Comparison · Security / bot protection
reCAPTCHA vs Cloudflare Email Protection: which do popular websites use?
As of 2026-10-03, reCAPTCHA is detected on 433 of 7,905 popular websites (5.5%) and Cloudflare Email Protection on 249 (3.1%): reCAPTCHA is 1.7x as common. 20 sites use both.
Adoption at a glance
| reCAPTCHA | Cloudflare Email Protection | |
|---|---|---|
| Sites using it | 433 | 249 |
| Share of 7,905 sites | 5.5% | 3.1% |
| Share of the top 1,000 sites (719 readable) | 4.0% | 2.2% |
| Only this one of the two | 413 | 229 |
Both: 20 sites. Detected on 2026-10-03 from the home page; a technology that leaves no trace there is not counted.
By site sector
| Sector | Sites | reCAPTCHA | Cloudflare Email Protection |
|---|---|---|---|
| Other | 6,341 | 5.8% | 3.4% |
| News | 349 | 6.9% | 1.7% |
| Entertainment | 316 | 4.1% | 3.5% |
| Education | 247 | 1.2% | 0.4% |
| Government | 243 | 4.5% | 0.8% |
| Technology | 135 | 7.4% | 0.7% |
| Finance | 97 | 1.0% | 5.2% |
| E-commerce | 92 | 2.2% | 4.3% |
Share of the sector's sites using each technology; sectors with at least 50 sites.
By top-level domain
| TLD | Sites | reCAPTCHA | Cloudflare Email Protection |
|---|---|---|---|
| .com | 4,168 | 6.6% | 3.3% |
| .org | 439 | 4.8% | 3.6% |
| .net | 335 | 4.5% | 4.5% |
| .ru | 259 | 5.8% | <0.1% |
| .jp | 190 | 1.6% | <0.1% |
| .io | 187 | 1.6% | 5.3% |
| .de | 181 | 2.2% | 0.6% |
| .edu | 160 | 1.9% | 0.6% |
| .gov | 110 | 4.5% | 1.8% |
Top-level domains with at least 100 sites.
Most popular sites using only reCAPTCHA
- weebly.com #145
- globo.com #177
- duolingo.com #198
- docker.com #223
- time.com #251
- teamviewer.com #260
- klaviyo.com #266
- techcrunch.com #284
- mediafire.com #341
- lg.com #403
- webmd.com #432
- costco.com #447
- classlink.com #503
- gofundme.com #513
- lge.com #514
- hltv.org #524
- clever.com #551
- lookmovie2.to #633
- jutarnji.hr #694
- therapservices.net #761
Most popular sites using only Cloudflare Email Protection
- nist.gov #105
- prnewswire.com #359
- garmin.com #474
- litnet.com #602
- aternos.org #657
- ptt.cc #718
- testbook.com #723
- czbooks.net #776
- 1password.com #918
- russianfood.com #934
- disdarrummers.shop #957
- alura.com.br #959
- wa.link #961
- ninjarmm.com #969
- av19t.com #992
- acronis.com #1,034
- 5movierulz.kitchen #1,041
- ahrefs.com #1,068
- cookiebot.com #1,149
- signal.org #1,181
Each technology
FAQ
- Which is more popular, reCAPTCHA or Cloudflare Email Protection?
- As of 2026-10-03, reCAPTCHA is detected on 433 of 7,905 popular websites (5.5%) and Cloudflare Email Protection on 249 (3.1%): reCAPTCHA is 1.7x as common. 20 sites use both.
- Which do the most popular websites prefer?
- Among the 719 sites of the top 1,000 that we could read, 29 (4.0%) use reCAPTCHA and 16 (2.2%) use Cloudflare Email Protection.
- Can a website use both reCAPTCHA and Cloudflare Email Protection?
- Yes: 20 of the 7,905 sites show both (0.3%); 413 show only reCAPTCHA and 229 only Cloudflare Email Protection.