Ka

Download websites using KaTeX

JavaScript library · by Khan Academy · since 2014 · open source

16K sites -31.28% YoY Latest export · 0 days ago
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About KaTeX

KaTeX is a fast, open-source JavaScript library for rendering TeX mathematical notation in web browsers, developed and open-sourced by Khan Academy. Unlike server-side rendering solutions, KaTeX performs all typesetting client-side and produces consistent, high-quality output across browsers without requiring JavaScript execution to display the final result, thanks to pure CSS and HTML output.

KaTeX supports a broad subset of LaTeX math syntax and is widely used in educational platforms, documentation sites, and scientific publishing tools. Its emphasis on rendering speed and predictable output makes it a popular choice for sites that display large volumes of mathematical expressions. The library can also render to strings for server-side or static-site workflows.

At a glance

CategoryJavaScript Library
VendorKhan Academy
LanguageJavaScript
LicenseMIT
First release2014-09-01
16,005 Sites detected
0.0% Of all websites
-31.3% YoY change
@ Most used version

Database preview of KaTeX sites

KaTeX detection is a value inside the Technologies column. Two datasets carry it — switch between them to compare what's included.

webatla-technologies-katex-2026-06-13.jsonl.zst · 16,005 rows · 1 B · 14 columns Daily fresh export
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The data in this record is provided by Identity Digital or the Registry Operator for informational purposes only, and accuracy is not guaranteed. This service is intended only for query-based access. You agree that you will use this data only for lawful purposes and that, under no circumstances will you use this data to (a) allow, enable, or otherwise support the transmission by e-mail, telephone, or facsimile of mass unsolicited, commercial advertising or solicitations to entities other than the data recipient's own existing customers; or (b) enable high volume, automated, electronic processes that send queries or data to the systems of Registry Operator, a Registrar, or Identity Digital except as reasonably necessary to register domain names or modify existing registrations. When using the Whois service, please consider the following: The Whois service is not a replacement for standard EPP commands to the SRS service. Whois is not considered authoritative for registered domain objects. The Whois service may be scheduled for downtime during production or OT&E maintenance periods. Queries to the Whois services are throttled. If too many queries are received from a single IP address within a specified time, the service will begin to reject further queries for a period of time to prevent disruption of Whois service access. Abuse of the Whois system through data mining is mitigated by detecting and limiting bulk query access from single sources. Where applicable, the presence of a [Non-Public Data] tag indicates that such data is not made publicly available due to applicable data privacy laws or requirements. Should you wish to contact the registrant, please refer to the Whois records available through the registrar URL listed above. Access to non-public data may be provided, upon request, where it can be reasonably confirmed that the requester holds a specific legitimate interest and a proper legal basis for accessing the withheld data. Access to this data provided by Identity Digital can be requested by submitting a request via the form found at https://www.identity.digital/about/policies/whois-layered-access/. The Registrar of Record identified in this output may have an RDDS service that can be queried for additional information on how to contact the Registrant, Admin, or Tech contact of the queried domain name. Identity Digital Inc. and Registry Operator reserve the right to modify these terms at any time. By submitting this query, you agree to abide by this policy.\r\n"}Domain is active
jvns.cacacaICANNHTTP 20075.2.60.5US{"github":["https://github.com/jvns"],"bluesky":["https://bsky.app/profile/b0rk.jvns.ca"]}2026-05-16RSS, HSTS, Hugo 0.135.0, KaTeX @, Netlify, jsDelivr, Open Graph2026-05-29TRUE{"A":["75.2.60.5"],"MX":[{"host":"in1-smtp.messagingengine.com","priority":10},{"host":"in2-smtp.messagingengine.com","priority":20}],"NS":["ns-185-a.gandi.net","ns-2-b.gandi.net","ns-203-c.gandi.net"],"SOA":{"mname":"ns1.gandi.net","retry":3600,"rname":"hostmaster.gandi.net","expire":604800,"serial":1779926400,"minimum":10800,"refresh":10800},"TXT":["google-site-verification=UCeQsiXN_jU_c615mU-QVGv7w5G6CnkH2XkpMznlVSY","v=spf1 include:spf.messagingengine.com ?all"]}0.0000025859115,432,1772026-03-11RDAP2011-03-162027-03-162026-03-11Gandi Services Inc., Gandi SAS{"raw_response":{"links":[{"rel":"self","href":"https://rdap.ca.fury.ca/rdap/domain/jvns.ca","type":"application/rdap+json","title":"Authoritative URL for this 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Showing 5 of 16,005 rows · Technologies · Full website tech stack per site — CMS, payments, analytics, frameworks.

+ 4 datasets don't carry the Technologies column.

KaTeX sites by country

CountrySites% of country web
🇺🇸 United States 10,201
🇩🇪 Germany 1,236
🇨🇳 China 1,024
🇷🇺 Russia 1,006
🇫🇷 France 267

KaTeX sites by TLD

TLDSitesShare
.com 5,529
.io 1,166
.ru 873
.org 779
.cn 619

Version distribution

Detected KaTeX versions across all 16,005 sites.

VersionSitesShare
@ 4,254 81.1%
/ 990 18.9%

The KaTeX dataset

Every site we've detected as running KaTeX — with version, hosting, country, TLD and traffic rank.

KaTeX lives inside 2 datasets

KaTeX detection is part of Technologies (€159/mo) and All data (€599/mo). Buy either to filter the full 16,005-site list — or grab a free preview first.

See datasets ↓ Download free preview (20 rows)

Your KaTeX downloads

The datasets you own, sliced to KaTeX. Every button streams the latest daily export directly.

Format: JSONL (zstd) Latest export: 0 days ago

API, columns & recipes → /account/api

Frequently asked questions

How many websites use KaTeX?

webatla detects KaTeX on 16K websites, refreshed daily — each with its domain, DNS, WHOIS, IP, country and ranking.

Can I download the list of websites using KaTeX?

Yes — as structured JSONL. Pay once for one month, no subscription; grab a free sample first.

What's included for each site, and how fresh is it?

Domain, DNS, RDAP/WHOIS, the full technology stack, IP & country, PageRank and Harmonic — re-detected and re-exported daily.