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Search the table by property, category, state or year, e.g. mp>1000, noble gas. Search guide

Privacy Policy

Last updated: 10 November 2026.

periodixtable.com is a free reference site. You do not need an account to use it, and we do not ask for personal information to browse the periodic table, use the tools or take the quiz. This policy explains what little data is involved.

Summary

  • No accounts and no sign-up forms.
  • We use Google Analytics to understand how the site is used. It may use cookies or similar technologies.
  • We show ads from Google AdSense. Google and its partners may use cookies to show ads, including ads based on your past visits to this and other websites. In the EEA, the UK and Switzerland we ask for your consent first.
  • Your display preferences and quiz best score are stored only on your device.
  • What you type into search, compare, the calculator and the quiz is processed in your browser and not sent to us.
  • If you email us, we receive your address and message, and use them only to reply.

Information we collect

We do not ask for names, email addresses or other personal details through the site. Like any web server, our hosting provider may keep standard technical logs (such as IP address, browser type, referring page, requested page and time of request) for security, abuse prevention and to keep the site running. Google Analytics also collects data through cookies and similar technologies, as described below. We do not use any of this to identify individual visitors.

Data stored in your browser

The site uses your browser’s local storage to remember your choices so they apply on your next visit. These values stay on your device and are never sent to us:

  • your light or dark theme;
  • your temperature unit (kelvin, Celsius or Fahrenheit);
  • periodic table display settings, such as zoom, toolbar position and heatmap options;
  • your language, if you pick one from the language menu;
  • your best score in the element quiz.

The search guide and the language suggestion may also keep a small value in session storage for the current tab only (for example your scroll position, or that you closed the language suggestion). You can remove all of this at any time by clearing your site data in your browser settings.

Search and tools

Element search, comparison, the molar mass calculator, the printable table and the quiz run in your browser. What you type into them is not sent to our servers. Some pages load static data files (such as compounds and isotopes) from our own domain when you open them.

Analytics (Google Analytics)

We use Google Analytics, a web analytics service provided by Google, to see which pages are visited, how long people stay and roughly where visitors come from, so we can improve the site. Google Analytics uses cookies or similar identifiers and receives information such as your IP address, browser, device, pages viewed and approximate location. We do not use it to identify you personally. Learn more in How Google uses information from sites or apps that use its services. You can opt out by installing the Google Analytics opt-out browser add-on.

Advertising (Google AdSense)

We use Google AdSense to show ads, which keeps the site free. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites. Google’s use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and/or other sites on the Internet.

You can opt out of personalised advertising in Google Ads Settings, and opt out of other vendors’ personalised ads at www.aboutads.info. Learn more in How Google uses cookies in advertising. If you opt out, you still see ads, but they are less tailored to you.

Consent in the EEA, the UK and Switzerland. If you visit from these countries, a consent message from Google asks whether ads and analytics may use cookies, and which partners may do so, before any are set. You can change your answer at any time with the “Privacy choices” link at the bottom of every page. If you decline, you may still see non-personalised ads, which use cookies only for purposes such as limiting how often an ad is shown and preventing fraud.

US state privacy laws. We do not sell personal information for money. Under some US state laws, letting advertising partners use cookies to personalise ads can count as “selling” or “sharing” personal information. You can opt out with the links above.

Managing cookies

You can block or delete cookies in your browser settings. If you do, the site still works, but some analytics will not be recorded. Our own preference settings (listed above) are stored in local storage, not cookies.

Other third parties

Apart from Google, fonts are downloaded at build time and served from our own domain, so loading them does not contact any other third party. Links to other sites, such as our data sources, are governed by those sites’ own policies, and we are not responsible for their content or practices.

Contacting us

If you email contact@periodixtable.com, we receive your email address and whatever you choose to include. We use it only to read and reply to your message, and we do not sell or share it. We keep correspondence only as long as needed to handle your request. Please do not send sensitive personal information.

Legal basis and international transfers

Where the GDPR or UK GDPR applies, we rely on your consent for analytics and advertising cookies, and on our legitimate interest in keeping the site secure and answering messages for server logs and email. Google may process data on servers outside your country, including in the United States, using safeguards such as the EU–US Data Privacy Framework and standard contractual clauses. How long Google keeps this data is set out in its own policies.

Your rights

Because we do not keep personal profiles, there is usually nothing to access or delete beyond any email you have sent us. Depending on where you live, you may have rights to access, correct or delete personal data we hold about you. To exercise them, contact us and we will respond within a reasonable time. You can also withdraw your consent at any time, and you have the right to complain to your local data protection authority.

Children

The site is intended for general educational use and does not knowingly collect personal information from anyone under 13. If you believe a child has provided personal information, contact us and we will help.

Changes to this policy

If we change this policy, we will update the date above. Questions? See the contact page.