⚡ Captchas in Bulgaria

Captchas (from an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart") are security technologies used to verify whether a user is a human or a bot by presenting challenges that are easy to solve for people but difficult for automated systems.

Bulgaria is a Southeastern European country with a population of around 6.5 million people.

According to our research, captcha services are used on 9% of websites from Bulgaria.

Statistics based on 13K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top captcha services in Bulgaria in 2026, based on market share.

The most popular is reCAPTCHA, which dominates the market with an overwhelming 87.7% share.
It is followed by hCaptcha with 11.5% and Cloudflare Turnstile with 7.1%.

reCAPTCHA 87.7%
hCaptcha 11.5%
Cloudflare Turnstile 7.1%
Altcha 0.08%
MTCaptcha 0.08%
Friendly Captcha 0.08%

🚀 Highlights

Here is a list of the top services that are more popular in Bulgaria than worldwide.
Differences between global and country rankings are shown in parentheses.

4. Altcha ^(-2)
5. MTCaptcha ^(-5)

✨ Best Captcha Services

Below is a more detailed list of 6 captcha services used on sites from Bulgaria, ranked by their market share.

Rank	Name	Market share
1	reCAPTCHA Mountain View, California, United States A Google service that protects websites from spam, fraud, and automated abuse by distinguishing human users from bots. Free tier$8+/month	87.7%
2	hCaptcha San Francisco, California, United States A security service for detecting and preventing human and automated abuse on websites and applications, often used as a drop-in alternative to reCAPTCHA. Free$99+/month	11.5%
3	Cloudflare Turnstile San Francisco, California, United States A user-friendly CAPTCHA alternative that verifies human visitors without requiring them to solve interactive puzzles or identify objects. Free$$$	7.1%
4	Altcha Brno, Czech Republic An open-source, privacy-first, self-hosted captcha alternative that uses a proof-of-work mechanism to protect websites, APIs, and online services from spam and unwanted content. FreeOpen source€99+/month	0.08%
5	MTCaptcha Mountain View, California, United States A GDPR and WCAG compliant enterprise captcha service. Free tier$29+/month	0.08%
6	Friendly Captcha Woerthsee, Germany A European captcha service that protects websites from bots and automated abuse while prioritizing user privacy, security, and accessibility. Free€9+/month	0.08%

👉 See Also

🌎 Captchas in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 13,524 websites from Bulgaria.
We currently track the presence of 13 captcha services across the web.
Of these, 6 were detected on websites from Bulgaria.
Statistics were last calculated on May 14, 2026.
For more details, see our methodology and disclaimer.