ID5 on new websites

Privacy-focused shared advertising identifier for ad tech, designed as a third-party cookie alternative.

Sites using ID5
283
since Apr 2026
Last 30 days
0.0%
of new sites, to Oct 18
no change on the 30 days before
Last 7 days
0.0%
of new sites, 7-day average
no change on the week before
Rank in Advertising
#48
of 1287 tools, all time
In our data since Apr 2026
Last seen Oct 19, 2026
Website id5.io

What we found

  1. ID5 appeared on about 79 new sites in the last 30 days.[1]
  2. Eight in ten new ID5 sites also use Google Ads.

Share of new sites using ID5

0.000% 0.002% 0.004% 0.006% 0.008% 10 Sep Oct

The line is the 7-day average share of new sites that use ID5, since 10 September.

Who uses ID5

Kind of site 91 sites with a known type
TypeSitesShareBar
Games 33 36.3%
Developer Tools 14 15.4%
Health 9 9.9%
Content 8 8.8%
Crypto 5 5.5%
Social 4 4.4%
Marketing 3 3.3%
Productivity 3 3.3%
AI 2 2.2%
Design 2 2.2%
Directory 2 2.2%
Finance 2 2.2%
Country[2] 44 sites with a likely country
CountrySitesShareBar
US 19 43.2%
France 6 13.6%
Canada 5 11.4%
India 4 9.1%
Bulgaria 1 2.3%
Germany 1 2.3%
UK 1 2.3%
Italy 1 2.3%
Japan 1 2.3%
Netherlands 1 2.3%
Peru 1 2.3%
Philippines 1 2.3%
Domain ending 281 sites
EndingSitesShareBar
.com 158 56.2%
.org 29 10.3%
.net 23 8.2%
.online 13 4.6%
.live 8 2.9%
.fr 5 1.8%
.io 4 1.4%
.xyz 4 1.4%
.app 3 1.1%
.ca 3 1.1%
.in 3 1.1%
.site 3 1.1%
Green hosting[3] 31 checked sites since Apr 2026
SitesGreenBar
ID5 74%
All new sites 47%

Advertising on new sites

# Movement Tool Share of all sites Share of category Bar
1 – Facebook Pixel 3.4% 47.3%
2 – Google Ads 2.7% 37.3%
3 – Google AdSense 1.3% 17.8%
4 – TikTok Pixel 0.8% 10.7%
5 – Pinterest 0.6% 8.1%
…
48 ▼23 ID5 <0.1% 0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Advertising tool. Among September launches it ranked #60 in Advertising, down from #37 in August. All 1287 in Advertising

Often used with ID5

Tool Sites with both vs all new sites Bar
Prebid.js 202 3921x
Google Ads 236 31x
Facebook Pixel 113 12x
Google Analytics 230 7.9x
Google Tag Manager 232 7.0x

Tools that turn up far more often on ID5 sites than on new sites in general, and how many times as common each one is there.

Recently launched products built on ID5

Notes

  1. These figures cover websites that went live since April 2026, not the web as a whole.
  2. Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.
  3. Green hosting is the share whose web host The Green Web Foundation lists as running on green energy, among sites checked since 1 April 2026, against the same share for every new site we checked over that time. Data from The Green Web Foundation.

How this page is made

FirstSited looks at each new website near the day it goes live and records what it was built with. We do not go back later, so these figures describe what sites launch with, not what they run today. A site counts towards ID5 when we detect ID5 on it at that look.

Every share on this page is a proportion of the new sites we were tracking at the time. Sites we found across the wider web count towards the figures, but only product launches are listed by name. How we detect technologies · How we find new sites

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.