Cookie Policy
Last reviewed on 2026-04-24.
This Cookie Policy explains how makepiechart.com and its third-party partners use cookies and similar technologies (including localStorage and pixel tags) when you visit the site. Read alongside our Privacy Policy, which describes the broader handling of your information.
1. What are cookies?
Cookies are small text files that a website saves on your device when you visit. They let a site remember information between page loads or sessions — for example, whether you are using dark mode, or which pages you've recently viewed. Similar technologies like localStorage and pixel tags serve comparable purposes.
2. Categories of cookies we use
2.1 Strictly necessary / preferences
These are set by the site itself and are needed for basic functionality. They are not used for advertising.
| Name | Type | Purpose | Lifetime |
|---|---|---|---|
theme | localStorage | Remembers your light / dark mode choice. | Until cleared |
| Chart draft keys | localStorage | Stores the chart you are currently building so a refresh doesn't lose it. | Until cleared |
2.2 Analytics
We use Google Analytics 4 to understand aggregate traffic. These cookies help us see which pages are popular, which are broken and how visitors move through the site. They do not identify you personally.
| Name | Provider | Purpose | Lifetime |
|---|---|---|---|
_ga | Google Analytics | Assigns an anonymous ID used to distinguish users. | ~2 years |
_ga_<container-id> | Google Analytics | Maintains session state. | ~2 years |
2.3 Advertising (Google AdSense and partners)
Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this site and/or other sites on the Internet. These cookies are used for frequency capping, measurement, fraud prevention, and — where permitted — ad personalisation.
| Name | Provider | Purpose | Lifetime |
|---|---|---|---|
__gads, __gpi | Ad delivery, frequency capping, measurement. | Up to 13 months | |
IDE, NID | Google (doubleclick.net / google.com) | Ad personalisation and measurement, when permitted. | Up to 24 months |
| Other partner cookies | Partners in the Google advertising ecosystem | Ad delivery and measurement. | Varies |
Exact cookie names and lifetimes may change as Google and its partners update their systems. The authoritative, up-to-date list is maintained by Google.
3. How to control cookies
3.1 In your browser
Every major browser lets you view, block and delete cookies in its privacy or site-settings panel. Blocking all cookies may break some functionality on this site, such as your dark-mode preference and the chart draft you are currently working on. You can clear localStorage for this site from the same panel.
3.2 Opt-out for advertising
You can adjust how Google personalises ads for you on Google properties and partner sites at Google Ad Settings. To opt out of personalised advertising from many other vendors at once, use:
- aboutads.info/choices (Digital Advertising Alliance, primarily US)
- youronlinechoices.com (European Interactive Digital Advertising Alliance, EU / UK)
- optout.networkadvertising.org (Network Advertising Initiative)
Opting out does not eliminate advertising — ads will still be shown, but they will be less tailored to your interests.
3.3 Consent (EEA / UK and similar regions)
If you visit the site from a region where consent is required for non-essential cookies, we will ask for your choice through a consent mechanism before advertising or analytics cookies are set. You can change your choice at any time by clearing your site data and re-loading the page, or via the controls described above.
4. Do Not Track
Some browsers send a "Do Not Track" signal. There is currently no industry-wide standard for how sites should respond. Our advertising and analytics partners handle this signal according to their own policies; see the opt-out links above for more direct control.
5. Changes to this policy
We may update this Cookie Policy to reflect changes in technology, regulation or the services we use. The "Last reviewed" date at the top of this page shows when the current version took effect.