// javascript libraries

Websites that use Darkmode.js in 2026

We track 462 websites running Darkmode.js across 22 industries and 23 countries. Browse a sample of 52 matched company profiles below, each with industry, location, and verified contact data.

industries: 22
countries: 23
websites tracked: 462

Domain, industry and country per company

Free CSV export

Download the 52 Darkmode.js customers

Share this list on LinkedIn to unlock the full export of 52 Darkmode.js customers, no sign-up required.

Free instant access · 52 verified Darkmode.js customers

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Companies using Darkmode.js

Showing 25 of 52

Website	Company	Industry	HQ
simplistica.net	Simplistica.netsimplistica.net	Marketing Services	US
saktimobile.com	Sakti Coal Jaya, PTsaktimobile.com	Information Services	ID
barnsley.ac.uk	Barnsley Collegebarnsley.ac.uk	Education Management	GB
sfu.ca	SFU Venture Connectionsfu.ca	Higher Education	CA
rikkyo.ac.jp	立教大学 / Rikkyo Universityrikkyo.ac.jp	Research Services	JP
pythonanywhere.com	PythonAnywherepythonanywhere.com	Information Technology and Services	GB
vooks.net	Vooksvooks.net		AU
meteorahotels.com	meteorahotelsmeteorahotels.com		GR
intrepidgeeks.com	intrepid Geeksintrepidgeeks.com	Education Administration Programs	IN
neocities.org	NeoCitiesneocities.org	Oil and Gas	SG
signals.blue	Signals Bluesignals.blue		🌐
yuzhouwan.com	宇宙湾yuzhouwan.com		🌐
samtgemeinde-rosche.de	startseitesamtgemeinde-rosche.de		DE
tuyenquang.gov.vn	Phòng Cảnh Sát Pccctuyenquang.gov.vn	Entertainment Providers	VN
petale07.org	pétale 07petale07.org	Industry Associations	FR
moviekoop.com	Moviekoopmoviekoop.com	Entertainment	IN
nabla.no	nabla- linjeforeningen for fysikk og matematikknabla.no	Higher Education	NO
forum64.de	Forum Deutschforum64.de		DE
barnsleysixthformcollege.co.uk	barnsley sixth form collegebarnsleysixthformcollege.co.uk	Education Management	GB
mairi.ba.gov.br	Prefeitura Municipal De Mairimairi.ba.gov.br	Government Administration	BR
cafarnaum.ba.gov.br	Prefeitura Municipal De Cafarnaumcafarnaum.ba.gov.br	Government Administration	BR
santabarbara.ba.gov.br	Secretaria de Agricultura e Meio Ambientesantabarbara.ba.gov.br	Accounting	BR
keshavtechnosys.com	Keshav Technosyskeshavtechnosys.com	Information Services	IN
meinming.de	ming #meinCoachmeinming.de	Alternative Medicine	DE
diehalle.hamburg	Parkour Creation e.V.diehalle.hamburg	Non-profit Organizations	DE

Refine to your ICP

Narrow these 52 companies down to the ones that match your ideal customer profile.

Revenue range Headcount Tech stack Funding stage Hiring signals Buyer intent Job title Location Founded year

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Industry breakdown

8 (15%)

Government Administration

2 (4%)

Education Management

2 (4%)

Higher Education

2 (4%)

Information Services

1 (2%)

Software Development

How many websites use Darkmode.js?

We track 462 websites that use Darkmode.js in 2026. Those sites span 22 industries and 23 countries. The crawler re-checks each domain daily. So the count moves as sites adopt Darkmode.js or drop it.

Darkmode.js belongs to the JavaScript libraries category. Sites in that category tend to share a similar stack. As a result, they often share buying patterns too.

The table above shows a sample of 52 matched companies. Each row carries an industry, a country, and a live domain. You can search it, sort it, and export it.

Which industries use Darkmode.js most?

Adoption is not spread evenly. Instead, a few industries account for most of the matched sample:

Government Administration15.384615384615385%
Education Management3.8461538461538463%
Higher Education3.8461538461538463%
Information Services3.8461538461538463%
Software Development1.9230769230769231%

Government Administration leads that list. However, the long tail matters just as much. Adoption reaches 22 industries in total. So you can narrow the list to the segment you sell into.

Where are websites that use Darkmode.js based?

The matched companies sit in 23 countries. These lead the sample:

Brazil 8
Germany 4
United Kingdom 3
India 3
Brazil 3

Brazil is the largest single market in this sample. Because the country is stored per row, you can filter before you export. That keeps your outreach inside one timezone and one legal regime.

How to find websites that use Darkmode.js

Start with the table above. Then follow these four steps to turn it into an outreach list:

Filter the sample. Narrow by industry or country until the rows match your ideal customer profile.
Export the domains. Share the page to unlock the CSV, or sign in for the full dataset.
Find the people. Run each domain through Domain Search to pull every work email behind it.
Verify before you send. Pass the results through the Email Verifier so your bounce rate stays low.

Working at volume? Push the whole export through Bulk Tasks instead, or call the Domain Search API directly from your own stack.

Frequently asked questions

How many websites use Darkmode.js?

We track 462 websites that use Darkmode.js. The index refreshes daily, so the number shifts as sites adopt or drop it. Of those, 52 are matched to a company profile with industry, location, and contact data.

Can I download the list of websites that use Darkmode.js?

Yes. Share the page on LinkedIn to unlock a CSV export of the matched sample, with no signup required. For the full dataset and verified email addresses, create a free Tomba account.

Which industries use Darkmode.js the most?

Government Administration leads the matched sample, at 15.384615384615385% of companies. In total, websites that use Darkmode.js span 22 industries.

How fresh is the Darkmode.js data?

Our crawler re-checks technology signals daily. So a site that removes Darkmode.js drops out of the index, and a new adopter appears without you refreshing anything.

Can I get email addresses for websites that use Darkmode.js?

Yes. Every domain in the table can be enriched with verified work emails and direct phone numbers. Run a single domain through Domain Search, or push the whole export through Bulk Tasks.

// get this list by api

Companies using Darkmode.js, one request away

Filter the company search by technology, then find and verify the people at each company. The technology filter is available on paid plans; 50 companies per page.

01POST/reveal/searchCompanies that match a plain-language query or filters1 search credit 02GET/domain-searchThe email addresses at a company, with names, roles and the company profile1 search credit per 10 results 03GET/email-verifierWhether an address is deliverable: syntax, MX, SMTP, catch-all and greylisting checks1 verification credit

POST /reveal/search

curl -X POST "https://api.tomba.io/v1/reveal/search" \
  -H "X-Tomba-Key: $TOMBA_API_KEY" \
  -H "X-Tomba-Secret: $TOMBA_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{"filters":{"technologies":{"include":["Darkmode.js"]}},"page":1}'

const res = await fetch("https://api.tomba.io/v1/reveal/search", {
  method: "POST",
  headers: {
    "X-Tomba-Key": process.env.TOMBA_API_KEY,
    "X-Tomba-Secret": process.env.TOMBA_SECRET_KEY,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({"filters":{"technologies":{"include":["Darkmode.js"]}},"page":1})
});
const { data } = await res.json(); // data.companies

import os, requests

res = requests.post(
    "https://api.tomba.io/v1/reveal/search",
    headers={
        "X-Tomba-Key": os.environ["TOMBA_API_KEY"],
        "X-Tomba-Secret": os.environ["TOMBA_SECRET_KEY"],
    },
    json={"filters":{"technologies":{"include":["Darkmode.js"]}},"page":1},
)
companies = res.json()["data"]["companies"]

// technologies

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Websites that use Darkmode.js in 2026

Download the 52 Darkmode.js customers

Companies using Darkmode.js

Refine to your ICP

Industry breakdown

How many websites use Darkmode.js?

Which industries use Darkmode.js most?

Where are websites that use Darkmode.js based?

How to find websites that use Darkmode.js

Frequently asked questions

Companies using Darkmode.js, one request away

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