Privacy policy

Last updated: 25 October 2026.

This policy covers the Plainwren tools website. It explains what happens to what you type and the files you open, what the hosting provider receives, how advertising and cookies work on the site, and the choices you have.

The tools run in your browser

The calculators, converters and file tools run in your browser using code that is downloaded with the page. The numbers, dates, text and files you enter or open are processed on your device. They are not uploaded to us, and we do not receive or store them.

• Some tools download extra files from this site when you use them, for example the OCR engine and language data on the image to text page or the PDF library on the PDF tools. These downloads carry no data about your files.
• Some tools can make a share link that puts your settings in the web address (for example the meeting planner, the rent split calculator and days until). Anyone you send the link to can see those settings, and like any web address it can appear in your browser history and in hosting logs.

Inputs saved on your device

A few tools remember what you typed so it is there next time on the same device: the wheel spinner (your list), the invoice generator (your details and line items), the grade calculator (your scores, weights and letter scale) the GPA calculator (your courses, grades and scale) and the typing speed test (your personal best score). They use your browser's local storage, which stays in your browser and is not sent to us.

To delete it, use the delete or clear button in that tool, or clear this site's data in your browser settings.

Hosting and server logs

The site is hosted on Cloudflare Pages. Like any web host, Cloudflare receives standard technical information when your browser requests a page, such as your IP address, browser type, the address of the page requested and the time. It is used to deliver the pages and to protect the site from abuse, and it may be kept in logs for a limited time. It does not include what you type into the tools or the files you open in them. See Cloudflare's privacy policy.

Advertising

To keep the tools free, this site may show ads from Google AdSense. When ads are shown:

• 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 visit to this site and/or other sites on the Internet.
• Google and its partners may also use similar technologies, such as device identifiers, and may receive information such as your IP address and the address of the page you are viewing.
• Learn more in How Google uses information from sites or apps that use its services.

Cookies and similar technologies

The tools themselves work without cookies. Cookies and similar technologies on this site come from advertising (above), from your consent choices being remembered (below), and from the hosting provider where needed for security. The local storage used by some tools is described under inputs saved on your device.

Your choices

• You can opt out of personalised advertising from Google by visiting Google's Ads Settings.
• You can opt out of some third-party vendors' use of cookies for personalised advertising by visiting www.aboutads.info.
• You can block or delete cookies and site data in your browser settings. The tools keep working; clearing site data also removes inputs saved by the tools.

Visitors in the EEA, the UK and Switzerland

If you visit from the European Economic Area, the United Kingdom or Switzerland, you will be asked for your consent before cookies or similar technologies are used for advertising purposes that need consent. This is done through a consent management platform certified by Google. You can say no, and you can change your choice at any time through the "Privacy and cookie settings" link at the bottom of every page once ads are live.

Visitors in US states with privacy laws

Depending on where you live, for example in California and several other US states, you may have the right to opt out of the sale or sharing of personal information for targeted advertising, and to ask what information is held about you. Where these laws apply, you will be offered the opt-out through the same privacy and cookie settings, and you can also use the choices listed above.

Children

This site is not directed at children under 13, and we do not knowingly collect personal information from children under 13.

Contact

For questions about this policy or your data, email [email protected].

Changes to this policy

If this policy changes, the new version will be posted on this page with a new "last updated" date.