reCaptcha by BestWebSoft的作者是BestWebSoft,目前有200,000+个有效安装。已经Tested with 5.4.1版本的wordpress。
reCaptcha plugin is an effective security solution that protects your WordPress website forms from spam entries while letting real people pass through with ease. It can be used for login, registration, password recovery, comments, popular contact forms, and other. reCAPTCHA Version 3, Version 2, Invisible are included.
Users are required to confirm that they are not a robot before the form can be submitted. It’s easy for people and hard for bots.
View Demo

Free Features

Add reCaptcha to:

Registration form
Login form
Reset password form
Comments form
Contact Form
Custom form

Hide reCaptcha for the whitelisted IP addresses
Disable the submit button
Validity check of keys in admin panel
Available reCaptcha themes for:

Version 1

Red (default)

Version 2

Light (default)

Compatible with Limit Attempts
Hide reCaptcha in your forms for certain user roles
Hide reCaptcha Badge (Invisible and V3)
Supports reCaptcha:

Version 2
Version 3
Invisible reCAPTCHA

Add custom code via plugin settings page
Compatible with latest WordPress version
Incredibly simple settings for fast setup without modifying code
Detailed step-by-step documentation and videos
Multilingual and RTL ready

Pro Features
All features from Free version included plus:

Compatible with:

Contact Form 7 (since v 3.4)
Jetpack contact form
Fast Secure Contact Form
MailChimp for WordPress
Ninja Forms

Compatible with WooCommerce:

Login form
Register form
Lost password form
Checkout billing form

Compatible with Divi:

Divi Builder Contact form
Divi Builder Login form
Divi Theme Contact form

Compatible with bbPress:

New Topic form
Reply form

Compatible with BuddyPress:

Registration form
Comments form
Create a Group form

Compatible with Forums – wpForo:

Login form
Registration form
New Topic form
Reply form

Select reCaptcha language manually
Change size: normal or compact (for version 2)
Configure all subsites on the network
Get answer to your support question within one business day (Support Policy)

Upgrade to Pro Now

If you have a feature suggestion or idea you’d like to see in the plugin, we’d love to hear about it! Suggest a Feature
Documentation & Videos

[Doc] Installation
[Doc] Purchase
[Doc] User Guide
[Video] Installation Instruction
[Video] Purchase, Installation & Configuration

Help & Support
Visit our Help Center if you have any questions, our friendly Support Team is happy to help –

Czech (cs_CZ) (thanks to Michal Kučera,, PaMaDeSSoft,
Romanian (ro_RO)
Russian (ru_RU)
Spanish (es_ES)
Ukrainian (uk)

Some of these translations are not complete. We are constantly adding new features which should be translated. If you would like to create your own language pack or update the existing one, you can send the text of PO and MO files to BestWebSoft and we’ll add it to the plugin. You can download the latest version of the program for work with PO and MO files Poedit.
Recommended Plugins

Updater – Automatically check and update WordPress website core with all installed plugins and themes to the latest versions.
Contact Form – Simple contact form plugin any WordPress website must have.
Subscriber – Add email newsletter sign up form to WordPress posts, pages and widgets. Collect data and subscribe your users.
Multilanguage – Translate WordPress website content to other languages manually. Create multilingual pages, posts, widgets, menus, etc.


lib/recaptchalib.php – Copyright © 2007. Mike Crawford, Ben Maurer (reCAPTCHA – All Rights Reserved.