Cookie Notice

Last updated on 18 January, 2026

This Cookie Notice describes how Ahrefs Pte Ltd ("Ahrefs") (UEN No. 201227417H) of 16 Raffles Quay #33-03 Hong Leong Building Singapore 048581 uses cookies and similar technologies to collect and store information when you visit our websites and/or use our services. It supplements our Privacy Policy.

When you use our website and/or use our services, we and selected third parties may use cookies and similar technologies in order to provide you with a better, faster and safer user experience.

1. What are cookies and similar technologies?

a) Cookies

Cookies are small text files (typically made up of letters and numbers) that are automatically created by your browser and stored on your device. Cookies allow for a recognition of a specific device or browser. Other tracking technologies include web beacons, Java Scripts, entity tags, and HTML5 local storage.

  • We use cookies and similar technologies that remain on your device only as long as your browser is active (session cookies), as well as cookies and similar technologies that remain on your device longer (persistent cookies).
  • First-party cookies are set by the provider whose online service you are using (e.g. the operator of the website you are visiting)
  • Third-party cookies are set by a provider other than the provider whose online service you are using (e.g. the operator of a website other than the one you are visiting)

b) Similar technologies

Similar technologies are technologies which enable tracking user behaviour.

  • Web Beacons – Web beacons are small, transparent images that are embedded in web pages, applications, and emails that are sometimes called "clear gifs", "single pixel gifs", "page tags" or "web bugs". We use web beacons in marketing emails to track and to test the effectiveness of marketing activities, and to find out if an email has been opened and acted on.
  • JavaScript – JavaScript are code snippets embedded in various parts of websites and applications that facilitate a variety of operations including accelerating the refresh speed of certain functionality or monitoring usage of various online components.
  • Entity Tags – Entity Tags are HTTP code mechanisms that allow portions of websites to be stored or "cached" within your browser and validates these caches when the website is opened, accelerating website performance since the web server does not need to send a full response if the content has not changed.
  • HTML5 Local Storage – HTML5 local storage allows data from websites to be stored or "cached" within your browser to store and retrieve data in HTML5 pages when the website is revisited.

2. Details on the use of cookies and similar technologies

The tables below list the cookies and similar technologies used in relation to our website and/or services and provides further information on the source, the storage duration and the purpose for each cookie.

a) Cookies necessary to provide our website/services (essential cookies)

We use cookies, web beacons and similar technologies that are necessary to provide and operate our website and/or services, such as allowing you access to our websites, services, applications and tools.

b) Functional cookies / similar technologies

Functional cookies allow us to remember choices a user makes (such as the language or region the user is in) and provide enhanced, more personalised features. These cookies can be used to remember changes a visitor has made to its text size or fonts, or provide services a visitor has requested, such as to watch a video or leave a comment.

c) Analytics tools / similar technologies

We use the analytical cookies listed below to improve our website and/or services. These cookies help provide information on metrics such as the number of visitors, bounce rate, traffic source etc.

You may prevent the collection of data through these cookies by adjusting your browser settings accordingly. However, this may affect the ability to use our website and/or services.

d) Performance cookies

Performance cookies are used to understand and analyse the key performance indexes of the website which helps in delivering a better user experience for the visitors.

e) Advertisement cookies

Advertisement cookies are used to provide visitors with customised advertisements based on the pages you visited previously and to analyse the effectiveness of the advertisement campaigns.