Form spam
Keep contact forms, comments and signups free of automated submissions.
Customization
Looks native. Feels native.
Match the widget to your brand by customizing its appearance.
Trusted by companies around the world
Looks like part of your product
Pick your colors, fonts and corner radius and the widget blends right into your UI. Light and dark themes follow your design, and with 40+ languages built in, it reads native too.
- Themes & branding — set colors, fonts and corner radius. Light and dark modes adapt automatically to your interface.
- Localization built in — every label can be translated and the widget ships with support for 40+ languages out of the box.
Choose how it appears
Show the widget inline, as a floating badge, or fully invisible, whichever fits the flow. The same configuration works across web, mobile and embedded experiences without compromising on brand.
- Inline, floating or invisible — show the widget the way that fits your flow: embedded inline, as a corner badge, or fully invisible.
- Same config everywhere — one configuration drives the experience across web, mobile and embedded surfaces.
On-brand verification across every threat
Bot accounts
Catch automated accounts at signup so they never reach your community, marketplace or growth metrics.
Account takeover
Block credential stuffing and brute-force attacks before attackers gain access to legitimate accounts.
Frequently asked questions
Everything you need to know. Can't find your answer? Contact our support team.
Can I match the CAPTCHA widget to my brand?
Yes. You can set colors, fonts and corner radius so the widget blends into your interface, with light and dark themes that adapt automatically to your design.
Which languages does the widget support?
The CaptchaFox widget ships with support for 40+ languages out of the box, and every label can be customized or translated to fit your audience.
What display modes are available?
The widget can be shown inline within a form, as a floating corner badge, or run fully invisible, whichever fits your flow best.
Can I white-label the CAPTCHA widget?
Yes. On select plans you can remove CaptchaFox branding entirely, so the verification step appears as a native part of your own product.
Does one configuration work across web and mobile?
Yes. The same configuration drives the widget across web, mobile and embedded experiences, so your branding stays consistent everywhere without duplicate setup.
Take a look at our latest articles
Read CaptchaFox guides, case studies and insights on bot protection, spam prevention and account security.
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New Intelligence APIs now available
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April 9, 2026
Best European CAPTCHA Solutions in 2026
Compare the top European CAPTCHA providers for 2026. Evaluate privacy, GDPR compliance, accessibility, and pricing to find the right fit.
Read nowFight bots and protect your users' data.
Don't give fraudsters and spammers a chance and protect your website with CaptchaFox today.
