Captcha by BestWebSoft – Advanced Spam Protection, Math & OCR-Friendly Captcha for Site Forms vs Kama SpamBlock

Captcha by BestWebSoft is the premier spam protection and security plugin for WordPress, designed to safeguard your website’s forms from spam and malicious submissions. This plugin provides robust protection for login, registration, password recovery, comments, WooCommerce checkout, and custom forms using advanced captcha solutions, including Math captcha and OCR-friendly captcha. Enhance your website’s security and user experience with versatile captcha options that are easy to set up and manage, ensuring uninterrupted protection against spam without the need for code modifications. Choose from Invisible captcha, Character recognition captcha, and Slide captcha to customize your protection strategy. Block bots effectively with powerful math-based challenges or smooth, user-friendly sliding interactions. Captcha by BestWebSoft integrates seamlessly with popular plugins and is optimized for spam protection on WordPress forms, making it ideal for WooCommerce, Contact Form 7, and other integrations. Secure your site today with a lightweight, fast, and reliable solution that prioritizes both security and user experience. Stop spam now with the most effective WordPress captcha solution! View Demo Free Features Add captcha to: Login form Registration form Reset password form Comments form Protected post password form Contact Form Car Rental V2 Pro Custom form Choose Captcha type: Invisible Character Recognition Simple math actions such as addition, subtraction, and multiplication Slide captcha Enhance captcha protection with: Letters Numbers Images Hide captcha for: Registered users in comments form Set captcha submission time limit Settings for displaying captchas by Weekdays and Hours Refresh captcha option Edit captcha title and notifications Compatible with latest WordPress version Incredibly simple settings for fast setup without modifying code Detailed step-by-step documentations and videos Multilingual and RTL ready Force Strong Passwords Pro Features All features from Free version included plus: Compatible with : Contact Form 7 (since v 3.4) Subscriber Jetpack contact form MailChimp for WordPress Ninja Forms Gravity Forms WPForms Caldera Forms Formidable Contact Form MemberPress Compatible with WooCommerce: Login form Register form Lost password form Checkout billing 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 Compatible with Divi : Contact Form Login Form Compatible with LearnDash login: Login form Registration form Compatible with BuddyBoss: Registration form Compatible with Elementor Pro: Elementor Contact form [NEW] Compatible with BWS Login Register Form: Login form Registration form Forgot Password form Compatible with Easy Digital Downloads Form: Login form Registration form Forgot Password form Hide captcha for: Allowed IP addresses Merge IP addresses from Limit Attempts plugin with Captcha Allow List Configure all subsites on the network Captcha submission time limit for separate forms Image packages with hand-drawn digits Add and enable unlimited number of image packages at the same time Edit Slide captcha appearance Block disposable emails Add custom code via plugin settings page Get answer to your support question within one business day (Support Policy) Upgrade to Pro Now If you have feature suggestions or ideas you’d like to see in the plugin, we’d love to hear from you! Suggest a Feature Documentation & Videos [Doc] User Guide [Doc] Installation [Doc] Purchase [Video] Purchase, Installation, Configuration Tutorial [Video] User Guide Help & Support Visit our Help Center if you have any questions; our friendly Support Team is ready to assist you. Affiliate Program Earn a 20% commission by selling premium WordPress plugins and themes by BestWebSoft — Join the Affiliate Program Translation Arabic (ar_AR) (thanks to Albayan Design Hani Aladoli) Bangla (bn_BD) (thanks to SM Mehdi Akram, www.shamokaldarpon.com) Belarusian (bel) (thanks to Natasha Diatko) Brazilian Portuguese (pt_BR) (thanks to Breno Jacinto, www.iconis.org.br) Bulgarian (bg_BG) (thanks to Nick) Catalan (ca) (thanks to Psiete) Chinese (zh_CN) (thanks to TIM, Jack Chen, www.jackchen.im) Taiwan (zh_TW) (thanks to Kaiconan) Croatian (hr) (thanks to Daniel) Czech (cs_CZ) (thanks to Michal Kučera www.n0lim.it) Danish (da_DK) (thanks to Byrial Ole Jensed) Dutch (nl_NL) (thanks to Bart Duineveld) Estonian (et) (thanks to Ahto Tanner) Greek (el) (thanks to Aris, www.paraxeno.net) Farsi/Persian (fa_IR) (thanks to Mostafa Asadi, www.ma73.ir, Morteza Gholami) Finnish (fi) (thanks to Mikko Sederholm) French (fr_FR) (thanks to Martel Benjamin, Capronnier luc) German (de_DE) (thanks to Thomas Hartung, Lothar Schiborr) Hebrew (he_IL) (thanks to Sagive SEO) Hindi (hi_IN) (thanks to Outshine Solutions, www.outshinesolutions.com) Hungarian (hu_HU) (thanks to Peter Aprily) Japanese (ja) (thanks to Foken) Indonesian (id_ID) (thanks to Nasrulhaq Muiz, www.al-badar.net) Italian (it_IT) (thanks to Marco) Latvian (lv) (thanks to Juris O) Lithuanian (lt_LT) (thanks to Arnas) Norwegian (nb_NO) (thanks to Tore Hjartland) Polish (pl_PL) (thanks to Krzysztof Opuchlik) Portuguese (pt_PT) (thanks to João Paulo Antunes) Romanian (ro_RO) (thanks to Ciprian) Russian (ru_RU) Serbian (sr_RS) (thanks to Radovan Georgijevic) Slovak (sk_SK) (thanks to Branco Radenovich) Slovenian (sl_SI) (thanks to Uroš Klopčič, www.klopcic.net) Spanish (es_ES) Swedish (sv_SE) (thanks to Christer Rönningborg, Blittan) Tagalog (tl) (thanks to Roozbeh Jalali, www.languageconnect.net) Turkish (tr_TR) (thanks to Can Atasever, www.canatasever.com) Ukrainian (uk) Vietnamese (vi_VN) (thanks to NDT Solutions) Some translations may be incomplete. We continuously add new features that require translation. To create or update a language pack, send the text of PO and MO files to BestWebSoft. Download the latest Poedit version here. Recommended Plugins Limit Attempts — Protect your WordPress site against brute force attacks by limiting login attempts. Updater — Automatically check and update your WordPress core, plugins, and themes to the latest versions. Contact Form — A simple and essential contact form plugin for any WordPress site. Subscriber — Add an email newsletter sign-up form to WordPress posts, pages, and widgets. Collect and manage subscriber data effectively. Credits This plugin includes a license verification mechanism to ensure the authenticity of your license key and provide access to premium features and updates. The verification process involves securely connecting to our external service hosted on the BestWebSoft website: BestWebSoft. Privacy Policy End User License Agreement

Kama Spamblock blocks simple automated comment spam. It is invisible to normal visitors and does not use captchas. The plugin protects the standard WordPress comment endpoint, wp-comments-post.php. It adds a small check to the comment form. Direct requests that skip the form are blocked. This is a basic check, not proof that a person wrote the comment. Bots that load the page and run JavaScript can pass it. Kama Spamblock does not replace a full anti-spam service. It also checks pings and trackbacks for a link back to your site. Even if you are using an external comment system like Disqus, Kama Spamblock can add lightweight protection. Automated requests can be posted directly to the ‘wp-comments-post.php’ file, where the plugin can block basic bots. Simple and effective protection Kama Spamblock combines several small checks that are inexpensive for the site and invisible during normal commenting: The protective field name and its unique code rotate together every four hours. Ten recent pairs remain valid for pages served from full-page cache. Each marker is tied to the specific WordPress post, so a marker copied from another comment form is rejected. The form must remain open for at least three seconds before it can be accepted. Protective fields are added only after interaction with the comment submit button. If a valid comment is blocked, a JavaScript-only retry form preserves the entered data. The retry challenge changes its HTML structure to make basic scraping less reliable. Pingbacks and trackbacks must return a successful HTTP response, non-binary content, and a real backlink. These checks deliberately remain lightweight. A capable bot that loads the page, runs JavaScript, and reproduces normal browser behaviour can still pass them. Using Kama Spamblock with other anti-spam plugins Kama Spamblock can work with a full anti-spam plugin or service. It blocks simple direct spam requests first. The other tool can then check the comments that remain. For example, it can analyse comment text, reputation, or behaviour. The plugins complement each other. For this combination to work as intended: The other plugin should use the standard WordPress comment flow, or check comments after Kama Spamblock allows them. The site must show the standard comment form and allow the plugin’s JavaScript to run. Set the correct ID for the form’s submit button in the plugin settings. Test the setup if another plugin replaces the comment form, uses AJAX, or sends comments to its own endpoint. Kama Spamblock may need extra integration, or it may not check those comments.