • Includes a false-positive list to avoid misidentification

Where it falls short

  • No information on user support or documentation
  • Limited details on compatibility with other plugins or themes

Verdict

CryptX offers a straightforward solution for email address protection on WordPress sites. It is particularly useful for those concerned about spam while maintaining user accessibility.

From the developer

Ralf Weber's own description of CryptX, lightly tidied.

No more SPAM by spiders scanning your site for email addresses. With CryptX you can hide all your email addresses, with and without a mailto-link, by converting them using javascript or UNICODE.

CryptX protects your email addresses from spambots while keeping them readable and functional for your visitors. The plugin automatically detects email addresses in your content and encrypts them using various methods including JavaScript encryption, Unicode conversion, and image replacement.

Key Features:

  • Automatic Email Detection – Finds and encrypts email addresses in posts, pages, comments, and widgets
  • Multiple Encryption Methods – JavaScript, Unicode, image replacement, and custom text options
  • Widget Support – Works with text widgets and other widget content
  • RSS Feed Control – Option to disable encryption in RSS feeds
  • False-Positive List – Endings such as jpeg or png that keep file names like logo@2x.png from being read as addresses
  • Exempt Addresses – Leave a single address, or a whole domain, exactly as written
  • Per-Post Control – Enable/disable encryption on individual posts and pages
  • Editor Block – “Protected email address”, with fields for link text, subject, cc and bcc
  • WP-CLIwp cryptx settings and wp cryptx scan, both per site on a network
  • Multisite – every site keeps its own settings; a network default decides what a new one starts with
  • Shortcode Support – Use [cryptx]email@example.com[/cryptx] for manual encryption
  • Site Health Check – Reports whether your addresses really are hidden, measured rather than described
  • Template Functions – Developer-friendly functions for theme integration

Plugin Homepage

Development

The settings screen is built with React and the WordPress component library. The
human-readable source ships with the plugin, so the compiled files can be
rebuilt and compared:

  1. cd into the plugin directory
  2. npm install
  3. npm run build

That reproduces build/index.js, build/index.css, build/index-rtl.css and
build/index.asset.php byte for byte from src/. The toolchain is
@wordpress/scripts; package.json and package-lock.json are included so the
exact dependency versions are pinned.

The front end script js/cryptx.min.js is produced from js/cryptx.js with
terser@5.50.0 -c -m.

js/admin-notice.js has no build step at all. It is twenty lines, it runs only

in the admin, and it ships exactly as written.

Read the full description on the official page →

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