Privacy and terms

Last updated: 3 November 2026

Privacy

mermaid2pptx converts diagrams inside your browser. The Mermaid source you paste, the rendered diagram and the generated .pptx file are processed locally and are never uploaded to our servers. There is no account system and no diagram history.

The page stores two preferences in your browser's local storage: the interface language and the colour theme. Both stay on your device and can be cleared at any time from your browser settings.

Like most free tools, this site is supported by advertising. Google AdSense and Baidu Analytics may set cookies or read device identifiers to measure traffic and to serve ads. You can limit this behaviour with your browser settings or an ad blocker; the converter itself keeps working.

When the browser language is not one of the supported interface languages, the page may ask a public IP geolocation service for the country code in order to pick a sensible default. Only the country is used, and the request is skipped when a language is already known.

Terms of use

The converter is provided free of charge, as is, without warranty of any kind. Generated presentations are yours to use; you are responsible for the content of the diagrams you convert and for any third-party rights attached to them.

Do not use the service to process material that is unlawful, or to attack, overload or reverse engineer the hosting infrastructure. Availability may change without notice.

Contact

Questions about this page? Write to hello@hui1111.cn.