Cookie Notice

Last modified: July 01, 2024

This Cookie Notice describes how Ahrefs Pte Ltd ("Ahrefs") (UEN No. 201227417H) 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 Notice.
When you use our website and/or 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 below charts list the cookies used 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. This includes technologies that allow you access to our websites, services, applications and tools.

Cookie Name, Source, DurationPurpose

Cloudflare Bot Management Cloudflare, Inc.

  • __cf_bm: 3 seconds

  • __cfruid: duration of the session

  • cf_ob_info: 3 seconds

  • cf_use_ob: 3 seconds

  • cfmrk_cic: 3 months

Spam and bots protection.

Cloudflare Bot Management is a malicious bot protection and management service provided by Cloudflare, Inc.

Personal data processed: As specified in the Cloudflare Privacy Policy.

Place of processing: US.

b) Functional cookies / similar technologies

Certain cookies / similar technologies allow us to remember choices a user makes (such as the language or region the user is in) and provide enhanced, more personalized features. These cookies / similar technologies 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.

Cookie Name, Source, DurationPurpose

Google drive account access Google LLC / Google Ireland Limited

N/A

This service allows this Application to connect with the User's account on Google Drive, provided by Google LLC or by Google Ireland Limited, depending on how the Owner manages the Data processing.

Google Drive is used to export data corresponding to reports generated by us on User's request.

Additionally, user's email address is stored for the provision of this Service.

Personal Data processed: Data communicated while using the service; email address.

Place of processing: United States - privacy policy; Ireland - privacy policy

Wistia widget (Wistia, Inc.) Wistia, Inc.

N/A

Displaying content from external platforms

Wistia is a video content visualization service provided by Wistia, Inc. that allows us to incorporate content of this kind on our website.

Personal data processed: cookies and usage data.

Place of processing: US.

YouTube video widget Google LLC / Google Ireland Limited

  • PREF: 8 months

  • VISITOR_INFO1_LIVE: 8 months

  • YSC: duration of the session

Displaying content from external platforms

YouTube is a video content visualization service provided by Google LLC or by Google Ireland Limited that allows us to incorporate content of this kind on our website.

Personal data processed: As specified in the Google Privacy Policy.

Place of processing: US / Ireland

c) Analytics tools / similar technologies

We use the analysis tools / similar technologies listed below to improve our website and services (analytics to assess how popular certain content is and to take future decisions on what to focus on).

You may prevent the collection of data through the analysis tools / similar technologies by adjusting your browser settings accordingly. However, this may affect the ability to use of our website/services.

Cookie Name, Source, DurationPurpose

Matomo Matomo

  • _pk_cvar*: 30 minutes

  • _pk_hsr*: 30 minutes

  • _pk_id*: 2 years

  • _pk_ref*: 7 months

  • _pk_ses*: 30 minutes

  • _pk_testcookie*: duration of the session

Analytics

Matomo is an analytics software which we use to analyze data directly without the help of third parties.

Personal Data processed: cookies and usage data.

Intercom Intercom Inc., Intercom R&D Unlimited Company, Intercom Software Australia Pty Ltd or by Intercom Software UK Limited

  • intercom-id-*: 10 months

  • intercom-session-*: 7 days

  • intercom-test: indefinite

User database management

This type of service allows Ahrefs to build user profiles by starting from an email address, a personal name, or other information that the user provides to Ahrefs, as well as track user activities through analytics features.

This Personal Data may also be matched with publicly available information about the user (such as social networks' profiles) and used to build private profiles that Ahrefs can display and use for improving its services.

Some of these services may also enable the sending of timed messages to the user, such as emails based on specific actions performed on these services.