Title: 2IZI SmartCaptcha for Yandex Author: 2izi Published: August 26, 2026 Last modified: August 26, 2026 --- Search plugins ![](https://ps.w.org/2izi-smartcaptcha/assets/banner-772x250.png?rev=3667058) ![](https://ps.w.org/2izi-smartcaptcha/assets/icon-256x256.png?rev=3667058) # 2IZI SmartCaptcha for Yandex By [2izi](https://profiles.wordpress.org/2izi/) [Download](https://downloads.wordpress.org/plugin/2izi-smartcaptcha.1.0.12.zip) * [Details](https://wordpress.org/plugins/2izi-smartcaptcha/#description) * [Reviews](https://wordpress.org/plugins/2izi-smartcaptcha/#reviews) * [Installation](https://wordpress.org/plugins/2izi-smartcaptcha/#installation) * [Development](https://wordpress.org/plugins/2izi-smartcaptcha/#developers) [Support](https://wordpress.org/support/plugin/2izi-smartcaptcha/) ## Description 2IZI SmartCaptcha for Yandex adds server-validated Yandex SmartCaptcha protection to common WordPress forms. Developed and maintained by 2IZI. Project page: https:// 2izi.ru/en/projects/smartcaptcha Features: * WordPress login, registration and lost-password protection. * Optional WordPress comments protection. * WooCommerce login, registration and lost-password protection. * Optional WooCommerce classic checkout and product-review protection.* Optional Contact Form 7 integration. * Server-side token verification. * Per-form enable/disable switches. * Configurable fail-closed behavior. * Translation-ready using the standard WordPress.org translation system. * Runtime translations are distributed through translate.wordpress.org language packs. #### External service This plugin relies on Yandex SmartCaptcha, a third-party service operated through Yandex Cloud. The SmartCaptcha JavaScript is loaded from `https://smartcaptcha.cloud. yandex.ru/captcha.js` on pages where a protected CAPTCHA widget is rendered. When a protected form is submitted, the CAPTCHA token and, when available, the visitor IP address are sent server-side to `https://smartcaptcha.cloud.yandex.ru/validate` together with the site owner’s private server key to verify the request. A Yandex Cloud account and a configured SmartCaptcha are required. Review the service documentation and applicable legal terms before enabling the plugin: * Service documentation: https://yandex.cloud/en/docs/smartcaptcha/ * Yandex Cloud Terms of Use: https://yandex.com/legal/cloud_terms_smartcaptcha/ * Yandex Privacy Policy: https://yandex.com/legal/confidential/ ## Installation 1. Upload the plugin ZIP in Plugins > Add New > Upload Plugin, or install it from WordPress.org when available. 2. Activate the plugin. 3. Create a SmartCaptcha in Yandex Cloud: https://yandex.cloud/en/services/smartcaptcha 4. Copy its Client key and Server key. Key instructions: https://yandex.cloud/en/docs/ smartcaptcha/operations/get-keys 5. Open Settings > 2IZI SmartCaptcha. 6. Save both keys and enable the forms you want to protect. WooCommerce checkout protection currently targets the classic checkout flow; test it before production use. 7. Test login and other protected flows in a separate browser/private window before logging out of the administrator session. ## FAQ ### Is this an official Yandex plugin? No. This is an independent plugin by 2IZI that integrates with the Yandex SmartCaptcha service. ### Does the server key appear in page HTML? No. The server key is used only in server-side verification requests. The client key is public and is included in the widget markup as required by SmartCaptcha. ### What happens if Yandex SmartCaptcha cannot be reached? By default, protected submissions are blocked (fail closed). Administrators can change this behavior in settings, but fail-closed mode is recommended for security- sensitive forms. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “2IZI SmartCaptcha for Yandex” is open source software. The following people have contributed to this plugin. Contributors * [ 2izi ](https://profiles.wordpress.org/2izi/) “2IZI SmartCaptcha for Yandex” has been translated into 1 locale. Thank you to [the translators](https://translate.wordpress.org/projects/wp-plugins/2izi-smartcaptcha/contributors) for their contributions. [Translate “2IZI SmartCaptcha for Yandex” into your language.](https://translate.wordpress.org/projects/wp-plugins/2izi-smartcaptcha) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/2izi-smartcaptcha/), check out the [SVN repository](https://plugins.svn.wordpress.org/2izi-smartcaptcha/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/2izi-smartcaptcha/) by [RSS](https://plugins.trac.wordpress.org/log/2izi-smartcaptcha/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.0.12 * Added direct links in plugin settings to create Yandex SmartCaptcha and obtain Client/Server keys. * Added locale-aware Yandex Cloud links for Russian and other WordPress admin locales. * Removed Russian text from the source English readme so translations are handled through translate.wordpress.org. #### 1.0.11 * Strengthened plugin-specific prefixes for PHP declarations, stored options, script handles and JavaScript globals. * Updated the Yandex SmartCaptcha terms URL. * Removed bundled runtime translation files in preparation for WordPress.org language packs. #### 1.0.10 * Added the dedicated 2IZI SmartCaptcha project page as the Plugin URI. * Added locale-aware project links in plugin settings for Russian, English, Japanese, Chinese and Italian. #### 1.0.9 * Removed the Plugin URI header to keep it distinct from the 2IZI Author URI for WordPress.org submission. #### 1.0.8 * Prepared for WordPress.org Plugin Check: removed the unnecessary manual text- domain loader. * Documented intentional CAPTCHA token POST handling for host forms. * Added an explicit version to the Yandex SmartCaptcha script enqueue. #### 1.0.6 * Fixed the Russian translation of the live SmartCaptcha preview description in plugin settings. * Synchronized plugin version metadata for the WordPress.org submission build. #### 1.0.5 * Added a small, non-promotional developer information block to the plugin settings page. * Added consistent 2IZI developer attribution and website information without changing CAPTCHA behavior. * Prepared the package as a release candidate for WordPress.org submission. #### 1.0.4 * Fixed automatic SmartCaptcha language detection. * SmartCaptcha now follows the current WordPress request locale, including the language selector on wp-login.php. * Manual SmartCaptcha language selection still overrides automatic detection. * Unsupported WordPress locales fall back to English for the SmartCaptcha widget. #### 1.0.3 * Replaced the separate connection-test button with an automatic live SmartCaptcha preview after the Client and Server keys are saved. * The settings preview uses the real Yandex SmartCaptcha widget and the saved widget language. #### 1.0.2 * Improved SmartCaptcha placement and spacing on WordPress forms. * Added responsive frontend styles for narrow and mobile layouts. * Submit controls are disabled until SmartCaptcha returns a valid token. * Submit controls are disabled again when the token expires or the widget reports an error. * Added accessible, localized frontend status messages. * Switched the frontend widget integration to the documented advanced SmartCaptcha API for reliable event handling. #### 1.0.1 * Rebuilt the settings page to use native WordPress admin UI patterns. * Added full Russian translation and standard WordPress gettext localization support. * The plugin interface now follows the WordPress admin locale. * Improved localized connection-test messages and mobile settings layout. #### 1.0.0 * Initial release. * WordPress core forms protection. * WooCommerce integration. * Contact Form 7 integration. * Server-side Yandex SmartCaptcha validation. * Privacy-policy suggestion and external-service disclosure. ## Meta * Version **1.0.12** * Last updated **1 week ago** * Active installations **Fewer than 10** * WordPress version ** 6.4 or higher ** * Tested up to **7.1** * PHP version ** 7.4 or higher ** * Languages * [English (US)](https://wordpress.org/plugins/2izi-smartcaptcha/) and [Russian](https://ru.wordpress.org/plugins/2izi-smartcaptcha/). * [Translate into your language](https://translate.wordpress.org/projects/wp-plugins/2izi-smartcaptcha) * Tags * [captcha](https://wordpress.org/plugins/tags/captcha/)[security](https://wordpress.org/plugins/tags/security/) [spam protection](https://wordpress.org/plugins/tags/spam-protection/)[yandex](https://wordpress.org/plugins/tags/yandex/) * [Advanced View](https://wordpress.org/plugins/2izi-smartcaptcha/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/2izi-smartcaptcha/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/2izi-smartcaptcha/reviews/) ## Contributors * [ 2izi ](https://profiles.wordpress.org/2izi/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/2izi-smartcaptcha/)