Privacy Policy

Last updated: October 2026

File-Extension.info is a free reference site about file formats and extensions. We keep the site running with a small amount of data, and this page explains what that is and how it is used. We do not run user accounts, so we never ask for your name, email, or a password to browse or use the tools.

We do collect a limited amount of technical information automatically, and we work with a few third parties for analytics and advertising. The sections below break that down.

The file tools

Some of our tools, such as the file identifier and the Base64 encoder, run in your browser, so the file never leaves your device. Others process the file you send on our server to produce the result and then delete it afterwards. In neither case do we keep your files or use them for anything other than the task you asked for.

Information collected automatically

Like most websites, our servers record standard technical details when a page is requested. This can include your IP address, browser type and version, the page you visited, the referring page, and a timestamp. We use these logs to keep the site secure, diagnose problems, and understand broad traffic patterns. We do not use them to build a profile of you as an individual.

Analytics

We use analytics to see which pages get visited and how people find the site. This data is aggregated and anonymous. It tells us that a page was viewed or that most visitors use a certain browser, not who you are. We rely on it to decide which extensions and articles to update or expand.

Advertising and cookies

The site shows advertising to cover hosting and development costs. Our advertising partners may set cookies in your browser to measure ad performance and, in some cases, show ads relevant to your interests. These cookies are set by the third parties, not by us. You can control or block cookies through your browser settings, and most ad networks also offer their own opt-out pages. Blocking advertising cookies will not stop the reference content or the tools from working.

The contact form

If you write to us through the contact form, we receive the name, email address and message you provide. We use that only to read and reply to your message. We do not add it to a marketing list or share it for unrelated purposes.

Third parties

Beyond our analytics and advertising providers, we do not sell or rent any information about you. The third parties we use handle data under their own privacy policies, and we suggest reading those if you want the full detail of what each one does. We only share what is needed for them to provide their service.

Your choices and rights

Depending on where you live, you may have rights over the data connected to you, such as the right to access it, correct it, or ask for it to be deleted, along with the ability to object to certain processing. Because we do not run accounts, most of the data we hold is not tied to a named person. If you have a question about your data or want to make a request, write to us at [email protected].

Children

The site is a general reference resource and is not aimed at children. We do not knowingly collect information from children.

Changes to this policy

We update this policy when our practices or the tools change. The version on this page is always the current one, and significant changes will be reflected here. Questions about anything above can go to [email protected].