About

checkbeforeyou.app is a small collection of free tools that each do one useful job before you post, buy or send something.

How the tools work

• They run in your browser. There is nothing to install and no account to create.
• Your data stays with you. Wherever possible, files and numbers are processed on your own device. If a tool needs to look something up online, such as a public DNS record, the tool page says so.
• They explain themselves. Each page covers what the tool checks, why it matters and how to do the same thing by hand.

Who runs this site

The site is built and run by Sound Partners in the United Kingdom. We plan to keep the tools free with a small amount of advertising, always kept clear of the tools themselves.

Suggest a tool

Is there a quick check you wish existed? We add new tools regularly. Tell us what you need.